LC oscillator formed on a substrate

Details LC oscillator formed on a substrate LC oscillator formed on a substrate

2005-01-11

2005-01-11

Kinkead, Arnold (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1170FE, C331S167000, C331S10800D, C333S184000

Reexamination Certificate

active

06842080

ABSTRACT:
An inductor element30effectively functions even when formed on a substrate and comprises two upper and lower conductors1, 2spirally formed on the front side of a semiconductor substrate3. The conductors1, 2have substantially the same shape. When viewed from the above of the front side of the substrate3, the two conductors1, 2are superposed one on the other almost exactly. Lead wires6a, 6bare connected to the outer end (outer peripheral end) and the inner end (center end) of the conductor1, respectively. The outer end of the conductor1is connected to the inner end of the conductor2through a connection wire6c. The conductor1functions as an inductor conductor and is connected to a circuit provided on the semiconductor substrate3through the lead wires6a, 6b.

REFERENCES:
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Patent Abstracts of Japan, vol. 1996, No. 04 Apr. 30, 1996, JP-07 336138 (Abstract) Dec. 22, 1995.
A. Kral et al; “RF-CMOS Oscillators with Switched Tuning”; Custom Integrated Circuits Conference; 1998; Proceedings of the IEEE 1998; Santa Clara, California; May 11-14, 1998; pp 555-558.

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