Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-08-21
2007-08-21
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S540000, C330S296000
Reexamination Certificate
active
11047564
ABSTRACT:
A bias-voltage supply circuit of a radio-frequency amplification circuit has the constant-voltage power supply generating a constant voltage higher than the bias voltage, a rectifier transistor and a constant-current power supply supplying a constant current to the rectifier transistor. The rectifier transistor is connected between a supply point of a bias voltage connected to an input terminal of the radio-frequency amplification transistor via an element for bias supply and a power supply voltage supply line, wherein a control terminal is kept by the constant voltage that the constant-voltage power supply generates. Since descent of the electric potential of the input terminal of a radio-frequency signal does not arise because of circuit composition, the radio-frequency amplification circuit has a good saturation characteristic.
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Japanese Office Action; Application No.: 2004-037969; Nov. 21, 2006.
Sasho Noboru
Shoji Norio
Englund Terry L.
Kananen Ronald P.
Rader & Fishman & Grauer, PLLC
Sony Corporation
Wells Kenneth B.
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