## Abstract A novel reflector‐backed Fresnel zone plate antenna (FZPA) is presented. The reflector is positioned at the aperture of the feed antenna such that the radiation that was reflected back off the metal zones of the FZPA gets reradiated instead of being lost. This structure enhances the dir
Fresnel zone plate antenna with hexagonal-cut zones
✍ Scribed by S. M. Stout-Grandy; A. Petosa; I. V. Minin; O. V. Minin; J. S. Wight
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 308 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A novel Fresnel zone plate antenna (FZPA) with hexagonal‐cut zones is presented. This new structure was simulated at 30 GHz using a finite‐difference time‐domain software to study its gain and sidelobe levels in relation to the standard circular FZPA and the hexagonal FZPA. Several prototypes were built and tested to verify the simulations. It was found that the FZPA with rotated alternating hexagonal‐cut zones provides the ability to control the shape and location of the sidelobes while still maintaining the benefits of the hexagonal shape in terms of array packing. Also, this new structure has an improved sidelobe level over the standard version. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 672–676, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23183
📜 SIMILAR VOLUMES
## Abstract This article presents low‐profile configurations of the Fresnel zone plate antenna at Ka‐band. The investigation involved progressively reducing the focal distance of the antenna through simulations and observing the effect on the directivity, radiation patterns, and aperture efficiency
In this study, a thin resisti¨e sheet is wrapped around a ( ) three-layered skin, fat, muscle elliptical model, and the shielding effect is calculated using the method of moments which applies the equi¨alent resisti¨e approximation.
## Abstract The performance of Fresnel zone plates having polygonal boundaries between zones has been studied for polygons with a low number of sides. An optimized polygonal shape has been analytically defined by minimizing the mismatched area between the circular and the polygonal pseudo‐Fresnel z
## Abstract An improved zoning rule is presented for designing a square Fresnel zone plate lens (FZPL). This new rule results in a higher gain when the FZPL is used as an antenna element or can enhance the focusing properties of the square FZPL when used to collimate an incident plane wave. The der