tailieunhanh - Research and Fabrication of an Antenna Based on Meta-materials with Negative Refractive Index

For fast developing materials science, the communication technology also introduces new applications especially in the field of application of new materials and devices. Metamaterials with repeating structures that exhibit the negative refractive index, negative dielectric constant, and negative magnetic permeability promise many benefits in the wireless communication using a new class of microwave antennas. | VNU Journal of Science: Mathematics – Physics, Vol. 32, No. 4 (2016) 63-67 Research and Fabrication of an Antenna Based on Meta-materials with Negative Refractive Index Dang Thi Thanh Thuy* Faculty of Physics, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam Received 18 October 2016 Revised 20 November 2016; Accepted 24 December 2016 Abstract: For fast developing materials science, the communication technology also introduces new applications especially in the field of application of new materials and devices. Metamaterials with repeating structures that exhibit the negative refractive index, negative dielectric constant, and negative magnetic permeability promise many benefits in the wireless communication using a new class of microwave antennas. These novel antennas overcome disadvantages of traditional microwave antennas while having smaller physical size, wider bandwidth and higher efficiency. In this paper we present the results of fabrication and test of metastructured antennas. Keywords: Meta-material, antenna, meta-antenna, negative refractive index 1. Introduction Recent advances in the field of micro and nano materials processing allow us to create a new class of artificial materials whose characteristics fall beyond the limits of conventional traditional materials. The meta-materials are one class of the artificial materials that can be created from the traditional materials by arranging the ordered structures of different shape and size [1]. Recent interest is focused on the meta-materials having negative refractive index as these materials exhibit many important characteristics not available in the traditional materials. Negative refractive index materials were successfully fabricated for the first time in 2000 by Smith, while its properties were predicted theoretically in 1968 by Veselago [2]. These materials themselves are a perfect combination of electrical and magnetic components that simultaneously have the negative .