WO2019128217A1

WO2019128217A1 - Phase shifting apparatus, antenna and base station

Info

Publication number: WO2019128217A1
Application number: PCT/CN2018/097594
Authority: WO
Inventors: 苏国生
Original assignee: 京信通信系统（中国）有限公司; 京信通信技术(广州)有限公司; 京信通信系统（广州）有限公司; 天津京信通信系统有限公司
Priority date: 2017-12-29
Filing date: 2018-07-27
Publication date: 2019-07-04
Also published as: CN108232378B; CN108232378A

Abstract

Provided is a phase shifting apparatus, comprising two phase shifters, and at least one combiner arranged between the two phase shifters. The combiner comprises an output end and two input ends, and each of the phase shifters comprises at least one output end; and one input end of the combiner is connected to an output end of one of the two phase shifters, and the other input end of the combiner is connected to an output end of the other phase shifter. The phase shifter comprises at least two successively connected U-shaped phase shifting circuits, and an output end of one U-shaped phase shifting circuit of any two adjacent U-shaped phase shifting circuits is respectively connected to an input end of the other U-shaped phase shifting circuit and an input end of the combiner. The phase shifting apparatus of the present invention uses fewer cables and solder joints, and has a smaller volume and a higher integration degree. Correspondingly, further provided are an antenna using the phase shifting apparatus, and a base station.

Description

Phase shifting device, antenna and base station

Technical field

The present invention relates to the field of mobile communication antennas, and in particular, to a phase shifting device, and a corresponding antenna and base station.

Background technique

With the development of mobile communication, multi-frequency antennas play an increasingly important role in network coverage. In order to reduce windward area and facilitate network deployment, multi-frequency antenna miniaturization has become a hot research topic for major antenna manufacturers. One solution for miniaturization of multi-frequency antennas is to use vibrator multiplexing technology, which can replace the traditional two independent arrays with wide-band oscillators. The wide-band oscillators are connected to the combiner, and the two frequency bands are separated and shifted. The phase devices are connected to achieve the effect of independent ESC. The phase shifter is the core component of the ESC base station antenna. The performance of the phase shifter directly determines the performance of the ESC antenna, which in turn affects the network coverage quality. Therefore, the importance of the phase shifter in the field of mobile base station antennas is self-evident. .

In the prior art, integrating the phase shifter and the combiner module becomes a trend, usually by fixing the combiner to the phase shifter instead of the combiner like a conventional antenna placed under the vibrator and fixed on the reflector. In this way, the phase shifter and combiner can be produced as one component, but the number of cables and solder joints is not reduced, and the phase shifter component cable is too much, which is a challenge for phase shifter wiring and soldering.

Summary of the invention

It is an object of the present invention to provide a phase shifting device which is characterized by a small volume and a high degree of integration.

Another object of the present invention is to provide an antenna that utilizes the phase shifting device, thereby reducing the overall volume of the antenna.

It is still another object of the present invention to provide a base station that utilizes the antenna.

In order to achieve the above object, the present invention provides the following technical solutions:

The present invention provides a phase shifting device comprising two phase shifters and at least one combiner disposed between the two phase shifters; the combiner includes an output end and two input ends, each of the shifting The phase converter includes at least one output, an input of the combiner is coupled to an output of one of the two phase shifters, and the other input of the combiner and the other phase shifter The output terminal is connected; the phase shifter comprises at least two U-shaped phase shifting circuits connected in sequence, and the output ends of one U-shaped phase shifting circuit in any two adjacent U-shaped phase shifting circuits are respectively connected to another U The output of the phase shifting circuit is connected to an input of the combiner.

Preferably, the two phase shifters and the combiner are disposed on the same PCB board.

Further, any two adjacent U-shaped phase shifting circuits are connected by a fixed circuit, the U-shaped phase shifting circuit is coupled to the fixed circuit, and the U-shaped phase shifting circuit is movably sleeved on the fixed On the circuit.

Specifically, the fixed circuit includes a power splitter, and the power splitter includes an input end, a first output end, and a second output end, wherein the input end is adjacent to one U of two adjacent U-shaped phase shifting circuits An output terminal of the phase shifting circuit is connected, the first output terminal is connected to an input end of another U-shaped phase shifting circuit of the two adjacent U-shaped phase shifting circuits, and the second output end is coupled to the An input of the router is connected.

Preferably, the U-shaped phase shifting circuit and the fixed circuit are insulated from each other.

Further, the phase shifting device further includes a driving medium element matched with the phase shifter, the driving medium element including at least two connecting portions, each of the connecting portions being respectively connected to the U-shaped phase shifting circuit .

