SAT- 1 National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute...
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SAT- 1 National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology 2014-01-31 Mars CubeSat/NanoSat Workshop
SAT- 1 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. Mechanical Development of a Mesh Ka-band Parabolic
Deployable Antenna (KaPDA) for Interplanetary CubeSat
Communications Jonathan Sauder 11/21/14
Slide 2
SAT- 2 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. The KaPDA Team Role:Name:Group: PI Mark Thomson 355
Co-I Tim Barrett USC/ISI Co-I Richard Hodges 337 Co-I Pezhman
Zarifian 312 CogEJonathan Sauder355 RF AnalysisYahya
Rahmat-SamiiUCLA RF Analysis Nacer Chahat337
Slide 3
SAT- 3 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. KaPDA Overview Challenge Data rates are a limiting
factor on CubeSat missions beyond LEO Objective High-rate CubeSat
communications with DSN Over 100x increase over state-of-the art
data rate requires a Ka-band deployable high-gain antenna (HGA)
Would provide over a 10,000x increase over a X-band patch antenna
Solution A low-cost deployable HGA stowing in ~1.5U 42 dBi goal at
34 GHz for downlink to DSN Ka-band High Gain Antenna at Mars Range
(AU) Data Rate (bps) L1.01AU Moon.0026A U X-band, 1w, patch antenna
Ka-band, 1w, deployable dish S-band, 1w, deployable dish Data Rate
Comparison Artists Concept
Slide 4
SAT- 4 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. Existing CubeSat Antennas Existing parabolic and
parabolic like antennas Goer-wrap composite reflector Reflector
transformed from the CubeSat body Inflatable cone/cylinder shaped
reflector Reflectarray Mesh Antennas All are designed for S-band
operation Except for reflectarray Ka-band provides data rate
advantages But requires greater surface accuracy Mesh design was
the most practical to upgrade Specifically ANEAS parabolic
deployable antenna USC/ISI launched ANEAS in Sept. 2012
Architecture fits CubeSat form factor Required complete redesign
for Ka-band operation Existing Antenna Concepts
Slide 5
SAT- 5 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. General Architecture Key KaPDA Components KaPDA
Stowed KaPDA Deployed Antenna configuration drove architecture
Cassegrainian design was improved for gain Similar folding rib
geometry to ANEAS Required additional sub-reflector, horn, and
waveguide
Slide 6
SAT- 6 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. Deployment Design and Sequence
Slide 7
SAT- 7 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. KaPDA Parameters and Progress Parameters: 0.5 meter
dish stowing within 1.5U RF analysis shows ~43 dB of gain before
manufacturing tolerances Operations frequencies of 34.2 GHz to 34.7
GHz and 31.8 GHz to 32.3 GHz Alternative configuration operates at
37.5 GHz for radar applications Progress: Conceptual design has
been completed RF and structural analysis completed Next Steps
Deployment breadboard & static RF model Engineering Model RF
verification of engineering model Expected Completion end of 2015
for 0.5 meter Deliverable: flight-validated engineering model Table
of Design Parameters Design Stretch Goal Diameter (m) 0.50.75
Freqeuncy (GHz) 3437.5 Gain (dBi) 42 46.4 Efficiency (%) 50 Size
(U) 1.52.8 Mass (Kg) 1.02.0 Artists Concept
Slide 8
SAT- 8 National Aeronautics and Space Administration Jet
Propulsion Laboratory California Institute of Technology 2014-01-31
Mars CubeSat/NanoSat Workshop 2014 Nov. 21-22, Pasadena, CA 2014
California Institute of Technology. Government sponsorship
acknowledged. Summary KaPDA stands to enable opportunities for a
host of new Cubesat missions by allowing high data rate
communication which would allow venturing further into deep space,
including Mars missions. Artists Concept