학술논문
The optimization of fresnel zone plates for use in focused-beam measurement systems
Document Type
Conference
Author
Source
2009 IEEE Antennas and Propagation Society International Symposium Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE. :1-4 Jun, 2009
Subject
Language
ISSN
1522-3965
1947-1491
1947-1491
Abstract
Fresnel zone plates have been used as replacements for doubly-hyperbolic lenses in free-space, focused-beam systems to measure the electrical properties of materials [1]. These zone plates were designed using the traditional method for determining the profile of a zone plate, which is based on optical, ray-tracing principles [2]. In this work, a non-traditional, optimization-based design methodology featuring the genetic algorithm will be explored to determine if the performance of a zone plate can be improved for the focused-beam application. Results will be presented that compare the optimized design to the traditional zone plate and to a doubly-hyperbolic lens.