Extended phase-range, high fidelity modulator arrangement
US4052672A · kind A · utility
32Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1976 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Jul 22, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C3/0941
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved wideband phase modulator suitable as a simple modulation interface for existing phase modulated transmitters. The disclosed modulator arrangement utilizes a high stability reference oscillator and an associated phase locked loop for optimum long term stability. Means are included for extended phase range and high fidelity of modulation irrespective of loop bandwidth. Both tone and digital modulation is accommodated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.