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Journal Article
Multiplexed Cassegrain Reflector Antenna for Simultaneous Generation of Three Orbital Angular Momentum (OAM) Modes
- Authors
- Woo Jin Byun, Kwang Seon Kim, Bong Su Kim, Young Seung Lee, Myung Sun Song, Hyung Do Choi, Yong Heui Cho
- Issue Date
- 2016-06
- Citation
- Scientific Reports, v.6, pp.1-8
- ISSN
- 2045-2322
- Publisher
- Nature Publishing Group
- Language
- English
- Type
- Journal Article
- Abstract
- A multiplexed Cassegrain reflector antenna with a 2 × 2 open-ended rectangular waveguide (OERW) matrix feed and an orbital angular momentum (OAM) mode mux is proposed for the simultaneous generation of three OAM modes (l = 0, 짹1). The OAM mode mux (OMM) was designed using sequential combinations of quadrature hybrids, crossovers, and phase shifters to multiplex and demultiplex three OAM modes at the same time. The 2 × 2 OERW matrix feed and the OMM were separately measured and their performances were verified according to proposed theories. A near-field antenna measurement for a multiplexed Cassegrain reflector antenna was conducted to obtain the far-field magnitude and phase patterns around polar elevation angle 罐 and azimuthal angle 過, thus confirming that our antenna can produce three OAM modes simultaneously. We also measured the communication link characteristics of two identical multiplexed antennas. The measurement results show that the channel isolation of three OAM modes is more than 12.7 [dB] and 17 [dB] for fixed and compensated receiver positions, respectively, indicating that the proposed antenna system can be used for independent communication links with the same frequency and polarisation.
- KSP Keywords
- Cassegrain reflector, Communication link, Far-field, Field magnitude, Magnitude and phase, OAM modes, Open-ended, Phase Shifter, Rectangular Waveguide, azimuthal angle, distributed antenna systems(DAS)
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
