Isolation characteristics between transmitter and receiver ports for SAW antenna duplexer modules are studied in this paper. Two techniques for high isolation are presented. Optimized phase shifter conditions for SAW antenna duplexer modules at not 50 ohm cases have been analytically provided to achieve desired isolation performances. And switching circuit is proposed for high isolation characteristics. In order to confirm the prediction, obtained optimum phase condition and proposed circuit are applied to EGSM/DCS/PCS triple band SAW antenna duplexer modules.
|Number of pages||4|
|Journal||Proceedings of the IEEE Ultrasonics Symposium|
|Publication status||Published - 2002 Dec 1|
|Event||2002 IEEE Ultrasonics Symposium - Munich, Germany|
Duration: 2002 Oct 8 → 2002 Oct 11
ASJC Scopus subject areas
- Acoustics and Ultrasonics