Multibeam Radiations From Circular Periodic Array of Vivaldi Antennas Excited by an Integrated 2-D Luneburg Lens Beamforming Network
| Autor: | Hsi-Tseng Chou, Shang-Che Chang, Hao-Ju Huang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Beamforming business.industry Aperture 020206 networking & telecommunications 02 engineering and technology Luneburg lens Antenna array Circular buffer Optics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Antenna (radio) business Excitation Beam (structure) Computer Science::Information Theory |
| Zdroj: | IEEE Antennas and Wireless Propagation Letters. 19:1486-1490 |
| ISSN: | 1548-5757 1536-1225 |
| DOI: | 10.1109/lawp.2020.3006561 |
| Popis: | An antenna array is developed to radiate angularly distributed multibeams. The proposed antenna utilizes a 2-D Luneburg lens as a beamforming network (LL-BFN) to produce rotationally symmetric excitations. The concept is to replace an equivalent circular aperture of Luneburg lens by a circular array of excitation output ports. Thus, in addition to the beam selection ports, antenna excitation ports are also established on the LL-BFN to extract the required phases to feed an external circular array of antennas. As a result, more flexible radiation characteristics can be achieved by the circular array. This concept is demonstrated by both simulation and measurement results of an antenna prototype to validate the feasibility. |
| Databáze: | OpenAIRE |
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