Low-cost receiver using integrated inductors
US9209838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2015 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Feb 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/32
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A receiver includes a first amplifier having an input for receiving an RF signal, and an output for providing an amplified RF signal, a switch section that selectively switches the amplified 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. 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. The first variable capacitor has a capacitance that varies in response to a tuning signal. The inductance leg includes 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.