Journal Article10.1109/usnc-ursi52151.2023.10238072
Improved Reflectarray Feeds Using Gradient Index Lenses
Ryan J. Chaky,Eric B. Whiting,Colin A. Mussman,Galestan Mackertich-Sengerdy,Sawyer D. Campbell,Pingjuan L. Werner,Douglas H. Werner +6 more
- 23 Jul 2023
pp 1523-1524
TL;DR: Improved reflectarray feeds using gradient index lenses can significantly reduce peak field strength and improve power handling capability.
read more
Abstract: Reflectarray antenna (RA) systems are being increasingly used in many applications due to the advantages of their simple design and spatial feeding along with their capabilities for beam shaping and beam forming. However, like all aperture antennas, RAs are limited in the maximum gain they can achieve and power handling they can attain as a result of the feed illumination. By augmenting an RA horn feed with a GRadient INdex (GRIN) lens it is shown that it is possible to better distribute the feed's incident illumination across the surface while still maintaining the gain of the nominal system. Specifically, this work demonstrates that a GRIN lens designed for an offset fed RA at S Band operation can reduce the peak field strength by 17.6% and correspondingly improve the power handling capability by 47% relative to the nominal, no-lens system.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
References
•Book
Corrugated Horns for Microwave Antennas
P. J. B Clarricoats,A. D. Olver +1 more
- 30 Jun 1984
TL;DR: In this article, the authors describe the theory and design of corrugated horns and scalar feeds for microwave reflector antennas and explain why hybrid mode feeds are ideal feeds for reflectors.
685
Fast Optimization of Electromagnetic Design Problems Using the Covariance Matrix Adaptation Evolutionary Strategy
TL;DR: The results of the two electromagnetics design problems illustrate the ability of CMA-ES to provide a robust, fast and user-friendly alternative to more conventional optimization strategies such as PSO.
221
Reflectarray Antennas: Analysis, Design, Fabrication, and Measurement
Mohammad Reza Chaharmir,Jonathan Ethier,Jafar Shaker +2 more
- 01 Jan 2013
TL;DR: Reflectarray antennas refer to the class of radiating structures that are comprised of an array of radii, re-radiating the energy that is impinged on them from one or more radiating feeds that are located in free space.
125
Design of corrugated conical horns
TL;DR: In this paper, the effects of horn aperture size, slot width-to-pitch ratio and frequency on the cross-polarization of the radiation pattern are considered, as well as the range of slot parameters which can be used and the design of the slots near the throat of the horn to achieve a low VSWR for bandwidths of 1.5 to 1.
117