Switching device for multi-polarized antenna test

Abstract

The utility model discloses a switching device for testing a multi-polarized antenna. The switching device comprises a signal splitter / combiner, a signal switching matrix and a 90-degree phase difference orthogonal dual-polarized antenna, the signal splitter / combiner comprises a first signal end, a second signal end and a third signal end; the signal switching matrix comprises a first signal channel, a second signal channel, a first switch arranged on the first signal channel and a second switch arranged on the second signal channel; the 90-degree phase difference orthogonal dual-polarized antenna comprises a horizontal polarization signal end and a vertical polarization signal end; two ends of the first signal channel are respectively connected with the second signal end and the horizontal polarization signal end, and two ends of the second signal channel are respectively connected with the third signal end and the vertical polarization signal end. According to the utility model, the multi-polarization test of the antenna can be realized without a rotary table, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment signal testing, in particular to a switching device for multi-polarization antenna testing. Background Art

[0002] In existing signal testing technology, in order to test the performance differences of the device under test under different polarizations at the same antenna angle in a test environment, it is generally necessary to use multiple polarization antennas in conjunction with a 3D turntable to achieve this. In other words, different antennas need to be switched multiple times at the same angle, and the turntable needs to be rotated to meet the test requirements. The operation is cumbersome and the test efficiency is low.

[0003] Therefore, the existing technology needs to be improved. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a switching device for multi-polarization antenna testing, aiming to enable multi-polarization testing of antennas without a turntable, thereby improving testing efficiency.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A switching device for multi-polarization antenna testing, comprising a signal splitter / combiner, a signal switching matrix, and a 90-degree phase difference orthogonal dual-polarization antenna;

[0007] The signal splitter / combiner includes a first signal terminal, a second signal terminal and a third signal terminal;

[0008] The signal switching matrix includes a first signal channel, a second signal channel, a first switch provided on the first signal channel, and a second switch provided on the second signal channel;

[0009] The 90-degree phase difference orthogonal dual-polarization antenna includes a horizontal polarization signal end and a vertical polarization signal end;

[0010] Two ends of the first signal channel are connected to the second signal end and the horizontal polarization signal end respectively, and two ends of the second signal channel are connected to the third signal end and the vertical polarization signal end respectively.

[0011] In some examples, the combination of the first switch and the second switch controls the signal switching matrix to have four states, including:

[0012] The first signal channel is connected, and the second signal channel is connected;

[0013] The first signal channel is connected and the second signal channel is disconnected;

[0014] The first signal channel is disconnected and the second signal channel is connected;

[0015] The first signal channel is disconnected, and the second signal channel is disconnected.

[0016] In some examples, the signal switching matrix is provided with an A1 signal terminal and an A2 signal terminal at both ends of the first signal channel, and is provided with a B1 signal terminal and a B2 signal terminal at both ends of the second signal channel;

[0017] The A1 signal terminal is connected to the second signal terminal, and the A2 signal terminal is connected to the horizontal polarization signal terminal;

[0018] The B1 signal terminal is connected to the third signal terminal, and the B2 signal terminal is connected to the vertically polarized signal terminal.

[0019] In some examples, the signal splitter / combiner is a power divider.

[0020] In some examples, the signal splitter / combiner is a coupler.

[0021] In some examples, the 90-degree phase difference orthogonal dual-polarization antenna is provided with a phase shift circuit to achieve a 90-degree phase difference signal output.

[0022] In some examples, in the signal splitter / combiner, a signal is input from the first signal terminal and then output from the second signal terminal and the third signal terminal, or a signal is input from the second signal terminal and the third signal terminal and then output from the first signal terminal.

[0023] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as the implementation methods) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be listed here one by one.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This device does not require a turntable for rotation operation, and can directly switch multiple polarizations for testing at the same antenna angle, reducing the complexity of the equipment test system and greatly improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1This is a schematic diagram of the composition of the first embodiment of the switching device for multi-polarization antenna testing of the present invention.

[0028] Reference numerals:

[0029] 100-device, 10-signal splitter / combiner, 11-first signal terminal, 12-second signal terminal, 13-third signal terminal, 20-signal switching matrix, 21-first signal channel, 22-second signal channel, 23-first switch, 24-second switch, 30-antenna, 31-horizontally polarized signal terminal, 32-vertically polarized signal terminal. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In addition, in this utility model, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0034] The present utility model includes the following embodiments.

[0035] like Figure 1As shown, the present invention provides a switching device 100 for multi-polarization antenna testing, comprising a signal splitter / combiner 10, a signal switching matrix 20, and a 90-degree phase difference orthogonal dual-polarization antenna 30;

[0036] The signal splitter / combiner 10 includes a first signal terminal 11, a second signal terminal 12, and a third signal terminal 13. The signal splitter / combiner 10 can split one signal into two outputs, or combine two signals into one output.

