Figure 2 - uploaded by Leila Yousefi
Content may be subject to copyright.
Source publication
Similar publications
A dual-band artificial magnetic material and then a dual-band double-negative metamaterial structure based on symmetric spiral resonators are presented. An approximate analytical model is used for the initial design of the proposed structures. The electromagnetic parameters of the proposed metamaterial structure retrieved using an advanced paramete...
Citations
... This is true because the reflection coefficient magnitude is one while the phase angle is zero. [7], [9] The unit cell dimensions shown in figure 2, are 2.25 mm for the hat length and width, along with a 0.38 mm diameter via. The gap between neighbouring hats is 0.15 mm. ...
For wireless communication system such as 3G, GSM 1800, UMTS and Industrial, Scientific and Medical (ISM) band 2.4 technologies the reduced antenna size and good performance is needed. To improve the performance of antenna for short distance wireless communication artificial magnetic conductor(AMC) as ground plane.is preferred. The performances of the proposed antenna are studied using finite element method ANSOFT High Frequency Structure Simulator (HFSS). The proposed antenna is designed for frequency band between 2GHz. to 3 GHz. details of antenna design are described in this paper.
The present work implements the Nicolson-Ross-Weir (NRW) method to find the permittivity and permeability through an algorithm in Matlab® of a magneto - dielectric composed material made of polyester resin and magnetite powders randomly dispersed and oriented vertically and horizontally in the polymeric matrix. The measured data come from the simulation of the S parameters in ADS® between 150 kHz and 4GHz, on a microstrip type transmission line. The algorithm allowed to verify that the best response in high frequency of the magneto - dielectric composed where the vertically orientedparticles, present the highest relative permittivity obtaining Er= 5.5 for 30% wt concentration and Er= 4.5 concentration of 20% wt, with an absorption coefficient which increases in function of frequency and the concentration of magnetite in the functional filler.
In wireless communication system especially in mobile communication system it becomes a challenge to reduce antenna size with enhancement of antenna performance. One of the method to improve antenna performance and reduce antenna size by using an artificial magnetic conductor (AMC) ground plane In this paper designing of rectangular patch antenna with AMC is described with the comparison of results found by using finite element method ANSOFT High Frequency Structure Simulator (HFSS) and results obtained from testing of fabricated antenna practically. The proposed antenna is designed for frequency band between 2GHz. to 3 GHz.
