DEBATOSH GUHA

Radio Physics and Electronics

CHANDREYEE SARKAR

CHANDRAKANTA KUMAR

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

IEEE Antennas and Propagation Magazine

This work demonstrates for the first time the possibility of realizing a mechanically stable no-adhesive rectangular DRA, which has been a long standing demand for practical implementation. A simple ground plane with vertical metallic pins positioned strategically have been explored as clipping devise to ensure robust fixation of DRA without any glue. The study is based on the dominant TE11δ mode and the proposed design maintains unperturbed modal and the radiation characteristics throughout the band. The design has been executed for a 3.6 GHz antenna indicating its stability in maintaining the said characteristics. As much as 6 dBi gain with about 30 dB co to cross polar isolation has been demonstrated. © 2019 URSI. All rights reserved.

2019 URSI Asia-Pacific Radio Science Conference, AP-RASC 2019

Mechanically stable no adhesive approach for rectangular dielectric resonator antenna: A commercially viable design for practical applications

A new Ground Plane is proposed for probe-fed Dielectric Resonator Antenna (DRA) design, which indeed is an extension of a new concept of glue-less DRA technology reported by the same authors very recently. The technique is basically to resolve a long standing issue, i.e., deployment and fixing of DRA on the metallic ground plane by chemical adhesive. The design focuses on the dominant mode of a DRA without affecting its characteristics. An C-band design has been examined and proposed. The configuration shows unperturbed broadside radiation and ∼ 6 dBi gain, with good co-polar to cross-polar isolation. © 2017 IEEE.

2017 IEEE International Conference on Antenna Innovations and Modern Technologies for Ground, Aircraft and Satellite Applications, iAIM 2017

Compound ground plane designed for probe-fed dielectric resonator antennas

A newly conceived compound ground technique has been explored for dielectric resonator antenna (DRA) and arrays. The aim is to discard the traditional bonding by chemical glue that suffers from several limitations, especially in arrays. The proposed configuration uses a secondary ground plane with strategic perforations and clipping arrangement to achieve required mechanical stability along with accurate DRA positioning. It does not affect any radiation mode(s) or characteristics. The design has been tested for a single as well as a four-element array in S-band indicating close corroboration with its traditional counterpart. Scalability study ensures its operation up to K-band. This technique should find potential applications, especially in large arrays and in any platform subjected to mechanical vibrations. © 2002-2011 IEEE.

IEEE Antennas and Wireless Propagation Letters

Glueless Compound Ground Technique for Dielectric Resonator Antenna and Arrays

Metallic perturbation in a body of a dielectric resonator antenna (DRA) has been explored with a view to improve the purity of modal fields leading to considerable reduction in unwanted cross-polarized (XP) radiations. A coax-fed cylindrical DRA (CDRA) has been examined with a pair of horizontally oriented metal pins protruded symmetrically face to face through it. The concept behind the design has been discussed and established using simulated results followed by a series of experimental verifications. As much as 10 dB reduction in principal plane XP values without affecting the primary radiation has been demonstrated. Purity in the modal fields is accounted for in terms of achieved isolation between co- and cross-polarized radiations, which attains 25-40 dB over 100° beamwidth. © 2015 IEEE.

Journal	Data powered by TypesetIEEE Antennas and Propagation Magazine
Publisher	Data powered by TypesetIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN	1045-9243
Open Access	No