High-frequency active inductor

Details High-frequency active inductor High-frequency active inductor

2006-05-09

2006-05-09

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Negative resistance or reactance networks of the active type

Simulating specific type of reactance

C333S215000, C330S257000

Reexamination Certificate

active

07042317

ABSTRACT:
An active inductor circuit implemented in sub-micron CMOS semiconductor technology is usable at gigaHertz frequencies and includes an input node, a non-inverting transconductor circuit comprising a differential pair of NMOS transistors connected to the input node, an inverting transconductor circuit comprising an NMOS transistor connected to an output node of the non-inverting transconductor circuit and connected to the input node in a gyrator feedback configuration. Varactors coupled to the transconductor circuits tune the frequency and Q of the active inductor circuit.

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