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Narrow beamwidth conical dielectric resonator antenna



  1. Department of ECE, G.B. Pant Institute of Engineering & Technology, Pauri Garhwal-246194, Uttarakhand, India
  2. Maharaja Surajmal Institute of Technology, New Delhi
  3. Department of Electronics and Communication Engineering, CT Institute of Engineering and Technology, Jalandhar


The document depicts a novel technique of reducing beamwidth by modifyingthe geometry of Dielectric Resonator Antenna. This work can serve up as a source of narrow beam DRA model. The beam is made more directive by reducing the beamwidth and, to this end, diverse geometries such as hemispherical (HS), snap head (SH), concave (CV), Cone[CN] have been stacked on already prevailing rectangular dielectric resonator antennas (RDRA) to reduce beam-width, high gain of the antenna for applications in wireless local area networks (WLAN), line of sight (LOS) communication, etc.The submitted concept is endorsed by numerous interesting numerical results, involving HFSS full-wave electromagnetic simulations. Further, the conical lens structure seems to present the highest gain of 8.23 dBi with a reasonable beamwidth of 〖48.33〗^oin E plane and〖33.44〗^0 in H plane. Hence, conical geometry is fabricated and measured to present the best outcomeamongstall geometries. Its operating frequency band ranges from (5.55GHz to 5.89 GHz).The modelis additionallyexamined for circular polarisation. The orthogonal mode pair of higher-ordermode TE_δ15^xand〖 TE〗_1δ5^y has been excited at frequency 5.67 GHz and 5.74 GHz,correspondingly.The impedance matching bandwidth of 2.97% (5.55-5.89 GHz) in concurrence with axial ratio bandwidth of .61%(5.67-5.74 GHz) has been accomplished. This can be established as a forthcomingstrategy on beam control, which may substitute bulky phase shifters employed in radars..


Conical dielectric resonator antenna, Beamwidth, Axial ratio.

Submitted at: July 29, 2021
Accepted at: April 8, 2022


AJAY KUMAR, RICHA GUPTA, SAKSHI RAJPUT, KAMALJIT SINGH BHATIA, HARSIMRAT KAUR, A. K.GAUTAM, Narrow beamwidth conical dielectric resonator antenna, Journal of Optoelectronics and Advanced Materials Vol. 24, Iss. 3-4, pp. 175-186 (2022)