Effects of ground plane size on a square microstrip patch antenna designed on a low-permittivity substrate with an air gap

Author

Nguyen, Minh Tuan ; Kim, Byoungchul ; Choo, Hosung ; Park, Ikmo

Author_Institution

Dept. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea

fYear

2010

fDate

1-3 March 2010

Firstpage

1

Lastpage

4

Abstract

The effects of ground plane size on the characteristics of a square microstrip patch antenna designed on a low-permittivity substrate with an air gap were investigated. The characteristics studied include return loss, gain, half-power beamwidth (HPBW), and radiation pattern. The gain and HPBW varied periodically with increasing ground plane size, and were out of phase with each other. The relationship of the above parameters with the height of the antenna was also considered. Decreasing the antenna height changed the smallest ground plane size for impedance matching, and also reduced back radiation, which improved the front-to-back level of the microstrip patch antenna.

Keywords

air gaps; antenna radiation patterns; impedance matching; microstrip antennas; permittivity; HPBW; air gap; back radiation; gain; ground plane size; half-power beamwidth; impedance matching; low-permittivity substrate; radiation pattern; return loss; square microstrip patch antenna; Antenna feeds; Antenna radiation patterns; Costs; Dielectric substrates; Fabrication; Geometrical optics; Impedance matching; Microstrip antennas; Microstrip components; Patch antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology (iWAT), 2010 International Workshop on

Conference_Location

Lisbon

Print_ISBN

978-1-4244-4883-8

Electronic_ISBN

978-1-4244-4885-2

Type

conf

DOI

10.1109/IWAT.2010.5464869

Filename

5464869