[0037] Specifically, in the signal splitter / combiner 10 of this embodiment, a signal is input from the first signal terminal 11 and then output from the second signal terminal 12 and the third signal terminal 13 , or a signal is input from the second signal terminal 12 and the third signal terminal 13 and then output from the first signal terminal 11 .

[0038] Preferably, as an embodiment, the signal splitter / combiner 10 of the present invention is a power splitter. The power splitter can split and combine signals.

[0039] As another embodiment, the signal splitter / combiner 10 of the present invention may also be a coupler.

[0040] The signal switching matrix 20 of the present invention includes a first signal channel 21, a second signal channel 22, a first switch 23 provided on the first signal channel 21, and a second switch 24 provided on the second signal channel 22. The first switch 23 controls the on / off of the first signal channel 21, and the second switch 24 controls the on / off of the second signal channel 22. The on / off control of the first and second switches 23, 24 can be automatically controlled by a control program or manually controlled. The first and second switches 23, 24 of the present invention are radio frequency switches.

[0041] Specifically, the first switch 23 and the second switch 24 of the embodiment of the present invention control the signal switching matrix 20 to have four states, including:

[0042] The first signal channel 21 is connected, and the second signal channel 22 is connected; the first signal channel 21 is connected, and the second signal channel 22 is disconnected; the first signal channel 21 is disconnected, and the second signal channel 22 is connected; the first signal channel 21 is disconnected, and the second signal channel 22 is disconnected. In this way, the signal switching matrix 20 of this embodiment can output only one signal, output both signals simultaneously, or output neither signal, for two signals input into the signal switching matrix 20, to meet different testing requirements.

[0043] like Figure 1As shown, the 90-degree phase difference orthogonal dual-polarization antenna 30 of the present invention includes a horizontally polarized signal terminal 31 and a vertically polarized signal terminal 32. When the horizontally polarized signal terminal 31 of the 90-degree phase difference orthogonal dual-polarization antenna 30 receives a signal, it outputs a horizontally polarized signal; when the vertically polarized signal terminal 32 of the 90-degree phase difference orthogonal dual-polarization antenna 30 receives a signal, it outputs a vertically polarized signal; when both the horizontally polarized signal terminal 31 and the vertically polarized signal terminal 32 of the 90-degree phase difference orthogonal dual-polarization antenna 30 receive signals, they output circularly polarized signals with a mutually perpendicular 90-degree phase difference.

[0044] Preferably, in this embodiment, the 90-degree phase difference orthogonal dual-polarization antenna 20 is provided with a phase shift circuit to achieve 90-degree phase difference signal output, and the phase shift circuit includes a phase shifter, a bridge, and the like.

[0045] In other embodiments, the antenna 30 may output a 90-degree phase difference signal through antenna design, such as adjusting the antenna size or the feed point position to adjust the wavelength and phase of the signal.

[0046] The two ends of the first signal channel 21 of the switching device 100 of the present invention are respectively connected to the second signal terminal 12 and the horizontally polarized signal terminal 31, while the two ends of the second signal channel 22 are respectively connected to the third signal terminal 13 and the vertically polarized signal terminal 32. Specifically, after the signal is input from the signal splitter / combiner 10, it is split into two paths. After being controlled on and off by the signal switching matrix 20, the signals with different polarizations are transmitted from the 90-degree phase-shifted orthogonal dual-polarized antenna 30. Of course, the signal can also be transmitted in the opposite direction from the 90-degree phase-shifted orthogonal dual-polarized antenna 30 to the signal splitter / combiner 10.

[0047] In this embodiment, the signal splitter / combiner 10 splits the input antenna signal into two signals when the 90-degree phase difference orthogonal dual-polarization antenna 30 serves as a transmitting antenna, and combines the two polarization signals into one signal when the 90-degree phase difference orthogonal dual-polarization antenna 30 serves as a receiving antenna.

[0048] Specifically, if Figure 1 As shown, the signal switching matrix 20 is provided with an A1 signal terminal and an A2 signal terminal at both ends of the first signal channel 21, and a B1 signal terminal and a B2 signal terminal at both ends of the second signal channel 22. The A1 signal terminal is connected to the second signal terminal 12, and the A2 signal terminal is connected to the horizontal polarization signal terminal 31. The B1 signal terminal is connected to the third signal terminal 13, and the B2 signal terminal is connected to the vertical polarization signal terminal 32. By controlling the first switch 23 and the second switch 24, when A1 and A2 are connected or disconnected, B1 and B2 are also connected or disconnected.

