Broadband, Wide Efficiency Range, Doherty Amplifier Design Using Frequency - Varying Complex Combining Load
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員

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摘要This paper presents a novel technique to extend the bandwidth and efficiency range of Doherty Power Amplifier (DPA) by the adoption of frequency-varying Complex Combining Load (CCL) and proper input current control strategy. For verification, a 42 dBm, 1.8-2.2 GHz DPA with OBO of 9 dB was designed, built and characterized. Under Continuous Wave (CW) stimulation, a back-off efficiency (8.5 dB) of 55-59% and saturation efficiency of 69-73% were observed over the entire bandwidth. With single carrier WCDMA signal excitation (PAPR of 9.3 dB), an average drain efficiency of 53-58% was obtained at 33.5 dBm average output power and Adjacent Channel Leakage Power (ACLR) of around -30 dBc.
著者Fang XH, Cheng KKM
會議名稱IEEE MTT-S International Microwave Symposium (IMS)
會議開始日17.05.2015
會議完結日22.05.2015
會議地點Phoenix
會議國家/地區美國
詳細描述IEEE,
出版年份2015
月份1
日期1
出版社IEEE
電子國際標準書號978-1-4799-8275-2
國際標準期刊號0149-645X
語言英式英語
關鍵詞Broadband; Complex Combining Load; Doherty Power Amplifier; Frequency-varying Load
Web of Science 學科類別Computer Science; Computer Science, Theory & Methods; Engineering; Engineering, Electrical & Electronic; Physics; Physics, Applied

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