Amplifiers – With semiconductor amplifying device – Including balanced to unbalanced circuits and vice versa
Reexamination Certificate
2006-05-11
2008-09-02
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including balanced to unbalanced circuits and vice versa
C330S254000, C330S260000
Reexamination Certificate
active
07420423
ABSTRACT:
An active balun device is provided. The active balun device includes: a differential input portion for receiving an external single input signal to output two complementary differential signals; and a differential amplifier connected to the differential input portion in cascade to amplify the two differential signals received from the differential input portion. Thus, the active balun device has a sufficient gain and a desired bandwidth in a semiconductor circuit.
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Lee Young-Jae
Yu Hyun Kyu
Electronics and Telecommunications Research Institute
Nguyen Patricia
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