Amplifiers – With semiconductor amplifying device – Including distributed parameter-type coupling
Reexamination Certificate
2010-01-04
2011-11-15
Nguyen, Khanh (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including distributed parameter-type coupling
C330S054000, C330S295000
Reexamination Certificate
active
08058930
ABSTRACT:
The present disclosure relates to a capacitively-coupled non-uniformly distributed amplifier (NDA) having an input line and an output line that are coupled to one another through an input network and DA segments. The input network includes a group of capacitive elements coupled between the input line and the DA segments to extend a gain-bandwidth product of the NDA. The output line includes inductive elements, and since the NDA is non-uniformly distributed, an inductance of each inductive element decreases moving from an input end of the output line to an output end of the output line to compensate for decreasing impedance along the output line. To compensate for phase velocity variations along the output line, a capacitance of each capacitive element that is coupled to the input line decreases moving from an input end of the input line to an output end of the input line.
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Nonfinal Office Action mailed Feb. 24, 2011 regarding U.S. Appl. No. 12/651,717.
Notice of Allowance mailed Jun. 9, 2011 regarding U.S. Appl. No. 12/651,717.
Nguyen Khanh
RF Micro Devices, Inc.
Withrow & Terranova, P.L.L.C.
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