Cargando…
Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies
With the emergence of fifth-generation (5G) cellular networks, millimeter-wave (mmW) and terahertz (THz) frequencies have attracted ever-growing interest for advanced wireless applications. The traditional printed circuit board materials have become uncompetitive at such high frequencies due to thei...
Autores principales: | , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8877632/ https://www.ncbi.nlm.nih.gov/pubmed/35209131 http://dx.doi.org/10.3390/molecules27041336 |
_version_ | 1784658466175975424 |
---|---|
author | Zhou, Zepeng Li, Wenqing Qian, Jun Liu, Weihong Wang, Yiming Zhang, Xijian Guo, Qinglei Yashchyshyn, Yevhen Wang, Qingpu Shi, Yanpeng Zhang, Yifei |
author_facet | Zhou, Zepeng Li, Wenqing Qian, Jun Liu, Weihong Wang, Yiming Zhang, Xijian Guo, Qinglei Yashchyshyn, Yevhen Wang, Qingpu Shi, Yanpeng Zhang, Yifei |
author_sort | Zhou, Zepeng |
collection | PubMed |
description | With the emergence of fifth-generation (5G) cellular networks, millimeter-wave (mmW) and terahertz (THz) frequencies have attracted ever-growing interest for advanced wireless applications. The traditional printed circuit board materials have become uncompetitive at such high frequencies due to their high dielectric loss and large water absorption rates. As a promising high-frequency alternative, liquid crystal polymers (LCPs) have been widely investigated for use in circuit devices, chip integration, and module packaging over the last decade due to their low loss tangent up to 1.8 THz and good hermeticity. The previous review articles have summarized the chemical properties of LCP films, flexible LCP antennas, and LCP-based antenna-in-package and system-in-package technologies for 5G applications, although these articles did not discuss synthetic LCP technologies. In addition to wireless applications, the attractive mechanical, chemical, and thermal properties of LCP films enable interesting applications in micro-electro-mechanical systems (MEMS), biomedical electronics, and microfluidics, which have not been summarized to date. Here, a comprehensive review of flexible LCP technologies covering electric circuits, antennas, integration and packaging technologies, front-end modules, MEMS, biomedical devices, and microfluidics from microwave to THz frequencies is presented for the first time, which gives a broad introduction for those outside or just entering the field and provides perspective and breadth for those who are well established in the field. |
format | Online Article Text |
id | pubmed-8877632 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-88776322022-02-26 Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies Zhou, Zepeng Li, Wenqing Qian, Jun Liu, Weihong Wang, Yiming Zhang, Xijian Guo, Qinglei Yashchyshyn, Yevhen Wang, Qingpu Shi, Yanpeng Zhang, Yifei Molecules Review With the emergence of fifth-generation (5G) cellular networks, millimeter-wave (mmW) and terahertz (THz) frequencies have attracted ever-growing interest for advanced wireless applications. The traditional printed circuit board materials have become uncompetitive at such high frequencies due to their high dielectric loss and large water absorption rates. As a promising high-frequency alternative, liquid crystal polymers (LCPs) have been widely investigated for use in circuit devices, chip integration, and module packaging over the last decade due to their low loss tangent up to 1.8 THz and good hermeticity. The previous review articles have summarized the chemical properties of LCP films, flexible LCP antennas, and LCP-based antenna-in-package and system-in-package technologies for 5G applications, although these articles did not discuss synthetic LCP technologies. In addition to wireless applications, the attractive mechanical, chemical, and thermal properties of LCP films enable interesting applications in micro-electro-mechanical systems (MEMS), biomedical electronics, and microfluidics, which have not been summarized to date. Here, a comprehensive review of flexible LCP technologies covering electric circuits, antennas, integration and packaging technologies, front-end modules, MEMS, biomedical devices, and microfluidics from microwave to THz frequencies is presented for the first time, which gives a broad introduction for those outside or just entering the field and provides perspective and breadth for those who are well established in the field. MDPI 2022-02-16 /pmc/articles/PMC8877632/ /pubmed/35209131 http://dx.doi.org/10.3390/molecules27041336 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Review Zhou, Zepeng Li, Wenqing Qian, Jun Liu, Weihong Wang, Yiming Zhang, Xijian Guo, Qinglei Yashchyshyn, Yevhen Wang, Qingpu Shi, Yanpeng Zhang, Yifei Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies |
title | Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies |
title_full | Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies |
title_fullStr | Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies |
title_full_unstemmed | Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies |
title_short | Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies |
title_sort | flexible liquid crystal polymer technologies from microwave to terahertz frequencies |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8877632/ https://www.ncbi.nlm.nih.gov/pubmed/35209131 http://dx.doi.org/10.3390/molecules27041336 |
work_keys_str_mv | AT zhouzepeng flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT liwenqing flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT qianjun flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT liuweihong flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT wangyiming flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT zhangxijian flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT guoqinglei flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT yashchyshynyevhen flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT wangqingpu flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT shiyanpeng flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies AT zhangyifei flexibleliquidcrystalpolymertechnologiesfrommicrowavetoterahertzfrequencies |