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Performance characteristics of phase-correcting Fresnel zone plates

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2 Author(s)
Garrett, J.E. ; Georgia Tech. Res. Inst., Atlanta, GA, USA ; Wiltse, J.C.

Specific measured and/or theoretical characteristics are given for phase-correcting zone plate antennas. Parameters described include off-axis performance, axial intensity dependence, efficiency, distortion and aberrations, and bandwidth. Measured data are summarized for 10, 94, and 140 GHz. This type of zone plate has the advantages (compared to a lens) of reduced loss, weight, volume, cost, and planar construction, with similar diffraction-limited beamwidth and major-sidelobe performance, but lower efficiency.<>

Published in:

Microwave Symposium Digest, 1990., IEEE MTT-S International

Date of Conference:

8-10 May 1990

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