A Broadband Antenna Reflection Range Using Genetic Algorithms to Determine Element Weighting

摘要

Properly designed elevated antenna ranges, that are to be used on aircraft sized structures, at VHF and UHF frequencies, are prohibitively large. Conventional ground reflection ranges can measure only one frequency at a time because the source antenna height must be set for each frequency. This paper describes a broadband antenna ground reflection range that has been designed for the purpose of making antenna pattern measurements at arbitrary frequencies between 30 MHz and 400 MHz on aircraft sized vehicles. This design uses multiple transmit antenna elements with the complex weighted excitation determined by the use of genetic algorithms.