Envelope Modulator of Polar Transmitter for EDGE
Date Issued
2004
Date
2004
Author(s)
Chen, Chung-Chun
DOI
en-US
Abstract
The transmitter architecture with wireless communication system we investigated that is called the polar transmitter. This architecture is different from conventional quadrature transmitter. As we know, any input signal of baseband message is decomposed into magnitude and phase signal, and then goes through envelope modulator and phase modulator respectively. The modulated envelope and phase message signals are combined and amplified by switched-mode power amplifier. In this paper, we are going to focus on the envelope modulator of polar transmitter and the application of wireless mobile handset.
Subjects
極座標發射機
預失真
振幅鎖定迴路
封包調變器
envelope modulator
ALL
Amplitude Locked Loop
predistortion
polar transmitter
Type
thesis
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