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A novel pattern-reconfigurable cylindrical dielectric resonator antenna is presented. By the incorporation of four p-i-n diode switches and four parasitic elements, the mode of dielectric resonator excited by the probe changed. The antenna’s radiation patterns can be shaped to concentrate energy in four specific directions, while minimizing the gain in other unwanted directions without affecting the...
In this paper, a compact and broadband microstrip-fed antenna using the antisymmetric tapered probe with the triangular element is proposed. As compared with the antipodal Vivaldi antenna, the size can be reduced from one wavelength to 0.85 of a wavelength. Besides, the antenna has a broadband response in which the −10 dB bandwidth covers from 9.24 GHz to 18.14 GHz. Furthermore, the antenna maintains...
A compact and UWB microstrip-fed antenna using three monopoles is proposed. The wideband frequency response of the UWB antenna can be achieved by simply determining the resonance frequencies of the three monopoles. The simulated reflection coefficient is smaller than −10 dB from 3.2 to 10.6 GHz, corresponding to fractional bandwidth of 105.7%. Besides, the antenna shows an omni-directional radiation...
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