CN111029688B - Phase shifting circuit, phase shifter and electrically adjustable antenna - Google Patents
Phase shifting circuit, phase shifter and electrically adjustable antenna Download PDFInfo
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- CN111029688B CN111029688B CN201911423918.6A CN201911423918A CN111029688B CN 111029688 B CN111029688 B CN 111029688B CN 201911423918 A CN201911423918 A CN 201911423918A CN 111029688 B CN111029688 B CN 111029688B
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- 230000008878 coupling Effects 0.000 claims abstract description 24
- 238000010168 coupling process Methods 0.000 claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 claims abstract description 24
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 39
- 239000002184 metal Substances 0.000 claims description 36
- 230000010363 phase shift Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 9
- 230000001808 coupling effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/184—Strip line phase-shifters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention relates to a phase shifting circuit and a phase shifter. The movable circuit is slidably arranged in the accommodating cavity formed by the auxiliary circuit and the fixed circuit. The movable circuit layer is not only directly connected with the fixed circuit layer in a coupling electric connection manner, but also is connected with the auxiliary circuit in a coupling electric connection manner, so that the coupling effect between the movable circuit and the fixed circuit is enhanced. In addition, because the movable circuit is arranged in the accommodating cavity surrounded by the fixed circuit and the auxiliary circuit in a penetrating way, when the movable circuit slides, the movable circuit is always limited to a specific area, so that the coupling electric connection with the fixed circuit and the auxiliary circuit is kept. Therefore, the phase shifter can ensure stable performance without adopting an additional fixing piece, so that the phase shifter has a simple structure. In addition, the invention also provides an electrically tunable antenna.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a phase shift circuit, a phase shifter, and an electrically tunable antenna.
Background
In mobile communication network coverage, an electrically tunable base station antenna is one of the key devices of the coverage network, and a phase shifter is the most core component of the electrically tunable base station antenna. The existing phase shifter mainly comprises a medium sliding mode and a conductor sliding mode for realizing phase shifting.
The conductor sliding type phase shifter changes the electric length of the phase shifter by moving the conductor, thereby achieving the purpose of phase change. Typically comprising a fixed circuit, a movable coupling circuit. Fluctuations may exist during the sliding of the coupling circuit, so that a gap is generated between the coupling circuit and the fixed circuit, and the coupling between the coupling circuit and the fixed circuit is disabled. In order to ensure the reliability of the coupling between the coupling circuit and the fixing circuit, more fixing parts are generally used for pressing the coupling circuit against the surface of the fixing circuit. But this results in a complicated structure of the phase shifter.
Disclosure of Invention
Based on the above, it is necessary to provide a phase shift circuit, a phase shifter and an electrically tunable antenna with simple structures, aiming at the problem of complex structure of the existing phase shifter.
A phase shift circuit, comprising:
a fixed circuit having a fixed circuit layer;
the auxiliary circuit is arranged on the fixed circuit and is electrically connected with the fixed circuit layer, and a containing cavity is formed between the auxiliary circuit and the fixed circuit; and
The movable circuit is provided with a movable circuit layer, and the movable circuit is slidably arranged in the accommodating cavity in a penetrating manner and is respectively and electrically connected with the fixed circuit layer and the auxiliary circuit in a coupling manner.
In one embodiment, the fixing circuit further includes a fixing substrate, and the fixing circuit layer is formed on a side of the fixing substrate facing the auxiliary circuit.
In one embodiment, the auxiliary circuit comprises a metal plate body and pins protruding from edges of the metal plate body to the fixed circuit, bonding pads are arranged at positions of the fixed substrate corresponding to the pins, and the bonding pads are welded with the pins.
In one embodiment, the auxiliary circuit comprises a metal bottom plate and metal side plates bent towards the fixing circuit by edges of two opposite sides of the metal bottom plate, strip-shaped bonding pads are arranged at positions of the fixing substrate corresponding to the metal side plates, and the strip-shaped bonding pads are welded with end faces of the metal side plates.
In one embodiment, the auxiliary circuit is a hollow metal cylindrical structure, and one of the outer walls of the auxiliary circuit is attached to the fixed substrate and welded with the fixed substrate.
