CN108879035B - Dielectric sliding type phase shifter and base station antenna - Google Patents
Dielectric sliding type phase shifter and base station antenna Download PDFInfo
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- CN108879035B CN108879035B CN201810688994.9A CN201810688994A CN108879035B CN 108879035 B CN108879035 B CN 108879035B CN 201810688994 A CN201810688994 A CN 201810688994A CN 108879035 B CN108879035 B CN 108879035B
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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
- 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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Abstract
The invention relates to a dielectric sliding type phase shifter and a base station antenna. The feed network comprises a functional circuit and a phase-shifting circuit. The surface of each phase-shift circuit is covered with a dielectric plate, and the length of the phase-shift circuit covered by the dielectric plate can be changed by rotating the dielectric plate, so that the electrical length of the transmission line is changed, and phase adjustment is realized. Furthermore, the phase shift circuit and the dielectric plate are both arc-shaped. Therefore, when the dielectric plates of the phase shift unit are rotated about the axis passing through the center of the circle, the dielectric plates are confined within a circumferential range without exceeding the range of the corresponding phase shift circuit. That is, the process of each phase shifting circuit to effect phase adjustment is relatively independent. Therefore, the functional circuit and the phase-shifting circuit can be separately and independently designed, the design space of the circuit is greatly improved, the design difficulty of the phase shifter is greatly reduced, and the problem that the design space of the circuit in the traditional medium sliding type phase shifter is limited is solved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a dielectric sliding phase shifter and a base station antenna.
Background
In the signal covering process of mobile communication, the electrically-tuned antenna well meets the requirements of the industry with flexible beam adjustment and remote control functions, and is popular in the field of mobile communication. In recent years, with the deep development of mobile communication, electrically tunable antennas are required to be miniaturized, integrated, high-performance, low-cost, and the like, and the requirements for phase shifters, which are core components, are also increasing.
Phase shifters in mobile communications are generally classified into a network sliding type and a medium sliding type. The network sliding type phase shifter changes the phase by changing the physical length of the transmission path, but the type of phase shifter has problems of poor intermodulation, complicated process, and the like. The dielectric sliding type phase shifter is a phase shifter that achieves phase shift by changing the medium covered by the transmission path. Compared with a network sliding type phase shifter, the medium sliding type phase shifter has more uniform current distribution, and avoids intermodulation problems or other circuit problems caused by a sliding coupling circuit. Therefore, the dielectric sliding type phase shifter is widely used.
However, in the conventional dielectric sliding type phase shifter, since most of the circuits are closely covered by the dielectric, and there is cross interference between the modules, it is uniformly affected by the sliding dielectric. Therefore, the design space of the phase shifter circuit is limited, and the design difficulty and the structural complexity of the phase shifter are increased.
Disclosure of Invention
Accordingly, there is a need for an improved dielectric sliding phase shifter and a base station antenna with simple structure design.
A dielectric sliding phase shifter comprising:
a cavity;
the feed network is accommodated and fixed in the cavity and comprises a functional circuit and a phase-shifting circuit which are alternately and electrically connected, and the phase-shifting circuit is arc-shaped; and
the phase shifting unit corresponding to each phase shifting circuit is accommodated in the cavity, each phase shifting unit comprises a dielectric plate, the dielectric plate is of an arc-shaped flat structure, and the dielectric plate can rotate around an axis which passes through the circle center of the dielectric plate and is perpendicular to the surface of the dielectric plate in an operable manner;
the dielectric plate of the phase shift unit is covered on at least one side of the corresponding phase shift circuit and has the same extension direction with the phase shift circuit.
In one embodiment, the transmission line type of the feeding network is a PCB circuit structure or a metal conductor air strip line structure.
In one embodiment, the functional circuit and the phase shift circuit are detachably and electrically connected.
In one embodiment, each phase shift unit includes two dielectric plates, the two dielectric plates are disposed opposite to each other and spaced apart from each other, and the phase shift circuit is located between the two dielectric plates of the corresponding phase shift unit.
In one embodiment, the phase shift unit includes a support frame and a fan-shaped connector, the support frame is fixed in the cavity, the fan-shaped connector is rotatably mounted on the support frame, and the dielectric plate is disposed at an edge of the fan-shaped connector.
