FOCUSING PROPERTIES OF ULTRA WIDEBAND TRANSIENT ARRAYS
| Autor: | Ahmed A. Kishk, Shaya Karimkashi, Darko Kajfez, Guifu Zhang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Coupling
Physics Directional antenna business.industry Antenna aperture Astrophysics::Instrumentation and Methods for Astrophysics Ultra-wideband Condensed Matter Physics Electronic Optical and Magnetic Materials Optics Radiator (engine cooling) Transient (oscillation) Electrical and Electronic Engineering Antenna (radio) Focus (optics) business Computer Science::Information Theory |
| Zdroj: | Progress In Electromagnetics Research B. 56:387-407 |
| ISSN: | 1937-6472 |
| DOI: | 10.2528/pierb13080609 |
| Popis: | Some new focusing properties of time-domain ultra wide band (UWB) focusing array antennas are presented. The large current radiator (LCR) is considered as the UWB antenna element. Each LCR is replaced by a set of inflnitesimal dipoles modeling both the near fleld and the far fleld patterns of the antenna element, as well as the coupling between the elements. Several antenna arrays with difierent sizes and numbers of elements are modeled. It is shown that similar to narrow band antennas, the actual maximum fleld region shifts from the intended focus region towards the antenna aperture. |
| Databáze: | OpenAIRE |
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