A Dual-Band Polarization Converter With Independent Frequency Response Control Using Back-Loaded Radio Frequency Circuits

A dual-band reflection-type linear cross-polarization converter (PC) is proposed using the antenna array back loaded with radio frequency circuit scheme. The antenna array is used to receive the linear polarization incident waves and to radiate the cross-linear polarization waves. The back-loaded radio frequency circuit (BLRFC) is a filter. It is used to manipulate the polarization conversion and the frequency response in the circuit level independently. The proposed PC has two operation bands from 6.5 to 9.9 GHz and 15 to 19 GHz, with a fractional bandwidth of 41.5% and 23.5%, respectively. Moreover, the high-efficiency polarization conversion ratio and good oblique incident angle stability are also obtained. The measured results, which are consistent with the simulation, indicate that the BLRFC scheme can be used as an alternative to the existing design schemes for PCs.