Signal processing circuitry
US4352029A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1979 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Dec 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C1/58
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Signal processing circuitry, preferably for use in multiplying two input signals, one at RF frequency and one at base-band frequency, which includes a pair of PIN diodes connected in a generally symmetrical circuit configuration using a single bias supply and including a trimming resistor for controlling the current through a selected one of the diodes so that the characteristics of both diodes can be matched over substantially the complete range of control current values therefor. Further, the circuit configuration permits the use of an easy and effective technique for compensating for temperature changes of the circuit during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.