CN109149138B - Dielectric antenna, dielectric antenna device and communication device - Google Patents
Dielectric antenna, dielectric antenna device and communication device Download PDFInfo
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- CN109149138B CN109149138B CN201811059986.4A CN201811059986A CN109149138B CN 109149138 B CN109149138 B CN 109149138B CN 201811059986 A CN201811059986 A CN 201811059986A CN 109149138 B CN109149138 B CN 109149138B
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- electrode plate
- antenna
- dielectric antenna
- dielectric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention relates to a dielectric antenna, which comprises an antenna body, wherein the antenna body comprises a dielectric body, a feed-in end and a grounding end which are arranged on the surface of the dielectric body, and the antenna body also comprises a first electrode plate, a second electrode plate, a common electrode plate and an inductance column which are arranged in the dielectric body, wherein: the first electrode plate is connected with the feed-in end, the first electrode plate and the common electrode plate are oppositely arranged, and a first capacitor is formed between the first electrode plate and the common electrode plate; the second electrode plate is connected with a grounding end, the second electrode plate and the common electrode plate are oppositely arranged to form a second capacitor between the second electrode plate and the common electrode plate, two ends of the inductance column are respectively connected with the common electrode plate and the grounding end to be connected with the second capacitor in parallel to form a parallel resonance circuit, and the dielectric antenna can be placed at any position of the circuit board; a dielectric antenna device, its dielectric antenna can be put in any position of the circuit board; a communication apparatus in which a mounting position of a dielectric antenna on a circuit board is not limited.
Description
Technical Field
The present invention relates to the field of antenna technology, and in particular, to a dielectric antenna, a dielectric antenna device, and a communication device.
Background
The miniaturized dielectric antenna device is widely applied to mobile terminal equipment such as Bluetooth and WiFi, has the characteristics of small size, low price, wide application and the like, a dielectric antenna in the dielectric antenna device is usually realized by forming a specific metal pattern on the surface of a medium with a certain dielectric constant or in the medium, and the miniaturized dielectric antenna device mainly comprises two types at present: the first similar monopole antenna device is open-circuited to the ground at the end of the antenna body, theoretically, the size of the monopole antenna is a quarter wavelength, and the dielectric antenna device can reduce the size of the dielectric antenna through dielectric loading, and an equivalent circuit diagram of the monopole antenna device is shown in fig. 1; the second type is similar to a loop antenna device, in which the end of the antenna body is short-circuited to ground, and the equivalent circuit diagram of the loop dielectric antenna device is shown in fig. 2. In the practical application detection process, analysis shows that the first type of monopole dielectric antenna device can only be applied to the corners of the circuit board under normal conditions, and when the monopole dielectric antenna device is far away from the corner positions of the circuit board, the antenna characteristics are deteriorated; the second type of dielectric circular antenna device is generally used at a position far from a corner, and the characteristics are deteriorated when used at the corner, so that both of the dielectric circular antenna devices have a certain position limitation when used.
Disclosure of Invention
In order to solve the above problems, the present invention provides a dielectric antenna, which adds a parallel resonant circuit on the basis of a loop antenna, so that the dielectric antenna can be placed at any position of a circuit board.
The invention also provides a dielectric antenna device, and the dielectric antenna can be placed at any position of the circuit board.
The invention also provides a communication device, and the mounting position of the dielectric antenna on the circuit board is not limited.
In order to solve the above-mentioned purpose, the following technical scheme is adopted in the invention.
The utility model provides a dielectric antenna, includes the antenna body, the antenna body includes the dielectric body and locates feed-in end and the earthing terminal on dielectric body surface, the antenna body still including locating first electrode slice, second electrode slice, common electrode slice and the inductance post in the dielectric body, wherein: the first electrode plate is connected with the feed-in end, the first electrode plate and the common electrode plate are oppositely arranged, and a first capacitor is formed between the first electrode plate and the common electrode plate; the second electrode plate is connected with a grounding end, the second electrode plate and the common electrode plate are oppositely arranged to form a second capacitor between the second electrode plate and the common electrode plate, and two ends of the inductance column are respectively connected with the common electrode plate and the grounding end to be connected with the second capacitor in parallel to form a parallel resonance circuit.
