MIS transistor varactor device and oscillator using same

Details MIS transistor varactor device and oscillator using same MIS transistor varactor device and oscillator using same

1998-09-09

2000-08-08

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

257312, 257598, 257601, 331177V, 438379, H01L 2993, H01L 2994, H03B 512

Patent

active

061007706

ABSTRACT:
An electrical device having a voltage dependent capacitance is provided comprising a first region of a semiconductor material, and a second region and a third region of a semiconductor material formed in the first region, the second and third regions being separated by a separation region, and an electrically insulating layer formed on the first region at least at a region corresponding to the separation region, and a substantially conductive element formed on the insulating layer at least at a region corresponding to the separation region such that the insulating layer electrically insulates the substantially conductive element from the first, second and third regions, and a first electrode connected to the substantially conductive element, and a second electrode and third electrode are connected to the second and third regions. A method of manufacturing the device is also disclosed.

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