In one embodiment, each of the fixed line layers includes two parallel and spaced apart transmission lines.
In one embodiment, a spacer is provided between two of the transmission lines.
In one embodiment, the isolation belt is a metal sheet standing on the fixed substrate and consistent with the extending direction of the transmission line.
In one embodiment, the isolation belt is a circuit board which is covered on the fixed substrate and grounded.
In one embodiment, the fixed circuit includes a plurality of fixed line layers such that a plurality of output interfaces are formed on the fixed circuit.
In one embodiment, the movable circuit includes a movable substrate, and the movable circuit layer includes a first movable circuit layer and a second movable circuit layer formed on opposite sides of the movable substrate and coupled with the fixed circuit layer and the auxiliary circuit, respectively.
In one embodiment, the first movable wiring layer and the second movable wiring layer are electrically connected through a metallized via.
In one embodiment, the movable wiring layer matches the shape of the fixed wiring layer.
A phase shifter comprising a cavity and a phase shifting circuit according to any of the above preferred embodiments, the phase shifting circuit being housed within the cavity.
The movable circuit layer is not only directly connected with the fixed circuit layer in a coupling electric connection manner, but also connected with the auxiliary circuit in a coupling electric connection manner, so that the coupling effect between the movable circuit and the fixed circuit is enhanced. In addition, because the movable circuit is arranged in the accommodating cavity surrounded by the fixed circuit and the auxiliary circuit in a penetrating way, when the movable circuit slides, the movable circuit is always limited to a specific area, so that the coupling electric connection with the fixed circuit and the auxiliary circuit is kept. Therefore, the phase shifter can ensure stable performance without adopting an additional fixing piece, so that the phase shifter has a simple structure.
Furthermore, the invention provides an electrically tunable antenna comprising a phase shifter as described in the preferred embodiments above.
Drawings
FIG. 1 is a schematic diagram of a phase shifting circuit according to an embodiment of the present invention;
FIG. 2 is an exploded view of the phase shifting circuit of FIG. 1;
FIG. 3 is a schematic diagram of a phase shifting circuit according to another embodiment of the present invention;
FIG. 4 is an exploded view of the phase shifting circuit of FIG. 3;
FIG. 5 is a schematic diagram of a phase shifting circuit according to still another embodiment of the present invention;
FIG. 6 is an exploded view of the phase shifting circuit of FIG. 5;
fig. 7 is a schematic structural diagram of a fixing circuit according to an embodiment of the invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present invention provides a phase shift circuit 100. In addition, the invention also provides an electrically tunable antenna phase shifter and a phase shifter. By means of the phase shifter, the electrically tunable antenna can achieve adjustment of the declination angle, and therefore good network coverage is achieved. The phase shifter includes a cavity (not shown) and a phase shifting circuit 100 accommodated in the cavity.
Referring to fig. 2, the phase shift circuit 100 in the preferred embodiment of the invention includes a fixed circuit 110, an auxiliary circuit 120 and a movable circuit 130.
The fixed circuit 110 has a fixed wiring layer 111. The fixed line layer 111 may be in the form of a strip line, a microstrip line, or the like. The fixed line layer 111 is a main line for signal transmission in the phase shifter. An interface may be provided on each fixed line layer for use as an input interface 101 or an output interface 102 of the phase shifter. As shown in fig. 1, the fixed circuit 110 has a fixed circuit layer 111, and 1 input interface 101 and 1 output interface 102 are disposed on the fixed circuit layer 111. Thus, the phase shift circuit 100 can be applied to an input-output phase shifter.
Obviously, according to different requirements and application scenarios, the number of ports of the phase shifter can be adjusted accordingly, so the number of the fixed line layers 111 and the number of ports thereon in the fixed circuit 110 also change correspondingly. In other embodiments, the fixed circuit 110 includes a plurality of fixed line layers 111, such that a plurality of output interfaces 102 are formed on the fixed circuit 110. Such as:
The fixed circuit 110 shown in fig. 7 has 6 fixed line layers 111 thereon, and forms 7 output interfaces 102 and 1 input interface 101. At this time, the phase shift circuit 100 can be applied to an input seven-output phase shifter.
