Patent ID: 7715813

Claim:
A receiver, comprising: a tunable low noise amplifier (LNA), for tracking to a local oscillation (LO) signal during a calibration mode, the tunable LNA comprising: a plurality of LNAs for receiving and amplifying a plurality of frequency bands respectively; a plurality of first switches respectively coupled to the output of the plurality of LNAs; a plurality of LC loads, respectively coupled to the plurality of first switches; and a plurality of second switches, respectively coupled to the plurality of LC loads and the LO signal; and a power detecting circuit, coupled to the output of the tunable LNA, for determining a signal power level corresponding to the LO signal; and a controller, coupled to the power detecting circuit, the first switches, the second switches, for controlling the first switches to isolate the output of the plurality of LNAs, and controlling the second switches to selectively couple one of the LC loads to the LO signal during the calibration mode.