Low SAR PIFA Antenna for Wideband Applications

ABSTRACT

In this article, a novel low specific absorption rate (SAR) printed planar invert-F antenna (PIFA) antenna for wideband application is presented. The prototype antenna was designed to cover the frequency range between 1200 and 3000 MHz. Its radiation pattern is approximately omnidirectional, VSWR < 2, gain in the range 2–4.6 dBi, and efficiency greater than 78%. The prototype antenna exhibits a low SAR of around 1.04 for 1 g at 1800 MHz, which is less than 51% than a conventional PIFA antenna. The antenna's performance was evaluated using finite element method (FEM) and time domain method (TDM) in electromagnetic (EM) simulation tools like HFSS and CST Microwave Studio. These results are compared with measured data. The antenna's wide band covers various wireless standards like GPS/DCS/GSM1800/PCS/WLAN/Bluetooth/WiMAX/LTE. The parametric studies clarified the effect of the stub line and via's on voltage standing wave ratio (VSWR).

KEYWORDS:

• Cell phone
• Head tissue
• PIFA
• SAR
• Wide band

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Mohammad Naser-Moghadasi

Mohammad Naser-Moghadasi was born in Saveh, Iran, in 1959. He received the BSc degree in Communication Engineering in 1985 from the Leeds Metropolitan University (formerly Leeds polytechnic), UK. Between 1985 and 1987, he worked as an RF design engineer for the Giga tech Company in Newcastle Upon Tyne, UK. From 1987 to 1989, he was awarded a full scholarship by the Leeds educational authority to pursue an MPhil in studying in CAD of microwave circuits. He received his PhD in 1993 from the University of Bradford, UK. He was offered then a two-year postdoc to pursue research on Microwave Cooking of Materials at the University of Nottingham, UK. From 1995, he joined Islamic Azad University, Science and Research Branch, Iran, where he currently is the head of postgraduate studies and also member of Central Commission for Scientific Literacy & Art Societies. His main areas of interest in research are Microstrip Antenna, Microwave Passive and Active Circuits, radio frequency micro electro mechanical systems (RF MEMS). He is a member of the Institution of Engineering and Technology, MIET and the Institute of Electronics, Information and Communication Engineers (IEICE). He has so far published over 130 papers in different journals and conferences.

E-mail: [email protected]

Zahra Mansouri

Zahra Mansouri was born in Zanjan, Iran. She received her BSc degree in Electrical Engineering (Telecommunication) from Zanjan University, Zanjan, Iran, in 2008 and MSc degree in Electrical Engineering (Telecommunication) from Islamic Azad University, Science and Research Branch, Tehran, Iran, in 2012 and now, she is a PhD student at Islamic Azad University, Science and Research Branch. Her primary research interests are in microwave components such as couplers and power dividers, and metamaterials and UWB antenna.

E-mail: [email protected]

Sachin Sharma

Sachin Sharma was born in India. He received his Bachelor degree in Electronics & Communication from C.C.S University and presently he is pursuing MS from Technical University of Chemnitz, Germany. His major research interest is designing of antenna for wireless and UWB application for radar, microwave Devices, and metamaterials.

E-mail: [email protected]

Ferdows B. Zarrabi

Ferdows B. Zarrabi was born in Babol, Iran. He studied Electrical Engineering at University of Tabriz in major of Communication Engineering in 2008 and now he is pursuing his MS at Tarbiat Modares University. His major research interest is designing of antenna for wireless and UWB application for breast cancer detection radar, Microwave Devices, Absorber, Metamaterial, Plasmonic, Nano-antenna, and THz antenna. He is the author and co-author of more than 32 papers. He is currently work-focused on Fluid Plasmonic for Bio-sensing, Cloak, Photocell development base on Nano-antenna. He is also the reviewer of the Journal of ACES and few other journals.

E-mail: [email protected]

Bal S. Virdee

Bal S. Virdee received the BSc (Hons) degree and MPhil degree in Communications Engineering from the University of Leeds, UK, and PhD degree in Electronic Engineering from the University of London, UK. He has worked in various companies including Philips (UK) as an R&D engineer at Filtronic Components Ltd. as a future products developer in the area of RF/microwave communications. Previously he was a lecturer at several institutions. He is a professor of Microwave Communications in the Faculty of Life Sciences and Computing at London Metropolitan University, where he heads the Center for Communications Technology and is the Director of London Metropolitan Microwaves. His research, in collaboration with industry and academia, is in the area of microwave wireless communications encompassing mobile phones to satellite technology. He has chaired technical sessions at IEEE international conferences and published numerous research papers. He is a fellow of IET.

E-mail: [email protected]