The fixed circuit 110 may be a PCB structure, and the fixed circuit layer 111 is printed. The fixing circuit 110 may have various circuit forms such as a dielectric circuit board structure or a metal stereo circuit structure.
In particular, in the present embodiment, the fixing circuit 110 further includes a fixing substrate 113, and the fixing circuit layer 111 is formed on a side of the fixing substrate 113 facing the auxiliary circuit 120. The fixing substrate 113 is generally formed of a dielectric material and can perform a bearing function, so as to facilitate fixing and mounting of the fixing circuit 110.
As shown in fig. 7, further, the plurality of fixed circuit layers 111 in the present embodiment may be sequentially arranged on the same fixed substrate 113 and electrically connected through a coaxial cable. In addition, the plurality of fixing substrates 113 provided with the fixing circuit layers 111 may be spliced together, so that the fixing circuit 110 has a plurality of fixing circuit layers 111.
The auxiliary circuit 120 is disposed at a position of the fixed circuit 110 corresponding to the fixed circuit layer 111 and electrically connected to the fixed circuit layer 111. As with the fixed circuit 110, the auxiliary circuit 120 may be in various circuit forms such as a PCB structure, a dielectric circuit board structure, or a metal stereo circuit structure. Since the auxiliary circuit 120 is electrically connected to the fixed line layer 111, the auxiliary circuit layer 120 can be regarded as a branch of the fixed circuit 110, and the auxiliary circuit layer 120 can be regarded as a sub-line for signal transmission in the phase shifter.
A receiving cavity (not shown) is formed between the auxiliary circuit 120 and the fixing circuit 110. The accommodating cavity is used for accommodating the movable circuit 130. The auxiliary circuit 120 and the fixing circuit 110 may be integrally formed. For example, the auxiliary circuit 120 and the fixing circuit 110 may be both dielectric circuit board structures. The dielectric substrates of the two are integrally formed, and a hollow cavity is formed; then, a fixed wiring layer 111 and other circuits of a predetermined shape are formed on the surface of the dielectric substrate by printing or the like.
However, due to the need to form a cavity structure, the integral molding has higher requirements on the precision of the mold and the molding process. Therefore, the auxiliary circuit 120 and the fixing circuit 110 in this embodiment are two separately formed components, and are assembled later. The shape and configuration of the auxiliary circuit 120 include various possibilities, so that the assembly of the auxiliary circuit with the fixing circuit 110 is also possible. Such as:
As shown in fig. 1 and 2, in the present embodiment, the auxiliary circuit 120 includes a metal plate 121 and a lead 123 protruding from an edge of the metal plate 121 toward the fixed circuit 110, a pad 1131 is provided at a position of the fixed substrate 113 corresponding to the lead 123, and the pad 1131 is soldered to the lead 123.
Specifically, the auxiliary circuit 120 is a pure metal member, so that the molding is simple and the reliability is high. The pads 1131 may be planar pads or socket pads. During assembly, the pins 123 are aligned with the bonding pads 1131, and then welding is realized by adopting modes such as furnace passing welding and the like, so that the processing efficiency can be remarkably improved. At this time, the fixed substrate 113 and the auxiliary circuit 120 may be respectively used as two opposite sidewalls of the accommodating cavity.
In addition, by changing the shape and width of the metal plate 121 and the width and pitch of the pins 123, impedance matching can be achieved for the phase shift circuit 100.
As shown in fig. 3 and 4, in another embodiment, the auxiliary circuit 120 includes a metal bottom plate 121' and metal side plates 123' bent toward the fixing circuit 110 from edges of opposite sides of the metal bottom plate 121', and bar-shaped bonding pads (not shown) are disposed at positions of the fixing substrate 113 corresponding to the metal side plates 123', and are welded to end surfaces of the metal side plates 123 '.
At this time, the auxiliary circuit 120 has a U-shaped groove structure, which is different from the auxiliary circuit 120 of the previous embodiment in that the metal side plate 123' replaces the pin 123.
