Piezoelectric transducer signal processing circuit
US7622845B2 · kind B2 · utility
15Cited by
16References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45528
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piezoelectric detector circuit has at least one input line, a piezoelectric transducer in the input line, an amplifier receiving signals on the input line and generating an output, and one or two feedback elements through which the output is sent back to the input line. The circuit may be a discrete time sampled operational amplifier (DTOA) based transconductance or “voltage output mode” circuit. In one embodiment, protection elements are associated with amplifier input lines to establish a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.