Low frequency octave wide wave beam compact range feed source based on medium loading
A technology of compact field feed and medium loading, which is applied in the direction of independent antenna unit combination, radiating element structure, antenna grounding switch structure connection, etc., can solve the problems of not being able to compress the field feed, and achieve improved test efficiency and light weight , low-cost effect
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[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] According to the present invention, the four-ridge horn antenna has good impedance bandwidth, better beam width, through the mouth size of the ridge waveguide horn, axial length, ridge waveguide thickness, ridge distance, ridge curve, ridge waveguide size, ridge and rear The design of key dimensions such as cavity distance enables the designed ridge waveguide horn to obtain the widest possible impedance bandwidth under two vertical polarizations, and then introduces PTFE loading. After adding polytetrafluoroethylene, the low-frequency cutoff frequency of the ridge waveguide horn is further reduced. By rationally designing the insertion position of polytetrafluoroethylene, the high-frequency radiation electric field can be concentrated on the dielectric structure without excessively deteriorating the impedance characteristics of ...
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