High frequency switch, radio communication apparatus, and high frequency switching method

摘要

For example, in a conventional high frequency switch used for a mobile phone and so on, high frequency distortion is caused by a diode which is turned off upon transmission. A high frequency switch includes a switch circuit 2 for switching transmission and reception performed via a transmitting terminal Tx2 and receiving terminals Rx2 and Rx3, said switch circuit having a diode D1 turned off upon transmission, and a low-pass filter 11 for suppressing high frequency distortion caused by the diode D1 upon transmission.