What question did this study set out to answer?

To describe the focusing and frequency-filtering characteristics of phase-correcting Fresnel zone plates in the millimeter-wave band as lightweight substitutes for lenses.

December 1, 1987IEEE Transactions on Microwave Theory and Techniques

Millimeter-Wave Characteristics of Phase-Correcting Fresnel Zone Plates

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Authors

DBD.N. BlackGeorgia Institute of Technology JWJames C. WiltseLockheed Martin (United States)

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Implication

Experimental evaluation demonstrates efficient millimeter-wave focusing in phase-correcting zone plates, indicating lower weight and absorption loss than conventional lenses.

Key Points

To describe the focusing and frequency-filtering characteristics of phase-correcting Fresnel zone plates in the millimeter-wave band as lightweight substitutes for lenses.
Evaluated two zone plate designs: a single low-loss dielectric disk with cut concentric annular grooves and a multi-dielectric planar lens of uniform thickness.
Derived analytical equations to calculate far-field radiation patterns and produced design curves.
Conducted experimental measurements to validate imaging and focusing performance across both zone plate configurations.
Demonstrated effective millimeter-wave focusing, imaging, and frequency filtering using phase-correcting zone plates.
Produced a flat disk planar lens design using concentric rings of alternating dielectric materials with constant physical thickness.
Achieved reduced absorption loss, lower weight, and simpler construction relative to conventional curved lenses.

Cite This Study

Black et al. (1987) studied this question.

synapsesocial.com/papers/6a8d0b8eb78e02efa68e4e44 https://doi.org/10.1109/tmtt.1987.1133826

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Implication

Experimental evaluation demonstrates efficient millimeter-wave focusing in phase-correcting zone plates, indicating lower weight and absorption loss than conventional lenses.

Millimeter-Wave Characteristics of Phase-Correcting Fresnel Zone Plates

Discussion

Member takes

Implication

Key Points

Cite This Study

Millimeter-Wave Characteristics of Phase-Correcting Fresnel Zone Plates

Discussion

Member takes

Implication

Key Points

Cite This Study

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