Variable capacitor

Details Variable capacitor Variable capacitor

1981-12-16

1984-05-15

Edlow, Martin H.

357 51, 357 15, 357 90, 357 23, H01L 2992

Patent

active

044491417

ABSTRACT:
A variable capacitor comprises a plurality of variable capacity elements each having depletion layer control section and a capacity reading section both formed on a semiconductor substrate so that the capacity appearing at each capacity reading section varies in accordance with the bias voltage applied to the depletion layer control sections. Portions of the semiconductor substrate where the capacity reading sections are formed have different carrier concentrations, respectively, so that the capacity read out at the capacity reading section also varies in accordance with the carrier concentration.

REFERENCES:
patent: 3679948 (1972-07-01), Wenzig
patent: 3953264 (1976-04-01), Wu
patent: 3969750 (1976-07-01), Dhaka et al.

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