CN101783696A - Interference-free antenna module and WiFi network system using same - Google Patents

Abstract

The invention relates to an interference-free antenna module and a WiFi (Wireless Fidelity) network system. The interference-free antenna module comprises a WiFi wireless interference-free antenna module. The module comprises a plurality of high-frequency signal transceiving units which respectively face different directions; and an antenna control unit electrically coupled to the high-frequency signal transceiver unit. The antenna control unit selects one of the high-frequency signal transceiving units to transmit or receive a circularly polarized high-frequency signal according to a signal transceiving requirement from a signal processing unit. The interference-free antenna module of the present invention also includes a client device interference-free antenna module. The interference-free antenna module of the client device comprises a circular polarized antenna unit. The WiFi network system of the invention comprises a WiFi wireless base station and also comprises a client device.

Description

Interference-free antenna module and WiFi network system using it

technical field

The present invention relates to an interference-free antenna module and a WiFi network system, especially to a method that can improve the transmission efficiency of a high-frequency signal between a WiFi wireless base station and a client device and improve the transmission of high-frequency signals An interference-free antenna module with a high noise ratio, and a transmission efficiency that can improve a high-frequency signal between a WiFi wireless base station and a client device, and enable the system to effectively maintain a certain service level A WiFi network system that expands the coverage of WiFi wireless base stations.

Background technique

In recent years, WiFi (Wireless Fidelity) technology has been widely used in wireless network systems in cities, so that people can surf the Internet anywhere from notebook computers or personal digital assistants (PDAs) with wireless Internet access capabilities, achieving the so-called mobile Internet access. The goal. As shown in FIG. 1 , a known WiFi network system includes a WiFi wireless base station 11 and a client device 12 . Among them, the WiFi wireless base station 11 is electrically coupled with a remote server 14 (such as a digital switch) by a physical network line 13, and the client device 12 (such as a mobile phone, a notebook computer or a personal digital assistant, etc.) The signal is transmitted to the WiFi wireless base station 11 , and then the signal is transmitted to the remote server 14 through the aforementioned physical network line 13 . Similarly, the signals intended to be transmitted to the client device 12 within the coverage of the WiFi base station 11 will be transmitted to the WiFi base station 11 through the physical network line 13 first, and then transmitted to the client through the wireless network device12.

Therefore, in the known WiFi network system, the transmission efficiency of the wireless network for transmitting signals between a WiFi wireless base station and a client device is very important. Moreover, since the city is full of buildings, moving vehicles, and dirty air particles, etc., which will cause the aforementioned low transmission efficiency of the wireless network, the noise ratio of the known wireless network when transmitting signals is not the same. It cannot be effectively suppressed, and signal loss is prone to occur. In order to maintain a certain level of service, the known WiFi network system has to narrow the coverage of its WiFi base station. In this way, not only the overall construction cost of the known WiFi network system is greatly increased (because a large number of WiFi wireless base stations need to be installed), but also the health of people living around many WiFi wireless base stations is affected.

In order to overcome the aforementioned problems, some people in the industry have proposed a solution to use a smart antenna as the antenna of a WiFi wireless base station, because the smart antenna can only receive one signal from a specific direction in a certain time slot (time slot). A high-frequency signal with a specific frequency. In this way, other high-frequency signals from different directions or with different frequencies (such as those reflected by buildings or transmitted from other client electronic devices to WiFi wireless base stations) will not be received by the smart antenna , so that the transmission efficiency of the wireless network for transmitting signals between a WiFi base station and a client device can be improved. However, the smart antenna is very expensive, and its cost is even higher than the cost of the entire WiFi wireless base station, making it impossible for the industry to widely install a WiFi wireless base station with a smart antenna. That is to say, the aforementioned solutions using smart antennas can only partially solve the aforementioned problems.

Therefore, the industry needs an interference-free antenna module that can improve the transmission efficiency of a high-frequency signal between a WiFi wireless base station and a client device and improve the noise ratio when transmitting a high-frequency signal, and an anti-interference antenna module that can improve a high-frequency signal. The transmission efficiency of high-frequency signals between a WiFi wireless base station and a client device enables the system to effectively expand the coverage of the WiFi wireless base station under the premise of maintaining a certain service level.

