Dynamic control of capacitance elements in field effect structures
US7485916B2 · kind B2 · utility
0Cited by
7References
21Claims
0Family size
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Key dates
| Filing date | Sep 21, 2004 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | May 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D1/711
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A field effect device includes at least one segmented field plate, each of the at least one segmented field plates having a plurality of segments that each form a plate of a capacitor, wherein the field effect device is connected to an electronic element that dynamically connects selected segments to selectively set a gate-to-drain and a drain-to-source capacitance. An ultrasonic device includes a transducer coupled to a switching device that switches the transducer between a transmit mode and a receive mode switching device, wherein the switching device includes the field effect device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.