Broadband high-gain circularly polarized filtering antenna
A filtering antenna and high-gain technology, which is applied in the field of radio frequency communication, can solve the problems of not being able to meet the broadband working environment, improve system insertion loss, increase structural complexity, etc., and achieve directivity and high gain, simple structure, and high roll-off Effect
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[0029] The present invention is further described in detail below in conjunction with embodiments and accompanying drawings, but embodiments of the present invention are not limited thereto.
[0030] as Figure 1 As shown, a broadband high-gain circular polarization filter antenna, comprising a four-layer dielectric plate, the layers are spaced at a certain distance between the layers, from bottom to top including the first layer of the media substrate 1, the second layer of the media substrate 2, the third layer of the media substrate 3 and the fourth layer of the media substrate 4, the first layer of the media substrate surface printing first metal ground 5, the second layer of the media substrate printing gap coupling feeder network, the third layer of the media substrate surface printing radiation structure, the fourth layer of the media substrate of the lower surface printing parasitic structure. The use of the slit coupling feeder network excitates the radiation structure and...
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