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Design of N-way distributed Doherty amplifier for WCDMA and OFDM applications

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8 Author(s)
K. J. Cho ; Dept. of Radio & Sci. Eng., Kwangwoon Univ., Nowon-Gu Seoul ; W. J. Kim ; S. P. Stapleton ; J. H. Kim
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A novel three-way distributed Doherty power amplifier with an extended efficiency range for WCDMA or OFDM repeater or base-station applications is presented. This distributed Doherty amplifier consists of one main amplifier and two peaking amplifiers. To achieve high efficiency at a high back-off power, the peaking amplifier structure is based on the dual-fed distributed amplifier form. The 2140 MHz measured results of the three-way distributed Doherty amplifier yielded an 11 dB power gain, with 39.5% power added efficiency at 9.5 dB back-off power

Published in:

Electronics Letters  (Volume:43 ,  Issue: 10 )