Microwave tunable inductor and associated methods

Details Microwave tunable inductor and associated methods Microwave tunable inductor and associated methods

2006-12-12

2006-12-12

Mai, Anh (Department: 2832)

Inductor devices

Coils of special configuration

C336S226000

Reexamination Certificate

active

07148783

ABSTRACT:
The inductor, preferably a microwave tunable inductor, includes first and second wires twisted together to define a double helix having a first end and second end with a plurality of twists therebetween. First and second terminals are at the first end of the double helix, and a connection at the second end of the double helix electrically connects the first and second wires in series. The inductance is tuned by adjusting a number of twists in the double helix, and the inductance includes a linear tuning range based upon between about 3 to 10 twist for a tuning range of about 7–12 Nanohenries. The inductor can also resonate and filter, and the double helix affords numerous advantages over conventional single helix inductors.

REFERENCES:
patent: 5057809 (1991-10-01), Chandler et al.
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patent: 6882785 (2005-04-01), Eichelberger et al.
patent: 2004/0004527 (2004-01-01), Geller et al.
K, RF & Microwave Corp., “Mocrowave Inductor KC3 Series” dated Jan. 2003; www.krfm.co.jp.

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