A Miniaturized Triple-Band UWB Antenna With High Transparency

This paper presents a miniaturized triple-band ultra-wideband(UWB) antenna with high transparency. First, the antenna is electrically small, $0.19 \lambda \times 0.24 \lambda$ at 2.37GHz. This is achieved by replacing the upper edge of the rectangular ring with a half ellipse. Second, the antenna achieves up to 82% transparency. This is realized by removing as much metal and substrate as possible where the surface current is weak. Finally, the antenna is triple-band, covering the ranges of 2.372.64GHz, 4.78-5.03GHz, and a ultra-broadband 7.73-12.74GHz. The measured results are in good agreement with the simulated results.