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A wideband circularly polarized (CP) bowtie dipole antenna is proposed for wireless applications. By employing the bowtie-shape dipoles, the proposed antenna can achieve a wide impedance bandwidth. Meanwhile, by integrating with a curved-delay line which provides a 90 ° phase difference, the proposed antenna can radiate a CP pattern. Four parasitic square patches are utilized around the radiation...
A novel wideband circularly polarized (CP) microstrip antenna with pattern improvement is proposed. Four vertical conductive walls surrounded with the radiation patch and four metal isosceles triangle patches located at top of the radiation patch are employed for widening beamwidth. To achieve the miniaturization of the antenna, four slots etched along the diagonals of radiation patch and the folded...
A wideband circularly polarized (CP) antenna with high gain is proposed. The circular polarization performance is obtained by two pairs of orthogonal bowtie dipoles with a coaxial balun feed and a broadband 90° hybrid feed network. Particularly, a design of rectangular ring with eight shorted posts is added around the bowtie dipoles, which can obtain a high gain. To further improve the gain of the...
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