講演抄録/キーワード |
講演名 |
2017-11-24 11:10
Beam Scanning of Conformal Array with Arbitrary Shaped Surface ○Hirokazu Kobayashi・Takeru Oka(OIT)・Shun-ichi Takaoka(MWF) SANE2017-83 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
In this paper, we discuss radiation characteristics from conformal array with arbitrary shaped surface.
In order to scan a beam of array antenna with the surface, it is necessary to calculate optical path-length from each antenna element to an aperture plane, so called 'equi-phase front', which is perpendicular to scanning beam direction. Furthermore, normal vectors and polarized direction of each element are needed.
For these calculation, we propose a new algorithm which can calculate the path-length (driving phase input to each element) by employing the direction-cosine relation between the beam direction and the each element. Using this direction-cosine, the path-length can be easily and generally obtained for arbitrary shaped conformal array.
On the other hand, if shape of array surface is expressed by polynomial equation, normal vector and polarized direction of element antenna can be analytically determined. Polarization loss of the element and shadowing procedure, which depend on beam direction, can also be calculated.
Taking these into consideration, we show radiation characteristics of curved surface array by polynomial expression. The calculation is automatically carried out through MATLAB GUI, in which we can determine operating frequency, pitch of elements, beam direction, selection of flat or curved rectangular patch for element, its size, dielectric permittivity, and array shape by inputting polynomial coefficients. |
キーワード |
(和) |
/ / / / / / / |
(英) |
conformal array / polynomial curved surface / beam scanning / beam scanning / direction-cosine / array-factor / MATLAB GUI / |
文献情報 |
信学技報, vol. 117, no. 321, SANE2017-83, pp. 105-110, 2017年11月. |
資料番号 |
SANE2017-83 |
発行日 |
2017-11-16 (SANE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SANE2017-83 |
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