Design and Analysis of a Low-Profile and Broadband Microstrip Monopolar Patch Antenna

A new microstrip monopolar patch antenna is proposed and analyzed. The antenna has a wide bandwidth and a monopole like radiation pattern. Such antenna is constructed on a circular patch antenna that is shorted concentrically with a set of conductive vias. The antenna is analyzed using a cavity mode...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2013-01, Vol.61 (1), p.11-18
Main Authors: Liu, Juhua, Xue, Quan, Wong, Hang, Lai, Hau Wah, Long, Yunliang
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Applied sciences
Bandwidth
Cavity model
Cavity resonators
Exact sciences and technology
low profile
microstrip antenna
Microstrip antennas
monopolar antenna
Patch antennas
Radiocommunications
Resonant frequency
Telecommunications
Telecommunications and information theory
wide bandwidth
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Summary:A new microstrip monopolar patch antenna is proposed and analyzed. The antenna has a wide bandwidth and a monopole like radiation pattern. Such antenna is constructed on a circular patch antenna that is shorted concentrically with a set of conductive vias. The antenna is analyzed using a cavity model. The cavity model analysis not only distinguishes each resonating mode and gives a physical insight into each mode of the antenna, but also provides a guideline to design a broadband monopolar patch antenna that utilizes two modes (TM 01 and TM 02 modes). Both modes provide a monopole like radiation pattern. The proposed antenna has a simple structure with a low profile of 0.024 wavelengths, and yields a wide impedance bandwidth of 18% and a maximum gain of 6 dBi.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2214996