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Xie G, Zhao Z, Yan Y, et al. Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array. Sci Rep. 2016;6:37078doi: 10.1038/srep37078.
Xie, G., Zhao, Z., Yan, Y., Li, L., Ren, Y., Ahmed, N., Cao, Y., Willner, A. J., Bao, C., Wang, Z., Liu, C., Ziyadi, M., Talwar, S., Sajuyigbe, S., Ashrafi, S., Tur, M., Molisch, A. F., & Willner, A. E. (2016). Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array. Scientific reports, 637078. https://doi.org/10.1038/srep37078
Xie, Guodong, et al. "Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array." Scientific reports vol. 6 (2016): 37078. doi: https://doi.org/10.1038/srep37078
Xie G, Zhao Z, Yan Y, Li L, Ren Y, Ahmed N, Cao Y, Willner AJ, Bao C, Wang Z, Liu C, Ziyadi M, Talwar S, Sajuyigbe S, Ashrafi S, Tur M, Molisch AF, Willner AE. Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array. Sci Rep. 2016 Nov 11;6:37078. doi: 10.1038/srep37078. PMID: 27833168; PMCID: PMC5105144.
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Sci Rep. 2016 Nov 11;6:37078. doi: 10.1038/srep37078.

Demonstration of Tunable Steering and Multiplexing of Two 28 GHz Data Carrying Orbital Angular Momentum Beams Using Antenna Array.

Scientific reports

Guodong Xie, Zhe Zhao, Yan Yan, Long Li, Yongxiong Ren, Nisar Ahmed, Yinwen Cao, Asher J Willner, Changjing Bao, Zhe Wang, Cong Liu, Morteza Ziyadi, Shilpa Talwar, Soji Sajuyigbe, Solyman Ashrafi, Moshe Tur, Andreas F Molisch, Alan E Willner

Affiliations

  1. Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
  2. Intel Labs, Intel Corporation, Santa Clara, CA 95054, USA.
  3. NxGen Partners, Dallas, TX 75219, USA.
  4. School of Electrical Engineering, Tel Aviv University, Ramat Aviv 69978, Israel.

PMID: 27833168 PMCID: PMC5105144 DOI: 10.1038/srep37078

Abstract

In line-of-sight communication systems, accurate alignment between the transmitter and receiver is important to guarantee sufficient signal power at the receiver. Such alignment is even more important for orbital angular momentum (OAM) multiplexing systems since misalignment between the transmitter and receiver may cause crosstalk among channels. In this paper, we demonstrate the simultaneous generation and tunable steering of two OAM beams utilising a custom-designed circular antenna array at 28 GHz. We achieve a steering angle of up to 35 degrees from the antenna array normal. We find that (i) the steering angle of the generated OAM beams is limited by the emitting angle of the antenna elements, and (ii) a larger steering angle may degrade the mode purity of the generated OAM beams as well as induce inter-symbol-interference to each of the individual channels. Moreover, we demonstrate the transmission of two 1-Gbaud quadratic phase shift keying (QPSK) signal over the two steerable OAM beams with both multiplexed channels achieved bit error rates (BERs) of <3.8 × 10

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