Multiband Dual-Mode Doherty Power Amplifier Employing Phase Periodic Matching Network and Reciprocal Gate Bias for 5G Applications
|Title:||Multiband Dual-Mode Doherty Power Amplifier Employing Phase Periodic Matching Network and Reciprocal Gate Bias for 5G Applications||Authors:||Pang, Jingzhou; Dai, Zhijiang; Li, Yue; Li, Meng; Zhu, Anding||Permanent link:||http://hdl.handle.net/10197/11747||Date:||Jun-2020||Online since:||2020-11-26T11:22:36Z||Abstract:||This article presents a novel method to design the multiband Doherty power amplifier (DPA). It is illustrated that phase periodic matching networks (PPMNs) can be used as multiband impedance inverters, off-set elements, and phase compensators to realize multiband DPAs. Moreover, the number of Doherty operation bands can be further increased by employing the reciprocal gate biases. A six-band dual-mode DPA with 1.8-2.2-/3.9-4.3-GHz operation bands in Mode I and 1.52-1.72-/2.38-2.53-/3.67-3.82-/4.53-4.68-GHz operation bands in Mode II using commercial GaN transistors is designed and implemented to validate the proposed method. The fabricated DPA achieves 8.7-13.5-dB gain and 39.6-41.5-dBm peak output power at all the designed bands. Drain efficiency of 49.2%-54.5% and 42.2%-56.7% is measured at a 6-dB output back-off in Mode I and Mode II, respectively. When stimulated by a five-carrier 100-MHz OFDM signal with a 7.7-dB peak-to-average power ratio (PAPR), adjacent channel power ratio (ACPR) of better than -48.9 dBc can be obtained by the proposed DPA after digital predistortion with 35.5%-50.1% average drain efficiency at 1.65/1.95/2.45/3.75/4.1/4.6 GHz, respectively.||Funding Details:||European Commission Horizon 2020
Science Foundation Ireland
|Type of material:||Journal Article||Publisher:||IEEE||Journal:||IEEE Transactions on Microwave Theory and Techniques||Volume:||68||Issue:||6||Start page:||2382||End page:||2397||Copyright (published version):||2020 IEEE||Keywords:||Doherty power amplifier; Dual-mode; 5G; GaN; High efficiency; Multiband; Wideband||DOI:||10.1109/tmtt.2020.2971481||Language:||en||Status of Item:||Peer reviewed||ISSN:||0018-9480||This item is made available under a Creative Commons License:||https://creativecommons.org/licenses/by-nc-nd/3.0/ie/|
|Appears in Collections:||Electrical and Electronic Engineering Research Collection|
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