Based on the basic principles of frequency-selective rasorber(FSR)and Fabry-Perot(F-P)resonator,this paper proposes an antenna with gain enhancement effect and low radar cross sec-tion(RCS).Firstly,a wideband dielectric resonant antenna(DRA)is designed as the feed source of the F-P resonator through the mode superposition of the two-layer dielectric resonator.Then,based on the equivalent circuit model(ECM),an X-band translucent is designed,the FSR of S-band and Ku-band absorbing is used as a partial reflective surface of the F-P resonator.Finally,the reflection characteristics of the FSR are used to form a quasi-Fabry-Perot resonator between the FSR and the ground of the DRA.The simulation and measurement results show that the antenna has the per-formance of in-band gain enhancement and out-of-band low RCS.
维普
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