Axially displaced elliptical reflector antenna design with a switchable feeder for ultra‐wide band applications
| Autor: | Alper Caliskan, Ahmet Keskin Kenan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
High-gain antenna business.industry 020208 electrical & electronic engineering Bandwidth (signal processing) Ultra-wideband 020206 networking & telecommunications Ranging 02 engineering and technology Dielectric Radiation Impulse (physics) Optics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Axial symmetry |
| Zdroj: | IET Microwaves, Antennas & Propagation. 12:2141-2148 |
| ISSN: | 1751-8733 |
| DOI: | 10.1049/iet-map.2018.5228 |
| Popis: | This study presents a novel compact high gain dual reflector antenna design with a switchable feeder for ultra-wide band (UWB) applications. The design comprises a main parabola, a replaceable feeder antenna that is chosen depending on the requirements in a given situation, and an axially displaced elliptical sub-reflector. The functioning of two different feeder antennas with manual switching option, the partly dielectric loaded K-Vivaldi and double-ridged horn (RH), is discussed in this research study. When the K-Vivaldi is employed, the dual reflector antenna is more appropriate for impulse radiation with 33:1 operational bandwidth, ranging from 600 MHz to 20 GHz. The double-RH feeder antenna displays more efficiency than the K-Vivaldi one; however, the bandwidth in this case goes down to 12:1, ranging from 1.6 to 20 GHz. The sub-reflector, situated inside the main parabola aperture with onset type of feeders, reduces the depth of the structure to 16 cm. The antenna dimensions are 60 cm × 60 cm x 16 cm. Experiments have shown that the designed antennas display good efficiency and high gain performances in UWB operations. |
| Databáze: | OpenAIRE |
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