一种新型高增益低雷达散射截面微带天线

doi:10.3969/j.issn.1001-2400.2014.04.027

Abstract

Abstract:

A double screen frequency selective surface(FSS) is designed and applied as the radome of the microstrip antenna. By analyzing the transmission line model and simulating the electric field distribution and current distribution on the double screen frequency selective surface at the resonance frequency, its physical mechanism of wave-transparent is theoretically investigated. The new antenna high-gain and in-band radar cross section(RCS) reduction mechanism is analyzed by the ray theory and phase cancellation principle. Simulation and measurement results demonstrate that: the application of the double screen FSS has hardly influence the bandwidth of the antenna, while the gain of antenna is enhanced by 5.49dB, the half-power beam width of the E-plane and H-plane is reduced 63° and 52°, respectively. The RCS of the antenna is reduced by 5dB or more in an operation band from 2～18GHz, and the in-band RCS reduction of the antenna is above 5dB from -23°～23° and the maximum reduction value exceeds 20.94dB in the boresight direction.

Key words: microstrip antenna, frequency selective surfaces, radar cross section, high-gain

CLC Number:

070208

GAO Jun;YUAN Zidong;CAO Xiangyu;YANG Jiming;LIU Tao;YANG Huanhuan. Novel high gain and low RCS microstrip antenna[J].J4, 2014, 41(4): 158-165.

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Novel high gain and low RCS microstrip antenna

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