One-Body 2-D Beam-Switching Butler Matrix with Waveguide Short-Slot 2-Plane Couplers
Summary :
A 42×42-way one-body 2-D beam-switching Butler matrix with waveguide short-slot 2-plane couplers is designed and fabricated in the 22GHz band. The one-body configuration using the commutativity and the overlapping of units allows reducing the size and loss in comparison with a cascade of matrices beam-switching for the horizontal and the vertical planes. It is achieved by replacing 2×2-way 1-plane couplers in the conventional block configuration for a Butler matrix with 22×22-way 2-plane couplers. The measured bandwidth is approximately 2% restricted by the frequency characteristics of the 2-plane couplers. In the radiation from the aperture array antenna of the 42 output ports, the 3.9dB-down coverage of 3-D solid angle by the sixteen beams is around 1.72 steradian which is same as 27.4% of hemisphere at the design frequency for the aperture spacing of 0.73×0.73 wavelength.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E100-C No.10 pp.884-892
- Publication Date
- 2017/10/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E100.C.884
- Type of Manuscript
- Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
- Category
Authors
Dong-Hun KIM
Tokyo Institute of Technology
Jiro HIROKAWA
Tokyo Institute of Technology
Makoto ANDO
Tokyo Institute of Technology
Keyword
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Dong-Hun KIM, Jiro HIROKAWA, Makoto ANDO, "One-Body 2-D Beam-Switching Butler Matrix with Waveguide Short-Slot 2-Plane Couplers" in IEICE TRANSACTIONS on Electronics,
vol. E100-C, no. 10, pp. 884-892, October 2017, doi: 10.1587/transele.E100.C.884.
Abstract: A 42×42-way one-body 2-D beam-switching Butler matrix with waveguide short-slot 2-plane couplers is designed and fabricated in the 22GHz band. The one-body configuration using the commutativity and the overlapping of units allows reducing the size and loss in comparison with a cascade of matrices beam-switching for the horizontal and the vertical planes. It is achieved by replacing 2×2-way 1-plane couplers in the conventional block configuration for a Butler matrix with 22×22-way 2-plane couplers. The measured bandwidth is approximately 2% restricted by the frequency characteristics of the 2-plane couplers. In the radiation from the aperture array antenna of the 42 output ports, the 3.9dB-down coverage of 3-D solid angle by the sixteen beams is around 1.72 steradian which is same as 27.4% of hemisphere at the design frequency for the aperture spacing of 0.73×0.73 wavelength.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E100.C.884/_p
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@ARTICLE{e100-c_10_884,
author={Dong-Hun KIM, Jiro HIROKAWA, Makoto ANDO, },
journal={IEICE TRANSACTIONS on Electronics},
title={One-Body 2-D Beam-Switching Butler Matrix with Waveguide Short-Slot 2-Plane Couplers},
year={2017},
volume={E100-C},
number={10},
pages={884-892},
abstract={A 42×42-way one-body 2-D beam-switching Butler matrix with waveguide short-slot 2-plane couplers is designed and fabricated in the 22GHz band. The one-body configuration using the commutativity and the overlapping of units allows reducing the size and loss in comparison with a cascade of matrices beam-switching for the horizontal and the vertical planes. It is achieved by replacing 2×2-way 1-plane couplers in the conventional block configuration for a Butler matrix with 22×22-way 2-plane couplers. The measured bandwidth is approximately 2% restricted by the frequency characteristics of the 2-plane couplers. In the radiation from the aperture array antenna of the 42 output ports, the 3.9dB-down coverage of 3-D solid angle by the sixteen beams is around 1.72 steradian which is same as 27.4% of hemisphere at the design frequency for the aperture spacing of 0.73×0.73 wavelength.},
keywords={},
doi={10.1587/transele.E100.C.884},
ISSN={1745-1353},
month={October},}
Copy
TY - JOUR
TI - One-Body 2-D Beam-Switching Butler Matrix with Waveguide Short-Slot 2-Plane Couplers
T2 - IEICE TRANSACTIONS on Electronics
SP - 884
EP - 892
AU - Dong-Hun KIM
AU - Jiro HIROKAWA
AU - Makoto ANDO
PY - 2017
DO - 10.1587/transele.E100.C.884
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E100-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2017
AB - A 42×42-way one-body 2-D beam-switching Butler matrix with waveguide short-slot 2-plane couplers is designed and fabricated in the 22GHz band. The one-body configuration using the commutativity and the overlapping of units allows reducing the size and loss in comparison with a cascade of matrices beam-switching for the horizontal and the vertical planes. It is achieved by replacing 2×2-way 1-plane couplers in the conventional block configuration for a Butler matrix with 22×22-way 2-plane couplers. The measured bandwidth is approximately 2% restricted by the frequency characteristics of the 2-plane couplers. In the radiation from the aperture array antenna of the 42 output ports, the 3.9dB-down coverage of 3-D solid angle by the sixteen beams is around 1.72 steradian which is same as 27.4% of hemisphere at the design frequency for the aperture spacing of 0.73×0.73 wavelength.
ER -
English
