Signal processing device for use on radio links
US4457020A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1982 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Dec 27, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/64
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal processor processes communication signals for a communication link by extracting amplitude information from the signal and converting this amplitude information into two signal tones. The frequency information of the communication system is transmitted as a constant amplitude signal with two narrowband FM control channels. Each control channel is used to transmit one of the two tones. After the communication signal is received, the two tones are removed from the narrowband FM control channels and are used to generate control signals that will control a variable gain amplifier and transfer the amplitude information back to the constant amplitude signal thereby facilitating the reception of the communication system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.