Method for implementing compensation filter and apparatus for signal bandwidth compensation
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United States of America Patent
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Jun 2, 2015
Grant Date -
Jul 3, 2014
app pub date -
Mar 6, 2014
filing date -
Dec 3, 2012
priority date (Note) -
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Abstract
An apparatus for signal bandwidth compensation is disclosed. The apparatus includes: a digital predistortion filtering unit, a compensation filter, a conversion unit, and a power amplifier; where the digital predistortion filtering unit receives an original signal, performs predistortion processing on the original signal; the compensation filter receives the predistortion signal, compensates for distortion caused during a process of transmitting the predistortion signal to the power amplifier, and outputs a compensated predistortion signal to the conversion unit; the conversion unit receives the compensated predistortion signal, converts the compensated predistortion signal into an analog signal, performs frequency mixing processing, and outputs a predistortion signal experiencing the frequency mixing to the power amplifier; the power amplifier receives the predistortion signal experiencing the frequency mixing, amplifies the predistortion signal experiencing the frequency mixing, and outputs an amplified signal.
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