Spiral inductor with electrically controllable resistivity...

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Passive components in ics

Reexamination Certificate

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Details

C257S528000, C257SE21022, C438S238000, C336S200000

Reexamination Certificate

active

10851021

ABSTRACT:
A microelectronic device including, in one embodiment, a plurality of active devices located at least partially in a substrate, at least one dielectric layer located over the plurality of active devices, and an inductor located over the dielectric layer. At least one of the plurality of active devices is located within a columnar region having a cross-sectional shape substantially conforming to a perimeter of the inductor. The at least one of the plurality of active devices may be biased based on a desired Q factor of the inductor or and/or an operating frequency of the microelectronic device.

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Yong-Ho Cho, A Novel Active Inductor and Its Application to Inductance-Controlled Oscillator, IEEE Transactions on Microwave Theory and Techniques, Aug. 1997, pp. 1208-1213, vol. 45, No. 8, 0018-9480/97.
Stepan Lucyszyn, “Monolithic Narrow-Band Filter Using Ultrahigh-Q Tunable Active Inductors”, IEEE Transactions on Microwave Theory and Techniques, Dec. 1994, pp. 2617-2622, vol. 42, No. 12, 0018-9480/94.

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