Low-Impedance Flexible Archimedean-Equiangular Spiral Antenna

被引：16
作者：
Pan, Taisong [1 ]
Dai, Lingliang [1 ]
Chen, Sihong [1 ]
Yan, Zhuocheng [1 ]
Lin, Yuan [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2019年 / 18卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Antenna input impedance; flexible electronics; spiral antenna; DESIGN;
D O I：
10.1109/LAWP.2019.2930008
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A flexible low-impedance wideband antenna with a hybrid structure of Archimedean spiral and equiangular spiral is presented in this letter. The input impedance of the antenna is reduced to about 75 Omega by the attenuation effect of the equiangular spiral connected to the Archimedean spiral. The prototypes of the designed flexible antennas with and without polydimethylsiloxane encapsulation were fabricated with the copper-clad polyimide film and the transfer-printing technique. The simulation results of impedance and voltage standing-wave ratio show the fabricated antenna can be operated over the frequency range of 2.5-4.5 GHz. The S-parameters of the antennas were measured before and after applying uniaxially tensile strain and complex strain induced by balloon. The results show that S-11 parameter of the antennas maintains less than -10 dB in the operating frequency band with deformation. The mechanical reliability of the antennas was also confirmed by the finite-element analysis of the strain in the copper layer.
引用
收藏
页码：1789 / 1793
页数：5
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