In one embodiment, the sidewall of the cavity is provided with a strip-shaped through hole, the phase shift unit further comprises a sliding connecting rod in transmission connection with the fan-shaped connecting piece, and the sliding connecting rod is slidably arranged in the strip-shaped through hole in a penetrating manner.
In one embodiment, the phase shift circuit and the dielectric plate are both semi-circular arc-shaped.
In one embodiment, the functional circuits and the phase shift circuits are alternately arranged and linearly arranged, and each phase shift circuit is electrically connected with two adjacent functional circuits, so that the feed network has a single-layer structure.
In one embodiment, the feeding network comprises a plurality of feeding networks, and the plurality of feeding networks in a single-layer structure are stacked.
In one embodiment, the functional circuits and the phase shift circuits are stacked and staggered, and the two functional circuits are electrically connected through one phase shift circuit, so that the feed network has a double-layer structure.
The invention also provides a base station antenna. The base station antenna comprises a dielectric sliding phase shifter as described in any of the above preferred embodiments.
According to the dielectric sliding type phase shifter, the dielectric plate covers the surface of each phase shifting circuit, the length of the phase shifting circuit covered by the dielectric plate can be changed by rotating the dielectric plate, the electrical length of the transmission line is further changed, and phase adjustment is achieved. Furthermore, the phase shift circuit and the dielectric plate are both arc-shaped. Therefore, when the dielectric plates of the phase shift unit are rotated about the axis passing through the center of the circle, the dielectric plates are confined within a circumferential range without exceeding the range of the corresponding phase shift circuit. That is to say, the process of each phase shift circuit for implementing phase adjustment is relatively independent, and when one phase shift circuit implements phase adjustment, its corresponding phase shift unit does not interfere with other parts of the feed network. Therefore, the functional circuit and the phase-shifting circuit can be separately and independently designed, the design space of the circuit is greatly improved, the design difficulty of the phase shifter is greatly reduced, and the problem that the design space of the circuit in the traditional medium sliding type phase shifter is limited is solved, so that the medium sliding type phase shifter is simple in structural design.
Drawings
FIG. 1 is a schematic diagram of a dielectric sliding phase shifter according to a preferred embodiment of the present invention;
fig. 2 is an exploded view of the dielectric sliding type phase shifter shown in fig. 1;
FIG. 3 is a schematic view of an internal block of the dielectric sliding phase shifter shown in FIG. 1;
FIG. 4 is an exploded view of a dielectric sliding phase shifter according to another embodiment;
FIG. 5 is a schematic view of an internal block of the dielectric sliding phase shifter shown in FIG. 4;
FIG. 6 is a schematic structural view of a feed network in the dielectric sliding phase shifter of FIG. 1;
fig. 7 is a schematic structural diagram of a feed network in a dielectric sliding phase shifter according to another embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying 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 "secured 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 as used herein are 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present invention provides a base station antenna and a dielectric sliding phase shifter 100, wherein the base station antenna includes the dielectric sliding phase shifter 100.
The dielectric sliding phase shifter 100 includes a plurality of output ports, which are respectively connected to a plurality of radiating elements of the base station antenna in a communication manner. The multi-path signal output with equal or unequal phase difference can be realized through a plurality of output ports of the dielectric sliding phase shifter 100.
Referring to fig. 2 and fig. 3, the dielectric sliding phase shifter 100 includes a cavity 110, a feeding network 120, and a phase shifting unit 130.
The cavity 110 is a strip shape and has an accommodating cavity. Wherein the cavity 110 may be integrally formed, typically by a pultrusion process. Specifically, in the embodiment, the cavity 110 is a double-layer longitudinal cavity structure, and the design of the upper and lower accommodating cavities is the same. Furthermore, in order to facilitate the installation of the feeding network 120, a card slot (not shown) is disposed inside the cavity 110.
The feeding network 120 is received and fixed in the cavity 110. Specifically, in the present embodiment, there are two feeding networks 120, and the two feeding networks are respectively accommodated in the upper and lower accommodating cavities of the cavity 110. Further, the feeding network 120 is fixed in the cavity 110 by an insulating fixing member.
