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- W2783305984 abstract "Recovering the original degree of freedom on multiplicity is investigated for orbital angular momentum communication using loop antennas in the 5-GHz band. The induced current is analyzed with generalized Z-matrices, and the orthogonality between antennas of the same radius is analytically shown to be realized by optimizing the relative directions of the ports for the antennas. With four kinds of loop radii, the transmission coefficients among eight antennas are shown by numerical estimation to be suppressed to less than −28.8 dB, where the return losses are better than 25.7 dB. With the analytically obtained port directions, transmission between the 16-element transmitting and receiving arrays was simulated. Simulated transmission isolations were better than 8.2 dB, and those for the antennas of the same radius were better than 11.9 dB. Eight-element transmitting arrays were fabricated, and the measured transmissions between antennas of the same radius were suppressed to less than −22.7 dB, which shows that multiplexing using antennas of the same radius is promising by designing relative port directions." @default.
- W2783305984 created "2018-01-26" @default.
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- W2783305984 date "2017-11-01" @default.
- W2783305984 modified "2023-09-23" @default.
- W2783305984 title "Analysis of doubling multiplicity for OAM communication using loop antenna arrays" @default.
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- W2783305984 doi "https://doi.org/10.1109/apmc.2017.8251645" @default.
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