SELF-TUNING AMPLIFICATION DEVICE
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United States of America Patent
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Issued Date -
May 22, 2014
app pub date -
Apr 10, 2013
filing date -
Nov 19, 2012
priority date (Note) -
Abandoned
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Abstract
Radio frequency (RF) self-tuning amplification devices and methods of amplification for an RF input signal are disclosed. In one embodiment, the RF self-tuning amplification device has a first RF amplifier, a reference RF amplifier, and a tuning circuit. The first RF amplifier includes a first RF amplification circuit to generate an amplified RF output signal from the RF input signal, and a tunable parallel resonator tunable so as to shift an RF output signal phase of the amplified RF output signal. The reference RF amplifier includes a second RF amplification circuit that generates a reference RF signal from the RF input signal, and a resistive load, so that the reference RF signal has a reference RF signal phase. The tuning circuit is configured to tune the tunable parallel resonator to reduce a phase difference between the RF output signal phase and the reference RF signal phase.
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