{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T05:37:59Z","timestamp":1740116279161,"version":"3.37.3"},"reference-count":15,"publisher":"World Scientific Pub Co Pte Ltd","issue":"10","funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61571080"],"award-info":[{"award-number":["61571080"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:p> This paper introduces a methodology for implementing multi-band Doherty power amplifiers. Traditionally, a 90<jats:sup>\u2218<\/jats:sup> impedance inverter line is required in Doherty architecture. In this contribution, a generalized impedance inverter line is utilized to construct multi-band Doherty power amplifiers. A tri-band Doherty power amplifier operating at 1.15, 1.85 and 2.55[Formula: see text]GHz is designed to validate the proposed method. Measurement results show the fabricated Doherty power amplifier achieves 6[Formula: see text]dB output back-off drain efficiencies of 62.3%, 49.3% and 50.5% at 1.15, 1.85 and 2.55[Formula: see text]GHz, respectively. The peaking output power of the fabricated tri-band Doherty power amplifier is 43.2, 43.7 and 43.8[Formula: see text]dBm with drain efficiencies of 64.5%, 62.2% and 64.5% at three working frequency points, respectively. Furthermore, when the designed Doherty power amplifier is driven by a 20[Formula: see text]MHz wideband LTE signal with peak-to-average-power ratio of 6.4[Formula: see text]dB, adjacent channel power ratios of [Formula: see text]29.4 and [Formula: see text]57.1[Formula: see text]dBc are achieved before and after digital pre-distortion at 1.85[Formula: see text]GHz. <\/jats:p>","DOI":"10.1142\/s0218126619501706","type":"journal-article","created":{"date-parts":[[2018,10,9]],"date-time":"2018-10-09T21:16:59Z","timestamp":1539119819000},"page":"1950170","source":"Crossref","is-referenced-by-count":1,"title":["Design of a Tri-Band Doherty Amplifier Based on Generalized Impedance Inverter"],"prefix":"10.1142","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8744-395X","authenticated-orcid":false,"given":"Weimin","family":"Shi","sequence":"first","affiliation":[{"name":"School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Songbai","family":"He","sequence":"additional","affiliation":[{"name":"School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, P. R. 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