BANDWIDTH ENHANCED CIRCULAR AND ANNULAR RING SECTORAL PATCH ANTENNAS

Multilayer Circularly Polarized Circular Annular Ring Patch

This paper presents the effect on circular polarization of multilayer circular annular ring patch (CARP). A CARP have been fabricated on FR4 substrate of dielectric constant 4.2 and thickness 1.52mm. Experimental resonant frequency impedance bandwidth and Axial ratio of simple CARP, covered CARP, spaced dielectric CARP and CARP with two superstrates have been measured and simulated using full w...

Design and Fabrication of a Compact Annular Ring Slot Patch Antenna of Enhanced Bandwidth

The purpose of this paper is to design and fabrication of an annular ring slot patch antenna with short stub (ARSPA) for mobile applications Digital Cellular System (DCS) (1.711.88) GHz, Personal Cellular System (PCS) (1.85 -1.99) GHz, and Universal Mobile Telecommunications System (UMTS) (1.71-2.17) GHz. Return loss and bandwidth are studied with respect to short stub location. By using short ...

Comparison between Rectangular and Circular Patch Antennas Array

Enhanced Bandwidth Microstrip Patch Antennas Loaded with High Permittivity Dielectric Resonators

A novel technique fitr the bat dividth enhancement of conventional rectangular microstrip antenna is proposed in this paper. When a high permittivity dielectric resonator of suitable resonant frequency was loaded over the patch. the % bandwidth of the antenna was increased by more than five tunes without much affecting its gain and radiation performance. A much more improved bandwidth was obtai...

Full-Wave Spectral Analysis of Resonant Characteristics and Radiation Patterns of High Tc Superconducting Circular and Annular Ring Microstrip Antennas