In still another embodiment, as shown in fig. 5 and 6, the auxiliary circuit 120 is a hollow metal cylindrical structure, and one of the outer walls of the auxiliary circuit 120 is attached to the fixed substrate 113 and soldered to the fixed substrate 113.
Specifically, the fixing substrate 113 may also be provided with an elongated pad or a plurality of spot pads for soldering with the sidewalls of the auxiliary circuit 120. At this time, the housing cavity is located inside the auxiliary circuit 120.
Referring to fig. 1 and 2 again, the movable circuit 130 has a movable circuit layer 131. The movable line layer 131 may be a strip line or microstrip line structure. Also, the movable circuit 130 may be in various circuit forms such as a PCB structure, a dielectric circuit board structure, or a metal stereo circuit structure, as in the fixed circuit 110.
Further, the movable circuit 130 is slidably disposed in the accommodating cavity, and the movable circuit layer 131 is electrically coupled to the fixed circuit layer 111 and the auxiliary circuit 120, respectively. Specifically, insulating layers may be disposed on the movable circuit 130, the auxiliary circuit 120, and the fixed circuit 110, so as to avoid the movable circuit layer 131 from directly contacting the auxiliary circuit 120 and the fixed circuit 110, so as to implement coupling.
By sliding the movable circuit 130, the coupling amount of the movable circuit layer 131 with the fixed circuit layer 111 and the auxiliary circuit 120 can be changed, so as to change the electrical length in the phase shift circuit 100, and further realize the phase adjustment of each output interface 102.
In the case where the fixed circuit 110 includes a plurality of fixed line layers 111, a plurality of movable circuits 130 may be employed to couple with the plurality of fixed line layers 111, respectively. In addition, a movable circuit 130 including a plurality of movable wiring layers 131 may be used, and the plurality of movable wiring layers 131 are coupled with the plurality of fixed wiring layers 111, respectively.
Since the movable wiring layer 131 is not only directly coupled to the fixed wiring layer 111 but also coupled to the auxiliary circuit 120. The auxiliary circuit 120 can be regarded as a branch of the fixed circuit 110. Accordingly, the coupling effect between the movable circuit 130 and the fixed circuit 110 is reinforced, thereby making the performance of the phase shifter more stable.
The accommodating cavity is used for limiting the movable circuit 130. Therefore, the movable circuit 130 does not fluctuate widely during sliding, thereby preventing coupling failure with the fixed circuit 110 and the auxiliary circuit 120. Further, since the movable circuit 130 is pressed without using other components, the movable circuit 130 receives less sliding resistance.
In general, the thickness of the accommodating cavity in the natural state is equal to or slightly greater than the thickness of the movable circuit 130, so that the movable circuit 130 can be smoothly inserted into the accommodating cavity, but both sides of the accommodating cavity are kept in contact with the inner wall of the accommodating cavity. In this way, the inner wall of the accommodating cavity well plays a limiting role on the movable circuit 130 on the premise of not using other elements. Therefore, when the movable circuit 130 slides, the movable circuit can always keep contact with the inner wall of the accommodating cavity, so that the coupling stability is further ensured.
In the present embodiment, the movable circuit 130 includes a movable substrate 133, and the movable circuit layer 131 includes a first movable circuit layer (not shown) and a second movable circuit layer 1312 formed on opposite sides of the movable substrate 133 and coupled to the fixed circuit layer 111 and the auxiliary circuit 120, respectively.
Specifically, the first movable circuit layer and the second movable circuit layer 131 may be identical two circuit structures. Wherein the first movable line layer and the second movable line layer 1312 may be electrically connected through a metallized via (not shown). The first movable circuit layer is not shown because it is located on the downward side of the movable circuit 130 shown in fig. 2.
When the movable circuit 130 is disposed in the accommodating cavity, the first movable circuit layer and the second movable circuit layer 1312 can be respectively attached to two opposite inner walls of the accommodating cavity, so as to enhance the coupling effect between the movable circuit 130 and the auxiliary circuit 120 and the fixed circuit 110. In addition, in order to facilitate the sliding of the movable circuit 130, the end of the movable substrate 133 may be provided with a through hole as a driving portion of the movable circuit 130.
