RF antenna switch and method of operating the antenna switch

Abstract

An RF antenna switch and a method for operating the antenna switch are disclosed. In an embodiment the antenna switch includes an antenna terminal and a switch including a number of n I/O terminals and n−x transceiver units, wherein each transceiver unit is configured to operate in a frequency band of a respective communication system, and wherein n and x are integers and n, x≧1 and n>x. The switch is further adapted to independently connect a plurality of the I/O terminals to the antenna terminal to provide a respective signal paths from the antenna terminal to the I/O terminals, wherein a first filter is connected between a first I/O terminal and a common input node of a first transceiver unit, the first filter being adapted to filter out an unwanted harmonic mode produced by a transmitter of the first transceiver unit.

Dependencies are inferred from the claim text.