{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,28]],"date-time":"2025-11-28T12:34:47Z","timestamp":1764333287141,"version":"build-2065373602"},"reference-count":36,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2023,4,11]],"date-time":"2023-04-11T00:00:00Z","timestamp":1681171200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"CAST Innovation Fund of the Fifth Academy of Aerospace Sciences","award":["2022LX-312-Y-GZ-15","CSTB2022NSCQ-MSX1253"],"award-info":[{"award-number":["2022LX-312-Y-GZ-15","CSTB2022NSCQ-MSX1253"]}]},{"DOI":"10.13039\/501100005230","name":"Natural Science Foundation of Chongqing","doi-asserted-by":"publisher","award":["2022LX-312-Y-GZ-15","CSTB2022NSCQ-MSX1253"],"award-info":[{"award-number":["2022LX-312-Y-GZ-15","CSTB2022NSCQ-MSX1253"]}],"id":[{"id":"10.13039\/501100005230","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To be compatible with future wireless communication systems, it is very necessary to extend the bandwidth of the Doherty power amplifier (DPA). In this paper, a modified combiner integrated with a complex combining impedance is adopted to enable an ultra-wideband DPA. Meanwhile, a comprehensive analysis is performed on the proposed method. It is illustrated that the proposed design methodology can provide power amplifier (PA) designers with more freedom in implementing ultra-wideband DPAs. As a concept of proof, a DPA working over 1.2\u20132.8 GHz (a relative bandwidth of 80%) is designed, fabricated and measured in this work. Experimental results showed that the fabricated DPA delivers a saturation output power of 43.2\u201344.7 dBm with a gain of 5.2\u20138.6 dB. Meantime, the fabricated DPA achieves a saturation drain efficiency (DE) of 44.3\u201370.4% and a 6 dB back-off DE of 38.7\u201357.6%.<\/jats:p>","DOI":"10.3390\/s23083882","type":"journal-article","created":{"date-parts":[[2023,4,12]],"date-time":"2023-04-12T02:08:11Z","timestamp":1681265291000},"page":"3882","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Design of Ultra-Wideband Doherty Power Amplifier Using a Modified Combiner Integrated with Complex Combining Impedance"],"prefix":"10.3390","volume":"23","author":[{"given":"Jian","family":"Chen","sequence":"first","affiliation":[{"name":"Space Star Technology Co., Ltd., Beijing 100086, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8350-5391","authenticated-orcid":false,"given":"Zhihui","family":"Liu","sequence":"additional","affiliation":[{"name":"Space Star Technology Co., Ltd., Beijing 100086, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9561-4085","authenticated-orcid":false,"given":"Tao","family":"Dong","sequence":"additional","affiliation":[{"name":"Space Star Technology Co., Ltd., Beijing 100086, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8744-395X","authenticated-orcid":false,"given":"Weimin","family":"Shi","sequence":"additional","affiliation":[{"name":"School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Mengozzi, M., Gibiino, G.P., Angelotti, A.M., Santarelli, A., Florian, C., and Colantonio, P. 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