Dynamic control of capacitance elements in field effect...

Details Dynamic control of capacitance elements in field effect... Dynamic control of capacitance elements in field effect...

2004-09-21

2009-02-03

Tran, Minh-Loan T (Department: 2826)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S488000, C257SE29317

Reexamination Certificate

active

07485916

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.

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patent: 2002/0043699 (2002-04-01), Akiyama
patent: 2002/0079521 (2002-06-01), Lin

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