Design and Analysis of Double CDRA with Extended Wideband Characteristics for C- and X-Band Applications

Abstract

In this article, the design and analysis of a double cylindrical dielectric resonator antenna (CDRA) of compact size 40 × 40 mm² with extended wideband characteristics for C- and X-band applications is presented. A couple of CDRA is placed over the two adjoin rectangular slots which are excited by a modified microstrip feed line of 50 Ω. The proposed double CDRA resonates between frequency band 4.75 and14.43 GHz with 100.93% (9.68 GHz) impedance bandwidth. Two adjoin rectangularslots with a modified microstrip feed line generate two orthogonal degenerated hybrid modes (HEM^x_11δ and HEM^y_11δ), which are liable for the creation of circular polarization characteristics between the frequency band 6.62 and 8.5 GHz with 24.86% (1.88 GHz) 3-dB axial ratio bandwidth. The stable peak gain of 6.27 dB at frequency 12.62 GHz, whereas the gain of 3.31–6.27 dB and radiation efficiency of more than 86% in the entire operating band is obtained.

Keywords:

• Double CDRA
• Microstrip feed line
• Rectangular slots
• Circular polarization (CP)
• LHCP
• RHCP

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Chandravilash Rai

Chandravilash Rai is currently working as research scholar in ECE Department, Indian Institute of Information Technology Allahabad, Prayagraj, UP (India). He completed MTech in 2017 from Rajiv Gandhi Proudyogiki Vishwavidyalaya, University, Bhopal, MP, India, in digital communication and BTech in 2009 from UPTU Lucknow in electronics & communication engineering. His research interests include RF & microwave, DRA, microstrip patch antennas, wireless communication and antenna theory.

Amit Singh

Amit Singh is currently pursuing a PhD from IIIT Allahabad, UP, India. He had completed MTech in 2010 from IIT (BHU), Varanasi UP, India and BTech in 2006 from Uma Nath Singh Institute of Engineering and Technology (VBS Purvanchal University) Jaunpur, UP, India in electronics & communication engineering. He is an expert in the VLSI fabrication and the antennas domain. Email: [email protected]

Santhosh Bhukya

Santhosh Bhukya received BTech in electronics & communication engineering from the Indian Institute of Information Technology, Allahabad in 2020. His research interests are in the simulation and fabrication of antennas. Email: [email protected]

Sanjai Singh

Sanjai Singh received his PhD from the University of Allahabad, UP, India. Currently, he is associate professor in the ECE Department, Indian Institute of Information Technology, Allahabad, UP, India. His research interests include modern physics, semiconductor devices, wave theory and antenna theory. Email: [email protected]

Ashutosh Kumar Singh

Ashutosh Kumar Singh received MTech from MNNIT Allahabad and a PhD from Indian Institute of Information Technology, Allahabad, UP, India. Currently, he is an assistant professor in the ECE Department, Indian Institute of Information Technology, Allahabad, UP, India. His research interests include control systems, electronic circuits, networked control systems, and practical applications of control system theory and antenna theory. Email: [email protected]

Ramesh Kumar Verma

Ramesh Kumar Verma is currently pursuing a PhD from AKTU Lucknow, UP, India. He had completed MTech in 2015 from BIET Jhansi, in digital communication and BTech in 2009 from RKGIT Ghaziabad in electronics & communication engineering. He is an expert in antenna designing, fabrication, IE3D simulation software and particle swarm optimization (PSO) algorithms. Email: [email protected]