Patent ID: 8401496

Claim:
A semiconductor antenna switch comprising a transmission terminal, an antenna terminal, and a reception terminal, and further comprising: (a) a plurality of first field effect transistors coupled in series between the antenna terminal and transmission terminal; (b) a plurality of second field effect transistors coupled in series between the antenna terminal and the reception terminal, a first of the second field effect transistors being closest to the antenna terminal and a last of the second field effect transistors being closest to the reception terminal; (c) a plurality of third field effect transistors coupled in series between the transmission terminal and a common terminal, a first of the third effect transistors being closest to the transmission terminal and a last of the third field effect transistors being closest to the common terminal; and (d) a fourth field effect transistor coupled between the reception terminal and the common terminal, wherein: each of the third field effect transistors has a gate electrode, a source region, a drain region, and a first off capacitance indicative of a capacitance between the source and drain regions when said each of the third field effect transistors is OFF; and the first off capacitance of at least the first of the third field effect transistors is larger than the first off capacitance of the last of the third field effect transistors.