Preferably, the first electrode pad of the dielectric antenna is connected to the feed terminal through the conductive post, and the second electrode pad is connected to the ground terminal through the conductive post.
Preferably, the feed end and the ground end of the dielectric antenna are both provided with a pad structure.
Preferably, the first electrode plate and the common electrode plate of the dielectric antenna are arranged in parallel and oppositely, and the second electrode plate and the common electrode plate are arranged in parallel and oppositely.
A dielectric antenna device comprises an antenna matching circuit, a circuit board connected with the dielectric antenna and the dielectric antenna with the structure, wherein the circuit board is connected with a feed-in end of the dielectric antenna through the antenna matching circuit, and a grounding end of the dielectric antenna is connected with the circuit board and grounded.
Preferably, the dielectric antenna device further includes a metal wiring body, the antenna matching circuit is connected to the feed-in terminal of the dielectric antenna through the metal wiring body, and the ground terminal of the dielectric antenna is connected to the circuit board through the metal wiring body.
A communication device comprises the dielectric antenna with the structure.
The invention has the following beneficial effects:
the dielectric antenna of the invention forms a parallel resonance circuit in the antenna body by coupling the common electrode plate, the second electrode plate and the inductance column, namely, the parallel resonance circuit is added on the basis of the loop antenna, so that the dielectric antenna has the advantages of a monopole antenna and a loop antenna at the same time, and can be arranged at any position on a circuit board without influencing the main performance index of the dielectric antenna; the dielectric antenna device comprises a circuit board, an antenna matching circuit and the dielectric antenna with the structure, the main performance index of the antenna can not be limited by the installation position of the dielectric antenna on the circuit board, and the installation is flexible; the communication device comprises the dielectric antenna with the structure, and the installation position of the dielectric antenna on the circuit board is not limited.
Drawings
Fig. 1 is an equivalent circuit diagram of a monopole-like dielectric antenna in the prior art;
FIG. 2 is an equivalent circuit diagram of a similar annular dielectric antenna in the prior art;
FIG. 3 is a schematic structural diagram of a dielectric antenna according to the present invention;
FIG. 4 is an equivalent circuit diagram of the dielectric antenna of the present invention;
FIG. 5 is a schematic structural diagram of a first usage state of the dielectric antenna according to the present invention;
fig. 6 is a radiation efficiency graph and a voltage standing wave ratio graph of the dielectric antenna of the present invention in a use state.
FIG. 7 is a schematic structural diagram of a second state of use of the dielectric antenna according to the present invention;
fig. 8 is a radiation efficiency diagram and a voltage standing wave ratio diagram of the dielectric antenna of the present invention in the second usage state.
Description of reference numerals: 100. the antenna comprises an antenna body, 101, a dielectric body, 102, a feed-in terminal, 103, a first electrode plate, 104, a common electrode plate, 105, a second electrode plate, 106, an inductance column, 107, a grounding terminal, 108, a conductive column, 110, 120, an antenna matching circuit and 130, a metal wiring body.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 3, the dielectric antenna of the present embodiment includes an antenna body 100, where the antenna body 100 includes a dielectric body 101, a feeding terminal 102 and a ground terminal 107 disposed on a surface of the dielectric body 101, and the antenna body 100 further includes a first electrode tab 103, a second electrode tab 105, a common electrode tab 104 and an inductance post 106 disposed in the dielectric body 101, where: the first electrode sheet 103 is connected with the feed end 102, the first electrode sheet 103 is arranged opposite to the common electrode sheet 104, and a first capacitor C1 is formed between the first electrode sheet 103 and the common electrode sheet 104; the second electrode plate 105 is connected to the ground 107, the second electrode plate 105 is disposed opposite to the common electrode plate 104 to form a second capacitor C2 between the second electrode plate 105 and the common electrode plate 104, two ends of the inductance post 106 are respectively connected to the common electrode plate 104 and the ground 107 to form a parallel resonant circuit in parallel with the second capacitor C2, in this embodiment, the first electrode plate 103 is connected to the feed-in terminal 102 through the conductive post 108, the second electrode plate 105 is connected to the ground 107 through the conductive post 108, the feed-in terminal 102 and the ground 107 of the antenna body 100 are both configured as a pad structure, the first electrode plate 103 and the common electrode plate 104 are disposed in parallel and opposite, the second electrode plate 105 and the common electrode plate 104 are disposed in parallel and opposite, in practical use, a path of a high-frequency signal propagating in the antenna body 100 is: the dielectric antenna of the present embodiment forms a parallel resonant circuit in the antenna body 100 by coupling the common electrode sheet 104, the second electrode sheet 105 and the inductance column 106, and the parallel resonant circuit is added on the basis of the loop antenna, so that the dielectric antenna has the advantages of both a monopole antenna and a loop antenna, and can be disposed at any position of the circuit board 110 without affecting the main performance index of the dielectric antenna.
