High-frequency oscillator of frequency switching type and high-frequency oscillation method
US6756863B2 · kind B2 · utility
4Cited by
10References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | May 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6403
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator of frequency switching type according to the present invention is adapted to select and output any of a plurality of high frequencies. The oscillator of frequency switching type includes a plurality of crystal oscillators whose fundamental frequencies are different, and filters a signal output from the operating crystal oscillator with a SAW filter configured by forming a plurality of IDTs, which set passbands of different frequencies, on the same piezoelectric substrate, or with a filter arranged for each frequency of the corresponding crystal oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.