RF Spectrum analyzer
US4253060A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | May 29, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus is provided comprising a laser source, a collimating lens, a focussing lens and a detector array disposed along an optical path. A surface acoustic wave transducer is disposed between the collimating and focussing lenses and is adapted to modulate laser light provided by the laser source as a function of the amplitude and frequency of energy applied to the transducer. In accordance with the invention, a 90.degree. Bragg diffraction grating disposed between the collimating lens and the transducer, is adapted for transmitting light of a predetermined frequency and predetermined polarization along the optical path. A specific embodiment incorporates the components on an integrated circuit chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.