Shape Memory Alloy-Based Frequency Reconfigurable Ultrawideband Antenna for Cognitive Radio Systems

被引：16
|
作者：
Sumana, L. [1 ]
Sundarsingh, Esther Florence [1 ]
Priyadharshini, S. [1 ]
机构：
[1] Sri Sivasubramaniya Nadar Coll Engn, Dept Elect & Commun Engn, Chennai 603110, Tamil Nadu, India
来源：
IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY | 2021年 / 11卷 / 01期
关键词：
Strain; Antennas; Temperature measurement; Ultra wideband antennas; Heating systems; Austenite; Patch antennas; Cognitive radio (CR) systems; frequency reconfigurable antenna (RA); shape memory alloys (SMAs); ultrawideband (UWB);
D O I：
10.1109/TCPMT.2020.3042738
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work demonstrates a frequency reconfigurable planar antenna with narrowband and ultra-wideband (UWB) characteristics for cognitive radio systems. The designed antenna has a dimension of 60 x 58 x1.6 mm(3) with a ground plane made of nickel-titanium (Ni-Ti) shape memory alloy (SMA). The antenna operates at a flat condition with frequency 1.46 GHz. Bending the SMA ground plane at an angle of 200 degrees with a transformation temperature of 66 degrees C. The same antenna operates over 3.4-10.2-GHz UWB range. This is due to the SMA phase transformation between martensite and austenite via resistive heating/cooling. The insertion of rectangular slits in the antenna creates dual band-notched characteristics 4.7-5.1 and 5.3-6.0 GHz with VSWR < 2 and S-11 < -10 dB. This creates a different working frequency leading to frequency reconfiguration. Details about the proposed antenna have been discussed along with measured and simulation results.
引用
收藏
页码：3 / 10
页数：8
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