Efficiency enhancement of 250W Doherty power amplifiers using virtual open stub techniques for UHF-band OFDM applications

IEEE MTT-S International Microwave Symposium Digest

Volumn , Issue , 2006, Pages 1356-1359

  Horiguchi, Kenichi ^a   Ishizaka, Satoru ^a   Okano, Toru ^b   Nakayama, Masatoshi ^a   Ryoji, Hayashi ^a   Isota, Youji ^a   Takagi, Tadashi ^a  

^a MITSUBISHI ELECTRIC CORPORATION   (Japan)

^b NHK SCIENCE AND TECHNICAL RESEARCH LABORATORIES   (Japan)

Author keywords

Efficiency; Microwave Doherty amplifiers; MOSFETs; OFDM; Power amplifiers

Indexed keywords

BROADCASTING; ELECTRIC DISTORTION; ELECTRIC IMPEDANCE; ELECTRIC LOADS; ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING; POWER AMPLIFIERS;

EFFICIENCY ENHANCEMENT METHOD; MICROWAVE DOHERTY AMPLIFIERS; VIRTUAL CAPACITIVE OPEN STUB; VIRTUAL OPEN STUB TECHNIQUES;

MICROWAVE AMPLIFIERS;

EID: 34250377959     PISSN: 0149645X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1109/MWSYM.2006.249501     Document Type: Conference Paper

References (10)

1. W.H.Doherty, "A new high efficiency power amplifier for modulated waves," Proc.IRE., vol.24, no.9, pp.1163-1182, Sep. 1936.
2. F.H.Raab, "Efficiency of Doherty RF power-amplifier systems," IEEE Trans. Broadcast., vol.BC-33, no.3, pp.77-83, Sep. 1987.
3. I.Takenaka, H.Takahashi, K.Ishikura, K.Hasegawa, K.Asano, and M.Kanamori, "A 240W Doherty GaAs power FET amplifier with high efficiency and low distortion for W-CDMA base stations," IEEE MTT-S Dig., pp.525-528, 2004.
4. T.Ogawa, T.Iwasaki, H.Maruyama, K.Horiguchi, Y.Ikeda, and H.Kurebayashi, "High efficiency feed-forward amplifier using RF predistortion linearizer and the modified Doherty Amplifier", IEEE MTT-S Dig., pp.537-540,2004.
5. S.Goto, T.Kunii, A.Inoue, K.Izawa, T.Ishikawa, and Matsuda, "Efficiency enhancement of Doherty amplifier with combination of class-F and inverse class-F schemes for base station application", IEEE MTT-S Dig., pp.839-842,2004.
6. K.Ishii, S.Ohkawa, K.Fujimoto, "An optimization of peaking amplifier in Doherty Configuration", Proc. of the IEICE General Conference, pp.40, Mar. 2004.
7. Jerome Sirois, Slim Boumaiza, Mohamed Helaoui, Gilles Brassard, and Fadhel M. Ghannouchi, "A robust modeling and design approach for dynamically loaded and digitally linearized Doherty amplifiers, " IEEE Trans Microwave Theory Tech., vol.53, no.9, pp.2875-2883, Sep. 2005.
8. N.Srirattana, A.Raghavan, D. Heo, P.E.Allen, and J.Lasker, "Analysis and Design of a high-efficiency multistage Doherty power amplifier for wireless communications" IEEE Trans Microwave Theory Tech., vol.53, no.3, pp.852-860, Mar. 2003.
9. M.Iwamoto, A.Williams, A.G.Metzger, L.E.Larson, and P.M.Asbeck, "An extended Doherty amplifier with high efficiency over a wide power range," IEEE Trans Microwave Theory Tech., vol.49, no.12, pp.2472-2479, Dec. 2001.
10. Y.Yang, J.Cha, B.Shin and B.Kim, "A fully matched N-way Doherty amplifier with optimized linearity," IEEE Trans Microwave Theory Tech., vol.51, no.3, pp.986-993, Mar. 2003.