Circular-Disk Microstrip Antenna with an Air Gap

Kai-Fong Lee; K. Y. Ho; Jashwant S. Dahele

doi:10.1109/TAP.1984.1143428

Circular-Disk Microstrip Antenna with an Air Gap

Kai-Fong Lee
, K. Y. Ho
, Jashwant S. Dahele

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

137 Citations (Scopus)

Abstract

The circular-disk microstrip antenna with an air gap between the substrate and the ground plane is analyzed using the cavity-model theory. A simple formula for the resonant frequencies is obtained. The internal fields, the radiation fields, the effective loss tangent, and the input impedance are derived when the antenna is provided with a coaxial feed. The theory predicts that the air gap does not alter the relative field patterns significantly but it provides a simple parameter by which the resonant frequencies of the antenna can be tuned. Measurements have been performed on a 5 cm circular-disk microstrip antenna with an air gap and good agreement between theory and experiment is obtained. Copyright © 1984 by The Institute of Electrical and Electronics Engmeers, Inc.

Original language	English
Pages (from-to)	880-884
Journal	IEEE Transactions on Antennas and Propagation
Volume	32
Issue number	8
DOIs	https://doi.org/10.1109/TAP.1984.1143428
Publication status	Published - Aug 1984

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Circular-Disk Microstrip Antenna with an Air Gap",

abstract = "The circular-disk microstrip antenna with an air gap between the substrate and the ground plane is analyzed using the cavity-model theory. A simple formula for the resonant frequencies is obtained. The internal fields, the radiation fields, the effective loss tangent, and the input impedance are derived when the antenna is provided with a coaxial feed. The theory predicts that the air gap does not alter the relative field patterns significantly but it provides a simple parameter by which the resonant frequencies of the antenna can be tuned. Measurements have been performed on a 5 cm circular-disk microstrip antenna with an air gap and good agreement between theory and experiment is obtained. Copyright {\textcopyright} 1984 by The Institute of Electrical and Electronics Engmeers, Inc.",

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AU - Lee, Kai-Fong

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AB - The circular-disk microstrip antenna with an air gap between the substrate and the ground plane is analyzed using the cavity-model theory. A simple formula for the resonant frequencies is obtained. The internal fields, the radiation fields, the effective loss tangent, and the input impedance are derived when the antenna is provided with a coaxial feed. The theory predicts that the air gap does not alter the relative field patterns significantly but it provides a simple parameter by which the resonant frequencies of the antenna can be tuned. Measurements have been performed on a 5 cm circular-disk microstrip antenna with an air gap and good agreement between theory and experiment is obtained. Copyright © 1984 by The Institute of Electrical and Electronics Engmeers, Inc.

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EP - 884

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

IS - 8

ER -

Circular-Disk Microstrip Antenna with an Air Gap

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