BICMOS monolithic microwave oscillator using negative resistance cell
US5578970A · kind A · utility
9Cited by
6References
4Claims
0Family size
Inventors
Key dates
| Filing date | Mar 19, 1993 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Mar 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B7/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A monolithic microwave oscillator using a negative resistance cell includes a resonator, a negative resistance cell that employs an active device, an output buffer for voltage and current amplification, and a field effect transistor. The negative resistance cell includes a bipolar junction transistor as its active device, with the output buffer circuit coupled to a base of the BJT through the field effect transistor. The combination of the resonator and the negative resistance cell produce a periodic RF microwave signal that is sampled, amplified and buffered by the buffer circuit without degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.