Measured performance of a 230 GHz prototype focal-plane feedhorn array made by direct drilling of smooth-walled horns

• Main Authors: J. Leech, B. K. Tan, G. Yassin, P. Kittara, A. Jiralucksanawong, S. Wangsuya
• Other Authors: University of Oxford
• Format: Conference or Workshop Item
• Published: 2018
• Subjects: Computer Science; Earth and Planetary Sciences; Engineering; Physics and Astronomy
• Online Access: https://repository.li.mahidol.ac.th/handle/123456789/28986
• Institution: Mahidol University

We present the first, complete 230 GHz feedhorn array manufactured by direct drilling of smooth-walled horns into a single plate of aluminium. The horn design process, based on a genetic algorithm, is described and the fabrication process, via direct drilling using shaped drill bits, is presented. W...