High frequency switch module

摘要

The invention relates to a high-frequency switch module for switching a transmission circuit (TX1, TX2) and a reception circuit (RX1, RX2, RX3) in a plurality of different transmitting and receiving systems (GSM, DCS, PCS), comprising first and second filter circuits (F1, F2) having different pass bands; a first switch circuit (SW1) connected to said first filter circuit (F1); and a second switch circuit (SW2) connected to said second filter circuit. The first filter circuit (F1) is a low-pass filter (LPF) comprising a first distributed constant line (LF5) and a first series resonance circuit. The second filter circuit (F2) is a high-pass filter (HPF) comprising a second capacitor (CF5) and a second series resonance circuit.