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- W4224273003 abstract "A phase-shifted circularly polarised ring microstrip antenna (PS-CP-RMSA), which can switch between three different phases, is proposed. The phase of a circularly polarised antenna can be shifted by changing the angle of rotation. Taking advantage of this property, the proposed PS-CP-RMSA comprises a circularly polarised ring microstrip antenna (CP-RMSA) with three groups of feed lines and perturbation elements; phase shift can be achieved by switching their groups. Thus, the phase of a circularly polarised antenna can be electronically shifted without phase shifters, which has been difficult in the past. Therefore, the PS-CP-RMSA array can perform beam tilt electronically. In this study, PS-CP-RMSA and its four-element array were designed, fabricated, and measured. The maximum circular polarisation gain of the prototype PS-CP-RMSA was 6.3 dBic with an axial ratio of 1.1 dB at 5.7 GHz. The maximum gain of the boresight directional beam of the four-element array was 11.3 dBic with an axial ratio of 0.4 dB at 5.67 GHz. The proposed antenna can be a candidate for a new beam-control method for array antennas." @default.
- W4224273003 created "2022-04-26" @default.
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- W4224273003 date "2022-04-02" @default.
- W4224273003 modified "2023-10-03" @default.
- W4224273003 title "Phase‐shifted circularly polarised ring microstrip antenna and application in phased array antennas" @default.
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- W4224273003 doi "https://doi.org/10.1049/mia2.12245" @default.
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