Patent ID: 8705412
Filing Date: 2014-04-22
Classification: H04B

Abstract:
1. An apparatus for protecting receive circuits in a Time Division Duplexing (TDD) wireless communication system, the apparatus comprising: a TDD controller for controlling transmission and reception modes according to transmission and reception intervals; a transmitter for power-amplifying and outputting a Radio Frequency (RF) signal in the transmission mode under control of the TDD controller; and a Transmit/Receive Antenna Switch (TRAS) for, in the transmission mode, forwarding a signal of the transmitter to an antenna feed line under the control of the TDD controller and for absorbing an output signal of the transmitter flowing to the receive circuits using a pass and reflection block positioned in a reception path, and, in the reception mode, for forwarding a signal fed from the antenna feed line to the receive circuits under the control of the TDD controller, wherein the pass and reflection block comprises: