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Title: A 94 GHz RF electronics subsystem for the CloudSat cloud profiling radar
Authors: LaBelle, Remi C.
Girard, Ralph
Arbery, Graham
Keywords: Cloudsat
cloud profiling radar (CPR)
radio frequency electronics subsystem (RFES)
Issue Date: 29-Oct-2003
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2003
Citation: The Institute of Electrical and Electronics Engineers (IEEE) European Microwave Conference, Munich, Germany, October 6-10, 2003
Abstract: The 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 um GaAs high electron-mobility transistor (HEMT) technology and the Receiver low-noise amplifier (LNA) in 0.1 um InP HEMT technology.
Appears in Collections:JPL TRS 1992+

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