The feeding network 120 includes a functional circuit 121 and a phase shift circuit 123. The functional circuit 121 is electrically connected alternately with the phase shift circuit 123. That is, two adjacent functional circuits 121 are electrically connected through one phase shift circuit 123. Therefore, there are at least two functional circuits 121 and at least one phase shift circuit 123. One functional circuit 121 at the end of the feed network 120 may implement signal input, and each of the remaining functional circuits 121 may implement one signal output (i.e., one output port may be provided). When N signals with predetermined phases need to be output, the feeding network 120 includes N +1 functional circuits 121 and N phase shift circuits 123.
As shown in FIGS. 3 and 5, 121a, 121b and 121c are all functional circuits, and 123a and 123b are phase shift circuits. The functional circuit 121 generally includes a matching circuit and a power divider to implement basic circuit functions of power distribution and matching connection. In addition, the functions of filtering, phase balancing, combining, lightning protection and the like can be integrated according to the use requirement of the actual circuit. The phase shift circuit 123 is located in the transmission path of the electrical signal, and moves the dielectric plate 131 of the phase shift unit 130 to change the electrical length thereof, thereby changing the output phase thereof.
Further, the phase shift circuit 123 is shaped like a circular arc. The feeding network 120 may be a metal network circuit formed by sheet metal or die casting, or a printed circuit formed by PCB printing. The arc-shaped phase shift circuit 123 means that the outline of the area covered by the transmission line of the phase shift circuit 123 is arc-shaped, and the routing path of the transmission line of the phase shift circuit 123 is not necessarily arc-shaped.
In addition, the transmission line form of the feeding network 120 may take the form of a microstrip line, a strip line, a coplanar waveguide, or the like. In this embodiment, the transmission line type of the feeding network 120 is a metal conductor air strip line structure. Therefore, the feeding network 120 has the advantages of low network insertion loss, low cost and the like. To reduce the cost, the transmission line form of the feeding network 120 may also be a common PCB circuit structure.
It should be noted that in other embodiments, the type of the feeding network 120 may be in other forms. For example, as shown in fig. 4 and 5, the feeding network 120 is of a PCB strip line structure. In addition, different circuit modules may be implemented with different transmission line types in the same feed network 120.
Referring to fig. 2 and 3 again, the phase shift unit 130 is accommodated in the cavity 110. Each phase shift circuit 123 corresponds to one phase shift unit 130. The phase shift unit 130 is matched with the corresponding phase shift circuit 123, so that the functional circuit 121 can output signals with specific phases. Therefore, when the number of the phase shift circuits 123 is N, the number of the phase shift units 130 is also N.
Each phase shift unit 130 includes a dielectric plate 131. The dielectric plate 131 is a plate-shaped structure formed of a microwave dielectric material, and may be formed of engineering plastics or microwave ceramics having good microwave characteristics. The dielectric plate 131 has a circular arc-shaped flat plate-like structure. That is, the outline of the outer edge of the dielectric plate 131 is circular arc-shaped. Accordingly, the dielectric plate 131 matches the shape of the phase shift circuit 123.
Further, the dielectric plate 131 is operable to rotate about an axis passing through the center of the dielectric plate 131 and perpendicular to the surface of the dielectric plate 131. The center of the dielectric plate 131 refers to the center of the circle on which the outer edge of the dielectric plate 131 is located. Therefore, when the dielectric sheet 131 is rotated about the axis, the range covered by the dielectric sheet 131 does not exceed the circumferential range of the circle on which the outer edge thereof is located. Specifically, the dielectric plate 131 may be mounted on the feeding network 120, or may be mounted on the inner wall of the cavity 110 through a structure such as a rotating shaft and a connecting member.
