FSS-based dual-band cassegrain parabolic antenna for RadarCom applications

Abstract

Radar systems typically have one antenna for each particular radar. This paper presents the design of a Cassegrain parabolic antenna based on a frequency selective surface able to simultaneously operate in two distant frequency ranges, namely S-band and X-band, for dual-use radars. Numerical results, obtained using ANSYS HFSS, demonstrate the proposed antenna provides 30 dBi gain for 2.45 and 9.9 GHz, which are the frequencies of a photonics-based dual-band radar, previously developed by our research group. The new antenna can be efficiently applied for the development of radar/communication (RadarCom) systems that can be interchangeably used as a radar sensor and communications device.