| URN |
etd-0816107-183237 |
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| Author |
Jr-yung Du |
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| Author's Email Address |
No Public. |
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| Statistics |
This thesis had been viewed 5578 times. Download 7033 times. |
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| Department |
Electrical Engineering |
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| Year |
2006 |
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| Semester |
2 |
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| Degree |
Master |
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| Type of Document |
|
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| Language |
zh-TW.Big5 Chinese |
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| Title |
A Study of Digital Baseband Predistortion Technique for Linearizing RF Power Amplifiers |
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| Date of Defense |
2007-07-16 |
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| Page Count |
74 |
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| Keyword |
Power Amplifier
LUT
Digital Predistortion
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| Abstract |
This thesis presents a transmitter with digital baseband predistorter to improve linearity of power amplifier. The architecture adopts the look-up table predistorter base on a polar scheme, and realizes the digital processor using FPGA. The predistortion for AM/AM and AM/PM nonlinear relations in a 0.5μm GaAs pHEMT class-AB power amplifier has been performed. One-tone, two-tone and multi-tone continuous waves generated by baseband signal are used for linearity test. The results demonstrate that the digital predistortion technique can effectively improve intermodulation distortion. With this technique, the power amplifier can operate in the higher power range to achieve a similar linearity and a higher efficiency. |
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| Advisory Committee |
Sheng-Fuh Chang - chair
Tzong-Lin Wu - co-chair
Kang-Chun Peng - co-chair
Huey-Ru Chuang - co-chair
Tzyy-Sheng Horng - advisor
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| Files |
indicate access worldwide |
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| Date of Submission |
2007-08-16 |
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