Preferably, the number of combiners is less than or equal to the number of outputs of each of the phase shifters.

Specifically, the combiner includes a first frequency band circuit and a second frequency band circuit, the first frequency band circuit includes a filter circuit capable of filtering a second frequency band, and the second frequency band circuit includes a filter circuit capable of filtering the first frequency band .

Accordingly, the present invention also provides an antenna comprising the phase shifting device according to any one of the above aspects, wherein the output of the combiner is connected to the radiating unit.

Correspondingly, the present invention also provides a base station, comprising the antenna according to any one of the above aspects.

Compared with the prior art, the solution of the invention has the following advantages:

In the phase shifting device of the present invention, by providing a combiner between the two phase shifters, the output ends of the phase shifters are connected to the combiner to achieve the purpose of combining the frequency bands in the two phase shifters. The phase shifter includes two U-shaped phase shifting circuits connected in series, so that the phase shifting device has a small volume and a high degree of integration. At the same time, the technical solution of the present invention makes fewer cables are used between the phase shifter and the combiner, and there are fewer solder joints between the connected components, thereby improving the performance of the phase shifting device.

In the phase shifting device of the present invention, the U-shaped phase shifting circuit is movable along the fixed circuit by an external force, so that the phase of the phase shifter can be changed.

In the phase shifting device of the present invention, each of the connecting portions on the driving medium element is respectively connected to the U-shaped phase shifting circuit, so that the U-shaped phase shifting circuit can be driven along the fixed by moving the driving medium element The circuit moves to change the phase of the phase shifter.

In the phase shifting device of the present invention, the number of the U-shaped phase shifting circuits in each of the phase shifters is equal to the number of the combiners, and the output ports of the two phase shifters can be connected in a combined manner.

In the phase shifting device of the present invention, the first frequency band circuit includes a filtering circuit capable of filtering the second frequency band, such that the first frequency band circuit only passes the signal of the first frequency band; similarly, the second frequency band circuit includes capable of The filter circuit of the first frequency band is filtered such that the second frequency band circuit only passes the signal of the second frequency band.

The antenna of the present invention includes the phase shifting device and the radiating unit, wherein the radiating unit is connected to the output end of the combiner, and the radiating unit can be frequency-multiplexed so that the antenna has a small volume.

The base station of the present invention includes the antenna and thus has the advantages of the antenna.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic structural view of an exemplary embodiment of a phase shifting device of the present invention;

2 is a schematic structural view of another embodiment of a phase shifting device of the present invention;

3 is a schematic structural view of still another embodiment of a phase shifting device of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

Figure 1 shows an exemplary embodiment of a phase shifting device of the present invention. Specifically, the phase shifting device 100 of the present invention includes a first phase shifter 2, a second phase shifter 3, and at least one combiner 4, and the combiner 4 is disposed in the first phase shifter 2 and Between the two phase shifters 3. Preferably, the first phase shifter 2 and the second phase shifter 3 are phase shifters of the same type. The combiner 4 includes a first input 41, a second input 42 and an output 43, the first phase shifter 2 and the second phase shifter 3 respectively comprising at least one output, for example The first phase shifter 2 includes an output 212 and the second phase shifter 3 includes an output 312. One input end of the combiner 4 is connected to an output end of one of the two phase shifters, and the other input end of the combiner 4 is connected to an output end of another phase shifter, for example, the combination The first input 41 of the router 4 is connected to the output 212 of the first phase shifter 2, and the second input 42 of the combiner 4 is connected to the output 312 of the second phase shifter 3 . The band signal input from the input terminal 101 of the first phase shifter 2 and the band signal input from the input terminal 102 of the phase shifter 3 are combined in the combiner 4, from the combiner The output 43 of 4 is output.

Specifically, each of the phase shifters includes at least two U-shaped phase shifting circuits connected in series, and the U-shaped phase shifting circuit is made of a metal material. In this embodiment, the phase shifter 2 includes U-shaped

phase shifting circuits

21, 22 and 23, and the input end 211 of the U-shaped phase shifting circuit 21 is connected to the input terminal 101 of the phase shifting device 100, optionally An input end of one U-phase phase shifting circuit of two adjacent U-shaped phase shifting circuits is connected to an output end of another U-shaped phase shifting circuit, for example, an output terminal 212 of the U-shaped phase shifting circuit 21 The input terminal 221 of the U-shaped phase shifting circuit 22 is connected to ensure that a signal input from the input terminal 101 of the phase shifting device 100 can be transmitted to each of the U-shaped phase shifting circuits of the phase shifter 2. An output of at least one of all U-shaped phase shifting circuits is coupled to an input of said combiner 4, for example, an output 212 of said U-shaped phase shifting circuit 21 and an input of said combiner 4 41 connections. Correspondingly, the phase shifter 3 comprises U-shaped

