A quarter mode SIW antenna for short-range wireless communications

Abstract

A wearable textile antenna based on the fundamental mode of a quarter-mode substrate integrated waveguide is presented for short-range wireless applications. The antenna operates in the UHF frequency band, at 868 MHz, has a compact size, and requires minimal manufacturing complexity and a very low production cost. Moreover, it presents a good isolation from the human body, and a significant robustness with respect to deformation. If compared with its substrate integrate waveguide resonator counterpart, the proposed antenna size has been reduced of 75%, without degrading its performance. The proposed structure has been simulated using CST Microwave Studio, and its gain is around 2 dBi, with a broadside radiation pattern. All these features make it very promising for short-range wireless communications.

Keywords:

• Wearable antennas
• SIW antennas
• flexible antennas
• short-range wireless communications

ORCID

Giovanni Andrea Casula http://orcid.org/0000-0002-1770-5977

Additional information

Notes on contributors

Giovanni Andrea Casula

Giovanni Andrea Casula (M'04) was born in 1974. He received the Laurea (summa cum laude) degree in electronic engineering and the Ph.D. degree in electronic engineering and computer science from the University di Cagliari, Cagliari, Italy, in 2000 and 2004, respectively. From 2006 to 2017, he has been an Assistant Professor of Electromagnetic with the Department of Electrical and Electronic Engineering, University of Cagliari, and since 2017 he is Associate Professor in the same University, where he is teaching courses in electromagnetics and antenna engineering. His current research interests are synthesis, analysis, and design of wire, patch and slot antennas, wearable antennas design and interaction with the human body, design of substrate integrated waveguides slot antennas, microwave antennas design using genetic programming, periodic structures design (EBG and AMC) through evolutionary programming, printed log-periodic dipole antennas design using innovative feeding techniques and inkjet printing, and low-cost RFID tag design in the UHF band. He is author or co-author of 38 papers in international journals. He is a member of the Italian Electromagnetic Society. He serves as a reviewer of several international journals.