Summary
International Symposium on Antennas and Propagation
2010
Session Number:4FC1
Session:
Number:4FC1-4
Barium Strontium Titanate (BST) Array Antenna Covered with Hexagonal Split Ring Resonator (HSRR) Superstrate for High Gain and High Directive Antenna
F.H.Wee, F.Malek,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Barium Strontium Titanate (BST) is a ferroelectric material which is under consideration as a high dielectric constant material for a number of electronic as well as microwave applications. Moreover, the ferroelectric materials present a great potential for electrically tuneable microwave devices such as phase shifters, mixers and parametric amplifiers [1]. The ferroelectrics in paraelectric phase may exhibit high dielectric constant, low losses at high frequencies, and a temperature coefficient of resonant frequency, which can be adapted to the specific application. The dielectric constant BaO-SrO-TiO2, also known as BST, can be modified by applying a DC bias electric field. Metamaterials which exhibit unique properties not existing for natural materials have attracted great interest in the last years [1]?[3]. Metamaterials are also called left-handed materials (LHM) in particular, in which the vectors E, H and k form a left-handed system. Since the idea proposed by Victor Veselago in 1968 [3], the availability of such a material is taken up nowadays and extended. Recently, the demand of planar high directivity antennas, which can be applied to high speed wireless LAN, satellite reception and various point-to-point radio links, are rapidly rising. In the past few years, new methods for improving the antenna gain is the metamaterial that proposed [1]-[5] and theoretically discussed [6]. A high gain and high directive microstrip patch antenna formed with Barium Strontium Titanate (BST) ceramics and covered with Hexagonal Split Ring Resonator (HSRR) substrate has been investigated in this paper. High gain low-profile antenna design using metamaterial technology operating at WiMAX 2.3-GHz band (2.30-2.40 GHz) application is designed and simulated. The Computer Simulation Technology (CST) Microwave Studio [5] is used for the simulation.