Low passive intermodulation feed source duplexer, and receiving and emitting method thereof
A duplexer and feed technology, applied in the field of microwave filters and antennas, to achieve the effects of reducing PIM, reducing the use of cables and connectors, and reducing nonlinearity
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[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0038] Such as figure 1 As shown, the low passive intermodulation feed duplexer of the present invention includes: a duplexer cavity (1), a spiral feed cup (2), a public resonant rod (3), a spiral antenna feed (4) , duplexer cover (5) and antenna dielectric support (6);
[0039] The signal is fed into the helical feed composed of the helical feed cup (2) and the helical antenna feed (4) supported by the antenna dielectric support (6) to realize signal reception and transmission;
[0040] Such as figure 2As shown, the diplexer cavity (1) is equipped with a transmitting channel and a receiving channel to filter the signal, wherein the transmitting channel is a fourth-order generalized Chebyshev filter with a zero point, and the receiving channel is a fifth-order generalized Chebyshev filter The coupling matrix of the filter is the s...
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