Pyramid horn filtering antenna based on waveguide structure
A filter antenna and waveguide structure technology, which is applied in the direction of waveguide horn, antenna, antenna grounding switch structure connection, etc., can solve the problem that waveguide horn antenna is difficult to have filtering characteristics, low sidelobe level, and small sidelobe level at the same time. Achieve the effect of simple and reliable structure, low cross polarization and reduced side lobe
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[0031] The cross-sectional view of the waveguide filter antenna structure of the present invention is as follows image 3 As shown, the structure is symmetrical. The waveguide-based pyramid horn filter antenna includes: a metal waveguide cavity 1 and a pyramid horn 12 .
[0032] The pyramid horn 12 opens along the E plane and the H plane at the same time, and is mainly used to improve the radiation gain and directivity of the antenna and reduce the sidelobe level.
[0033] The metal waveguide cavity 1 is rectangular.
[0034] One end of the metal waveguide cavity 1 is used as a signal input port 13 , and the other end is connected to the pyramid horn 12 as a radiation port.
[0035] The metal waveguide cavity 1 is sequentially composed of the first inductance diaphragm 2 and the second inductance diaphragm 3, the third inductance diaphragm 4 and the fifth inductance diaphragm 5, the fifth inductance diaphragm 6 and the sixth inductance diaphragm 7, The seventh inductive dia...
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