Internet of Things Controlled Reconfigurable Antenna for RF Harvesting

被引：6

作者：

Arun, V ^{[1
]}

Marx, L. R. Karl ^{[2
]}

机构：

[1] Anna Univ Reg Campus, Dept Elect & Commun Engn, Madurai 625019, Tamil Nadu, India

[2] Thiagarajar Coll Engn, Dept Elect & Commun Engn, Madurai 625019, Tamil Nadu, India

来源：

DEFENCE SCIENCE JOURNAL | 2018年 / 68卷 / 06期

关键词：

Reconfigurable antenna; Internet of Things antenna; PIN diode switching antenna; Frequency reconfiguration; RF Harvesting; YAGI ANTENNA; FREQUENCY;

D O I：

10.14429/dsj.68.12669

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Internet of Things (IoT) controlled a reconfigurable antenna with PIN diode switch for modern wireless communication is designed and implemented. Direct contact of biasing network with the antenna is eliminated and the switching unit is manipulated through loT method. The proposed antenna has ring structures, in which the outer ring connects the inner ring structure through a PIN diode switch. The dimension of the proposed antenna is reported as 50 mm x 50 mm and its prototype has been made-up on epoxy-Fr4 substrate with 1.6 mm thickness. This antenna setup is made to reconfigurable in four bands (4.5 GHz, 3.5 GHz, 2.4 GHz, and 1.8 GHz) through switching provided by IoT device (NodeMCU). The antenna has a good return loss greater than -10dB.In switching state 2 the antenna has a return loss of -30 dB peak is attained at 3.4 GHz of operating frequency. Similarly the gain response of antenna is good in its operating bands of all switching states and obtained a maximum gain of 2.7 dB in 3.5 GHz. Bidirectional radiation pattern is obtained in all switching states of the antenna.

引用

页码：566 / 571

页数：6

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