Instrument Information
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| IDENTIFIER |
urn:nasa:pds:context:instrument:dart.hga::1.2
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| NAME |
The High Gain Antenna (HGA) for DART
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| TYPE |
Radio Science
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| DESCRIPTION |
The DART HGA was a low-gain, high-efficienct Spiral Radial Line Slot Array that was gimballed. As the primary antenna of the DART s[acectaft. it provided the radio science data collected during the last 30 days of the mission. DART operated at the X-band DSN frequencies of 7.168 (Uplink) and 8.422 GHz (Downlink). There was approximately a 15% difference in frequency between uplink and downlink. The transponder delay (including RF propagation through waveguides, coax, etc.) was about 12650 nsec.
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| MODEL IDENTIFIER |
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| NAIF INSTRUMENT IDENTIFIER |
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| SERIAL NUMBER |
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| REFERENCES |
M. Bray, "A Spiral Radial Line Slot Array Antenna for NASA's Double Asteroid Redirection Test (DART)," 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Montreal, QC, Canada, 2020, pp. 379-380, doi: 10.1109/IEEECONF35879.2020.9330400.
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