A microwave Doherty amplifier employing envelope tracking technique for high efficiency and linearity

IEEE Microwave and Wireless Components Letters

Volumn 13, Issue 9, 2003, Pages 370-372

  Yang, Youngoo ^a   Cha, Jeonghyeon ^a   Shin, Bumjae ^a   Kim, Bumman ^a  

^a Pohang University of Science and Technology (POSTECH)   (South Korea)

Author keywords

Adjacent channel leakage ratio (ACLR); Envelope tracking; Microwave Doherty amplifier; Power added efficiency (PAE); Wideband code division multiple access (WCDMA)

Indexed keywords

BROADBAND NETWORKS; CODE DIVISION MULTIPLE ACCESS; LINEAR NETWORK ANALYSIS; MOSFET DEVICES; SIGNAL RECEIVERS;

ADAPTIVE CONTROLLED GATE BIAS CIRCUIT; ADJACENT CHANNEL LEAKAGE RATIO; MICROWAVE DOHERTY AMPLIFIER; POWER ADDED EFFICIENCY; WIDEBAND CODE DIVISION MULTIPLE ACCESS;

MICROWAVE AMPLIFIERS;

EID: 0141954027     PISSN: 15311309     EISSN: None     Source Type: Journal    
DOI: 10.1109/LMWC.2003.817130     Document Type: Letter

References (5)

1. S. C. Cripps, RF Power Amplifiers for Wireless Communications. Norwood, MA: Artech House, 1999.
2. D. M. Upton, "A new circuit topology to realize high efficiency, high linearity and high power micro amplifiers," in RAWCON'98 Proc., Aug. 1998, pp. 317-320.
3. F. H. Raab, "Efficiency of Doherty RF power amplifier system," IEEE Trans. Broadcast., vol. BC-33, pp. 77-83, Sept. 1987.
4. Y. Yang, J. Yi, Y. Y. Woo, and B. Kim, "Optimum design for linearity and efficiency of microwave Doherty amplifier using a new load matching technique," Microw. J., vol. 44, no. 12, pp. 20-36, Dec. 2001.
5. B. Kim, Y. Yang, J. Yi, J. Nam, Y. Y. Woo, and J. Cha, "Efficiency enhancement of linear power amplifier using load modulation technique," Int. Symp. Microwave Optical Technology Dig., pp. 505-508, June 2001.