| CPC H01Q 11/08 (2013.01) [H01Q 1/38 (2013.01); H01Q 13/02 (2013.01)] | 5 Claims | 

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               1. A device comprising: input and output coaxial horn antennas coupled with a self-assembled helical slow-wave structure cradled in a trench in a silicon-on-insulator wafer. 
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