The dielectric plate 131 of the phase shift unit 130 is disposed on at least one side of the corresponding phase shift circuit 123 and has the same extending direction as the phase shift circuit 123. In order to make the matching between the dielectric plate 131 and the phase shift circuit 123 better, the radii of curvature of the dielectric plate 131 and the phase shift circuit 123 may be set to be substantially the same. Specifically, the dielectric plate 131 may be disposed on one side of the phase shift circuit 123 or on both sides of the phase shift circuit 123. Further, the dielectric plate 131 may be attached to the surface of the phase shift circuit 123 or may be spaced apart from the phase shift circuit 123. Wherein, the distance between the two is not suitable to be too large when the two are arranged at intervals, and the distance can be selected between 0.05 mm and 0.2 mm.
The surface of the dielectric plate 131 is also provided with areas with different thicknesses or hollows. Therefore, the impedance of the transmission line in the phase shift circuit 123 can be matched to a specific impedance even when the dielectric plate 131 rotates, and dynamic impedance matching is realized, so that the impedance is electrically connected to the port of the functional circuit 121 having the specific impedance on the premise of ensuring the circuit index.
When the dielectric plate 131 is rotated, the dielectric plate 131 can slide in the extending direction of the phase shift circuit 123, thereby changing the length of the phase shift circuit 123 covered by the dielectric plate 131. Further, the electrical length of the transmission line in the phase shift circuit 123 is also changed, thereby realizing phase adjustment. Since the feed network 120 has no design of coupling and electrical connection when phase adjustment is implemented, the stability of important indexes of the components, such as standing wave, amplitude phase, third-order intermodulation, and the like, is ensured.
Moreover, the dielectric plate 131 of the phase shift unit 130 does not cover a range beyond the circumference of the circle where the outer edge of the dielectric plate is located when the dielectric plate rotates. The phase shift circuit 123 corresponding to each phase shift unit 130 can be disposed within the circumferential range corresponding to the phase shift unit 130. That is, the phase shift units 130 perform phase adjustment independently for each phase shift circuit 123, and when a phase shift circuit 123 performs phase adjustment, the corresponding phase shift unit 130 does not interfere with other parts of the feeding network 120.
Therefore, the functional circuit 121 and the phase shift circuit 123 can be separately and independently designed, the design space of the circuit is greatly improved, the design difficulty of the phase shifter is greatly reduced, and the problem that the design space of the circuit in the traditional medium sliding type phase shifter is limited is solved.
In this embodiment, each phase shift unit 130 includes two dielectric plates 131, the two dielectric plates 131 are disposed opposite to each other at an interval, and the phase shift circuit 123 is located between the two dielectric plates 131 of the corresponding phase shift unit 130.
Specifically, the two dielectric plates 131 can rotate synchronously, and the rotation axis of the two dielectric plates 131 is an axis passing through the centers of the circles of the two dielectric plates. If the phase shift unit 130 has only one dielectric plate 131, the dielectric plate 131 can cover only one side of the phase shift circuit 123, and the other side is air. Since the dielectric constant of air is low, the phase adjustment effect is poor. If the two sides of the phase shift circuit 123 are covered with the dielectric plates 131, the electrical length change of the transmission line caused by the synchronous rotation of the two dielectric plates 131 is more obvious, so the phase adjustment effect is better.
In the present embodiment, the phase shift circuit 123 and the dielectric plate 131 are both semi-circular.
Specifically, a semicircular arc shape and a half circular arc shape. Under the condition of a certain length, the occupied space of the semi-arc shape is smaller. Therefore, it is advantageous to make the layout of the dielectric sliding type phase shifter 100 compact.
The phase shift unit 130 does not interfere with other parts of the feeding network 120 during phase adjustment, and there is no coupling and electrical connection between the parts in the feeding network 120. Therefore, each functional circuit 121 and the phase shift circuit 123 in the feeding network 120 can be designed independently, so that the manufacturing of the feeding network 120 is simplified, the manufacturing difficulty is greatly reduced, the cost is correspondingly reduced, and the efficiency is improved.
Moreover, different phase shifting circuits 123 and functional circuits 121 may be developed to form a modular platform architecture. According to different requirements for the port number, the power distribution ratio or other realization functions of the feed network 120, corresponding combination and collocation can be carried out, so that the development period is greatly shortened.
In order to facilitate the combination, in the embodiment, the functional circuit 121 and the phase shift circuit 123 are electrically connected in a detachable manner.
