Using Electromagnetic Bandgap Superstrate to Enhance the Bandwidth of Probe-Fed Microstrip Antenna

Abstract

Abstract-In this paper, the effect of Electromagnetic Bandgap (EBG) Superstrates on return loss of the Probe-Fed Microstrip Antenna (PFMA) has been examined. Originally the EBG superstrate layer made by Frequency Selective Surface (FSS) layers is used to increase the directivity of the PFMA, but to increase the efficiency of the whole structure including the PFMA and EBG superstrate it is necessary to have suitable impedance matching. In this paper the EBG superstrate as a resonance load to the primary radiation source (PFMA) and then by choosing the appropriate geometrical parameters of the structure we can obtain suitable impedance matching beside the directivity enhancement of the primary radiation source.

Application of Generalized Multipole Technique to the Analysis of Discontinuities in Substrate Integrated Waveguides

“…Due to their relatively small radiation losses, supercell approach has been successfully utilized to compute the propagation constants. However, the SIW, which is a promising substitution for rectangular waveguides in planar circuit realization [5], and a special case of electromagnetic bandgap materials [7] is shown to have radiation loss, so that the application of the supercell approach to the SIW may lead to error in computation of propagation constant. Evidently, search for the propagation constants of the SIW should be carried out in the complex plane, which ends up in a very time consuming numerical effort.…”

Electromagnetic Band Gap Structures Incorporate With Dual Band Microstrip Antenna Array

“…Most of the intentions and objectives of the integration of EBG structures with antennas in the literatures [3][4][5][6][7][8][9][10][11][12] were either to steer the beam, suppress surface waves or reflect in-phase incident waves in order to improve the performance of the antennas involved. Innovatively, in [1] the mEBG structures that were positioned in between the respective corporate feed lines and ground plane work as Band Rejecter (BR).…”

A Novel Cross-Slot Geometry to Improve Impedance Bandwidth of Microstrip Antennas

“…Many types of microstrip antennas have been proposed and investigated such as [1,[7][8][9][10][11][12][13][14][15][16][17].…”