Coupling device, cavity filter and communication radio frequency equipment
A technology of coupling device and coupling body, which is applied in the direction of connection devices, waveguide devices, electrical components, etc., can solve the problems of glue safety hazards, falling into the cavity, and inconvenient production, so as to achieve improved safety, high safety, The effect of easy installation
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Embodiment 1
[0021] Example one, as figure 1 As shown, the present invention provides a communication radio frequency device, which can be a cavity filter, a simplexer, a duplexer, a multiplexer, a combiner or a splitter, and the communication radio frequency device includes a signal transmission body 10, a circuit The board 20 and the coupling device 30. The coupling device 30 is mounted on the circuit board 20 and is used for coupling the signal of the coupled signal transmission body 10 to the circuit board 20. The coupling device 30 includes:
[0022] The coupling outer conductor 31 is provided with a through hole, the middle of the through hole is threaded and one end of the through hole is provided with a countersunk hole, while the other end of the through hole is not provided with a thread, and one end of the coupling outer conductor 31 has a countersunk hole and the circuit board 20 is connected, and the circuit board 20 is provided with through holes corresponding to the through ...
Embodiment 2
[0032] In this embodiment, the coupling inner conductor and the elastic fixing block in the coupling outer conductor are arranged in an interference fit close to the end of the printed circuit board, and the coupling inner conductor and the coupling outer conductor are threadedly arranged in an end far away from the printed circuit board.
[0033] Specifically, the through hole in the coupling outer conductor includes a first segment hole close to the printed circuit board end and a second segment hole away from the printed circuit board end, the elastic fixing block is accommodated in the first segment hole, and the coupling inner conductor and the elastic fixing block Interference fit and thread fit with the second hole, the diameter of the first hole is larger than that of the second hole.
[0034] refer to image 3 The coupling body 40 includes a coupling outer conductor 41, a coupling inner conductor 43, and an elastic fixing block 42. The coupling inner conductor in the ...
Embodiment 3
[0042] In this embodiment, the coupling inner conductor and the elastic fixing block in the coupling outer conductor are arranged in an interference fit at the end away from the printed circuit board, and the coupling inner conductor and the coupling outer conductor are threaded and arranged at the end close to the printed circuit board.
[0043] Specifically, refer to Figure 5 , Figure 5 It is a schematic cross-sectional view of the coupling body 60. The through holes in the coupling outer conductor 61 include a first segment hole near the printed circuit board end and a second segment hole away from the printed circuit board end. The elastic fixing block 62 is arranged in the second segment hole, coupling The 632 of the inner conductor 63 close to the end of the printed circuit board is threadedly matched with the first section hole of the coupling outer conductor 61, and is interference fit with the elastic fixing block 62 arranged in the second section hole through 631. ...
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