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

Author

Liu, Juhua ; Xue, Quan ; Wong, Hang ; Lai, Hau Wah ; Long, Yunliang

Author_Institution

State Key Lab. of Millimeter Waves, City Univ. of Hong Kong, Kowloon, China

Volume

61

Issue

1

fYear

2013

Firstpage

11

Lastpage

18

Abstract

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 (TM₀₁ and TM₀₂ 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.

Keywords

antenna radiation patterns; broadband antennas; microstrip antennas; monopole antennas; broadband microstrip monopolar patch antenna; cavity model analysis; circular patch antenna; conductive vias; impedance bandwidth; low-profile microstrip monopolar patch antenna; radiation pattern; Antenna radiation patterns; Bandwidth; Cavity resonators; Microstrip antennas; Patch antennas; Resonant frequency; Cavity model; low profile; microstrip antenna; monopolar antenna; wide bandwidth;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2214996

Filename

6280626