Differential power combining technique for general power amplifiers using lumped component network

A differential power combining method for general power amplifiers (PAs) with combining and matching network using lumped components is proposed for the first time. The proposed power combining technique greatly reduces board area at 1.95 GHz as compared to the traditional in-phase power combining m...

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Bibliographic Details
Main Authors: Huan-Lin Chang, Po-Tsung Lin, Wei-Chun Hua, Chun-Ping Lin, Che-Yung Lin, Chee Wee Liu, Tzu-Yi Yang, Gin-Kou Ma
Format: Conference Proceeding
Language:English
Subjects:
Differential amplifiers
differential power combining
Germanium silicon alloys
Impedance
impedance transformation ratio
lumped component network
matching loss
Microwave technology
Power amplifiers
Power combiners
Power generation
Power transmission lines
Radio frequency
Silicon germanium
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Summary:A differential power combining method for general power amplifiers (PAs) with combining and matching network using lumped components is proposed for the first time. The proposed power combining technique greatly reduces board area at 1.95 GHz as compared to the traditional in-phase power combining method using transmission line, such as Wilkinson power combiners. The output matching is achieved with smaller impedance transformation ratio and the matching loss is reduced. The proposed SiGe PA with power combining technique achieves 28 dBm output power, 14 dB gain and 22.6% power-added efficiency (PAE) at 1.95 GHz with 1dB output power enhancement as compared to the single PA.
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2006.4429472