Contents of the invention

The main purpose of the present invention is to provide an interference-free antenna module, so as to improve the transmission efficiency of a high-frequency signal between a WiFi wireless base station and a client device and improve the noise ratio when transmitting the high-frequency signal.

Another object of the present invention is to provide a WiFi network system, so as to improve the transmission efficiency of a high-frequency signal between a WiFi wireless base station and a client device, and enable the system to maintain a certain service level Next, effectively expand the coverage of WiFi wireless base stations.

In order to achieve the above object, the interference-free antenna module of the present invention is set on a WiFi wireless base station with a signal processing unit and applied to high-frequency signal transmission between the WiFi wireless base station and a client device, including : a plurality of high-frequency signal transceiving units, and the high-frequency signal transceiving units are respectively facing different directions; and an antenna control unit, which is electrically coupled with the high-frequency signal transceiving units respectively. Wherein, the antenna control unit is electrically coupled with the signal processing unit and selects one of the high-frequency signal transceiving units to transmit or receive a circularly polarized high-frequency signal according to a signal transceiving requirement from the signal processing unit. Signal. The interference-free antenna module of the present invention is also arranged on a client device, including a client device interference-free antenna module and a second signal processing unit. The client device interference-free antenna module includes a circularly polarized antenna unit, The circularly polarized antenna unit transmits or receives a circularly polarized second high frequency signal.

In order to achieve the above object, the WiFi network system of the present invention includes: a WiFi wireless base station, including an interference-free antenna module and a first signal processing unit, and the interference-free antenna module includes a plurality of first high-frequency signal transceiver units and a first antenna control unit electrically coupled with the first high-frequency signal transceiving unit, the first antenna control unit is electrically coupled with the first signal processing unit and based on a signal from the first signal processing unit According to the signal transceiving requirements, select one of the first high-frequency signal transceiving units to transmit or receive a circularly polarized first high-frequency signal; and a client device, including a client device interference-free antenna module and a The second signal processing unit, the interference-free antenna module of the client device, includes a circularly polarized antenna unit, and the circularly polarized antenna unit transmits or receives a circularly polarized second high-frequency signal. Wherein, the first high-frequency signal transceiving units are oriented in different directions, and one of the first high-frequency signal transceiving units is oriented towards the client device.

Therefore, because the high-frequency signals emitted by the multiple high-frequency signal transceiving units of the interference-free antenna module of the present invention have the characteristics of circular polarization (such as left-handed circular polarization), and when the circularly polarized high-frequency After the signal is reflected by an obstacle (such as a building or a vehicle), its circular polarization characteristics will be changed accordingly (such as from left-handed circular polarization to right-handed circular polarization). Therefore, only a high-frequency signal with a specific circular polarization (eg, left-handed circular polarization) can be delivered to the signal processing unit of the client device. In this way, even if the aforementioned circularly polarized high-frequency signals reflected by obstacles also enter the circularly polarized antenna unit of the client device, these reflected circularly polarized high-frequency signals have a right-handed circular Polarized nature, they do not enter the signal processing unit of the client device. That is to say, the noise generated by these reflected circularly polarized high-frequency signals can be effectively suppressed, so that the noise ratio when transmitting high-frequency signals can be improved, and this high-frequency signal is transmitted in a WiFi The transfer efficiency between the wireless base station and a UE can also be improved.

In the same way, since the high-frequency signal transceiver units of the WiFi wireless base station and the antenna module of the client device in the WiFi network system of the present invention can both transmit or receive a circularly polarized high-frequency signal, when When a WiFi wireless base station (or client device) transmits a circularly polarized high-frequency signal, the corresponding client device (or WiFi wireless base station) can easily receive the circularly polarized high-frequency signal, and Both the noise ratio and the transmission efficiency when transmitting high-frequency signals can be improved. In this way, the WiFi network system of the present invention can expand the coverage area of the WiFi wireless base station while still maintaining a certain service level.

Description of drawings

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic diagram of a known WiFi network system.

FIG. 2 is a schematic diagram of an interference-free antenna module according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of a WiFi network system according to another embodiment of the present invention.

FIG. 4 is a schematic diagram of a WiFi base station of a WiFi network system according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of a WiFi wireless base station installed on a roof of a room in a WiFi network system according to another embodiment of the present invention.

FIG. 6 is a schematic diagram of an interference-free antenna module of a client device in a WiFi network system according to another embodiment of the present invention.

