https://scholars.lib.ntu.edu.tw/handle/123456789/580855
標題: | Development of 2-D generalized tri-focal Rotman lens beamforming network to excite conformal phased arrays of antennas for general near/far-field multi-beam radiations | 作者: | Chou H.-T Torrungrueng D. HSI-TSENG CHOU |
關鍵字: | Antenna phased arrays; Beamforming; Dielectric materials; Directional patterns (antenna); Lens antennas; Multibeam antennas; Closed form solutions; Conformal phased arrays; Dielectric substrates; Excitation schemes; Production characteristics; Radiation characteristics; Simulations and measurements; Two Dimensional (2 D); Beam forming networks | 公開日期: | 2021 | 卷: | 9 | 起(迄)頁: | 49176-49188 | 來源出版物: | IEEE Access | 摘要: | In this paper, we present a general closed-form solution of trifocal Rotman lens beamforming network (TFRL-BFN) design to excite a conformal phased array of antennas for multibeam radiations. This TFRL-BFN is a two-dimensional (2-D) configuration and is realizable in a dielectric substrate sandwiched by a pair of metal parallel-plates. In the development, instead of employing the geometric optic (GO) ray paths external to the Rotman lens to form an equal-phase wavefront by equal path lengths for directional beam radiation, we consider the phase need of antenna array excitation as the design target of TFRL-BFN. As a result, the TFRL-BFN concept can be extended to treat conformal arrays of antennas with well-planned excitation schemes, ranging from conventional near- and far-field focus multibeam radiations, as well as multibeam with shaped patterns. Basic theoretical concepts and foundations are presented with simulation and measurement examples to demonstrate the phase production characteristics of this TFRL-BFN. When used to feed a conformal array of antennas, the resulting radiation characteristics validate this TFRL-BFN generalization concept’s feasibility. ? 2021 Copernicus GmbH. All rights reserved. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103241707&doi=10.1109%2fACCESS.2021.3068831&partnerID=40&md5=64dae668e5535b05247f7984d82bfa1b https://scholars.lib.ntu.edu.tw/handle/123456789/580855 |
ISSN: | 21693536 | DOI: | 10.1109/ACCESS.2021.3068831 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。