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Quarter-wave Fresnel zone planar lens and antenna

Authors :
Hristo Hristov
M.H.A.J. Herben
Source :
IEEE Microwave and Guided Wave Letters, 5, 249-251. Institute of Electrical and Electronics Engineers
Publication Year :
1995
Publisher :
Institute of Electrical and Electronics Engineers (IEEE), 1995.

Abstract

A new variety of the Fresnel zone planar lens with enhanced focusing quality is proposed. Each full-wave zone is divided into four quarter-wave subzones, which are covered by dielectric rings having equal thickness but different permittivities. Based on this planar lens configuration, a transmissive-type Fresnel-zone antenna for DBS-reception with more than 50% aperture efficiency is developed and examined theoretically. >

Subjects

Subjects :
Materials science
Fresnel zone
business.industry
Aperture
Fresnel zone antenna
Astrophysics::Instrumentation and Methods for Astrophysics
General Engineering
Physics::Optics
General Physics and Astronomy
Zone plate
Fresnel equations
law.invention
Radiation pattern
Lens (optics)
Optics
law
Astrophysics::Earth and Planetary Astrophysics
business
Fresnel diffraction

Details

ISSN :
10518207
Volume :
5
Database :
OpenAIRE
Journal :
IEEE Microwave and Guided Wave Letters
Accession number :
edsair.doi.dedup.....be02c83537d5b64d20c3431e8080af96
Full Text :
https://doi.org/10.1109/75.401077
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