Semiconductor instrument

Details Semiconductor instrument Semiconductor instrument

2005-01-25

2005-01-25

Phan, Tho (Department: 2821)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Signal level or switching threshold stabilization

C326S027000, C257S390000

Reexamination Certificate

active

06847226

ABSTRACT:
To provide a semiconductor instrument for improving power added efficiency when a low power is outputted. In the semiconductor instrument in which a radio-frequency input signal (SRF) is supplied to input circuits of a plurality of transistors (1, 2), output circuits of the plurality of transistors (1, 2) are connected in parallel, and a radio-frequency output signal amplified with power is retrieved an amplifying operation of one part transistor (2) of the plurality of the transistors (1, 2) is turned off during a low-output operation.

REFERENCES:
patent: 4999519 (1991-03-01), Kitsukawa et al.
patent: 5391939 (1995-02-01), Nonaka
patent: 5570038 (1996-10-01), Makino et al.
patent: 5726589 (1998-03-01), Cahill et al.
patent: 5955891 (1999-09-01), Makino et al.
patent: 6441679 (2002-08-01), Ohshima

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