Patent ID: 8918070

Claim:
An apparatus comprising a receiver, the receiver comprising: a receiver component configured to generate a received signal strength indication (RSSI) of a radio frequency (RF) signal received by the receiver; a control block configured to generate LC circuit frequency tuning data based at least in part on the RSSI; a low-noise amplifier (LNA) comprising an LC circuit having a resonant frequency; a switch configured to selectively enable an input of the LNA to receive a signal from an antenna during a phase of operation in which the LNA receives RF signals from the antenna, and to selectively disable the input of the LNA from receiving the signal from the antenna during a tuning phase of operation; and a switching network configured to adjust the resonant frequency of the LC circuit during the tuning phase of operation based at least in part on the LC circuit frequency tuning data, the switching network comprising: a field effect transistor having a gate configured to receive a gate voltage, a source, and a drain, wherein the gate voltage is configured to turn the field effect transistor on or off, and wherein the switching network is configured to couple a capacitive circuit element across the LC circuit when the field effect transistor is on; a first resistor configured to apply a first bias from a bias voltage to the drain of the field effect transistor; and a second resistor configured to apply a second bias from the bias voltage to the source of the field effect transistor.