It should be noted that in other embodiments, the movable circuit 130 is not limited to the above-described structure. For example, the movable circuit 130 shown in fig. 3 and 4 is a three-dimensional metal circuit, and does not include a substrate, and the movable circuit 130 is a movable circuit layer 131 as a whole. Thus, two sides of the movable circuit layer 131 can be respectively attached to two inner walls opposite to the accommodating cavity.
In the present embodiment, the movable wiring layer 131 matches the shape of the fixed wiring layer 111.
Specifically, the shape matching refers to the orthographic projection of the movable wiring layer 131 on the fixed circuit 110, and at least partially overlaps the fixed wiring layer 111. In this way, the coupling effect of the movable wiring layer 131 and the fixed wiring layer 111 is further enhanced at the same size.
For example, in the present embodiment, each of the fixed line layers 111 includes two parallel transmission lines (not shown) disposed at intervals. Correspondingly, the movable line layer 131, in particular the first movable line layer, may be arranged in a U-shape. Each transmission line pair may correspond to one auxiliary circuit 120, or one auxiliary circuit 120 may simultaneously correspond to two transmission lines in the same fixed line layer 111.
In this embodiment, two auxiliary circuits 120 are disposed on each fixed circuit layer 111, corresponding to two transmission lines respectively.
Moreover, since the transmission line widths are different, the corresponding impedances are also different. Thus, by setting different widths of the transmission lines, impedance matching of the phase shifter can also be achieved.
It is understood that the shape of the fixed line layer 111 may be adjusted to various shapes such as L-shape and S-shape according to the requirement, and the shape of the fixed line layer 131 may be adjusted accordingly.
Referring to fig. 3 to 6, in one embodiment, a separation band 140 is disposed between two transmission lines. The isolation belt 140 can reduce mutual coupling between two transmission lines, so that indexes of the phase shifter are improved, and the isolation belt 140 can be in various forms and can only play a role in isolating coupling. Such as:
As shown in fig. 3 and 4, in one embodiment, the isolation belt 140 is a metal sheet standing on the fixed substrate 113 and aligned with the extending direction of the transmission line. The metal sheet has simple structure, is firm and reliable, and is beneficial to reducing the cost of the phase shifter.
In another embodiment, as shown in fig. 5 and 6, the isolation belt 140 is a circuit board that is covered on the fixed substrate 113 and grounded.
Specifically, the fixed substrate 113 may be a PCB circuit board, and is grounded through a metallized via. Since the circuit board can be attached to the surface of the fixed substrate 113, the surface height of the fixed circuit 110 can be reduced, thereby facilitating miniaturization of the phase shifter.
In the phase shift circuit 100, the movable circuit layer 131 is not only directly connected to the fixed circuit layer 111 but also electrically connected to the auxiliary circuit 120, so that the coupling between the movable circuit 130 and the fixed circuit 110 is enhanced. In addition, since the movable circuit 130 is disposed in the housing cavity defined by the fixed circuit 110 and the auxiliary circuit 120, the movable circuit 130 is always limited to a specific area when sliding, so as to maintain the coupling electrical connection with the fixed circuit 110 and the auxiliary circuit 120. Therefore, the phase shifter can ensure stable performance without adopting an additional fixing piece, so that the phase shifter has a simple structure.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (15)
1. A phase shift circuit, comprising:
a fixed circuit having a fixed circuit layer;
the auxiliary circuit is arranged on the fixed circuit and is electrically connected with the fixed circuit layer, and a containing cavity is formed between the auxiliary circuit and the fixed circuit; and
The movable circuit is provided with a movable circuit layer, and the movable circuit is slidably arranged in the accommodating cavity in a penetrating manner and is respectively and electrically connected with the fixed circuit layer and the auxiliary circuit in a coupling manner; the movable circuit layer comprises a first movable circuit layer and a second movable circuit layer which are respectively coupled with the fixed circuit layer and the auxiliary circuit; or the movable circuit is a three-dimensional metal circuit, and the whole movable circuit is a movable circuit layer.
2. The phase shift circuit of claim 1, wherein the fixed circuit further comprises a fixed substrate, and the fixed wiring layer is formed on a side of the fixed substrate facing the auxiliary circuit.
