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Theory and analysis of differentially-driven microstrip antennas

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Theory and analysis of differentially-driven microstrip antennas

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Title: Theory and analysis of differentially-driven microstrip antennas
Author: Zhang, Yue Ping; Wang, Jun Jun
Copyright year: 2006
Abstract: This paper studies differentially-driven microstrip antennas. The theory of microstrip antennas based on the improved cavity model is expanded to analyze the input impedance and radiation characteristics of the differentially-driven microstrip antennas. The differentially-driven microstrip antennas were fabricated. Their performances were experimentally verified. Results show that the occurrence of resonance for the differentially-driven microstrip antennas also depends on the ratio of the separation έ of the dual feeds to the free-space wavelength. When the dual feeds are located far from each other έ/λ < 0.1, the resonance occurs, and the input resistance at resonance is rather large. However, when the dual feeds are located near to each other έ/λ < 0.1, the resonance does not occur, the input resistance is quite small, and the input impedance is inductive. Compared with single-ended microstrip antennas, the differentially-driven microstrip antennas have larger resonant resistance, similar co-polar radiation patterns, and lower cross-polar radiation component.
Subject: DRNTU::Engineering::Electrical and electronic engineering.
Type: Journal Article
Series/ Journal Title: IEEE transactions on antennas and propagation
School: School of Electrical and Electronic Engineering
Rights: IEEE Transactions on Antennas and Propagation © 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site.
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