Continuously-synchronized tracking receiver for a priori defined swept carriers
US4152650A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Apr 22, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K1/003
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver for a carrier that is swept in frequency in a predetermined manner over a bandwidth comprises frequency tracking with continuous self-synchronization. The frequency tracking permits the carrier to be filtered by a narrowband filter. The filtered carrier is then fed to a frequency discriminator to produce an error signal. A highly-selective phase-locked loop synchronizes only to the desired component of the error signal in frequency and in phase. The output of the phase-locked loop, after appropriate shaping, is the control signal for tracking synchronously the incoming wave. The output data are obtained at detection after the narrowband filtering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.