Varactor tunable RF filters having low distortion and high signal level capability
US7646264B2 · kind B2 · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Nov 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An agile frequency converter provides IF-RF level exchange and notch filtering. System noise and spurious levels generated by channel frequency conversion is reduced in applications requiring broadband combining of frequency converters to form multichannel composite signal. A pair of varactor banks is connected in an arrangement whereby varactor pairs are connected in parallel and capacitor pairs are connected in anti-parallel. Tuning is achieved by circuitry for tuning first and second varactors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.