Publikace detail

REFLECTOR ANTENNAS

Autoři: Schejbal Vladimír

Rok: 2021

Druh publikace: kapitola v odborné knize

Název zdroje: Wiley Encyclopedia of Electrical and Electronics Engineering

Název nakladatele: John Wiley & Sons

Místo vydání: Bognor Regis

Strana od-do: 1-16

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	REFLEKTOROVÉ ANTÉNY	Reflektorové antény stále představují jedny z nejlepších řešení cenově dostupných anténních systémů s vysokými zisky a parametry. Proto se používají v různých oblastech elektrotechniky od telekomunikací a radarů k průzkumu vesmíru a radioastronimie.	Reflektorové antény; anténní teorie; anténní techniky; konstrukce; vyzařovací charakteristiky antén.
eng	REFLECTOR ANTENNAS	Reflector antennas have been still one of the best solutions to requirements for cost effective, high gain, high performance antenna systems and therefore have been used in various areas of electrical engineering, ranging from telecommunications and radars to deep-space exploration and radio astronomy. Consequently, the majority of radar, ground station and spacecraft high gain antennas are reflector antennas. Different types are used such as plane, corner, singly and doubly curved, and single and multiple reflectors. That depend on applications, frequencies, polarizations, resulting radiation patterns, etc. Basic theoretical principles, analytical methods, numerical simulations, experimental results and various practical issues, which can facilitate the design of reflector antennas, are described. The more general design uses geometrical and physical optics. The generalized diffraction synthesis technique can be utilized to produce various radiation patterns such as pencil-beams and contoured beams, and to enhance the radiation characteristics of an existing canonical or distorted system. The reliability and accuracy of analytical/numerical techniques have allowed employment of commercial or customized computer programs in the performance evaluation and design of reflector antennas considering various parameters such as sidelobe levels at far-angular regions and cross-polarization control.	Reflector antennas; antenna theory; analysis techniques; design; antenna radiation patterns;

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