volume | PIER Journals

Abstract

In this paper, a new type of defected ground structure (DGS) antenna based on metamaterial is presented. The proposed antenna has the performance of global bandwidth and gain improvements. The miniaturization of the antenna can be achieved by loading metamaterials on the DGS antenna to reduce the resonance frequency of the antenna. Due to the coupling effect between the metamaterial and the DGS, multiple resonant points are generated, thus extending the impedance bandwidth of the antenna. The impedance bandwidth of the proposed antenna ranges from 3.5 GHz to 6.32 GHz (56.6%). The degree of miniaturization is 37.9%, and the measured peak gain is 4.5 dB. The size of the antenna is only 0.35λ₀ × 0.35λ₀ × 0.011λ₀, which has a highly stable antenna efficiency of greater than 90% over the entire operating bandwidth. The proposed antenna is suitable for WLAN and Bluetooth applications.

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Dr. Gengliang Chen

Dr. Cong Guo

Dr. Jincheng Xue

Professor Zhuopeng Wang

Dr. Mingxiang Pang