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An uncommon fractal construction method is applied in the microwave element design. A novel fractal defected ground structure (DGS) based on micro electro-mechanical system (MEMS) is proposed. The size of this novel fractal DGS can achieve 86% size reduction compared with the conventional dumbbell type DGS. This novel fractal DGS is used in the miniaturization design of L-band microstrip antenna array. The simulation result shows that this novel fractal DGS can effectively reduce the mutual coupling between the antenna elements, so it is helpful to the miniaturization of microstrip array, namely the approximately same gain value can be achieved with the shorter distance between elements.
An uncommon fractal construction method is applied in the microwave element design. A novel fractal defected ground structure (DGS) based on micro electro-mechanical system (MEMS) is proposed. The size of this novel fractal DGS can achieve 86% reduction compared with the conventional fractal DGS is used in the miniaturization design of L-band microstrip antenna array. The simulation result shows that this novel fractal DGS can effectively reduce the mutual coupling between the antenna elements, so it is helpful to the miniaturization of microstrip array, namely the same same gain value can be achieved with the shorter distance between elements.