A dual band circularly polarized microstrip antenna on an EBG substrate

Abstract

A novel circularly polarized (CP), single-fed microstrip antenna on an electromagnetic band gap substrate (EBG) is presented. The antenna consists of stacked structure of almost square patches and an EBG substrate for the lower patch. The proposeddesign has a reduced antenna size= compared to theconventional C P microstrip antenna at a given oprating frequency and of lightweight. The impedance and axial ratio bandwidths are large and C P rad ation quality is excellent over the entire upper hemisphere. The antenna features about 1 ldBi gain. The proposed antenna is suitable for global positioning system (GPS) applications.

DUAL BAND ANTENA DESIGN MIKROSTRIP DENGAN BENTUK SLOT BYEMAX UNTUK PENERAPAN FREKUENSI 2.1 GHz LTE

“…Sejumlah publikasi telah menyediakan berbagai solusi untuk frekuensi dual band. Frekuensi dari dual band bisa didapat didapat dengan mudah (Sudha and Vedevathy, 2002).…”

A low-profile circularly polarized microstrip antenna using elliptical electromagnetic band gap structure

“…To overcome the stated drawbacks, researchers proposed electromagnetic band gap (EBG) structures which are periodic/aperiodic metallic/dielectric structures that prohibit the surface waves from traveling in the substrate of the antenna by introducing a specified stop band, thus leading to an improved performance of the antenna. Many researchers have implemented such structures on the antenna's ground surface [12], on its substrate [13], by surrounding it around the patch [14], and also by using it as metasurface [15] and, thus, recuperated the antenna's performance. In [16], mushroom-shaped EBG structures were implemented on the ground plane and, by utilizing its polarization-dependent in-phase reflection property with a dipole antenna placed above it, was able to generate CP waves at 3.56 GHz with an improved performance but with the limitation of a large ground plane of size 100 mm × 100 mm.…”

Compact Dual-Band GPS Microstrip Antenna Using Multilayer LTCC Substrate

“…On the other hand, stacked-patch designs usually have a ratio less than 1.5 [4], [5], which makes it possible to cover the two GPS bands. Stacked CP microstrip antennas [4]- [8] adopt low-relative-permittivity materials with an air gap or a foam layer in between materials [9], [10]. This traditional method results in an increase in the antenna thickness, fabrication complexity, and cost.…”