Cmos rf switch device and method for biasing the same

A method for controlling amplification radio frequency signals, the method comprising:

• determining whether to amplify a radio frequency (RF) signal by a first gain achievable by a first circuit or a second gain achievable by a second circuit, amplification of the first and second circuits respectively configured to be turned on or off by first and second switches, each of the first and second switches being a triple-well CMOS switch and including an isolated well about a source, a gate, and a drain of the respective switch, the first switch in the on state and the second switch in the off state resulting in the RF signal being amplified by the first gain, and the first switch in the off state and the second switch in the on state resulting in the RF signal being amplified by the second gain;
• applying or inducing application of a first bias voltage to the isolated well of the first switch upon determination that the RF signal is to be amplified by the first gain;
• and
• applying or inducing application of a second bias voltage different than the first bias voltage to the isolated well of the first switch upon determination that the RF signal is to be amplified by the second gain.

A tangible computer-readable medium having stored thereon computer-executable instructions that, if executed by one or more computing devices including computer hardware, cause the one or more computing devices to perform operations comprising:

• determining whether to amplify a radio frequency (RF) signal by a first gain achievable by a first circuit or a second gain achievable by a second circuit, amplification of the first and second circuits respectively configured to be turned on or off by first and second switches, each of the first and second switches being a triple-well CMOS switch and including an isolated well about a source, a gate, and a drain of the respective switch, the first switch in the on state and the second switch in the off state resulting in the RF signal being amplified by the first gain, and the first switch in the off state and the second switch in the on state resulting in the RF signal being amplified by the second gain;
• applying or inducing application of a first bias voltage to the isolated well of the first switch upon determination that the RF signal is to be amplified by the first gain;
• and
• applying or inducing application of a second bias voltage different than the first bias voltage to the isolated well of the first switch upon determination that the RF signal is to be amplified by the second gain.

A system for amplifying radio frequency signals, the system comprising:

• a means for amplifying a radio frequency (RF) signal so as to provide first and second gains;
• a means for switching first and second complementary metal oxide semiconductor (CMOS) switches between first and second states, each of the first and second switches including a source, a drain, a gate between the source and the drain, and a first well formed about the source and the drain;
• and
• a means for controlling application of first and second bias voltages to the first well of the first switch, the first and second bias voltages being different and corresponding to the first and second states of the first switch, respectively, the means for controlling further configured to control application of third and fourth bias voltages to the first well of the second switch, the third and fourth bias voltages being different and corresponding to the first and second states of the second switch, respectively, at least the combination of the first state of the first switch and the second state of the second switch resulting in the RF signal being amplified by the first gain, and at least the combination of the second state of the first switch and the first state of the second switch resulting in the RF signal being amplified by the second gain.