Detailed ways

As shown in FIG. 2 , an interference-free antenna module according to an embodiment of the present invention includes a plurality of high-frequency signal transceiving units 21 , 22 , 23 , 24 , 25 , 26 and an antenna control unit 27 . Wherein, the aforesaid multiple high-frequency signal transceiving units 21, 22, 23, 24, 25, 26 face different directions respectively, and the antenna control unit 27 is respectively connected with the aforementioned multiple high-frequency signal transceiving units 21, 22, 23, 24, 25, 26 are electrically coupled.

On the other hand, the WiFi wireless base station (not shown in the figure) where the interference-free antenna module is located in an embodiment of the present invention has a signal processing unit (not shown in the figure), and the aforementioned antenna control unit 27 is connected with this signal The processing unit (not shown in the figure) is electrically coupled. In addition, the antenna control unit 27 selects one of the aforesaid multiple high-frequency signal transceiving units 21, 22, 23, 24, 25, 26 to transmit or Receives a circularly polarized high frequency signal.

As shown in FIG. 6, the client device according to an embodiment of the present invention includes a client device interference-free antenna module 41 and a second signal processing unit 42, and the client device interference-free antenna module 41 also includes a circularly polarized antenna Unit 411. In this embodiment, the circularly polarized antenna unit 411 includes a horizontal antenna unit 4111, a vertical antenna unit 4112, and a signal mixing unit 4113, and the signal mixing unit 4113 is electrically connected to the horizontal antenna unit 4111 and the vertical antenna unit 4112 respectively. sexual coupling. In addition, there is a phase difference of 90 degrees between the horizontal high-frequency signal transmitted or received by the horizontal antenna unit 4111 and the vertical high-frequency signal transmitted or received by the vertical antenna unit 4112 .

In addition, the antenna module in an embodiment of the present invention is set on a WiFi wireless base station (not shown in the figure) and applied to the WiFi wireless base station (not shown in the figure) and a client device (not shown in the figure) Not shown) high-frequency signal transmission between interference-free antenna modules of the client equipment.

As shown in Figure 2, the interference-free antenna module of this embodiment has 6 high-frequency signal transceiver units, and these 6 high-frequency signal transceiver units 21, 22, 23, 24, 25, and 26 are respectively a patch The patch array antenna has a rectangular substrate 211, 221, 231, 241, 251, 261 respectively. In this embodiment, the dimensions of the six rectangular substrates 211 , 221 , 231 , 241 , 251 , and 261 are all 5 cm×5 cm. In addition, the antenna control unit 27 includes a circular polarization filter unit 271 to filter the high-frequency signals received by the aforementioned multiple high-frequency signal transceiver units 21, 22, 23, 24, 25, and 26, so that Only a high-frequency signal with a specific circular polarization (eg, left-handed circular polarization) can be transmitted to the signal processing unit (not shown in the figure) of the aforementioned WiFi wireless base station (not shown in the figure).

In addition, in this embodiment, the antenna control unit 27 includes an electronic scan switch circuit board 272 (electronic scan switch board), so as to electronically scan according to a signal transceiving requirement from the aforementioned signal processing unit (not shown in the figure). Quickly switch and select one of the aforementioned multiple high-frequency signal transceiver units 21, 22, 23, 24, 25, 26 to transmit or receive a circularly polarized high-frequency signal. Finally, in this embodiment, the frequencies of the circularly polarized high-frequency signals transmitted or received by the aforesaid multiple high-frequency signal transceiving units 21, 22, 23, 24, 25, and 26 are about 2.4 GHz (actually The frequency will vary slightly according to actual needs).

It should be noted that although the interference-free antenna module in one embodiment of the present invention has 6 high-frequency signal transceiver units, the interference-free antenna module of the present invention can still have 1 to 6 high-frequency signal transceiver units according to actual needs. On the other hand, although the plurality of high-frequency signal transceiving units of the interference-free antenna module according to an embodiment of the present invention are respectively a patch array antenna (patch array antenna), these high-frequency signal transceiving units can still be based on actual needs. Other types of antennas, such as waveguide slot array antennas or sector horn antennas, can transmit or receive a circularly polarized high-frequency signal, and all high-frequency signal transceiver units The antennas do not necessarily need to be of the same type. Finally, although in this embodiment, the frequency of the aforementioned high-frequency signal is about 2.4 GHz, in practical applications, the frequency range of the aforementioned high-frequency signal can still vary according to actual needs (such as different types of environments). Between 2.3GHz and 2.5GHz.

