Frequency Reconfigurable Smart Antenna With Integrated Electroactive Polymer for Far-Field Communication

被引:18
作者
Chang, Xi Liang [1 ]
Chee, Pei Song [1 ]
Lim, Eng Hock [2 ]
Nam-Trung Nguyen [3 ]
机构
[1] Univ Tunku Abdul Rah, Dept Mechatron & Biomed Engn, Kajang 43000, Malaysia
[2] Univ Tunku Abdul Rahman, Dept Elect & Elect Engn, Kajang 43000, Malaysia
[3] Griffith Univ, Queensland Micro & Nanotechnol Ctr, Nathan, Qld 4111, Australia
关键词
Actuators; Antennas; UHF antennas; Resonant frequency; Tuning; Microstrip antennas; Surface impedance; Frequency tunable antenna; ionic polymer metal composite (IPMC) flap; ultrahigh-frequency (UHF) radio frequency identification (RFID); FOLDED-PATCH ANTENNA; RFID TAG ANTENNA; MICROSTRIP ANTENNA; BACK-RELAXATION; MEMS; PERFORMANCE; MANAGEMENT; ACTUATORS; PROXIMITY; DESIGN;
D O I
10.1109/TAP.2021.3111161
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
For the first time, the ionic polymer metal composite (IPMC) actuator is integrated with a radio frequency identification (RFID) tag antenna for achieving frequency reconfiguration in the ultrahigh-frequency (UHF) band. Here, the IPMC movable flap serves as an actuator that can effectively tune the tag resonant frequency. By applying a two-layer-crenelated structure and employing a surface patterned electrode for restraining back relaxation, the deflection of the IPMC actuator can be significantly improved. The IPMC actuator can move in two directions, enabling two-degree frequency tuning. Numerical and experimental data confirm that the tip displacement of the IPMC actuator can be enhanced up to 266% with the use of the two-layer-crenelated structure. The IPMC actuator allows the resonant frequency of the tag antenna to be tuned back by as much as 35 MHz, after deviating due to placing on an unintended object. UHF RFID application is also performed using a portable commercial RFID reader. Good frequency reconfiguration and broad tuning range, along with far read distances, have been achieved with our tunable UHF RFID tag antenna.
引用
收藏
页码:856 / 867
页数:12
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