Specifically, the feeding network 120 may be formed by a metal plate or die casting. At this time, the functional circuit 121 and the phase shift circuit 123 may form a matching engaging structure, and the functional circuit 121 and the phase shift circuit 123 may be electrically connected. In addition, the feeding network 120 may be formed by PCB printing. At this time, the functional circuit 121 and the phase shift circuit 123 may be provided with a connector and a slot that are adapted to each other, and the functional circuit 121 and the phase shift circuit 123 are electrically connected by inserting the connector and the slot.
Therefore, when the feeding network 120 is combined, only the original module needs to be disassembled and assembled into a new module, and the operation is convenient.
In the present embodiment, the phase shift unit 130 includes a support frame 133 and a fan-shaped connecting member 135. The support 133 is fixed in the cavity 110, the fan-shaped connector 135 is rotatably mounted on the support 133, and the dielectric plate 131 is disposed on an edge of the fan-shaped connector 135.
Specifically, the support bracket 133 is generally made of an insulating material. When the feeding network 120 is a metal conductor air strip line structure, it can be fixed in the cavity 110 through the supporting frame 133, so as to avoid short circuit caused by direct contact between the feeding network 120 and the cavity 110. In addition, the commonly used metal feeding network lacks a supporting point, and if a supporting structure is disposed on the inner wall of the cavity 110 to mount the dielectric plate 131, the complexity of the cavity 110 is increased, and the cost is further increased. The support frame 133 can support the dielectric plate 131, thereby facilitating the installation of the dielectric plate 131.
It should be noted that in other embodiments, the dielectric plate 131 may be mounted in other manners. For example, as shown in fig. 4 and 5, the feeding network 120 is a PCB strip line structure, and the board body of the PCB can provide a supporting function. Therefore, the dielectric board 131 can be directly mounted by drilling holes in the substrate of the PCB without providing additional support frames.
Further, referring to fig. 1 again, in the present embodiment, the sidewall of the cavity 110 is formed with a strip-shaped through hole 111. The phase shift unit 130 further includes a sliding link 137 in transmission connection with the fan-shaped connector 135, and the sliding link 137 is slidably disposed in the strip-shaped through hole 111.
In addition, the sliding link 137 may be drivingly connected to a drive (e.g., a motor) in the base station antenna described above. When the phase of the output signal needs to be changed, the driving device drives the sliding connecting rod 137 to swing in the strip-shaped through hole 111, and further drives the fan-shaped connecting piece 135 to rotate, so as to realize the relative movement of the dielectric plate 131 and the phase shift circuit 123.
Depending on the usage environment, there is a corresponding requirement for the size of the dielectric sliding type phase shifter 100. On the premise of ensuring the alternate electrical connection between the functional circuit 121 and the phase shift circuit 123, the feed network 120 has a plurality of organization modes in the cavity 110, and the organization mode of the feed network 120 directly determines the size of the dielectric sliding phase shifter 100.
As shown in fig. 6, in the present embodiment, the functional circuits 121 and the phase shift circuits 123 are alternately arranged and linearly arranged, and each phase shift circuit 123 is electrically connected to two adjacent functional circuits 121, so that the feeding network 120 has a single-layer structure.
Specifically, the functional circuits 121 and the phase shift circuits 123 are formed on the same plane, and one phase shift circuit 123 is disposed between two adjacent functional circuits 121. At this time, the dielectric sliding type phase shifter 100 has a large longitudinal length and a small thickness.
Further, in the present embodiment, the feeding network 120 includes a plurality of feeding networks 120, and the plurality of feeding networks 120 in a single-layer structure are stacked. As the number of layers of the feeding network 120 increases, the number of functional circuits 121 also increases accordingly, so that the number of output ports can be increased.
It should be noted that, according to the actual requirement of the circuit, the number and kinds of the functional circuits 121 and the phase shift circuits 123 in each feeding network 120, and the number of the feeding networks 120 can be selected.
In another embodiment, as shown in fig. 7, the functional circuits 121 and the phase shift circuits 123 are stacked and staggered, and two functional circuits 121 are electrically connected through one phase shift circuit 123, so that the feeding network 120 has a double-layer structure.
