High-frequency oscillator with power amplifier and automatic power control
US4577165A · kind A · utility
16Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1984 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Feb 16, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0098
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high-frequency oscillator including an oscillation circuit (1) having a quartz crystal (X) and an amplifying element (Q.sub.2), a power amplifying circuit (3) for amplifying the output of the oscillation circuit, and a control system (Q.sub.7, 6) for varying a bias voltage of the amplifying element to thereby control the output power of the power amplification circuit. The control system comprises an FET (Q.sub.7) connected at the drain thereof to the amplifying element, and a control circuit (6) for applying a control signal to the gate of the FET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.