As mentioned above, since the high-frequency signals emitted by the multiple high-frequency signal transceiver units of the interference-free antenna module according to an embodiment of the present invention have the characteristics of circular polarization (such as left-handed circular polarization), when the high After the frequency signal is reflected by an obstacle (such as a building or a vehicle), its circular polarization characteristics will be changed accordingly (such as changing from left-handed circular polarization to right-handed circular polarization). At this time, if the client device has a circular polarization filter part, only a high-frequency signal with a specific circular polarization (such as left-handed circular polarization) can pass through and be transmitted to its signal processing unit, even if the aforementioned high-frequency signals reflected by obstacles also enter the circularly polarized antenna unit of the client device, these reflected high-frequency signals still cannot reach the signal processing unit of the client device. That is to say, the noise generated by these reflected high-frequency signals can be effectively suppressed, so that the noise ratio of the interference-free antenna module according to an embodiment of the present invention can be improved when transmitting high-frequency signals.

Similarly, since the high-frequency signal emitted by the circularly polarized antenna unit of the client device has circular polarization characteristics (such as left-handed circular polarization), when the high-frequency signal is blocked by an obstacle (such as a building) Or vehicle) reflection, its circular polarization characteristics will be changed accordingly (for example, from left-handed circular polarization to right-handed circular polarization). At this time, if the interference-free antenna module according to an embodiment of the present invention has a circular polarization filter part of its antenna control unit, only one high-frequency signal with a specific circular polarization (such as a left-handed circular polarization ) can pass through and be transmitted to the signal processing unit of the WiFi wireless base station where it is located, then even the aforementioned high-frequency signals reflected by obstacles also enter the multiple high-frequency signals of the interference-free antenna module according to an embodiment of the present invention. The high-frequency signal transceiver unit, these reflected high-frequency signals still cannot reach the signal processing unit of the aforementioned WiFi wireless base station. That is to say, the noise generated by these reflected high-frequency signals can be effectively suppressed, so that the noise ratio of the interference-free antenna module according to an embodiment of the present invention can be improved when transmitting high-frequency signals.

As mentioned above, once the circularly polarized high-frequency signal is reflected by an obstacle, its circularly polarized characteristics will change accordingly, so when the circularly polarized high-frequency signal passes through the second After reflection, its circular polarization characteristics will change back to the same circular polarization characteristics as when it was emitted (eg left-handed circular polarization). At this time, although the twice-reflected circularly polarized high-frequency signal (emitted from the circularly polarized antenna unit of the client device) can be detected by the antenna control unit of the interference-free antenna module according to an embodiment of the present invention It has a circular polarization filter part and reaches the signal processing unit of the WiFi wireless base station where it is located. However, due to the secondary reflection, the intensity of the secondary reflected high-frequency signal has been attenuated to an extremely low level, so that the noise caused by the secondary reflected high-frequency signal has a large impact on the high-frequency signal in a WiFi Communications between the wireless base station and a client device are not affected.

In the same way, although the circularly polarized high-frequency signals (emitted from a plurality of high-frequency signal transceiver units of the interference-free antenna module according to an embodiment of the present invention) through secondary reflection can pass through the circular polarized signal of the client device, However, the intensity of the high-frequency signal that has been reflected twice has been attenuated to an extremely low level, so that the noise caused by the high-frequency signal that has been reflected twice has a large impact on the high-frequency signal. The transmission of signals between a WiFi base station and a client device will not be affected.

Therefore, by using the interference-free antenna module of an embodiment of the present invention, the transmission efficiency of a high-frequency signal between a WiFi wireless base station and a client device can be improved, and the noise ratio when transmitting the high-frequency signal is the same. It will not be pulled down by the aforementioned high-frequency signal reflected twice.

As shown in FIG. 3 , the WiFi network system according to another embodiment of the present invention includes a WiFi wireless base station 3 and a client device 4 , and the distance between them can reach more than 250 meters. In this way, the coverage area of the WiFi wireless base station 3 is much larger than that of known WiFi wireless base stations (the radius is about 75 meters to 150 meters).

