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- W2752673497 abstract "Abstract In this letter, a new configuration of sequentially rotated circularly polarized (CP) array antenna with a modified gain is investigated. In order to realize the presented antenna, four Archimedean spiral radiators are applied on a substrate, backed by a circularly slotted ground plane. Also a combination of 180° rat-race coupler and 90° branch-line couplers prepare the employed feeding network in this study. Furthermore, cavity-backed structure is utilized to enhance the antenna gain and achieve a directional radiation pattern over the operating frequency band. This configuration also extends the return loss (RL) and the axial ratio (AR) bandwidths, simultaneously. According to the experimental results, the 2 × 2 CP array antenna has RL bandwidth of 64.28%, AR bandwidth of 54.28%, and peak gain of 10.84 dBic. The close correspondence between the measured and the simulated results validates the proposed design." @default.
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- W2752673497 date "2017-11-01" @default.
- W2752673497 modified "2023-09-24" @default.
- W2752673497 title "A broadband circularly polarized cavity-backed Archimedean spiral array antenna for C-band applications" @default.
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- W2752673497 doi "https://doi.org/10.1016/j.aeue.2017.08.052" @default.
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