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Compared to the conventional methods, the proposed method will comprehensively reduce the bandwidth requirements for the whole system, which will make the linearization affordable for mmWave PAs. To validate the proposed idea, a 4\u2010carrier 320\u2009MHz modulated signal was employed to excite a mmWave PA with the center frequency of 41\u2009GHz. Experimental results have proven that the proposed method can effectively realize the PA linearization with very narrow Tx\/FB\/BB bandwidth, which largely extends the capability of DPD to the forthcoming 5G era.<\/jats:p>","DOI":"10.1155\/2018\/4510243","type":"journal-article","created":{"date-parts":[[2018,3,19]],"date-time":"2018-03-19T23:31:28Z","timestamp":1521502288000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Digital Predistortion of Ultra\u2010Broadband mmWave Power Amplifiers with Limited Tx\/Feedback Loop\/Baseband Bandwidth"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3710-460X","authenticated-orcid":false,"given":"Chao","family":"Yu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qianyun","family":"Lu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Honglei","family":"Sun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xingwang","family":"Wu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiao-Wei","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,3,19]]},"reference":[{"key":"e_1_2_8_1_2","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6979985"},{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2015.7224717"},{"volume-title":"Behavioral Modeling and Linearization of RF Power Amplifiers","year":"2014","author":"Wood J.","key":"e_1_2_8_3_2"},{"volume-title":"Digital Front End","year":"2011","author":"Guo F.-L.","key":"e_1_2_8_4_2"},{"key":"e_1_2_8_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/MMM.2014.2356037"},{"key":"e_1_2_8_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2006.883243"},{"key":"e_1_2_8_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2016.2640318"},{"key":"e_1_2_8_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2014.2387853"},{"key":"e_1_2_8_9_2","doi-asserted-by":"publisher","DOI":"10.1049\/el:20010940"},{"key":"e_1_2_8_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2006.879264"},{"key":"e_1_2_8_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/MMM.2009.934516"},{"key":"e_1_2_8_12_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2017.2659738"},{"key":"e_1_2_8_13_2","doi-asserted-by":"crossref","unstructured":"GuanL. 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Generalised digital predistortion of RF power amplifiers with low-rate feedback signal Proceedings of the 46th European Microwave Conference EuMC \u203216 October 2016 UK 831\u2013834 https:\/\/doi.org\/10.1109\/EuMC.2016.7824472 2-s2.0-85015203202.","DOI":"10.1109\/EuMC.2016.7824472"},{"key":"e_1_2_8_19_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2017.2758366"},{"key":"e_1_2_8_20_2","doi-asserted-by":"publisher","DOI":"10.1109\/LMWC.2016.2605500"},{"key":"e_1_2_8_21_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2016.2602216"},{"key":"e_1_2_8_22_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2012.2222658"},{"key":"e_1_2_8_23_2","doi-asserted-by":"crossref","unstructured":"YuC. GuanL. andZhuA. 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