Referring to fig. 5, the dielectric antenna is disposed at a corner of the circuit board 110, and fig. 6 shows a radiation efficiency graph and a voltage standing wave ratio graph obtained by monitoring when the dielectric antenna is disposed at the corner of the circuit board 110, the antenna characteristics are good, and the radiation efficiency can reach 85% -95%. Referring to fig. 7, the dielectric antenna is disposed at the middle position of the circuit board 110, and fig. 8 shows a radiation efficiency graph and a voltage standing wave ratio graph obtained by monitoring when the dielectric antenna is disposed at the middle position of the circuit board 110, the antenna characteristics are good, and the radiation efficiency can reach 90% -95%.
A dielectric antenna device of this embodiment includes an antenna matching circuit 120, a circuit board 110 connected to a dielectric antenna, and the dielectric antenna with the above structure, where the circuit board 110 is connected to a feed-in terminal 102 of the dielectric antenna through the antenna matching circuit 120, and a ground terminal 107 of the dielectric antenna is connected to the circuit board 110 and grounded, the dielectric antenna device further includes a metal wire lead 130, the antenna matching circuit 120 is connected to the feed-in terminal 102 of the dielectric antenna through the metal wire lead 130, the ground terminal 107 of the dielectric antenna is connected to the circuit board 110 and grounded through the metal wire lead 130, and a mounting position of the dielectric antenna on the circuit board 110 is not limited, referring to fig. 5 and fig. 7.
A communication device of the present embodiment includes the dielectric antenna of the above-described structure and a dielectric antenna device having the dielectric antenna of the above-described structure, and the mounting position of the dielectric antenna on the circuit board 110 is not limited.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a dielectric antenna, includes the antenna body, the antenna body includes the dielectric body and locates feed-in end and the earthing terminal on dielectric body surface, its characterized in that, the antenna body is still including locating first electrode slice, second electrode slice, common electrode slice and the inductance post in the dielectric body, wherein: the first electrode plate is connected with the feed-in end, the first electrode plate and the common electrode plate are oppositely arranged, and a first capacitor is formed between the first electrode plate and the common electrode plate; the second electrode plate is connected with a grounding end, the second electrode plate and the common electrode plate are oppositely arranged to form a second capacitor between the second electrode plate and the common electrode plate, and two ends of the inductance column are respectively connected with the common electrode plate and the grounding end to be connected with the second capacitor in parallel to form a parallel resonance circuit; the first electrode plate and the second electrode plate are both positioned at the lower side of the common electrode plate.
2. A dielectric antenna as claimed in claim 1, wherein the first electrode patch is connected to the feed terminal by conductive studs and the second electrode patch is connected to the ground terminal by conductive studs.
3. A dielectric antenna according to claim 1, wherein the feed terminal and the ground terminal are each provided as a land structure.
4. A dielectric antenna as claimed in claim 1, wherein the first electrode patch and the common electrode patch are disposed in parallel opposition, and the second electrode patch and the common electrode patch are disposed in parallel opposition.
