| タイトル | Dual-Band Feed for a Microwave Reflector Antenna |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110015092 |
| 著者（英） | Reilly, Harry; Hoppe, Daniel |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 2005-08-01 |
| 言語 | eng |
| 内容記述 | A waveguide feed has been designed to provide specified illumination patterns for a dual-reflector antenna in two wavelength bands: 8 to 9 GHz and 30 to 40 GHz. The feed (see figure) has a coaxial configuration: A wider circular tube surrounds a narrower circular tube that serves as a waveguide for the signals in the 30-to-40-GHz band. The annular space between the narrower and the wider tube serves as a coaxial waveguide for the signals in the 8-to-9-GHz band. The nominal design frequencies of the outer and inner waveguides are 8.45 and 32 GHz, respectively. Each of the two waveguides is terminated in a component that is sized and shaped to help focus the radiation in its respective frequency band into the specified illumination pattern. For the outer waveguide, the beam-shaping termination is a corrugated horn; for the inner waveguide, the beam-shaping termination is a dielectric rod insert. |
| NASA分類 | Communications and Radar |
| レポートNO | NPO-40418 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/270384 |
