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Microwave integrated circuit radiometer front-ends for the Push Broom Microwave RadiometerMicrowave integrated circuit front-ends for the L-band, S-band and C-band stepped frequency null-balanced noise-injection Dicke-switched radiometer to be installed in the NASA Langley airborne prototype Push Broom Microwave Radiometer (PBMR) are described. These front-ends were developed for the fixed frequency of 1.413 GHz and the variable frequencies of 1.8-2.8 GHz and 3.8-5.8 GHz. Measurements of the noise temperature of these units were made at 55.8 C, and the results of these tests are given. While the overall performance was reasonable, improvements need to be made in circuit losses and noise temperatures, which in the case of the C-band were from 1000 to 1850 K instead of the 500 K specified. Further development of the prototypes is underway to improve performance and extend the frequency range.
Document ID
19820059722
Document Type
Conference Paper
Authors
Harrington, R. F. (NASA Langley Research Center Hampton, VA, United States)
Hearn, C. P. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1982
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Meeting Information
Government Microcircuit Applications Conference(Orlando, FL)
Distribution Limits
Public
Copyright
Other