Mechanism for extending instantaneous RF frequency coverage for an acousto-optic coherent channel receiver (AOCCR) via bandwidth dilation
US5923460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1998 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | May 19, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/33
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to increase the available signal processing bandwidth of an acousto-optic coherent channelizer, the optical beam spot-shaping and projection components of the channelizer are configured to project M reference beam spots upon each photodetector of the channelizer's photodetector array. The parameters of the reference Bragg cell, reference signal R(t), and Fourier optics components are such that they project M reference beam spots upon each photodetector of the channelizer's photodetector array, where M is the desired system bandwidth multiplication factor. No change to the configuration of the photodetector array or its associated post-detection signal processing electronics is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.