2018•Unpublished venueRequires access

Design of a Dual-band Feed System for S/X-band VLBI Observations

Moon‐Hee Chung

Abstract

The design of the dual-band feed system for 22-m geodetic VLBI radio telescope is described. The developed dual-band feed system allows simultaneous operation at S/X-band with dual-circular polarization. The dual-band feed horn comprises a coaxial waveguide horn for S-band and a dual-mode horn for X-band. A novel device for S-band circular polarizer was designed and manufactured for the dual-band feedhorn.

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Available abstract

Key concepts: Feed horn, Multi-band device, Very-long-baseline interferometry, Ka band, S band, Antenna feed, X band, Polarizer