A Multi-Layer Circularly Polarized Cavity-Backed SIW Beam Steering Array for Satellite Application

Abstract

This paper presents a broadband circularly polarized (CP) cavity-backed antenna array for switched beam applications. The antenna array consists of four SIW CP slot elements which are in a 2 × 2 combination and uses a Butler feeding network. To improve the performance of array’s CP purity, SIW elements in antenna are sequentially rotated with respect to each other. Extracted results show that the antenna has 1.9 GHz impedance bandwidth between the frequency ranges of 9.08 and 10.96 GHz (∼40%). The minimum 3 dB axial ratio bandwidth between ports supports the 9.35–10.37 GHz. The measured peak gain of the presented array is 13.1 dBic that could scan solid angle ∼25 steradian.

KEYWORDS:

• Circular polarization
• Array antenna
• Cavity back
• Slot antenna

Additional information

Notes on contributors

Majid. Fakheri

Mir Majid- Fakheri was born in Urmia, Iran, in 1984. He received the BSc degree in telecommunication engineering from IAU University, Urmia, Iran, in 2006, and MSc degree from Urmia University, Iran, in 2010. Since 2010, He has been with IAU University working with Telecommunications Department at the Faculty of Electrical and Computer Engineering. He is pursuing PhD in telecommunication engineering in SRBIAU University since 2011. His current interests are numerical techniques in electromagnetic, antenna, propagation, neural network, pattern recognition, image processing, substrate integrated waveguide (SIW) and array antenna. Email: [email protected]

M. 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 Gigatech Company in Newcastle Upon Tyne, UK. From 1987 to 1989, he was awarded a full scholarship by the Leeds educational authority. He received his PhD in 1993, from the University of Bradford, UK. He was offered then a two-year Post Doc to pursue research on Microwave cooking of materials at the University of Nottingham, UK. In 1995, Dr. Naser-Moghadasi joined Islamic Azad University, Science & Research Branch, Iran, where he currently is an associate professor and the head of postgraduate studies. His main areas of interest in research are microstrip antenna, microwave passive and active circuits, RF MEMS. Dr Naser-Moghadasi 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 140 papers in different journals and conferences. Corresponding author. Email: [email protected]

R. A. Sadeghzadeh

R A Sadeghzadeh received the BSc degree in telecommunication engineering from K N Toosi University of Technology, Tehran, Iran, in 1984, the MSc in digital communication engineering from the University of Bradford, Bradford, UK, and University of Manchester Institute of Science and Technology (UMIST), Manchester, UK, as a joint program in 1987, and the PhD degree in electromagnetic and antenna from the University of Bradford in 1991. During 1992 to 1997, he worked as a postdoctoral research assistant in the field of propagation, electromagnetic, antenna, biomedical, and wireless communication with the University of Bradford. From 1984 to 1985, he was with Iran Telecommunication Company, Tehran, Iran, working on networking. Since 1997, he has been with the Faculty of Electrical and Computer Engineering, K N Toosi University of Technology. He has published more than 120 referable papers in international journals and conferences. His research interests include numerical techniques in electromagnetics, antenna, propagation, radio networks, wireless communications, nano antennas, and radar systems. Email: [email protected]