RF optics study for DSS-43 ultracone implementation

Details RF optics study for DSS-43 ultracone implementation RF optics study for DSS-43 ultracone implementation

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994tdar.nasa..268l&link_type=abstract

In its The Telecommunications and Data Acquisition Report p 268-281 (SEE N95-17279 04-32)

Astronomy and Astrophysics

Astronomy

Antenna Design, Feed Systems, Galileo Project, Horn Antennas, Radio Astronomy, Signal Processing, Spacecraft Tracking, Very Long Base Interferometry, Contingency, Cross Polarization, Holography, Shadows, Superhigh Frequencies, Ultrahigh Frequencies

Scientific paper

The Ultracone feed system will be implemented on DSS 43 to support the S-band (2.3 GHz) Galileo contingency mission. The feed system will be installed in the host country's cone, which is normally used for radio astronomy, VLBI, and holography. The design must retain existing radio-astronomy capabilities, which could be impaired by shadowing from the large S-band feed horn. Computer calculations were completed to estimate system performance and shadowing effects for various configurations of the host country's cone feed systems. Also, the DSS-43 system performance using higher gain S-band horns was analyzed. A new S-band horn design with improved return loss and cross-polarization characteristics is presented.

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