Power amplifier system

Details Power amplifier system Power amplifier system

2006-05-09

2006-05-09

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

C330S306000

Reexamination Certificate

active

07042294

ABSTRACT:
A power amplifier comprising input means for receiving signals at a plurality of different frequencies; a power transistor for amplifying received signals; first circuitry connected at one end to said power transistor and at another end to a relatively low frequency shorting circuitry, said first circuitry being such that said another end is an open circuit to said different frequencies, said first circuitry having a length which is substantially less than a quarter wavelength of said different frequencies.

REFERENCES:
patent: 5272450 (1993-12-01), Wisherd
patent: 5276406 (1994-01-01), Samay et al.
patent: 5357213 (1994-10-01), Michel et al.
patent: 6236274 (2001-05-01), Liu
patent: 6346859 (2002-02-01), Saitou
patent: 6737923 (2004-05-01), Yamamoto et al.
patent: 2 322 495 (1998-08-01), None

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