Jamie LeechBoon Kok TanGhassan YassinPhichet KittaraSujint WangsuyaUniversity of OxfordMahidol University2018-06-112018-06-112012-01-01IEEE Transactions on Terahertz Science and Technology. Vol.2, No.1 (2012), 61-702156342X2-s2.0-84856372222https://repository.li.mahidol.ac.th/handle/123456789/14181In previous work, we have described novel smooth-walled multiple flare-angle horns designed using a genetic algorithm. A key feature of these horns is that they can be manufactured very rapidly and cheaply in large numbers, by repeated direct drilling into a single plate of aluminum using a shaped machine tool. The rapid manufacturing technique will enable the construction of very low cost focal-plane arrays, offering an alternative to conventional electroformed corrugated horn arrays. © 2011 IEEE.Mahidol UniversityEngineeringPhysics and AstronomyConference PaperSCOPUS10.1109/TTHZ.2011.2177701