A 34 dBm IP0.1dB SOI SP3T switch with an integrated negative-bias switch controller at 2.4 GHz

In this paper, a single pole triple through (SP3T) T/R switch with high input P_0.1dB performance and low insertion loss is reported. The switch is designed using a 0.32 μm SOI process for 2.4 GHz operating frequencies. To increase the power capability, 10-stacked MOSFETs are used for the switching device. And the body floating techniques are also employed. The negative biasing controller for enhancing P_1dB is proposed to control the switching power cell on a single die with the switch power cell. The implemented T/R switch exhibits P_0.1dB of 34 dBm at 2.4 GHz from 3 V supply voltage. The insertion losses of the switch are 0.5 dB at 2.4 GHz. The isolations are more than 25 dB at 2.4 GHz.