Frequency modulated radio frequency broadcast network employing a synchronous frequency modulated booster system
US5046124A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Mar 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frequency modulated radio frequency broadcast network in which re-transmitting stations employ a synchronous frequency modulated booster system. Included in the frequency modulated booster system is a synchronous frequency modualted exciter for converting a frequency modulated intermediate frequency into a frequency modulated broadcast signal. The synchronous frequency modulated exicter includes phase locked loop circuits for synchronizing the re-transmitted frequency modulated broadcast signal with the frequency modulated intermediate frequency signal by detecting reference signals in the composite baseband of the intermediate frequency signal and in the composite signal frequency modulated broadcast signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.