Amplifier containing programmable impedance for harmonic termination
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United States of America Patent
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Dec 30, 2008
Grant Date -
Apr 3, 2008
app pub date -
Sep 29, 2006
filing date -
Sep 29, 2006
priority date (Note) -
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Abstract
An apparatus and method for eliminating unwanted signal power dissipation in balanced amplifier circuits and for prohibiting unwanted signal power from appearing at the balanced amplifier load is presented. Load impedances to the amplifier power output transistors are maintained very low at unwanted frequencies, and are at an operational impedance level at the fundamental frequency. An impedance network control concept is presented, which may be either manually or automatically implemented.
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