Broadband Fabry‐Perot resonator printed antennas using FSS superstrate with dissimilar size

Abstract

In this article, a new technique is proposed which can handle the singularity problem arising in the MoM solution of the electric field integral equation. The method involves MCI technique in evaluation of the moment matrix elements. One major advantage of the MCI technique is that it removes the singularity problem arising in integration of singular integrand without any analytical modification or approximation to the integrand by only employing the "local correction technique," where the uniformly distributed random points are avoided from falling in the vicinity of the observation points. The technique is applied to the problem of scattering from metallic structures for three different test cases showing the local correction for the singular points in each case. It is evident that this new technique is capable of handling the singularity problem very efficiently and easily. ACKNOWLEDGMENT

Comparative Study of Fabry-Perot Resonator Antenna With PMC and Pec Ground Plane

“…1(b), the load impedance in the transmission line model is imaginary infinity. In [4], it is indicated that the disparities among reflection phases of PRS corresponding to different oblique incident angles up to ±60 • range are small enough to be ignored. Therefore, although PRS shunt susceptance varies with the angle of radiation, for narrow-beam regions of interest, it may be assumed to be constant.…”

“…It essentially provides the benefit of high directivity without requiring the complex network, as the conventional antenna arrays. It has aroused more and more attention [2][3][4] for several years, which results in some interesting conclusions based on different viewpoints and analysis models such as leaky wave model [5][6][7][8][9][10], EBG defect model [11][12][13][14][15][16], FP cavity model [1,2,17,18], equivalent refractive lens model [19,20] have been attained and proposed. A summary of this type of antenna is also presented in [19,21].…”

“…In addition, artificial magnetic conductor (AMC) [22][23][24] has also been proposed to act as ground plane of FPR antenna to improve its performance such as reducing resonant cavity profile [3,4,15,[25][26][27] due to its property to fully reflect incident waves with approximate zero phase shift. It is referred to as a perfect magnetic conductor (PMC), which is complementary to a perfect electric conductor (PEC).…”

A New Miniaturized Fractal Frequency Selective Surface With Excellent Angular Stability

“…FSS exhibits total reflection or transmission characteristic respectively in the neighborhood of the unit cell resonance. It has been used in many applications, such as radome, sub-reflectors of antenna [1][2][3] and superstrates above patch antenna to enhance the antenna directivity [4,5], etc.…”

“…Rectangular loops in slot form are chosen for their dual polarized property and simplicity. The slots have their sides parallel to the edge of patch, lengths 5 and width W. In practical application, various desired operation frequencies can be obtained by adjusting the length of slot and the permittivity of the dielectric substrate. Theoretically, the longer L i (i = 1 ∼ 5) means larger perimeter of the whole slot, which makes the resonant frequency lower.…”