Signal modulator apparatus
US3970968A · kind A · utility
3Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jan 30, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C1/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Signal modulation apparatus includes a PIN diode network which is fed a carrier signal from a carrier signal source and a modulation signal from modulating current output terminal which receives a modulation current directly from a temperature-compensated constant-current amplifier and a signal via a unity gain amplifier from a reference diode which is also fed from the constant-current amplifier which is adapted to receive a modulating signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.