phase shifting circuits

31, 32 and 33, and the input end 311 of the U-shaped phase shifting circuit 31 is connected to the input terminal 102 of the phase shifting device 100, adjacent to two The input end of one U-shaped phase shifting circuit in the U-shaped phase shifting circuit is connected to the output end of another U-shaped phase shifting circuit, for example, the output end 312 of the U-shaped phase shifting circuit 31 is shifted with the U-shaped phase The inputs of the circuit 32 are connected to ensure that signals input from the input 102 of the phase shifting device 100 can be passed to each of the U-phase shifting circuits of the phase shifter 3. An output of at least one of all U-shaped phase shifting circuits is coupled to an input of said combiner 4, for example, an output 312 of said U-shaped phase shifting circuit 31 and an input of said combiner 4 42 connections.

It can be seen that in the phase shifting device 100 of the present invention, by providing the combiner 4 between the first phase shifter 2 and the second phase shifter 3, the output ends of the phase shifters are combined with the combined The router 4 is connected to achieve the purpose of combining the frequency bands in the two phase shifters 2, 3. Due to the use of a U-shaped phase shifting circuit, the phase shifting device 100 can be made to have a small volume and a high degree of integration. At the same time, the technical solution of the present invention makes fewer cables are used between the phase shifters 2, 3 and the combiner 4, and there are fewer solder joints between the connected components, thereby improving the phase shifting device 100. performance.

Preferably, the first phase shifter 2, the second phase shifter 3 and the combiner 4 are disposed on the same side of the same PCB board 1.

Preferably, the number of outputs of the first phase shifter 2 and the second phase shifter 3 is the same, and the number of the combiners 4 is less than or equal to the number of output ends of each of the phase shifters. Preferably, the number of outputs of the first phase shifter 2 is equal to the number of the combiners 4, and the number of outputs of the second phase shifter 3 is equal to the number of the combiners 4. The output ports of the first phase shifter 2 and the second phase shifter 3 can be connected in a combined manner.

Further, the phase shifting device 100 further includes a fixed

circuit

24, 34 disposed on the PCB board 1, and any two adjacent first phase shifters 2 of the U-shaped phase shifting circuit pass the fixing The circuit 24 is connected, and any two adjacent U-phase shifting circuits of the second phase shifter 3 are connected by the fixed circuit 34, preferably, each of the U-shaped phase shifting circuits and the corresponding fixed circuit The coupling is coupled such that each of the U-shaped phase shifting circuits is coupled to a corresponding fixed circuit to form a closed loop. Each of the U-shaped phase shifting circuits is sleeved on a corresponding fixed circuit and the U-shaped phase shifting circuit is movable along the fixed circuit. The U-phase shifting circuit is moved along the corresponding fixed circuit by applying an external force, thereby changing the phase of the phase shifter.

Specifically, the fixed

circuits

24 and 34 are all provided with a power splitter (not labeled, the same below), and the power splitter includes an input end, a first output end, and a second output end. Wherein the input end is connected to an output end of a U-shaped phase shifting circuit of two adjacent U-shaped phase shifting circuits, and the first output end is adjacent to two of the U-shaped phase shifting circuits An input of a U-shaped phase shifting circuit is coupled, and the second output is coupled to an input of the combiner. For example, in the first phase shifter 2, an input end of the power splitter is connected to an output terminal 212 of the U-shaped phase shifting circuit 21, and a first output end of the power splitter and the U The input terminal 22 of the phase shifting circuit 22 is connected, and the second output of the power splitter is connected to the input 41 of the combiner 4.

Preferably, each of the U-shaped phase shifting circuits and the fixed circuit are insulated from each other. When the U-shaped phase shifting circuit is a PCB circuit, the surface of the U-shaped phase shifting circuit may be coated with green oil or passed through a film to achieve its purpose of being insulated from the fixed circuit; when the U-shaped phase shifting circuit is adopted In the case of a metal structure, the surface of the U-shaped phase shifting circuit may be insulated by a process such as hard anodization.

