Integrated wideband RF tracking filter for RF front end with parallel band switched tuned amplifiers
US8374566B2 · kind B2 · utility
1Cited by
16References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2008 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Apr 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J5/244
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A wideband RF tracking filter having a set of parallel tuned resonator amplifier stages with a de-Q resistor for each subband is disclosed. The resonant amplifier contains programmable tuned LC tank impedance and an array of parallel voltage to current converters (V2I) for each subband. The de-Q resistor together with the array of V2I converters provides a flat gain over each subband and each of the other subbands covering different frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.