Wideband MESFET microwave frequency divider
US4327343A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Jun 10, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B19/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency divider is known which uses varactor diodes in a circuit which resonates at f.sub.o /N where N is an even integer. Because of circuit losses within the varactor diodes, amplifiers are generally required to recover the input signal level. For systems that require cascaded frequency dividers at least one amplifier is required for each frequency divider. The present invention overcomes these problems by providing a microwave frequency divider to perform parametric frequency division and amplification simultaneously at microwave frequencies. A signal f.sub.o is applied to an input transmission line which forms, with the inherent frequency dependent non-linear gate-to-source capacitance of at least one MESFET, a circuit resonant at f.sub.o /N, wherein N is an even integer such as 2. The source-drain path of the MESFET is coupled via an output transmission line to a balun transformer having an output to provide amplified signals at f.sub.o /N. The transmission lines may be microstrip, stripline or other suitable type of transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.