Patent ID: 6996376
Filing Date: 2006-02-07
Classification: H04B

Abstract:
1. An antenna switch including: a transmit connection for inputting a radio frequency signal; an antenna connection for connection to an antenna for transmitting the radio frequency signal; and a signal path between the transmit connection and the antenna connection including a plurality of series connected transmit transistors, each transmit transistor having a gate, a drain and a source, the source of one transmit transistor being connected to the drain of a subsequent transmit transistor and the plurality of series connected transmit transistors being controllable to connect selectively the transmit connection to the antenna connection so as to transfer the radio frequency signal from the transmit connection to the antenna connection; wherein the transmit transistors arranged so as to provide a stage of amplification to the radio frequency signal; and the transmit connection is connected to the gate of each transmit transistor such that the radio frequency signal is transferred from the transmit connection to the gate of each transmit transistor.