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When an antenna has poor efficiency, the input power is only partially radiated and is primarily wasted due to internal losses such as conduction, dielectric, mismatching, and several other losses within the antenna. In order to enhance signal quality, a communication system requires an antenna with high efficiency and gain. The fifth\u2010generation wireless system will use millimeter wave spectrum along with sub 1\u2009GHz and sub 6\u00a0GHz bands to fulfill wide bandwidth, ultra\u2010high\u2010speed, and low latency requirements of 5G communication. Compact low\u2010profile antenna with high radiation efficiency, high gain, and wideband characteristics are required to support bandwidth requirements of 5G and mitigate the signal degradation due to high link losses caused by environmental absorptions at the millimeter\u2010wave (mm\u2010wave) spectrum. Compact planar antennas have become an important part of modern wireless communication equipment, but these antennas are associated with many issues like low efficiency, poor gain, small radiation resistance, and high cross\u2010polarization, which is due to the increased conductor and dielectric losses, surface wave losses and so forth. Various techniques need to be employed for the improvement of the efficiency of the antenna, which results in high gain low loss antenna characteristics. This article presents the survey of various efficiency enhancement techniques for 5G antennas and a review of structures that provides good radiation efficiency for 5G communications.<\/jats:p>","DOI":"10.1002\/ett.4530","type":"journal-article","created":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T11:12:42Z","timestamp":1651835562000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Efficiency enhancement techniques of microwave and millimeter\u2010wave antennas for 5G communication: A survey"],"prefix":"10.1002","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2673-2299","authenticated-orcid":false,"given":"Tapan","family":"Nahar","sequence":"first","affiliation":[{"name":"Department of Electronics &amp; Communication Engineering Manipal University Jaipur  Jaipur India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1001-3070","authenticated-orcid":false,"given":"Sanyog","family":"Rawat","sequence":"additional","affiliation":[{"name":"Department of Electronics &amp; Communication Engineering Manipal University Jaipur  Jaipur India"}]}],"member":"311","published-online":{"date-parts":[[2022,5,6]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.3020952"},{"key":"e_1_2_6_3_1","doi-asserted-by":"crossref","unstructured":"HuangHC.Overview of antenna designs and considerations in 5G cellular phones. 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