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This paper presents a PSP (patch with a ring slot and conducting pins) antenna. Using the FDTD method, the PSP antenna is designed to radiate a linearly polarized conical beam over a wide frequency range. The design is performed in three steps. In the first step, a center-fed patch above a ground plate, referred to as the original patch, is analyzed. It is found that the reactive component of the...
A spiral slot antenna consisting of a single arm is etched into the upper plate of a triplate transmission line. Power on a feed strip line located between the upper and lower plates of the triplate is electromagnetically coupled to the spiral slot. The configuration of the spiral slot is optimised for radiation of a circularly polarised wave. An array antenna consisting of spiral slots, to which...
A singly-fed circular patch antenna generates a circularly polarised conical beam with the help of two perturbation elements. The location of the feed point relative to the perturbation elements determines the rotational sense of the circularly polarised wave. Theoretical and experimental results for the radiation pattern and return loss are presented.<<ETX>>
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