Specifically, the plurality of functional circuits 121 are formed in one plane, and the phase shift circuit 123 is formed in another plane, which are stacked and spaced apart. In a preferred embodiment, one phase shift circuit 123 is electrically connected to two adjacent functional circuits 121. At this time, when the output port and the circuit type of the feed network 120 are the same, the dielectric sliding type phase shifter 100 has a small longitudinal length and a large thickness.
It should be noted that the organization of the feeding network 120 is not limited to the above two types, and on the premise of ensuring the alternate electrical connection of the functional circuit 121 and the phase shift circuit 123, each module can also be flexibly arranged in cascade according to specific engineering conditions.
In the dielectric sliding phase shifter 100, the dielectric plate 131 covers the surface of each phase shift circuit 123, and the length of the phase shift circuit 123 covered by the dielectric plate 131 can be changed by rotating the dielectric plate 131, so as to change the electrical length of the transmission line, thereby realizing phase adjustment. Further, the phase shift circuit 123 and the dielectric plate 131 are both arc-shaped. Therefore, when the dielectric plate 131 of the phase shift unit 130 is rotated about the axis passing through the center of the circle, the dielectric plate 131 is limited to a circumferential range without exceeding the range of the corresponding phase shift circuit 123. That is, the phase adjustment process of each phase shift circuit 123 is relatively independent, and when one phase shift circuit 123 performs phase adjustment, the corresponding phase shift unit 130 does not interfere with other parts of the feeding network 120. Therefore, the functional circuit 121 and the phase shift circuit 123 can be separately and independently designed, which greatly improves the design space of the circuit, greatly reduces the design difficulty of the phase shifter, and solves the problem of limited design space of the circuit in the traditional dielectric sliding type phase shifter, so that the structural design of the dielectric sliding type phase shifter 100 is simple.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
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 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 (9)
1. A dielectric sliding phase shifter, comprising:
a cavity;
the feed network is accommodated and fixed in the cavity and comprises a functional circuit and a phase-shifting circuit which are alternately and electrically connected, and the phase-shifting circuit is arc-shaped; and
the phase shifting unit corresponding to each phase shifting circuit is accommodated in the cavity, each phase shifting unit comprises a dielectric plate, the dielectric plate is of an arc-shaped flat structure, and the dielectric plate can rotate around an axis which passes through the circle center of the dielectric plate and is perpendicular to the surface of the dielectric plate in an operable manner;
the dielectric plate of the phase shift unit is covered on at least one side of the corresponding phase shift circuit and has the same extension direction with the phase shift circuit; the functional circuit is detachably and electrically connected with the phase-shifting circuit;
in addition, the phase shift unit comprises a support frame and a fan-shaped connecting piece, the support frame is fixed in the cavity, the fan-shaped connecting piece is rotatably arranged on the support frame, and the dielectric plate is arranged at the edge of the fan-shaped connecting piece.
2. A dielectric sliding phase shifter according to claim 1, wherein the transmission line type of the feeding network is a PCB circuit structure or a metal conductor air strip line structure.
3. The dielectric sliding type phase shifter according to claim 1, wherein each phase shift unit includes two of the dielectric plates, the two dielectric plates are disposed opposite to each other and spaced apart from each other, and the phase shift circuit is located between the two dielectric plates of the corresponding phase shift unit.
4. The dielectric sliding phase shifter according to claim 1, wherein a through hole is formed in a side wall of the cavity, and the phase shifting unit further comprises a sliding link in transmission connection with the fan-shaped connecting member, the sliding link being slidably inserted into the through hole.
5. The dielectric sliding phase shifter according to claim 1, wherein the phase shift circuit and the dielectric plate are each in a semi-circular arc shape.
6. The dielectric sliding phase shifter according to any one of claims 1 to 5, wherein the functional circuits and the phase shift circuits are alternately arranged and linearly arranged, and each of the phase shift circuits is electrically connected to two adjacent functional circuits, so that the feeding network has a single-layer structure.
7. The dielectric sliding phase shifter according to claim 6, wherein the feeding network comprises a plurality of feeding networks, and the plurality of feeding networks in a single-layer structure are stacked.
