Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TE3
Session:
Number:3TE3-5
Metamaterials Cavity Resonator with Simultaneously Shorten Length and Width
Fan-Yi Meng, Fang Zhang, Qun Wu, Jong-Chul Lee,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
There has been much interest recently in the area of engineered materials with unusual electromagnetic properties known as metamaterials. Since the first DNG metamaterial, which consists of metallic split ring resonators (SRRs) and wires, was reported [1], numerous investigations have been conducted both theoretically as well as experimentally in order to make use of the metamaterial to improve the performance of the RF devices, and reduce their size [2, 3]. Particularly, an one-dimensional (1D) miniaturized cavity resonator (MCR) consisting of DNG and DPS bilayer was proposed in [4]. Very recently, the idea of the 1D MCR in [4] was realized in a rectangular cavity, which was filled partially with DNG consisting of Ω-alike inclusions and partially with air [5]. However, the width of the MCR in [5] is still not small enough (it is 22 mm) although the length is small (only 13 mm) at its resonance frequency of 9.6 GHz, due to the fact that the width must be equivalent to the integer multiples of the half of the resonance wavelength. In this presentation, we propose a further miniaturization approach for the MCR through extending the analysis to a three-dimensional (3D) case. We explore the resonance equation solutions of the general case of a 3D rectangular cavity resonator filled with anisotropic metamaterials bilayer. It is shown that both the resonant modes in such a resonant cavity and the transmission characteristics of its corresponding waveguide are closely dependent on the spatial dispersion relation of the filling anisotropic metamaterials. Based on the concept mentioned above, a novel miniaturized rectangular cavity resonator (MRCR) is designed by means of CST’s MW STUDIO simulation tools. Compared with the MCR in [5], the MRCR’s width and length normalized to the resonance wavelength are shorten simultaneously.