Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2011-01-04
2011-01-04
Nguyen, Khanh V (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S302000, C330S310000
Reexamination Certificate
active
07863976
ABSTRACT:
An adjustable stage in an amplifier. The adjustable stage generally comprises a first common node, a second common node and a plurality of independently selectable parallel amplifier segments. Each of the parallel segments may have an input at the first common node and an output at the second common node, a transistor and an inductor to resonate with a capacitance at a base of the transistor. The present invention advantageously provides a relatively compact power amplifier with an extended output power range at which the amplifier is highly efficient. In preferred embodiments, the input and output matching characteristics are generally independent of the number of selected output amplifier segments.
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IEEE Computer Society and the IEEE Microwave Theory and Techniques Society; “Part 16: Air Interface for Fixed Broadband and Wireless Access Systems”; IEEE Standards for Local and Metropolitan Area Networks; Oct. 1, 2004; IEEE Std 802.16-2004; Institute of Electrical and Electronics Engineers, Inc. New York, NY.
Loeb Wayne A.
Tsai King Chun
Marvell International Ltd.
Nguyen Khanh V
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