A High Power Asymmetric Doherty Amplifier with Improved Linear Dynamic Range
An asymmetric high power extended Doherty amplifier, which has the extended peak efficiency over a 9-dB of output power and a linear dynamic range is presented in this paper. The power amplifier is designed by using two different LDMOS FET's for W-CDMA base station applications. To realize the...
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Published in | 2006 IEEE MTT-S International Microwave Symposium Digest pp. 1348 - 1351 |
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Main Authors | , , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.06.2006
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Abstract | An asymmetric high power extended Doherty amplifier, which has the extended peak efficiency over a 9-dB of output power and a linear dynamic range is presented in this paper. The power amplifier is designed by using two different LDMOS FET's for W-CDMA base station applications. To realize the peak efficiency extension and a linear dynamic range, a two times larger peaking device compared to the main device, and an unequal power divider is used. This asymmetric Doherty amplifier obtained a measured P1dB of 49.8 dBm. An efficiency of 31.1 % and an ACLR of -35 dBc are achieved at 9 dB back-off point, respectively |
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AbstractList | An asymmetric high power extended Doherty amplifier, which has the extended peak efficiency over a 9-dB of output power and a linear dynamic range is presented in this paper. The power amplifier is designed by using two different LDMOS FET's for W-CDMA base station applications. To realize the peak efficiency extension and a linear dynamic range, a two times larger peaking device compared to the main device, and an unequal power divider is used. This asymmetric Doherty amplifier obtained a measured P1dB of 49.8 dBm. An efficiency of 31.1 % and an ACLR of -35 dBc are achieved at 9 dB back-off point, respectively |
Author | Ji-Yeon Kim Stapleton, S.P. Kyoung-Joon Cho Jong-Heon Kim Ju-Young Lee |
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Snippet | An asymmetric high power extended Doherty amplifier, which has the extended peak efficiency over a 9-dB of output power and a linear dynamic range is presented... |
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SubjectTerms | Asymmetric Doherty Dynamic range Efficiency extension FETs High power amplifiers Impedance linear dynamic range Multiaccess communication Peak to average power ratio Power amplifier Power amplifiers Power dividers Power engineering and energy Power generation |
Title | A High Power Asymmetric Doherty Amplifier with Improved Linear Dynamic Range |
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