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This document summarizes research on 3D printed gradient index (GRIN) dielectric loaded double ridged horn antennas. The antennas were designed to improve sidelobe levels and beam symmetry while maintaining good impedance match and radiation efficiency over more than an octave bandwidth from 7.5 to 18GHz. Results showed the GRIN loaded horns reduced sidelobe levels by around 15dB across a 2.4:1 bandwidth. This wideband performance with low fabrication complexity was enabled by the use of 3D printing to prod

Author

Rui Vaz Almeida

Language

EN