Frequency Reconfigurable Multiband MIMO Antenna Base on Gradient Arcs for IoT Devices

Advanced Electromagnetics

卷:10

D. T. T. Tu¹  N. V. Sang² 

[1] Posts and Telecommunication Institute of Technology;

[2] Posts and Telecommunications Institute of Technology;

关键词: Reconfigurable;    MIMO;    IoT;    mutual coupling;   

DOI  :  10.7716/aem.v10i2.1524

来源: DOAJ

【 摘 要 】

A frequency reconfigurable multi-band MIMO antenna is presented in this study. The single antenna consists of only one PIN diode that can change antenna operating frequencies from different quad-band to another one. Their bands not only cover the popular NB-IoT bands such as 900MHz, 1.8GHz, 2.4GHz for  Z-Wave, ZigBee, RFID, GSM communication but also contain 5G IoT bands which are 2.4GHz, 2.6 GHz and 5GHz for LTE-A, 802.11n, ac, and 5G below 10GHz. Basing on the complex structure of ring and new moon shape, the single antenna achieves a compact size of 30 mm x 30 mm x 1.6 mm which is about 76% reduction compared to a conventional ring antenna at 900MHz. Besides, a structure of gradient arcs is proposed to decrease mutual coupling among closed-spaced elements of MIMO antenna for the distance of 0.033l at the lower band from edge to edge. The proposed antennas are analyzed by CST software, VNA measurement, and IEEE 802.11 USB Adapter that the simulated, measured as well as experimental results are agreed well.

【 授权许可】

Unknown