Frequency-doubling amplifying surface wave receiver
US4839607A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0022
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifying surface wave receiver for a surface wave element composed of a material which has the piezo effect and which can be rendered electrically conductive by local doping wherein a doped region is formed at the upper portion of an insulating substrate body (8) which forms the surface wave element and said doped region forms a conductive channel (7) between at least two contact electrodes (3, 3') which have a defined distance from each other and in the channel thus formed the occurring piezo charges are positioned so as to modulate the conductivity of the channel. One pole terminal of a voltage source (4) is connected to one of the contact electrodes (3) and the other pole terminal is connected to the other contact electrode (3') through an alternating current detector (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.