Referring to FIG. 2, the phase shifting device 100 further includes a first driving medium element 5 and a second driving medium element 6, the first driving medium element 5 including at least two first connecting portions 51, the first connection The number of portions 51 is equal to the number of U-shaped phase shifting circuits in the first phase shifter 2, and each of the first connecting portions 51 is connected to a corresponding U-shaped

phase shifting circuit

21, 22, 23; The second driving medium element 6 includes at least two second connecting portions 61, the number of the second connecting portions 61 being equal to the number of U-shaped phase shifting circuits in the second phase shifter 3, each The second connecting portion 61 is connected to the corresponding U-shaped

phase shifting circuits

31, 32, 33, respectively.

Therefore, by moving the first driving medium element 5 and the second driving medium element 6, each U-shaped phase shifting circuit can be moved along a corresponding fixed circuit, thereby changing the first phase shifter 2 and the second Phase of phase shifter 3.

Specifically, the combiner 4 includes a first frequency band circuit 44 and a second frequency band circuit 45. The first frequency band circuit 44 includes a filter circuit (not shown) capable of filtering the second frequency band, such that the first frequency band circuit 44 passes only the signal having the first frequency band; similarly, the second frequency band circuit 45 includes A filter circuit (not shown) of the first frequency band can be filtered such that the second frequency band circuit 45 passes only the signal having the second frequency band.

Fig. 3 shows another embodiment of the phase shifting device of the present invention. In the phase shifting device 100, each phase shifter includes six U-shaped phase shifting circuits, and each U-shaped phase shifting circuit is respectively connected with a combiner, and at the same time, the first input of the phase shifting device 100 The end 101 is directly connected to one input of the combiner located in the middle, and the second input 102 of the phase shifting device 100 is directly connected to the other input of the combiner. On this basis, it is also possible to provide more combiners and corresponding U-shaped phase shifting circuits on both sides of the combiner in the middle to achieve multi-port output.

Accordingly, the present invention also provides an antenna comprising a plurality of radiating elements and a phase shifting device 100 according to any of the above aspects, wherein an output of the phase shifting device 100 is coupled to the radiating element. Since the output ends of the combiner 4 in the phase shifting device 100 can be used as the output ends of the phase shifting device 100, the output ends of the combiners 4 are respectively connected to different radiation units.

Since the phase shifting device 100 has a small volume and a high degree of integration, the layout of the antenna can be optimized while the radiating unit is frequency-multiplexed, so that the antenna has a small volume.

Correspondingly, the present invention also provides a base station that uses the antenna and thus has the advantages of the antenna, and therefore will not be described again.

The above is only a part of the embodiments of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

A phase shifting device, comprising: two phase shifters and at least one combiner disposed between the two phase shifters;

The combiner includes an output end and two input ends, each of the phase shifters includes at least one output end, and an input end of the combiner is connected to an output end of one of the two phase shifters, The other input of the combiner is connected to the output of the other phase shifter;

The phase shifter includes at least two sequentially connected U-shaped phase shifting circuits, and outputs of one U-shaped phase shifting circuit of any two adjacent U-shaped phase shifting circuits are respectively connected to another U-shaped phase shifting circuit The input end and one input end of the combiner are connected.
The phase shifting device according to claim 1, wherein the two phase shifters and the combiner are disposed on the same PCB board.
The phase shifting device according to claim 3, wherein any two adjacent U-shaped phase shifting circuits are connected by a fixed circuit, and the U-shaped phase shifting circuit is coupled to the fixed circuit, the U-shaped The phase shifting circuit is movably sleeved on the fixed circuit.
The phase shifting device according to claim 3, wherein said fixed circuit comprises a power splitter, said power splitter comprising an input end, a first output end and a second output end, said input end and two phases An output of a U-shaped phase shifting circuit adjacent to the U-shaped phase shifting circuit is connected, and the first output end is adjacent to an input end of another U-shaped phase shifting circuit of the adjacent U-shaped phase shifting circuit Connected, the second output is connected to an input of the combiner.
The phase shifting device according to claim 3, wherein said U-shaped phase shifting circuit and said fixed circuit are insulated from each other.
The phase shifting device according to claim 1, further comprising a driving medium element matched to said phase shifter, said driving medium element comprising at least two connecting portions, each of said connecting portions respectively U-phase shifting circuit connection.
The phase shifting device according to claim 1, wherein the number of combiners is less than or equal to the number of outputs of each of the phase shifters.
The phase shifting device according to claim 1, wherein the combiner comprises a first frequency band circuit and a second frequency band circuit, and the first frequency band circuit comprises a filter circuit capable of filtering the second frequency band, the first The two-band circuit includes a filter circuit capable of filtering the first frequency band.
An antenna comprising a radiating element and the phase shifting device of any of claims 1-8, the output of the combiner being coupled to the radiating element.
A base station comprising the antenna of claim 9.