Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2005-08-30
2005-08-30
Nguyen, Khanh V. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S133000, C330S134000, C330S302000, C330S310000
Reexamination Certificate
active
06937097
ABSTRACT:
The present invention relates to a high-frequency power amplifier having differential inputs, and more specifically to a high-frequency power amplifier having differential inputs, in which a structure of an output port of a communication system for 2.4 GHz ISM frequency band can be simplified by designing and producing the high-frequency power amplifier having differential inputs for 2.4 GHz ISM frequency band using a silicon germanium (SiGe) microwave monolithic integrated circuit (MMIC), thereby decreasing the number of components of a transmission unit and reducing a price of the communication system.
REFERENCES:
patent: 6331802 (2001-12-01), Kim
patent: 6614301 (2003-09-01), Casper et al.
patent: 6617931 (2003-09-01), Theus et al.
patent: 6642790 (2003-11-01), Schrödinger et al.
patent: 6781455 (2004-08-01), Kim
Ahn Kee Cheol
Choi Jin Sung
Joo Jae Hong
Kim Kyong Ryol
Institute of Information Technology Assessment
McDermott Will & Emery LLP
Nguyen Khanh V.
Tachyonics Corp.
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