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A wideband omnidirectional circularly polarized (CP) microstrip antenna is proposed. The proposed antenna is composed of a disk-loaded coaxial probe, six shorting vias and a circular patch with six vortex slots. Three resonant modes, which include the , top-loaded monopole and modes, with conical radiation patterns can be simultaneously excited in the antenna structure...
A novel printed side shaped elliptical monopole with ultra-wide bandwidth is presented in this paper. The antenna is simulated with CST software and fabricated on a Rogers 5880 dielectric substrate. The measured impedance bandwidth with VSWR<;2 is from 0.8GHz to 6.3GHz. The short axis of the elliptical radiator is reduced for compact designation, and two notches at the sides of the ellipse are...
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