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A 94 GHz RF Electronics Subsystem for the CloudSat Cloud Profiling RadarThe CloudSat spacecraft, scheduled for launch in 2004, will carry the 94 GHz Cloud Profiling Radar (CPR) instrument. The design, assembly and test of the flight Radio Frequency Electronics Subsystem (RFES) for this instrument has been completed and is presented here. The RFES consists of an Upconverter (which includes an Exciter and two Drive Amplifiers (DA's)), a Receiver, and a Transmitter Calibrator assembly. Some key performance parameters of the RFES are as follows: dual 100 mW pulse-modulated drive outputs at 94 GHz, overall Receiver noise figure < 5.0 dB, a highly stable W-band noise source to provide knowledge accuracy of Receiver gain of < 0.4 dB over the 2 year mission life, and a W-band peak power detector to monitor the transmitter output power to within 0.5 dB over life. Some recent monolithic microwave integrated circuit (MMIC) designs were utilized which implement the DA's in 0.1 micron GaAs high electron-mobility transistor (HEMT) technology and the Receiver low-noise amplifier (LNA) in 0.1 micron InP HEMT technology.
Document ID
20070034971
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
LaBelle, Remi C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Girard, Ralph
(Canadian Space Agency Saint Hubert, Quebec, Canada)
Arbery, Graham
(COM DEV Ltd. Cambridge, Ontario, Canada)
Date Acquired
August 24, 2013
Publication Date
October 29, 2003
Subject Category
Communications And Radar
Meeting Information
Meeting: The Institute of Electrical and Electronics Engineers (IEEE) European Microwave Conference
Location: Munich
Country: Germany
Start Date: October 6, 2003
End Date: October 10, 2003
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
radio frequency electronics subsystem (RFES)
cloud profiling radar (CPR)
Cloudsat

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