Patent ID: 8818309
Filing Date: 2014-08-26
Classification: H03J,H04B

Abstract:
1. An apparatus comprising: a radio tuner formed on a single semiconductor die adapted in an integrated circuit (IC), the radio tuner having a single radio frequency (RF) front end including a single low noise amplifier (LNA) coupled to a first pin of the IC to receive and process RF signals of a first frequency band and a second frequency band via a single signal path, the single RF front end including a varactor to provide a selected capacitance level to resonate with an inductance including a first inductor and a second inductor coupled to the IC, a resonant tank formed of the first and second inductors and the varactor, wherein the resonant tank is coupled between the single signal path and a reference potential node, the radio tuner further including a controller to cause the inductance to be of a first level or a second level based on whether the RF signal is of the first frequency band or the second frequency band, and to cause selective coupling of the second inductor to be included in the resonant tank via control of a switch of the IC, wherein when enabled, the switch is to couple the second inductor to the reference potential node.