Polydimethylsiloxane as a Potential Antenna Substrate
Polydimethylsiloxane as a Potential Antenna Substrate
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DOI：
10.12693/aphyspola.135.938
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发表时间：
2019-05-01
影响因子：
0.7
通讯作者：
Radzali, R.
中科院分区：
文献类型：
--
作者：
Bakar, A. A.;Hasnan, F.;Radzali, R.
本研究的目的是调查潜在的材料，PDMS作为一个灵活的天线基板为身体为中心的无线应用。提出了一种以薄铜为辐射单元、聚二甲基硅氧烷为衬底的可伸缩柔性天线设计。薄铜片基导体由于其低成本和高导电性而成为良好的材料。聚二甲基硅氧烷是一种廉价且能够承受机械应力的柔性基材。聚二甲基硅氧烷的测量介电常数在测量频率范围内约为2.76至3.00。在天线设计中，接地层通过介质基板与天线的传输线和贴片分离。聚二甲基硅氧烷用作贴片辐射器和接地层的外壳。铜作为辐射体出现，而聚二甲基硅氧烷作为基板。设计的天线的目标谐振频率为2.4 GHz，并已在使用CST软件的仿真中实现。根据介电常数测量，发现聚二甲基硅氧烷的相对介电常数ε（r）在测量的频率和损耗正切（tan δ为0.01至0.05）上为2.76至3.00。所设计的天线具有良好的回波损耗性能和方向图。
The objective of this study is to investigate the potential material, PDMS as a flexible antenna substrate for body centric wireless application. A stretchable and flexible antenna design fabricated with thin copper as the radiating element and using the polydimethylsiloxane as the substrate is presented. Thin copper sheet based conductor has been a good material due to its low cost and high electrical conductivity. Polydimethylsiloxane is a flexible substrate are that are inexpensive and able to withstand mechanical strains. The measured dielectric constant of polydimethylsiloxane is about 2.76 to 3.00 across the measured frequencies. In the antenna design, the ground plane is separated from the transmission line and patch of the antenna by the dielectric substrate. Polydimethylsiloxane acts as an encasing the patch radiator and ground plane. Copper appeared as a radiator while polydimethylsiloxane as a substrate. The targeted resonant frequency of the designed antenna is 2.4 GHz and has been achieved in the simulation using CST software. From the dielectric constant measurement, the relative permittivity epsilon(r) of polydimethylsiloxane was found to be 2.76 to 3.00 across the measured frequency and lossy tangent, tan delta of 0.01 to 0.05. The designed antenna has shown a good return loss performance and radiation pattern.