Wideband and Compact Regular Shape Microstrip Antennas Employing Rectangular Slots Cut Bow-tie Shape Ground Plane

Abstract

Wide bandwidth compact rectangular and equilateral triangular microstrip antennas employing slots cut bow-tie shape ground plane profile are proposed. Amongst all the designs, patch employing three rectangular slots cut bow-tie shape ground plane yields optimum results. Using the rectangular patch, against conventional ground plane design, increase in bandwidth by 20%, resonance frequency, substrate thickness, and patch area reduction by 32%, 0.034λ g , and 61.12%, are respectively achieved. In equilateral triangular patch design, a three rectangular slots cut bow-tie shape ground plane configuration shows bandwidth increase by 30%, and substrate thickness, fundamental mode frequency, and patch size reduction by 0.027λ g , 16.4%, and 36.28%, respectively. Proposed antennas exhibit radiation pattern in the broadside with a gain of more than 5 dBi.

Millimeter Wave Antennas: A State-of-the-Art Survey of Recent Developments, Principles, and Applications

“…For multi-band resonant frequency and bandwidth, the planar design uses the slots [43,44]. Also, Rectangular slots [45], E-shape [46][47][48], U-shape [49,50], fractal-shape [51,52], annular slots [53], Dual-mode slotpatch [54], U-shaped patch-slotted (four-element) design [59], and many more [53][54][55][56][57][58][59][60][61] dominate the radiating plane of the design. To maximize radiation efficiency, match the port at input, of the radiating element, with the microstrip feed line of 50 Ω, which depends on its width.…”