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Updated: Jun 16, 2026

Application of High-speed Super-resolution SPEED Microscopy in Live Primary Cilium
Published on: January 16, 2018
Mapping speed for an array of corrugated horns
1California Institute of Technology MC367-17, Pasadena, California 91125, USA. spadin@caltech.edu
Abstract:
I address the choice of horn diameter for millimeter-wave array receivers with corrugated horns. For maximum point-source mapping speed, in both total power and polarization with typical receiver noise contributions and a close-packed horn array that fills the field of view, the optimum horn diameter is 1.6-1.7Flambda, where F is the focal ratio. A +/-25% change in horn diameter gives <10% degradation in mapping speed. Correlated noise from the cold stop, atmosphere, and cosmic microwave background has little effect on the mapping speed and optimum horn diameter.
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