COMMUNICATION APPARATUS FOR SUPPORTING ENVELOPE TRACKING MODULATION AND ENVELOPE DELAY OPTIMIZATION METHOD

COMMUNICATION APPARATUS FOR SUPPORTING ENVELOPE TRACKING MODULATION AND ENVELOPE DELAY OPTIMIZATION METHOD

A method is provided. The method includes estimating adjacent channel leakage ratios respectively corresponding based on a test output signal output from a power amplifier according to a test input signal corresponding to a plurality of frequencies; selecting a test delay value corresponding to a la...

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Hauptverfasser: Noh, Heesang, Yeon, Haedong, Baek, Changhyun, Choi, Hongmin, Lee, Junse
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Sprache:eng
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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creator Noh, Heesang
Yeon, Haedong
Baek, Changhyun
Choi, Hongmin
Lee, Junse
description A method is provided. The method includes estimating adjacent channel leakage ratios respectively corresponding based on a test output signal output from a power amplifier according to a test input signal corresponding to a plurality of frequencies; selecting a test delay value corresponding to a largest value among the estimated adjacent channel leakage ratios; and providing a supply voltage to the power amplifier based on an envelope signal delayed according to the selected test delay value. For each of the plurality of test delay values, a corresponding adjacent channel leakage ratio is estimated based on a ratio of a magnitude of a component included in the test output signal and a magnitude of an inter-modulated component.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title COMMUNICATION APPARATUS FOR SUPPORTING ENVELOPE TRACKING MODULATION AND ENVELOPE DELAY OPTIMIZATION METHOD
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