Abstract: A frequency tunable low noise amplifier 100 providing multi-band operation includes an amplifier 110 and a frequency tunable input matching network 130 including at least one varactor 141, 142 coupled to an input of the amplifier 110. The input network receives a signal from a signal source 160. The input matching network 130 includes a control input 171 for providing an impedance match to the source 160. A frequency tunable output matching network 140 includes at least one varactor 181, 182 coupled to an output of the amplifier 110. The output matching network 140 also includes a control input 191 for providing an impedance match to a load 195.

Abstract: A true single-chip radio for bidirectional wireless communications includes a bulk substrate, at least one integrated antenna, at least one transceiver, baseband circuitry and at least one filter all integrally formed in or on the substrate. The radio preferably includes a low-loss dielectric propagating layer disposed beneath the substrate to improve antenna gain. The integrated antenna can be an adaptive array for beamforming.

Abstract: A true single-chip radio for bidirectional wireless communications includes a bulk substrate, at least one integrated antenna, at least one transceiver, baseband circuitry and at least one filter all integrally formed in or on the substrate. The radio preferably includes a low-loss dielectric propagating layer disposed beneath the substrate to improve antenna gain. The integrated antenna can be an adaptive array for beamforming.