MULTIBAND ANTENNA SWITCH

摘要

The invention relates to a multiband antenna switch, and more particularly an antenna switch implemented in the radio interface of a mobile telephone device. The antenna switch comprises a power amplifier module with an antenna port (1) connectable to an antenna, and at least one input port connectable to a transmitter section of a transceiver (5); a front end module connectable to the antenna port and a reception section of a transceiver; wherein said power amplifier module and said front end module are capable of covering a number of frequency bands. The transmission/reception duplexing function is obtained by means of a circulator (6, 7) or a power splitter arrangement. The antenna switch offers a packed solution for using four GSM and eight WCDMA bands in the same phone.