Bias circuit for the wireless transceiver

Details Bias circuit for the wireless transceiver Bias circuit for the wireless transceiver

2008-07-03

2010-11-02

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S253000, C330S257000

Reexamination Certificate

active

07825730

ABSTRACT:
A bias circuit for the wireless transceiver is disclosed, which can be used for modulating the gain of the amplifier. The bias circuit comprises a first stage bias unit for receiving a constant current, a control voltage, and a first reference voltage and outputting a first outputting current, wherein the control voltage is used for controlling the value of the first outputting current, and further, the first outputting current can be increased or decreased by representing as an analog form, thus, the gain of the amplifier can be modulated according to the first outputting current, and the modulation of the gain can be represented as an analog form, such that the transient response occurred while the gain is modulated can be reduced.

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patent: 6400218 (2002-06-01), Zocher et al.
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patent: 6914812 (2005-07-01), Owen
patent: 2438134 (2001-07-01), None
patent: 1750391 (2006-03-01), None

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