Swept frequency oscillators having time constant-controlled signal level detector
US4482872A · kind A · utility
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3References
11Claims
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Assignee
Inventor
Key dates
| Filing date | Dec 7, 1981 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Dec 7, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B23/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A swept frequency oscillator is capable of providing an output signal whose frequency can be swept over a very wide range at a rate which is not dictated by the period of the lowest frequency in the range. The signal detector monitors the output level of the oscillator so as to generate a control signal to remove variations in the output power level. At frequencies below a particular value, the time constant of the detector is modified progressively so as to be inversely proportional to the frequency being generated. Thus at low frequencies in the swept range, the time constant of the detector is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.