Compact radiometric microwave calibrator

Journal Article · Thu Jun 15 00:00:00 EDT 2006 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2209960· OSTI ID:20853300

Fixsen, D J; Wollack, E J; Kogut, A; Limon, M; Mirel, P; Singal, J; Fixsen, S M ^[1]

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1. SSAI Goddard Spaceflight Center, Greenbelt, Maryland 20771 (United States)

The calibration methods for the ARCADE II instrument are described and the accuracy estimated. The Steelcast coated aluminum cones which comprise the calibrator have a low reflection while maintaining 94% of the absorber volume within 5 mK of the base temperature (modeled). The calibrator demonstrates an absorber with the active part less than one wavelength thick and only marginally larger than the mouth of the largest horn and yet black (less than -40 dB or 0.01% reflection) over five octaves in frequency.

• OSTI ID: 20853300
• Journal Information: Review of Scientific Instruments, Vol. 77, Issue 6; Other Information: DOI: 10.1063/1.2209960; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCURACY
ALUMINIUM
ANTENNAS
CALIBRATION
CONES
MICROWAVE RADIATION
RADIOMETERS
REFLECTION
WAVELENGTHS