This work investigates the physical insight into cross-polarized (XP) radiations from an asymmetric type microstrip patch such as a triangular geometry for-the-first-time. A thorough study over the full operating band has been executed revealing some insightful information. A gradual decrease in XP fields with increasing frequency has been identified as a peculiar behavior compared to a symmetric patch, such as rectangle, square, and circle. This new feature inspires one in investigating a new physics behind the XP generating source to explain the same. This study should help the microstrip researchers in exploring newer possibilities of dealing with improved radiations from both symmetric and asymmetric patch geometries. © 2018 IEEE.

DEBATOSH GUHA

Radio Physics and Electronics

C SARKAR

Y M M ANTAR

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.

&nbsp;

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.

&nbsp;

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

New Insight into the Cross-Polarized Radiations: Symmetric vs Asymmetric Microstrip Patch Geometries

2018 IEEE Indian Conference on Antennas and Propagation, InCAP 2018

A new design insight has been developed indicating possibilities of improved characteristics to be achieved in coax-fed microstrip antennas in terms of their polarization purity over the entire operating bandwidth. The investigation involves multiple configurations and variations of rectangular and circular patches to ensure conclusive inference. Their impedance profile including the probe parameters has been identified as the controlling factor to the cross-polarized (XP) profile over the band. Subsequently, a well-defined co-relation between the input and XP radiations has been established which leads to a theoretical model. Based on this understanding, an engineered feed with controlled reactance has been conjectured and proposed to achieve improved XP profile with increased polarization purity. This new finding and conjecture have been experimentally verified using multiple sets of prototypes operating in C-band. It confirms the predicted improvement in polarization purity over the entire bandwidth with a maximum of about 7 dB at the band-edge without imposing any change or degradation in other characteristics. © 1963-2012 IEEE.

Journal	Data powered by Typeset2018 IEEE Indian Conference on Antennas and Propagation, InCAP 2018
Publisher	Data powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
Open Access	No