Semiconductor device

Details Semiconductor device Semiconductor device

2005-12-27

2008-12-09

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

Reexamination Certificate

active

07463111

ABSTRACT:
At least one of wiring areas divided by substrate dividing slits includes a region on which none of the strip conductors is located, the region having a U-shape as viewed in plan and enclosing one of the strip conductors on three sides. The length of the enclosed strip conductor is set such that, at a harmonic of a fundamental frequency, the strip line, including the enclosed strip conductor, exhibits very low impedance and acts as a short circuit. The length of the enclosed strip conductor may be set substantially equal to 1/(4n) times the wavelength corresponding to a fundamental frequency, to short circuit the nth harmonic, where n is an integer. Both ends of the U-shaped region are preferably disposed on the side of the surface of the matching circuit substrate closest to a transistor.

REFERENCES:
patent: 5473281 (1995-12-01), Honjo
patent: 6177841 (2001-01-01), Ohta et al.
patent: 2004-254223 (2004-09-01), None
Inoue et al. “Analysis of Class-F and Inverse Class-F Amplifiers”, IEEE MTT-S Digest, pp. 775-778, 2000.

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