Patent ID: 9479199
Filing Date: 2016-10-25
CPC Classification: H03F,H03H,H03J,H04B

Claim Text:
1. A receiver comprising: a first amplifier having an input for receiving a radio frequency (RF) signal, and an output for providing an amplified RF signal; a switch section for selectively switching the RF signal onto a selected one of a plurality of nodes; and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes, wherein a first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal, wherein the first variable capacitor has a capacitance that varies in response to a tuning signal, and the inductance leg comprises a first inductor in series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter.