Resonant frequency of circular microstrip antennas with and without air gaps

An improved analytical model is presented for calculating the resonant frequency of circular microstrip antennas with and without air gaps. Unlike the previous models, the present one is widely applicable to all patch diameters-from very large to very small compared to the height of the dielectric m...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 49; no. 1; pp. 55 - 59
Main Author Guha, D.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2001
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Air gaps
Analytical models
Antenna theory
Antennas
Capacitors
Dielectric constant
Dielectric substrates
Geometry
Mathematical analysis
Mathematical models
Microstrip antennas
Patch antennas
Physics
Resonant frequencies
Resonant frequency
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Summary:An improved analytical model is presented for calculating the resonant frequency of circular microstrip antennas with and without air gaps. Unlike the previous models, the present one is widely applicable to all patch diameters-from very large to very small compared to the height of the dielectric medium below the patch and also to the substrates covering the entire range of dielectric constants. The computed results for different antenna dimensions and modes of resonance are compared with the experimental values.
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ISSN:0018-926X
1558-2221
DOI:10.1109/8.910530