NDLI: Progress in low-power digital microwave radiometer technologies

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Progress in low-power digital microwave radiometer technologies

Content Provider	NASA Technical Reports Server (NTRS)
Author	Piepmeier, Jeffrey R. Kim, Edward J.
Copyright Year	2004
Description	Three component technologies were combined into a digital correlation microwave radiometer. The radiometer comprises a dual-channel X-band superheterodyne receiver, low-power high-speed cross-correlator (HSCC), three-level ADCs, and a correlated noise source (CNS). The HSCC dissipates 10 mW and operates at 500 MHz clock speed. The ADCs are implemented using ECL components and dissipate more power than desired. Thus, a low-power ADC development is underway. The new ADCs arc predicted to dissipated less than 200 mW and operate at 1 GSps with 1.5 GHz of input bandwidth. The CNS provides different input correlation values for calibration of the radiometer. The correlation channel had a null offset of 0.0008. Test results indicate that the correlation channel can be calibrated with 0.09% error in gain.
File Size	6434581
Page Count	6
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040084633
Archival Resource Key	ark:/13960/t59d1wv9s
Language	English
Publisher Date	2004-05-10
Access Restriction	Open
Subject Keyword	Electronics And Electrical Engineering Microwave Radiometers Energy Dissipation Digital Electronics Superheterodyne Receivers High Speed Waveguides Superhigh Frequencies Radio Receivers Chips Electronics Data Correlation Analog To Digital Converters Technology Utilization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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