Time division-synchronous code division multiple access compatible dual mode front end module for use in e.g. mobile telephone, has power supply line applying constant voltage at transmitter/receiver selector switch

摘要

The module (1) has switch control circuits (3, 4, 5, 10) provided corresponding used frequency bands and connected with a high frequency band selector switch. Time division synchronous code division multiple access (TD SCDMA) transmitter/receiver selector switch (11) is connected with a TD SCDMA system terminal. A power supply line (28) is connected between a constant voltage power supply (6) and the high frequency band selector switch, where the power supply line applies constant voltage at the transmitter/receiver selector switch. An independent claim is also included for a mobile communication terminal with an antenna and dual mode front end module.