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A Study on the Predistortion Linearizer Controlled by the Individual Order with Frequency Multiplier  

민준기 (광운대학교 전파공학과 초고주파 연구실)
이기학 (광운대학교 전파공학과 초고주파 연구실)
이근태 (광운대학교 전파공학과 초고주파 연구실)
안창돈 (광운대학교 전파공학과 초고주파 연구실)
홍의석 (광운대학교 전파공학과 초고주파 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.12A, 2003 , pp. 1019-1024 More about this Journal
Abstract
In the thesis, we propose a new type of the predistortion linearizer using frequency multiplier The linearizer utilizing the 2nd and 3th harmonic used the individual control of the 3rd and 5th order intermodulation distortion(IMD) component. This structure is composed of wilkinson power combiner for combine and isolation of output signal, 3rd order IMD product controller using doubler and 5th order IMD product controller using tripler. The proposed predistortion linearizer controlled by individual order is obtained for about -16 dBc and 18 dBc of 3rd order and 5th order IMD components, respectively, over the frequency band 870 MHz to 880 MHz at the output power of 34 dBm/tone.
Keywords
Predistortion; Linearizer; High Power Amplifier;
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