Dimensions Selection Criteria of Stair shaped Slot for Obtaining the Wideband Response of CPDRA

Gaurav Varshney; Shailza Gotra; Rakesh Singh; V. S. Pandey; R.S. Yaduvanshi

doi:10.14429/dsj.69.14948

Gaurav Varshney Madanapalle Institute of Technology and Science, Madanapalle - 517 325
Shailza Gotra National Institute of Technology, Delhi - 110 040
Rakesh Singh Indian Institute of Technology, Roorkee - 247 667
V. S. Pandey National Institute of Technology, Delhi - 110 040
R.S. Yaduvanshi Ambedkar Institute of Advanced Communication Technologies and Research, Delhi - 110 031

DOI: https://doi.org/10.14429/dsj.69.14948

Keywords: Circular polarisation, Criterion, Dielectric resonator antenna

Abstract

The analysis of a circularly polarised (CP) dielectric resonator antenna (DRA) with the aperture coupled feeding technique is presented in this paper. Until now, the random techniques have been developed for obtaining the CP response in DRA. It is glaringly required to develop a fixed mathematical criterion for the selection of dimensions of the antenna structure. The criterion for selection of the stair-shaped slot dimensions, which is utilised for obtaining the CP response, is defined in this paper. The ranges of slot length ratios are investigated so that a wide CP bandwidth can be obtained. The antenna offers the 10-dB impedance of 58.62% (4.1 GHz - 7.5 GHz) and 3-dB axial ratio bandwidth of 40.86 per cent (4.26GHz - 6.385 GHz).

Author Biographies

Gaurav Varshney, Madanapalle Institute of Technology and Science, Madanapalle - 517 325

Dr Gaurav Varshney, completed PhD at NIT Delhi, India. Currently, working as Sr. Assistant Professor at MITS Madnapalle, AP, India. His research interests include the microwave, millimeter wave, optical antennas and devices.

Shailza Gotra, National Institute of Technology, Delhi - 110 040

Ms Shailza Gotra, is pursuing PhD at NIT Delhi, India. Her research interests are microwave and millimeter wave
antennas.

Rakesh Singh, Indian Institute of Technology, Roorkee - 247 667

Mr Rakesh Singh, is pursuing PhD at ECE Department, IIT Roorkee, India. His research interests are microwave and
millimeter wave and biomedical antennas.

V. S. Pandey, National Institute of Technology, Delhi - 110 040

Dr V. S. Pandey, PhD (IIT BHU). He worked at DOS Govt. of India, World Class University (WCU) under the collaboration of KAS/JAXA and NASA, at Kyung Hee University, South Korea. Currently, he is with department of AS, NIT Delhi, India. His contribution are in research areas of Microwave, Space Physics, Magneto-hydrodynamics fields and waves.

R.S. Yaduvanshi, Ambedkar Institute of Advanced Communication Technologies and Research, Delhi - 110 031

Mr R.S. Yaduvanshi, had worked on Indigenisation projects of 3D radars at BEL. He has successfully implemented fighter aircraft arresting barrier projects at select flying stations of Indian Air Force. He is professor at AIACTR Delhi, India.