Amplifying surface wave receiver
US4928069A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02976
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifying surface wave receiver for a surface wave element composed of a material which exhibits the piezo effect and which can be rendered electrically conductive by local doping, where a doped region is formed at the upper portion of an insulating substrate body (8) which forms the surface wave element and which is composed of piezo electric material, said doped region forms a conductive channel (7) between at least two contact electrodes which are spaced a defined distance from each other, and the conductive channel (7) formed such that occurring piezo charges are positioned so as to modulate the conductivity of said channel. One terminal of a voltage source (4) is connected to one of the contact electrodes (6) and the other terminal is connected to the other contact electrode (6) through an alternating current detector (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.