Principle
THE LUNEBERG LENS PRINCIPLE |
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The Luneberg lens is a dielectric sphere with a permittivity varying with the distance from the center. This property allows a good focalisation of the microwave beams in a focal point located at the peripheral of the lens. The lens can then be used as a reflector (with a metallization) or as emission or reception antenna (with one or more feeds). |
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THE ADVANTAGES OF A LUNEBERG REFLECTOR•Considerable increase in RCS (Radar Cross Section) for any systems with little or no RCS•Homogeneous response within a wide angleTHE ADVANTAGES OF A LUNEBERG ANTENNA• Reduced size |
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APPLICATIONS
The Luneberg lens is used for two types of applications: - reflector or passive radar reflector The electromagnetic and mechanical properties meet the needs of military and civilian applications. • Military : radar detection of target• Civilian : – port and airport beaconing |
![]() MICROWAVE PATH IN THE LUNEBERG LENSES |
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SHAPES :
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EXEMPLES
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