Enhanced isolation between donor antenna and coverage antenna for indoor WCDMA repeater systems

This paper presents a structure of the Frequency Selective Surface (FSS) to improve the isolation between donor antenna and coverage antenna for indoor WCDMA repeater systems. The repeater system has two linearly polarized antennas backed with the reflectors. The proposed FSS is embedded into reflectors aligned with the cross-polarization of each antenna. The isolation with the FSS is enhanced overall more than 6 dB at WCDMA band, compared to that without the FSS.