Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate
2005-02-22
2005-02-22
Nguyen, Khanh V. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including gain control means
C330S284000
Reexamination Certificate
active
06859102
ABSTRACT:
Embodiments of the present invention include an amplification system and method of controlling an amplifier. The method comprises receiving a first digital signal representing a desired amplifier signal level, receiving a portion of said amplifiers output signal, and adjusting the voltage on a body terminal of said amplifier so that the output signal is maintained in a predetermined range. The amplification system comprises an MOS amplifier wherein the body terminal is adjusted to maintain the output at desired levels. In one embodiment, the body terminal is a fine adjust, and an input attenuator is used for a coarse adjust. In another embodiment, input and output couplers are coupled to the amplifier, and portions of the input and output signals are used to adjust the body terminal to maintain a desired output level.
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Nguyen Khanh V.
PowerQ Technologies, Inc.
Townsend and Townsend / and Crew LLP
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