Duplexer consists of a transmitting BPF and a receiving BPF with the isolation
of 95~110§¼.
This makes it possible to receive and transmit using only one antenna without
any mutual interference.
The transmitting Filter should have low insertion loss and the receiving filter
must be designed for high attenuation characteristics.
The Duplexer con be used for base station and repeater systems of CDMA, PCS.