In addition, the gain of the proposed antenna array is improved by using Metamaterial Reflective Surface (MRS). The proposed antenna array is designed, simulated and fabriacated on FR4 substrate with thickness of mm, εr = and tanδ = . The proposed antenna is designed at center frequencies of GHz and GHz, respectively. The simulation results are obtained in CST Microwave Studio software and are compared to measurement ones. | Journal of Science & Technology 123 (2017) 026-031 A Novel Reconfigurable Array Antenna Using Metamaterial Structure Nguyen Ngoc Lan*, Vu Van Yem Hanoi University of Science and Technology, No. 1, Dai Co Viet, Hai Ba Trung, Hanoi, Viet Nam Received: January 06, 2017; Accepted: November 03, 2017 Abstract A novel compact 4x3 elements reconfigurable antenna array using PIN-diode for C and X band applications is presented in this paper. By using metamaterial structure on the ground plane, not only antenna’s bandwidth is improved, but also the size of antenna is reduced. In addition, the gain of the proposed antenna array is improved by using Metamaterial Reflective Surface (MRS). The proposed antenna array is designed, simulated and fabriacated on FR4 substrate with thickness of mm, εr = and tanδ = . The proposed antenna is designed at center frequencies of GHz and GHz, respectively. The simulation results are obtained in CST Microwave Studio software and are compared to measurement ones. Keywords: reconfigurable antenna array, pin diode, frequency reconfigurable antenna, microstrip antenna 1. Introduction * metamaterial structure. The concept of metamaterials (MTMs) was first investigated by Veselago in 1968 [8]. Metamaterials are broadly defined as artificial effectively homogeneous electromagnetic structures with unusual properties not readily available in nature [9]. Currently, metamaterials are used in many fields. Specifically, in the antenna design, metamaterials are used for: gain and bandwidth enhancement [10][11], antenna miniaturize [12][13], reduction in the peak Specific Absorption Rate (SAR) [14][15]. Nowadays, the trend of modern wireless communication systems is smart and reconfigurable. In these systems, antenna is an important component whose quality affects directly to transceive progress. Therefore, the antennas must become smart to be able to meet the above requirements. With their advantages, for example, pattern, .