3. The phase shift circuit according to claim 2, wherein the auxiliary circuit includes a metal plate body and a pin protruding from an edge of the metal plate body toward the fixed circuit, a pad is provided at a position of the fixed substrate corresponding to the pin, and the pad is soldered to the pin.
4. The phase shift circuit according to claim 2, wherein the auxiliary circuit comprises a metal bottom plate and metal side plates bent toward the fixing circuit from edges of opposite sides of the metal bottom plate, strip-shaped bonding pads are arranged at positions of the fixing substrate corresponding to the metal side plates, and the strip-shaped bonding pads are welded with end faces of the metal side plates.
5. The phase shift circuit according to claim 2, wherein the auxiliary circuit has a hollow metal cylindrical structure, and one of the outer walls of the auxiliary circuit is attached to the fixed substrate and soldered to the fixed substrate.
6. The phase shift circuit of claim 2, wherein each of the fixed line layers comprises two parallel and spaced apart transmission lines.
7. The phase shift circuit of claim 6, wherein an isolation strip is disposed between two of the transmission lines.
8. The phase shift circuit according to claim 7, wherein the isolation belt is a metal sheet standing on the fixed substrate and aligned with the extending direction of the transmission line.
9. The phase shift circuit of claim 7, wherein the isolation strip is a circuit board disposed over the fixed substrate and grounded.
10. The phase shifting circuit of claim 1, wherein the fixed circuit comprises a plurality of fixed line layers such that a plurality of output interfaces are formed on the fixed circuit.
11. The phase shift circuit of claim 1, wherein when the movable circuit is disposed through the housing cavity, the first movable circuit layer and the second movable circuit layer are respectively attached to two inner walls opposite to the housing cavity.
12. The phase shift circuit of claim 1, wherein the first movable line layer and the second movable line layer are electrically connected by a metallized via.
13. The phase shift circuit of claim 1, wherein the movable line layer matches a shape of the fixed line layer.
14. A phase shifter comprising a cavity and a phase shifting circuit according to any one of claims 1 to 13, the phase shifting circuit being housed in the cavity.
15. An electrically tunable antenna comprising a phase shifter as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423918.6A CN111029688B (en) | 2019-12-31 | 2019-12-31 | Phase shifting circuit, phase shifter and electrically adjustable antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423918.6A CN111029688B (en) | 2019-12-31 | 2019-12-31 | Phase shifting circuit, phase shifter and electrically adjustable antenna |
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| Publication Number | Publication Date |
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| CN111029688A CN111029688A (en) | 2020-04-17 |
| CN111029688B true CN111029688B (en) | 2024-11-22 |
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| CN112864574A (en) * | 2020-12-25 | 2021-05-28 | 华南理工大学 | Antenna device and antenna module |
| CN112909453B (en) * | 2021-03-23 | 2025-01-24 | 京信通信技术(广州)有限公司 | Base station antenna and its phase shifter |
| CN112968259B (en) * | 2021-03-23 | 2024-06-14 | 京信通信技术(广州)有限公司 | Phase shifter and antenna |
| CN113540794B (en) * | 2021-07-01 | 2022-08-19 | 华南理工大学 | Phase shifting device, antenna and base station |
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| CN211125931U (en) * | 2019-12-31 | 2020-07-28 | 京信通信技术(广州)有限公司 | Phase-shifting circuit, phase shifter and electrically-tunable antenna |
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| KR101077011B1 (en) * | 2009-06-09 | 2011-10-26 | 서울대학교산학협력단 | Method for producing micromachined air-cavity resonator and a micromachined air-cavity resonator, band-pass filter and ocillator using the method |
| CN205081206U (en) * | 2015-08-28 | 2016-03-09 | 深圳市大富科技股份有限公司 | Tunable coupling device and RF communications device |
| CN109638457B (en) * | 2019-01-30 | 2023-09-29 | 京信通信技术(广州)有限公司 | Antenna and phase-shift feed device |
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| CN211125931U (en) * | 2019-12-31 | 2020-07-28 | 京信通信技术(广州)有限公司 | Phase-shifting circuit, phase shifter and electrically-tunable antenna |
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