And as shown in Figure 4, WiFi wireless base station 3 comprises an interference-free antenna module 31 and a first signal processing unit 32, and interference-free antenna module 31 also comprises a plurality of first high-frequency signal transceiving units 311, 312, 313, 314 , 315 , 316 and a first antenna control unit 317 . In addition, the aforesaid multiple first high-frequency signal transceiving units 311, 312, 313, 314, 315, 316 are facing in different directions respectively, and the first antenna control unit 317 is respectively connected with the aforesaid multiple first high-frequency signal The transceiver units 311 , 312 , 313 , 314 , 315 , 316 are electrically coupled. In addition, the first antenna control unit 317 is electrically coupled with the first signal processing unit 32 and selects one of the aforementioned multiple first high-frequency signals according to a signal transceiving requirement from the first signal processing unit 32 The transceiver units 311 , 312 , 313 , 314 , 315 , 316 transmit or receive a circularly polarized first high-frequency signal. On the other hand, as shown in FIG. 3 , the WiFi wireless base station 3 is further electrically coupled with a remote server 34 via a physical network line 33 . In this embodiment, the physical network line 33 is a network line of a backbone network, and the remote server is a server located in an exchange room.

As shown in Figure 5, the WiFi wireless base station 3 of this embodiment can be installed on the roof of a room, and it has a metal shell 35, and the aforementioned plurality of first high-frequency signal transceiver units 311, 312, 313 , 314 , 315 , 316 are respectively arranged on the metal casing and face in different directions, so as to transmit or receive a circularly polarized first high-frequency signal in different directions.

As shown in Figure 6, the client device 4 includes a client device interference-free antenna module 41 and a second signal processing unit 42, and the client device interference-free antenna module 41 also includes a circularly polarized antenna unit 411 to transmit Or receive a circularly polarized second high frequency signal. In this embodiment, the circularly polarized antenna unit 411 includes a horizontal antenna unit 4111, a vertical antenna unit 4112, and a signal mixing unit 4113, and the signal mixing unit 4113 is electrically connected to the horizontal antenna unit 4111 and the vertical antenna unit 4112 respectively. sexual coupling. In addition, there is a phase difference of 90 degrees between the horizontal high-frequency signal transmitted or received by the horizontal antenna unit 4111 and the vertical high-frequency signal transmitted or received by the vertical antenna unit 4112 .

In addition, since the aforementioned circularly polarized antenna unit 411 itself has the function of circularly polarized filtering, only the specific circularly polarized second high-frequency signal (such as left-handed circularly polarized) can be transmitted to In the second signal processing unit 42 . Moreover, as shown in FIG. 3 , one or more of the first high-frequency signal transceiving units 311, 312, 313, 314, 315, 316 (that is, the first high-frequency signal transceiving unit 311) are towards the client device 4, and The client device 4 is a WiFi mobile phone.

As shown in Figure 4 again, in this embodiment, the interference-free antenna module 31 has six first high-frequency signal transceiving units 311, 312, 313, 314, 315, 316, and these first high-frequency signal transceiving units 311 . The dimensions of 3131, 3141, 3151, and 3161 are all 5cm×5cm. In addition, the first antenna control unit 317 includes a circular polarization filter unit 3171 to filter the first high-frequency signals respectively received by the aforementioned six first high-frequency signal transceiving units 311, 312, 313, 314, 315, and 316. signal, so that only a first high-frequency signal with a specific circular polarization (such as a left-handed circular polarization) can be transmitted to the first signal processing unit 32 of the WiFi wireless base station 3 .

In addition, in this embodiment, the first antenna control unit 317 also includes an electronic scan switch circuit board 3172, so as to electronically quickly switch and select One of the aforementioned six first high-frequency signal transceiving units 311 , 312 , 313 , 314 , 315 , and 316 transmits or receives a circularly polarized first high-frequency signal. Finally, in this embodiment, the frequencies of the circularly polarized first high-frequency signals transmitted or received by the aforementioned six first high-frequency signal transceiving units 311, 312, 313, 314, 315, and 316 are about 2.4GHz (the actual frequency will vary slightly according to actual needs).

