Enhancing the bandwidth of antennas using polymer composites with high dielectric relaxation

Materials Today Electronics Pub Date : 2023-05-01 DOI:10.1016/j.mtelec.2023.100026

Ilkan Calisir , Xiantao Yang , Elliot L. Bennett , Jianliang Xiao , Yi Huang

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引用次数: 1

Abstract

We propose a concept using a frequency-dependent property (dielectric relaxation) of dielectric materials to enhance the bandwidth of the antenna widely used in wireless communications. The bandwidth enhancement can be achieved when a loading dielectric material with a relative permittivity that is inversely proportional to the frequency by the power of n. The bandwidth for a selected antenna example could be increased by 135% when the power n = 2. A solid material, composed of plasticized PVDF containing nano-sized silica particles, exhibiting dielectric relaxation of n = 0.52, is developed in order to prove the theoretical concept and used to test the performance of an example mobile phone antenna. The influence of hydrogen bonding on tuning the frequency-dependent power n in the developed composite material is verified. The bandwidth of the antenna was increased by 18% over the operating frequency band using a newly developed dielectrically relaxing material, n = 0.52 compared to the conventional non-relaxing material, n = 0.

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利用高介电弛豫聚合物复合材料增强天线带宽

我们提出了一种利用介电材料的频率相关特性(介电弛豫)来提高无线通信中广泛使用的天线带宽的概念。当加载相对介电常数与频率成反比的介质材料时，可以实现带宽增强。对于选定的天线示例，当功率n = 2时，带宽可以增加135%。为了证明这一理论概念，我们开发了一种固体材料，由含有纳米级二氧化硅颗粒的增塑PVDF组成，其介电弛豫系数为n = 0.52，并用于测试手机天线的性能。验证了氢键对复合材料中频率相关功率n调谐的影响。与传统的非弛豫材料(n = 0)相比，新开发的介质弛豫材料(n = 0.52)使天线的带宽在工作频带上提高了18%。

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来源期刊

Materials Today Electronics

CiteScore

2.10

自引率

0.00%

发文量