Patent ID: 9197186
Filing Date: 2015-11-24
Classification: H03H

Abstract:
1. A duplexer, comprising: an antenna port for receiving an RF input signal, a transmitting port, a first receiving port and a second receiving port; a hybrid; a transmitting filter in a transmission signal path between the hybrid and the transmitting port; and a first receiving filter in a first reception signal path between the hybrid and the first receiving port, a second receiving filter in a second receiving path between the hydrid and the second receiving port, wherein a matching element is interconnected between the transmitting port and the hybrid or between the receiving ports and the hybrid; wherein the hybrid comprises a first, second, third and fourth port, wherein the third port is interconnected with the antenna port, wherein the second port and the fourth port are interconnected with the receiving ports, and wherein the first port is an input port which is interconnected with the transmitting port and a phase difference between output signals of the second and fourth ports is approximately 180°.