As shown in Figure 3, when the WiFi wireless base station 3 receives a circuit signal to be forwarded to the client device 4 from the physical network line 33, the WiFi wireless base station 3 first converts the circuit signal into a corresponding circle shape-polarized first high-frequency signal. Then, the first antenna control unit 317 of the WiFi wireless base station 3 selects to transmit the first high-frequency signal towards the first high-frequency signal transceiver unit 311 of the client device 4, and the circularly polarized antenna unit 411 of the client device 4 Then the aforementioned first high-frequency signal is received.

On the other hand, when the client device 4 intends to transmit a signal to the remote server 34, the circularly polarized antenna unit 411 of the client device 4 emits a circularly polarized second high frequency corresponding to the signal. The first antenna control unit 317 of the WiFi base station 3 selects the first high-frequency signal transceiving unit 311 of the client device 4 to receive the aforementioned second high-frequency signal. Next, the WiFi wireless base station 3 converts the received second high-frequency signal correspondingly to obtain a circuit signal, and then transmits the circuit signal to the remote server 34 through the physical network line 33 .

It should be noted that although in this embodiment, the interference-free antenna module has 6 first high-frequency signal transceiver units, the interference-free antenna module can still have 1 to 6 first high-frequency signal transceiver units according to actual needs . On the other hand, although the plurality of first high-frequency signal transceiving units are respectively a patch array antenna, these first high-frequency signal transceiving units can still be other types of antennas according to actual needs, such as waveguide slot array antennas Or sector horn antennas and other antennas that can transmit or receive a circularly polarized high-frequency signal, and all the first high-frequency signal transceiving units do not necessarily need to be the same type of antenna. Finally, although in this embodiment, the frequencies of the aforementioned first high-frequency signal and the second high-frequency signal are both about 2.4 GHz, in practical applications, the frequency of the aforementioned first high-frequency signal and the second high-frequency signal The frequency range can still be between 2.3GHz and 2.5GHz according to actual needs (such as different types of environments).

As previously mentioned, the first high-frequency signal transmitted by the first high-frequency signal transceiver unit 311 of the WiFi network system 3 of the WiFi network system in another embodiment of the present invention has a circular pole The characteristics of the polarization (such as left-handed circular polarization), so when the first high-frequency signal is reflected by an obstacle (such as a building or a vehicle), the characteristics of its circular polarization will change (such as from a left-handed circular polarization changes to right-handed circular polarization). At this time, if the circularly polarized antenna unit 411 of the client device interference-free antenna module 41 of the client device 4 restricts only a first high-frequency signal with a specific circular polarization (such as a left-handed circular polarization) to Can pass through and be delivered to its second signal processing unit 42, then even the aforementioned first high-frequency signal reflected by obstacles also enters the circularly polarized antenna of the client device interference-free antenna module 41 of the client device 4 unit 411 , these reflected first high-frequency signals still cannot reach the second signal processing unit 42 of the client device 4 .

Similarly, since the high-frequency signal emitted by the circularly polarized antenna unit 411 of the client device 4 has circular polarization characteristics (such as left-handed circular polarization), when the high-frequency signal is blocked by an obstacle (such as Buildings or vehicles), the characteristics of its circular polarization will be changed accordingly (for example, from left-handed circular polarization to right-handed circular polarization). At this time, if the WiFi wireless base station 3 of the WiFi network system according to another embodiment of the present invention restricts only one high-frequency signal with a specific circular polarization (such as left-handed circular polarization) by the circular polarization filtering part 3171 can pass through and be delivered to its first signal processing unit 32, then even the aforesaid high-frequency signals reflected by obstacles also enter the interference-free antenna of the WiFi wireless base station 3 of the WiFi network system of another embodiment of the present invention together The module has a plurality of high-frequency signal transceiving units 311 , 312 , 313 , 314 , 315 , and 316 . These reflected high-frequency signals still cannot reach the signal processing unit 32 of the WiFi wireless base station 3 . That is to say, the noise generated by these reflected high-frequency signals can be effectively suppressed, so that the WiFi network system in another embodiment of the present invention can enhance a high-frequency signal between a WiFi wireless base station and a client. transfer efficiency between end devices.