[0049] The switching device 100 for testing a multi-polarized antenna of the present invention is connected to a test system for testing electronic equipment. When the antenna 30 in the switching device 100 of the present invention serves as a transmitting antenna, the operating principle of the switching device 100 of the present invention is as follows:

[0050] 1. A signal is input from the first signal terminal 11 of the signal splitter / combiner 10 , and then processed by the signal splitter / combiner 10 and split into two paths and output from the second signal terminal 12 and the third signal terminal 13 respectively.

[0051] 2. The signal output from the second signal terminal 12 enters the A1 signal terminal of the signal switching matrix 20 , and the signal output from the second signal terminal 13 enters the B1 signal terminal of the signal switching matrix 20 .

[0052] 3. The signal switching matrix 20 controls the on and off of the first switch 23 and the second switch 24 according to the test requirements, so that the first signal channel 21 (i.e., A1-A2) and the second signal channel 22 (i.e., A1-A2) in the signal switching matrix 20 are turned on and off, so that only one signal or two signals enter the 90-degree phase difference orthogonal dual-polarization antenna 30, thereby realizing switching between horizontal polarization test, vertical polarization test, and circular polarization test.

[0053] 4. Specifically, Figure 1 As shown in:

[0054] When A1-A2 and B1-B2 are connected, this device supports circular polarization testing;

[0055] When A1-A2 is on and B1-B2 is off, horizontal polarization testing (i.e. X polarization mode) is supported.

[0056] When A1-A2 is disconnected and B1-B2 is connected, vertical polarization testing (i.e., Y polarization) is supported.

[0057] When the antenna 30 in the switching device 100 for multi-polarization antenna testing of the present invention serves as a receiving antenna, the above signal transmission directions are opposite.

[0058] The switching device 100 for multi-polarized antenna testing in this embodiment, through the combination of a signal splitter / combiner 10, a signal switching matrix 20, and a 90-degree phase difference orthogonal dual-polarized antenna 30, does not require rotation of a turntable. It only needs to control the on / off combination of a first switch 23 and a second switch 24 in the signal switching matrix 20 to implement switching tests between horizontal polarization tests, vertical polarization tests, and circular polarization tests at the same antenna angle. This simplifies the test system of the entire device and improves the test efficiency during the device wireless performance test.

[0059] The above description is merely an example to clearly illustrate the present invention and does not limit the patent scope of the present invention. It is impossible to list all implementation methods here. All equivalent structural transformations made by utilizing the contents of the technical solution of the present invention under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A switching device for multi-polarization antenna testing, characterized in that: Including signal splitter / combiner, signal switching matrix, 90-degree phase difference orthogonal dual-polarization antenna; The signal splitter / combiner includes a first signal terminal, a second signal terminal and a third signal terminal; The signal switching matrix includes a first signal channel, a second signal channel, a first switch provided on the first signal channel, and a second switch provided on the second signal channel; The 90-degree phase difference orthogonal dual-polarization antenna includes a horizontal polarization signal end and a vertical polarization signal end; Two ends of the first signal channel are connected to the second signal end and the horizontal polarization signal end respectively, and two ends of the second signal channel are connected to the third signal end and the vertical polarization signal end respectively.

2. The switching device for multi-polarization antenna testing according to claim 1, characterized in that: The combination of the first switch and the second switch controls the signal switching matrix to have four states, including: The first signal channel is connected, and the second signal channel is connected; The first signal channel is connected and the second signal channel is disconnected; The first signal channel is disconnected and the second signal channel is connected; The first signal channel is disconnected, and the second signal channel is disconnected.

3. The switching device for multi-polarization antenna testing according to claim 1, wherein: The signal switching matrix is provided with an A1 signal terminal and an A2 signal terminal at both ends of the first signal channel, and is provided with a B1 signal terminal and a B2 signal terminal at both ends of the second signal channel; The A1 signal terminal is connected to the second signal terminal, and the A2 signal terminal is connected to the horizontal polarization signal terminal; The B1 signal terminal is connected to the third signal terminal, and the B2 signal terminal is connected to the vertically polarized signal terminal.

4. The switching device for multi-polarization antenna testing according to claim 1, wherein: The signal splitter / combiner is a power distributor.

5. The switching device for multi-polarization antenna testing according to claim 1, characterized in that: The signal splitter / combiner is a coupler.

6. The switching device for multi-polarization antenna testing according to claim 1, characterized in that: The 90-degree phase difference orthogonal dual-polarization antenna is provided with a phase shift circuit to achieve 90-degree phase difference signal output.

7. The switching device for multi-polarization antenna testing according to claim 1, characterized in that: In the signal splitter / combiner, a signal is input from the first signal terminal and then output from the second signal terminal and the third signal terminal, or a signal is input from the second signal terminal and the third signal terminal and then output from the first signal terminal.

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