14 December 1992 Off-axis-fed fresnel zone plate antenna
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Proceedings Volume 1929, 17th International Conference on Infrared and Millimeter Waves; 19293W (1992) https://doi.org/10.1117/12.2298257
Event: 17th International Conference on Infrared and Millimeter Waves, 1992, Pasadena, CA, United States
Abstract
Phase-correcting zone plates may be used with off-axis feeds. For angles up to about 20° off-set, the performance is well-behaved, with minor degradation. The design is given for a transmission type and an equivalent reflecting version having a 17° feed offset. An investigation has been carried out for angles larger than 20°, apd the results indicate that the annular zones on the zone plate should not be circular. A ray- tracing analysis shows that the zones need to be egg-shaped, and these results will be described. The analysis has been completed for both transmission or reflection-type zone plates.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
James C. Wiltse, "Off-axis-fed fresnel zone plate antenna", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19293W (14 December 1992); doi: 10.1117/12.2298257; https://doi.org/10.1117/12.2298257
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