© 2009 ETRI Journal, Volume 31, Number 5, October 2009 A novel design of a compact square-ring slot microstrip antenna for achieving circular polarization (CP) operation is proposed and experimentally studied. By using an arrow-shaped slot structure as a radiating element, the resonant frequency of the proposed antenna is significantly lowered, which can lead to a large size reduction for fixed...

This paper presents the design of a multiband square patch antenna with Sierpinski gasket slot in top surface of substrate and Koch loop shape slot in ground. This antenna has been designed to operate within 0.1GHz to 3 GHz frequency range. The antenna has been simulated using IE3D simulator software. The experimental result of the proposed antenna exhibits the five bands. Keywords-Square Patch...

In this paper a Frequency Selective Surface (FSS) as a UWB electromagnetic shield is introduced. The proposed FSS comprises a quasi-J.C-Jerusalem Cross- and a copper ring, which are located at both sides of a FR4 substrate and can represent a S.E -Shielding Effectiveness- better than 20dB in 90% bandwidth of Ultra Wide Band frequency. This structure is compact and thin. Each cell comprises J.C ...

A Compact Corner Split Ring with C Slot Rectangular Microstrip Patch Antenna fed by a 50 Ω microstripline is discussed. split ring shaped slot has been etched in rectangular microstrip antenna. The increases the length of surface current for dominant mode TM10 leading to decrease resonance frequency. Size reduction and hexaband obtained proposed antenna provides both size best suited wireless c...

To meet the demand for modern communication technology, development of satellite communications has been consistently investigated. In this article, a rectangle-type SRR is attached to circular-type obtaining two frequencies in X-band operation. The designed structure exhibits negative metamaterial properties (Epsilon, mu and refractive index are negative) design was fabricated on polyimide die...