HIGH-PASS FILTER, MULTI-BAND ANTENNA SWITCH CIRCUIT USING THE SAME, MULTI-BAND ANTENNA SWITCH LAMINATION MODULE, AND COMMUNICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electrostatic surge measure circuit for protecting a high frequency component such as high frequency switch or SAW filter from electrostatic surge, and an antenna switch module in which measures are taken to cope with the electrostatic surge. SOLUTION: The high-pass filter has a serial resonance circuit composed of an inductor L1 connected between an input terminal P1 and the ground, a capacitor C1 connected between the input terminal P1 and an output terminal P2, an inductor L2 connected to the output terminal P2 and a capacitor C2 connected between the inductor L2 and the ground. Besides, in the multi-band antenna switch circuit and the multi-band antenna switch lamination module, such a high-pass filter to cope with the electrostatic surge is incorporated. COPYRIGHT: (C)2003,JPO