As mentioned above, once the circularly polarized high-frequency signal is reflected by an obstacle, its circularly polarized characteristics will change accordingly, so when the circularly polarized high-frequency signal passes through the second After reflection, its circular polarization characteristics will change back to the same circular polarization characteristics as when it was emitted (eg left-handed circular polarization). At this time, although this circularly polarized high-frequency signal (emitted from the circularly polarized antenna unit of the client device) through secondary reflection can pass through the WiFi wireless base station of the WiFi network system according to another embodiment of the present invention The circular polarization filter unit 3171 of the first antenna control unit 317 of 3 reaches the signal processing unit 32. However, due to the secondary reflection, the intensity of the secondary reflected high-frequency signal has been attenuated to an extremely low level, so that the noise caused by the secondary reflected high-frequency signal has a large impact on the high-frequency signal in a WiFi Communications between the wireless base station and a client device are not affected.

In the same way, although the circularly polarized high-frequency signal through secondary reflection (from the multiple first high-frequency signals that the interference-free antenna module 312 of the WiFi wireless base station 3 of the WiFi network system of another embodiment of the present invention has Signal transceiving units 311, 312, 313, 314, 315, 316) can reach the signal processing unit through the circular polarization filter part of the client device, but the strength of the high-frequency signal reflected twice It has been attenuated to an extremely low level, so that the noise caused by the secondary reflected high-frequency signal will not affect the transmission of the high-frequency signal between a WiFi wireless base station and a client device. Therefore, by using the WiFi network system of another embodiment of the present invention, the transmission efficiency of a high-frequency signal between a WiFi wireless base station and a client device can be improved, and the noise ratio when transmitting the high-frequency signal is the same. It will not be pulled down by the above-mentioned high-frequency signal reflected twice, and the system can effectively expand the coverage area of the WiFi wireless base station under the premise of maintaining a certain service level.

In summary, since the high-frequency signals emitted by the multiple high-frequency signal transceiver units of the interference-free antenna module of the present invention have the characteristics of circular polarization (such as left-handed circular polarization), and when the circular polarization After the high-frequency signal is reflected by an obstacle (such as a building or a vehicle), its circular polarization characteristics will change accordingly (such as changing from left-handed circular polarization to right-handed circular polarization). Therefore, only a high-frequency signal with a specific circular polarization (eg, left-handed circular polarization) can be delivered to the signal processing unit of the client device. In this way, even if the aforementioned circularly polarized high-frequency signals reflected by obstacles also enter the circularly polarized antenna unit of the client device, these reflected circularly polarized high-frequency signals have a right-handed circular Polarized nature, they do not enter the signal processing unit of the client device. That is to say, the noise generated by these reflected circularly polarized high-frequency signals can be effectively suppressed, so that the noise ratio when transmitting high-frequency signals can be improved, and this high-frequency signal is transmitted in a WiFi The transfer efficiency between the wireless base station and a UE can also be improved.

In the same way, since the high-frequency signal transceiver units of the WiFi wireless base station and the antenna module of the client device in the WiFi network system of the present invention can both transmit or receive a circularly polarized high-frequency signal, when When a WiFi wireless base station (or client device) transmits a circularly polarized high-frequency signal, the corresponding client device (or WiFi wireless base station) can easily receive the circularly polarized high-frequency signal, and Both the noise ratio and the transmission efficiency when transmitting high-frequency signals can be improved. In this way, the WiFi network system of the present invention can expand the coverage area of the WiFi wireless base station while still maintaining a certain service level.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of the patent application, rather than limited to the above-mentioned embodiments.

Claims (21)

1. exempt from the potato masher antenna module for one kind, be arranged on the WiFi radio base station of a signal processing unit and be applied to high-frequency signal transmission between this a WiFi radio base station and the client device, comprising:

A plurality of high-frequency signal Transmit-Receive Units, and described high-frequency signal Transmit-Receive Unit is respectively towards different directions; And

One antenna control unit is respectively with described high-frequency signal Transmit-Receive Unit electrical couplings;

Wherein, this antenna control unit and this signal processing unit electrical couplings and the foundation one signal transmitting and receiving demand from this signal processing unit are selected a described high-frequency signal Transmit-Receive Unit emission wherein or are received a circularly polarized high-frequency signal.

2. the potato masher antenna module of exempting from as claimed in claim 1, the number of wherein said high-frequency signal Transmit-Receive Unit is 1 to 6.

3. the potato masher antenna module of exempting from as claimed in claim 1, wherein said high-frequency signal Transmit-Receive Unit is respectively a patch array antenna.

