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Design of a High Power Asymmetric Doherty Amplifier with a Linear Dynamic Range Characteristic  

Lee Ju-Young (Department of Radio Science & Engineering, Kwangwoon University)
Kim Ji-Yeon (Department of Radio Science & Engineering, Kwangwoon University)
Lee Dong-Heon (Department of Radio Science & Engineering, Kwangwoon University)
Kim Jong-Heon (Department of Radio Science & Engineering, Kwangwoon University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.17, no.6, 2006 , pp. 538-545 More about this Journal
Abstract
In this paper, an asymmetric high power extended Doherty amplifier for WCDMA base-station applications is presented. The amplifier has an extended peak efficiency over 9 dB of output power and a linear dynamic range characteristic. To realize the peak efficiency extension and linear dynamic range characteristic, a two times larger peaking device compared to the main device, and an unequal power divider are used. From the experimental results of 1FA WCDMA signal, this amplifier has an efficiency of 31 % and an ACLR of -35 dBc is achieved at 9 dB back-off from P1 dB.
Keywords
Asymmetric Doherty Amplifier; Unequal Power Divider; Linear Dynamic Range;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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