5. A dielectric antenna device comprising an antenna matching circuit and a circuit board connected to the dielectric antenna, characterized by further comprising the dielectric antenna according to any one of claims 1 to 4, wherein the circuit board is connected to a feed terminal of the dielectric antenna through the antenna matching circuit, and a ground terminal of the dielectric antenna is connected to the circuit board and grounded.
6. The device of claim 5, further comprising a metal trace, wherein the antenna matching circuit is connected to a feed-in terminal of the dielectric antenna through the metal trace, and a ground terminal of the dielectric antenna is connected to the circuit board through the metal trace and grounded.
7. A communication device, characterized in that it comprises a dielectric antenna according to any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059986.4A CN109149138B (en) | 2018-09-12 | 2018-09-12 | Dielectric antenna, dielectric antenna device and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059986.4A CN109149138B (en) | 2018-09-12 | 2018-09-12 | Dielectric antenna, dielectric antenna device and communication device |
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| Publication Number | Publication Date |
|---|---|
| CN109149138A CN109149138A (en) | 2019-01-04 |
| CN109149138B true CN109149138B (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811059986.4A Active CN109149138B (en) | 2018-09-12 | 2018-09-12 | Dielectric antenna, dielectric antenna device and communication device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116722363B (en) * | 2023-08-10 | 2023-10-20 | 成都天成电科科技有限公司 | Composite structure broadband phased array antenna unit and antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878864A2 (en) * | 1997-05-15 | 1998-11-18 | Murata Manufacturing Co., Ltd. | Chip antenna and mobile communication apparatus using the same |
| CN1407832A (en) * | 2001-06-15 | 2003-04-02 | 日立金属株式会社 | Surface mounted antenna and communication device therewith |
| JP2012095121A (en) * | 2010-10-27 | 2012-05-17 | Nec Saitama Ltd | Antenna and portable radio device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004328128A (en) * | 2003-04-22 | 2004-11-18 | Alps Electric Co Ltd | Antenna system |
| CN201623261U (en) * | 2010-01-14 | 2010-11-03 | 华新科技股份有限公司 | capacitive coupling antenna device |
| CN105075006B (en) * | 2013-03-15 | 2018-08-03 | Lg电子株式会社 | Antenna module and mobile terminal including the antenna module |
| GB2545918B (en) * | 2015-12-30 | 2020-01-22 | Antenova Ltd | Reconfigurable antenna |
| CN206116603U (en) * | 2016-10-28 | 2017-04-19 | 深圳鲲鹏无限科技有限公司 | Zeroth order resonant antenna and wireless router |
| CN107634329A (en) * | 2017-09-06 | 2018-01-26 | 嘉兴佳利电子有限公司 | A multilayer ceramic antenna and corresponding CPW board and dual-band Loop antenna |
-
2018
- 2018-09-12 CN CN201811059986.4A patent/CN109149138B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878864A2 (en) * | 1997-05-15 | 1998-11-18 | Murata Manufacturing Co., Ltd. | Chip antenna and mobile communication apparatus using the same |
| CN1407832A (en) * | 2001-06-15 | 2003-04-02 | 日立金属株式会社 | Surface mounted antenna and communication device therewith |
| JP2012095121A (en) * | 2010-10-27 | 2012-05-17 | Nec Saitama Ltd | Antenna and portable radio device |
Non-Patent Citations (1)
| Title |
|---|
| 一种LTCC芯片天线研制;郑轶等;《微波学报》;20090815;第25卷(第4期);第29-62页 * |
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| CN109149138A (en) | 2019-01-04 |
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Address after: Room 301, Building 7, Era Smart Rui Technology, No. 159 Luwu Sanlian Road, Changping Town, Dongguan City, Guangdong Province, 523000 Patentee after: DONGGUAN HEKANG ELECTRONICS CO.,LTD. Country or region after: China Address before: 523000, 1st Floor, Building C, Yuanchuang Power Industrial Park, No. 24 Tangjiao Road, Tangjiao Village, Changping Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN HEKANG ELECTRONICS CO.,LTD. Country or region before: China |
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