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http://dx.doi.org/10.5515/KJKIEES.2012.23.5.606

A Highly Efficient Multi-Mode Balanced Power Amplifier for W-CDMA Handset Applications  

Kim, Un-Ha (School of Electrical Engineering and Computer Science and INMC, Seoul National University)
Park, Sung-Hwan (School of Electrical Engineering and Computer Science and INMC, Seoul National University)
Park, Hong-Jong (School of Electrical Engineering and Computer Science and INMC, Seoul National University)
Kwon, Young-Woo (School of Electrical Engineering and Computer Science and INMC, Seoul National University)
Kim, Jung-Hyun (Department of Electronics and System Engineering, Hanyang University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.5, 2012 , pp. 606-612 More about this Journal
Abstract
A highly efficient multi-mode balanced power amplifier(PA) structure is proposed for W-CDMA handset applications. The proposed PA has 2-stage amplifier configuration and the stage-bypass and load impedance switching techniques were applied to enhance power efficiency at medium power level as well as low output power level. Using the two techniques, four highly efficient power modes were realized. To demonstrate the usefulness of the proposed structure, a GaAs HBT balanced PA module was designed, fabricated, and measured.
Keywords
Balanced Power Amplifier; Efficiency; Load Insensitive; Load Mismatch; MMIC; W-CDMA;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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