一种毫米波双极化探头及天线

Abstract

本实用新型公开了一种毫米波双极化探头及天线，通过设置双极化探头收发分离器、探头波导管、第一同轴极化导体和第二同轴极化导体，双极化探头收发分离器形成的波导口与探头波导管连接，呈正交设置的水平极化口及垂直极化口分别与第一同轴极化导体、第二同轴极化导体连接。即本技术方案可对探测信号进行不同极化方向分离，并将所分离出的第一基模信号、第二基模信号进行独立输出，从而能够同时测量电磁场的水平极化分量与垂直极化分量，提升了近场测量的效率与精度，且还避免了传统探头需要机械旋转测量多个极化方向所带来的复杂操作和误差累积，具有结构紧凑、频带宽、极化隔离好、适于高效测量等优势。

Claims

1. A millimeter wave dual-polarized probe, characterized by, The millimeter-wave dual-polarization probe includes a dual-polarization probe transceiver splitter, a probe waveguide, a first coaxial polarization conductor, and a second coaxial polarization conductor. The dual-polarization probe transceiver splitter has a waveguide port, an orthogonally arranged horizontal polarization port, and a vertical polarization port. One end of the waveguide port is connected to the probe waveguide, and the other end of the waveguide port is connected to the horizontal polarization port and the vertical polarization port, respectively. The horizontal polarization port is connected to a first coaxial polarization conductor, and the vertical polarization port is connected to a second coaxial polarization conductor. The waveguide port is used to receive the detection signal transmitted by the probe waveguide, the horizontal polarization port is used to transmit the first fundamental mode signal separated based on the detection signal to the first coaxial polarization conductor, the vertical polarization port is used to transmit the second fundamental mode signal separated based on the detection signal to the second coaxial polarization conductor, the first coaxial polarization conductor is used to derive the first fundamental mode signal, and the second coaxial polarization conductor is used to derive the second fundamental mode signal.

2. The millimeter wave dual polarized probe of claim 1, wherein, The dual-polarization probe transceiver splitter includes a splitter cavity and a signal propagation channel inside the splitter cavity; The inlet of the signal propagation channel forms the waveguide port on the signal input end face of the separator cavity, the first outlet of the signal propagation channel forms the horizontal polarization port on the first signal output end face of the separator cavity, and the second outlet of the signal propagation channel forms the vertical polarization port on the second signal output end face of the separator cavity. Wherein, the signal input end face is the end face that docks with the probe waveguide, the first signal output end face is the end face that is horizontally opposite to the signal input end face, and the second signal output end face is the end face that is orthogonally opposite to the first signal output end face.

3. The millimeter wave dual polarized probe of claim 2, wherein, The separator cavity is used to separate the detection signal into polarization modes, forming a first fundamental mode signal and a second fundamental mode signal that propagate orthogonally in space.

4. The millimeter wave dual polarized probe of claim 2, wherein, The millimeter-wave dual-polarization probe also includes a flange; The flange is fixed to the signal input end face of the separator cavity. The flange has mounting holes for fixing the test probe so that the probe waveguide can be connected to the waveguide port.

5. The millimeter wave dual polarized probe of claim 4, wherein, The first signal output end face has a first mounting screw hole, which is used to fix it to the first coaxial polarized conductor.

6. The millimeter wave dual polarized probe of claim 5, wherein, The second signal output end face is provided with a second mounting screw hole, which is used to fix the second coaxial polarized conductor.

7. The millimeter wave dual polarized probe of claim 1, wherein, Both the first coaxial polarized conductor and the second coaxial polarized conductor have a built-in coaxial waveguide structure; The first coaxial polarized conductor converts the first fundamental mode signal into a first output signal in coaxial transmission form through the coaxial-to-waveguide structure, and the second coaxial polarized conductor converts the second fundamental mode signal into a second output signal in coaxial transmission form through the coaxial-to-waveguide structure.

8. The millimeter wave dual polarized probe of claim 1, wherein, The detection signals include millimeter-wave detection signals.

9. The millimeter wave dual polarized probe of claim 1, wherein, The millimeter-wave dual-polarization probe operates in the frequency range of 24 GHz to 30 GHz.

10. An antenna, characterized by The antenna body and the millimeter wave dual-polarized probe as claimed in any one of claims 1 to 9 are included. The millimeter wave dual-polarized probe is arranged on the antenna body.

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