Radiation Pattern Analysis of an Offset Cylindrical Reflector Antenna by Boundary Element Method

Katsumasa MIYATA; Ichiro FUKAI

Radiation Pattern Analysis of an Offset Cylindrical Reflector Antenna by Boundary Element Method

Katsumasa MIYATA, Ichiro FUKAI

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Radiation patterns of an offset cylindrical reflector antenna are computed numerically by BEM (boundary element method), and compared with the corresponding measured patterns in order to seek the validity of the approach to the radiation pattern analysis for the whole angles without paying any attention to the combination of PO (physical optics) and GTD (geometrical theory od diffraction). First, a parallel-plate small horn antenna to be used as the primary feed for the offset reflector is analysed for the frequency range of 8 GHz to 12 GHz, and good agreement between the BEM and the measured radiation patterns (amplitude) is ascertained for the levels from 0 dB down to about 20 dB. Next, a small offset reflector antenna is manufactured, where the aperture width, the focal length, the offset angle, and the aperture angle are chosen 432 mm, 200 mm, 65and 40, respectively. It is shwon that the computed patterns by BEM (H-plane) is well verified by the measured data from the mainbeam to wide-angle regions, proving the validity of the approach to the field analysis of two-dimensional reflector antennas.

Publication: IEICE TRANSACTIONS on transactions Vol.E70-E No.8 pp.761-767

Publication Date: 1987/08/25

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Type of Manuscript: PAPER

Category: Antennas and Propagation

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Katsumasa MIYATA
Ichiro FUKAI

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Katsumasa MIYATA, Ichiro FUKAI, "Radiation Pattern Analysis of an Offset Cylindrical Reflector Antenna by Boundary Element Method" in IEICE TRANSACTIONS on transactions, vol. E70-E, no. 8, pp. 761-767, August 1987, doi: .
Abstract: Radiation patterns of an offset cylindrical reflector antenna are computed numerically by BEM (boundary element method), and compared with the corresponding measured patterns in order to seek the validity of the approach to the radiation pattern analysis for the whole angles without paying any attention to the combination of PO (physical optics) and GTD (geometrical theory od diffraction). First, a parallel-plate small horn antenna to be used as the primary feed for the offset reflector is analysed for the frequency range of 8 GHz to 12 GHz, and good agreement between the BEM and the measured radiation patterns (amplitude) is ascertained for the levels from 0 dB down to about 20 dB. Next, a small offset reflector antenna is manufactured, where the aperture width, the focal length, the offset angle, and the aperture angle are chosen 432 mm, 200 mm, 65and 40, respectively. It is shwon that the computed patterns by BEM (H-plane) is well verified by the measured data from the mainbeam to wide-angle regions, proving the validity of the approach to the field analysis of two-dimensional reflector antennas.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e70-e_8_761/_p

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@ARTICLE{e70-e_8_761,
author={Katsumasa MIYATA, Ichiro FUKAI, },
journal={IEICE TRANSACTIONS on transactions},
title={Radiation Pattern Analysis of an Offset Cylindrical Reflector Antenna by Boundary Element Method},
year={1987},
volume={E70-E},
number={8},
pages={761-767},
abstract={Radiation patterns of an offset cylindrical reflector antenna are computed numerically by BEM (boundary element method), and compared with the corresponding measured patterns in order to seek the validity of the approach to the radiation pattern analysis for the whole angles without paying any attention to the combination of PO (physical optics) and GTD (geometrical theory od diffraction). First, a parallel-plate small horn antenna to be used as the primary feed for the offset reflector is analysed for the frequency range of 8 GHz to 12 GHz, and good agreement between the BEM and the measured radiation patterns (amplitude) is ascertained for the levels from 0 dB down to about 20 dB. Next, a small offset reflector antenna is manufactured, where the aperture width, the focal length, the offset angle, and the aperture angle are chosen 432 mm, 200 mm, 65and 40, respectively. It is shwon that the computed patterns by BEM (H-plane) is well verified by the measured data from the mainbeam to wide-angle regions, proving the validity of the approach to the field analysis of two-dimensional reflector antennas.},
keywords={},
doi={},
ISSN={},
month={August},}

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TY - JOUR
TI - Radiation Pattern Analysis of an Offset Cylindrical Reflector Antenna by Boundary Element Method
T2 - IEICE TRANSACTIONS on transactions
SP - 761
EP - 767
AU - Katsumasa MIYATA
AU - Ichiro FUKAI
PY - 1987
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E70-E
IS - 8
JA - IEICE TRANSACTIONS on transactions
Y1 - August 1987
AB - Radiation patterns of an offset cylindrical reflector antenna are computed numerically by BEM (boundary element method), and compared with the corresponding measured patterns in order to seek the validity of the approach to the radiation pattern analysis for the whole angles without paying any attention to the combination of PO (physical optics) and GTD (geometrical theory od diffraction). First, a parallel-plate small horn antenna to be used as the primary feed for the offset reflector is analysed for the frequency range of 8 GHz to 12 GHz, and good agreement between the BEM and the measured radiation patterns (amplitude) is ascertained for the levels from 0 dB down to about 20 dB. Next, a small offset reflector antenna is manufactured, where the aperture width, the focal length, the offset angle, and the aperture angle are chosen 432 mm, 200 mm, 65and 40, respectively. It is shwon that the computed patterns by BEM (H-plane) is well verified by the measured data from the mainbeam to wide-angle regions, proving the validity of the approach to the field analysis of two-dimensional reflector antennas.
ER -