Title :
Effect of partial ground plane removal on the front-to-back ratio of a microstrip antenna
Author_Institution :
Dept. of Electron. Eng., Kyonggi Univ., Suwon, South Korea
Abstract :
This study presents a new, simple method for enhancing the front-to-back ratio of a microstrip antenna (MSA) by a partially removed ground plane of the antenna. The effect of the partial ground plane removal in different configurations on the radiation characteristics of a MSA are investigated numerically. The partial ground plane removal reduces the back-lobe radiation of the MSA by suppressing the surface wave diffraction from the edges of the antenna ground plane. To further improve the front-to-back (F/B) ratio of the MSA, a new soft-surface configuration consisting of an array of stand-up split-ring resonators are placed on a bare dielectric substrate near the two ground plane edges. Compared to the F/B ratio of a conventional MSA with a full ground plane of the same size, an improved F/B ratio of 9.7 dB has been achieved for our proposed MSA.
Keywords :
antenna radiation patterns; microstrip antennas; resonators; F-B ratio; MSA; antenna ground plane; back-lobe radiation; bare dielectric substrate; front-to-back ratio; microstrip antenna; partial ground plane removal; radiation characteristics; soft-surface configuration; stand-up split-ring resonators; surface wave diffraction; two-ground plane edges; Diffraction; Gain; Microstrip; Microstrip antennas; Surface waves; Front-to-back Ratio; Microstrip Antenna; Removed Ground Plane; Soft-Surface; Split Ring Resonator (SRR);
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
