Multiband frequency generation using a single PLL-circuit
US6785525B2 · kind B2 · utility
10Cited by
9References
18Claims
0Family size
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Key dates
| Filing date | Nov 29, 2000 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Dec 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/406
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To minimize the overall circuitry necessary in a multiband-frequency generator, output terminals of a voltage-controlled multiband oscillator (22-1, . . . , 22-N) are coupled to a frequency synthesis unit (10) via a frequency selective coupling unit (24). The frequency synthesis unit (10) derives a phase difference between a frequency control input signal and the output signal of the frequency selective coupling unit (24) to control the voltage-controlled multiband oscillator (22-1, . . . , 22-N).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.