Oscillator utilizing inductive parameter of transistor
US4507622A · kind A · utility
3Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Nov 29, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2201/0208
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator having sufficient accuracy and precision for use in aircraft microwave-landing systems is constructed without the use of an external inductor. A resonant tank circuit comprising both capacitance and inductance is attained by the use of inductance found internally in the base-emitter junction of a transistor suitably biased for operation at the frequencies of a microwave landing system. A transistor having greater-than-unity gain in the oscillation-frequency range is selected for which the angle of the reflection coefficient of the base-emitter junction is positive in the oscillation-frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.