8. The dielectric sliding phase shifter according to any one of claims 1 to 5, wherein the functional circuits are stacked and interleaved with the phase shift circuits, and two functional circuits are electrically connected through one of the phase shift circuits, so that the feed network has a double-layer structure.
9. A base station antenna comprising a dielectric sliding phase shifter according to any one of claims 1 to 8.
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| CN201810688994.9A CN108879035B (en) | 2018-06-28 | 2018-06-28 | Dielectric sliding type phase shifter and base station antenna |
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| CN201810688994.9A CN108879035B (en) | 2018-06-28 | 2018-06-28 | Dielectric sliding type phase shifter and base station antenna |
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| CN109687062A (en) * | 2018-12-04 | 2019-04-26 | 京信通信系统（中国）有限公司 | Antenna and its phase shifting equipment |
| CN111342174B (en) * | 2020-03-12 | 2021-03-30 | 华南理工大学 | Filtering phase shifter and antenna |
| CN111342175B (en) * | 2020-03-13 | 2022-02-25 | 佛山市粤海信通讯有限公司 | Stripline phase shifter and antenna |
| CN111816959B (en) * | 2020-06-15 | 2021-07-13 | 华南理工大学 | Phase shifting module and phase shifter with same |
| CN111668578A (en) * | 2020-07-06 | 2020-09-15 | 武汉虹信通信技术有限责任公司 | Dielectric phase shifter and base station antenna |
| CN111952699A (en) * | 2020-08-31 | 2020-11-17 | 京信通信技术(广州)有限公司 | Phase shifter and antenna |
| CN112216987A (en) * | 2020-10-21 | 2021-01-12 | 京信通信技术(广州)有限公司 | Base station antenna and phase shifter thereof |
| CN112531346A (en) * | 2020-10-30 | 2021-03-19 | 重庆晖速智能通信有限公司 | Rotating structure of phase shifter |
| CN116491022B (en) * | 2020-11-11 | 2024-04-23 | 上海诺基亚贝尔股份有限公司 | Phase shifter and antenna device |
| CN215299473U (en) * | 2021-01-15 | 2021-12-24 | 瑞典爱立信有限公司 | Phase shifter, antenna unit comprising same and base station |
| CN113410592B (en) * | 2021-06-07 | 2022-05-24 | 京信通信技术(广州)有限公司 | Base station, antenna and phase-shifting device |
| CN113823884B (en) * | 2021-09-22 | 2022-07-19 | 中信科移动通信技术股份有限公司 | Dielectric phase shifter and base station antenna |
| CN115911789B (en) * | 2022-12-30 | 2024-04-30 | 京信通信技术(广州)有限公司 | Antenna device and phase shifter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798675A (en) * | 1997-02-25 | 1998-08-25 | Radio Frequency Systems, Inc. | Continuously variable phase-shifter for electrically down-tilting an antenna |
| CN1338790A (en) * | 2000-08-12 | 2002-03-06 | Kmw株式会社 | Signal processor for shifting phases of N input signals |
| CN101821899A (en) * | 2007-10-05 | 2010-09-01 | Ace天线株式会社 | Phase shifter where roration member is combined with guide member |
| CN206451798U (en) * | 2016-09-18 | 2017-08-29 | 深圳慧联达科技有限公司 | Ultra-wideband single step mode phase shifter and antenna for base station |
-
2018
- 2018-06-28 CN CN201810688994.9A patent/CN108879035B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798675A (en) * | 1997-02-25 | 1998-08-25 | Radio Frequency Systems, Inc. | Continuously variable phase-shifter for electrically down-tilting an antenna |
| CN1338790A (en) * | 2000-08-12 | 2002-03-06 | Kmw株式会社 | Signal processor for shifting phases of N input signals |
| CN101821899A (en) * | 2007-10-05 | 2010-09-01 | Ace天线株式会社 | Phase shifter where roration member is combined with guide member |
| CN206451798U (en) * | 2016-09-18 | 2017-08-29 | 深圳慧联达科技有限公司 | Ultra-wideband single step mode phase shifter and antenna for base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108879035A (en) | 2018-11-23 |
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