4. the potato masher antenna module of exempting from as claimed in claim 1, wherein this antenna control unit comprises a Circular Polarisation filtering portion, with filter described high-frequency signal Transmit-Receive Unit the high-frequency signal that receives respectively.

5. the potato masher antenna module of exempting from as claimed in claim 1, wherein said high-frequency signal Transmit-Receive Unit has a rectangular substrate respectively.

6. the potato masher antenna module of exempting from as claimed in claim 1, wherein this antenna control unit comprises an electronic type and scans switching circuit board.

7. the potato masher antenna module of exempting from as claimed in claim 1, wherein the frequency range of this high-frequency signal is between between the 2.3GHz to 2.5GHz.

8. exempt from the potato masher antenna module for one kind, be arranged on the client device of a signal processing unit and be applied to high-frequency signal transmission between this client device and the WiFi radio base station, comprising:

One client device is exempted from a potato masher antenna module and a secondary signal processing unit, and this client device is exempted from the potato masher antenna module and comprised a circular polarization aerial unit, and this circular polarization aerial unit is also launched or received a circularly polarized second high-frequency signal.

9. client device as claimed in claim 8 is exempted from the potato masher antenna module, wherein this circular polarization aerial unit comprises a horizontal antenna portion, a vertical antenna portion and a signal mixing portion, and this signal mixing portion is other and this horizontal antenna portion and this vertical antenna portion electrical couplings.

10. WiFi network system comprises:

-WiFi radio base station, comprise and exempt from potato masher antenna module and one first signal processing unit, this exempt from the potato masher antenna module comprise a plurality of first high-frequency signal Transmit-Receive Units and respectively with first antenna control unit of the described first high-frequency signal Transmit-Receive Unit electrical couplings, this first antenna control unit and this first signal processing unit electrical couplings and the foundation one signal transmitting and receiving demand from this first signal processing unit are selected described first a high-frequency signal Transmit-Receive Unit emission wherein or are received a circularly polarized first high-frequency signal; And

One client device, comprise a client device and exempt from a potato masher antenna module and a secondary signal processing unit, this client device is exempted from the potato masher antenna module and is comprised a circular polarization aerial unit, and this circular polarization aerial unit is also launched or received a circularly polarized second high-frequency signal;

Wherein, the described first high-frequency signal Transmit-Receive Unit is respectively towards different directions, and described first a high-frequency signal Transmit-Receive Unit wherein is towards this client device.

11. WiFi network system as claimed in claim 10, wherein this WiFi radio base station by a physical network line with a remote server electrical couplings.

12. WiFi network system as claimed in claim 10, wherein when this first antenna control unit selected this first high-frequency signal Transmit-Receive Unit towards this client device to launch this first high-frequency signal, this circular polarization aerial unit received this first high-frequency signal.

13. WiFi network system as claimed in claim 12, wherein when this second high-frequency signal was launched in this circular polarization aerial unit, this first antenna control unit then selected this first high-frequency signal Transmit-Receive Unit towards this client device to receive this second high-frequency signal.

14. WiFi network system as claimed in claim 10, the number of the wherein said first high-frequency signal Transmit-Receive Unit are 1 to 6.

15. WiFi network system as claimed in claim 10, the wherein said first high-frequency signal Transmit-Receive Unit is respectively a patch array antenna.

16. WiFi network system as claimed in claim 10, wherein this first antenna control unit comprises one first Circular Polarisation filtering portion, with filter the described first high-frequency signal Transmit-Receive Unit first high-frequency signal that receives respectively.

17. WiFi network system as claimed in claim 10, the wherein said first high-frequency signal Transmit-Receive Unit has one first rectangular substrate respectively.

18. WiFi network system as claimed in claim 10, wherein this first antenna control unit comprises an electronic type and scans switching circuit board.

19. WiFi network system as claimed in claim 10, wherein the frequency range of this first high-frequency signal and this second high-frequency signal is respectively between between the 2.3GHz to 2.5GHz.

20. WiFi network system as claimed in claim 10, wherein this circular polarization aerial unit comprises a horizontal antenna portion, a vertical antenna portion and a signal mixing portion, and this signal mixing portion is other and this horizontal antenna portion and this vertical antenna portion electrical couplings.

21. WiFi network system as claimed in claim 10, wherein this client device is a WiFi mobile phone.

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