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A new approach is proposed to reject certain bands within the passband of an ultra-wideband planar monopole antenna. The proposed approach that utilizes a mushroom-type electromagnetic-bandgap (EBG) structure is proven to be an effective way for band-notched designs. The approach has many advantages, such as notch-frequency tunability, notch-band width controllable capacity, efficient dual-notch design,...
Open-sleeve dipoles are widely used antennas because they have several parameters that can be adjust to achieve wide range of operating bandwidth. In this paper, an end-loaded planar open-sleeve dipole (ELPOSD) with a magnetic dielectric material based planar EBG substrate is investigated. With S11 < -10 dB, the ELPOSD has a bandwidth of 5.15-10 GHz and the broadband gains precede 6.4 dBi. Including...
A planar antenna composing two back-to-back folded dipoles printed on a dielectric substrate is presented and the performances are investigated when it is mounted on a mushroom-like EBG substrate. A wide impedance bandwidth is achieved of 4.95-6.95 GHz for the constructed prototype, about 33.6% of the central frequency. Within the operation band, stable gain and radiation patterns are obtained, and...
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