A Note On Noise Factor Measurement
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A Note On Noise Factor Measurement
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Author : Wave Propagation Laboratory
language : en
Publisher:
Release Date : 1969
A Note On Noise Factor Measurement written by Wave Propagation Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Atmospheric radio refractivity categories.
The definition of noise factor, F, is reviewed and the mathematical bases for several methods of measuring noise factor are presented. Error analyses are given to determine: (1) the noise source temperatures, which minimize the noise factor measurement error, (2) an analytic expression for the expected error in F as measured by the CW methods, and (3) an analytic expression for the expected error in F as measured by the Y-Factor Method. A hypothetical receiver (of assumed characteristics) is used as a comparative example to elevate the errors to be expected in F as measured by the CW Method and by the Y-Factor Method. The importance of bandwidth as a criterion of receiver performance is stressed. The effect on the measured F produced by a change in receiver gain-bandwidth produced by a change in received gain-bandwidth produced by a change is receiver gain-bandwidth produce is considered briefly. A preliminary calculation of the source temperatures actually seen by the receiver input completes the report. The appendix is a procedural outline for measuring a receiver's noise factor by: (1) automatic noise factor meter (ANFM), (2) CW Method, and (3) Y-Factor Methods. This outline indicates the characteristics required of the test equipment and tells how to obtain the necessary data.
A Note On Noise Factor Measurement
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Author : E. G. Hildner
language : en
Publisher:
Release Date : 1969
A Note On Noise Factor Measurement written by E. G. Hildner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Radio measurements categories.
The Measurement Of Noise Performance Factors
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Author : M. G. Arthur
language : en
Publisher:
Release Date : 1974
The Measurement Of Noise Performance Factors written by M. G. Arthur and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Noise categories.
The metrology guide provides the basis for critical comparisons among seven measurement techniques for average noise factor and effective input noise temperature. The techniques that are described, discussed, and analyzed include the (1) Y-Factor, (2) 3-dB, (3) Automatic, (4) Gain Control, (5) CW, (6) Tangential, and (7) Cmparison Techniques. The analyses yield working equations and error equations by which accuracy capabilities are compared. Each technique is also analyzed for (a) frequency range for best measurement results, (b) special instrumentation requirements, (c) speed and convenience, (d) operator skill required, and (e) special measurement problems. General instrumentation requirements and practical measurement problems are discussed for the benefit of the non-expert metrologist. (Modified author abstract).
Nbs Technical Note
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Author :
language : en
Publisher:
Release Date : 1959
Nbs Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Physical instruments categories.
Considerations For The Precise Measurement Of Amplifier Noise
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Author : D. F. Wait
language : en
Publisher:
Release Date : 1973
Considerations For The Precise Measurement Of Amplifier Noise written by D. F. Wait and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Amplifiers (Electronics) categories.
Noise In Measurements
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Author : Aldert Van der Ziel
language : en
Publisher: John Wiley & Sons
Release Date : 1976
Noise In Measurements written by Aldert Van der Ziel and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Mathematics categories.
Noise
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Author : Aldert Van der Ziel
language : en
Publisher: Prentice Hall
Release Date : 1970
Noise written by Aldert Van der Ziel and has been published by Prentice Hall this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Technology & Engineering categories.
Nbs Technical Note
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Author :
language : en
Publisher:
Release Date : 1974-06
Nbs Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974-06 with Physical instruments categories.
Modern Rf And Microwave Measurement Techniques
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Author : Valeria Teppati
language : en
Publisher: Cambridge University Press
Release Date : 2013-06-20
Modern Rf And Microwave Measurement Techniques written by Valeria Teppati and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-20 with Technology & Engineering categories.
This comprehensive, hands-on review of the most up-to-date techniques in RF and microwave measurement combines microwave circuit theory and metrology, in-depth analysis of advanced modern instrumentation, methods and systems, and practical advice for professional RF and microwave engineers and researchers. Topics covered include microwave instrumentation, such as network analyzers, real-time spectrum analyzers and microwave synthesizers; linear measurements, such as VNA calibrations, noise figure measurements, time domain reflectometry and multiport measurements; and non-linear measurements, such as load- and source-pull techniques, broadband signal measurements, and non-linear NVAs. Each technique is discussed in detail and accompanied by state-of-the-art solutions to the unique technical challenges associated with its use. With each chapter written by internationally recognised experts in the field, this is an invaluable resource for researchers and professionals involved with microwave measurements.
Precision Measurement Of Microwave Thermal Noise
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Author : James Randa
language : en
Publisher: John Wiley & Sons
Release Date : 2022-11-22
Precision Measurement Of Microwave Thermal Noise written by James Randa and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-22 with Technology & Engineering categories.
Precision Measurement of Microwave Comprehensive resource covering the foundations and analysis of precision noise measurements with a detailed treatment of their uncertainties Precision Measurement of Microwave Thermal Noise presents the basics of precise measurements of thermal noise at microwave frequencies and guides readers through how to evaluate the uncertainties in such measurement. The focus is on measurement methods used at the U.S. National Institute of Standards and Technology (NIST), but the general principles and methods are useful in a wide range of applications. Readers will learn how to perform accurate microwave noise measurements using the respected author’s expertise of calculations to aid understanding of the challenges and solutions. The text covers the background required for the analysis of the measurements and the standards employed to calibrate radiofrequency and microwave radiometers. It also covers measurements of noise temperature (power) and the noise characteristics of amplifiers and transistors. In addition to the usual room-temperature two-port devices, cryogenic devices and multiport amplifiers are also discussed. Finally, the connection of these lab-based measurements to remote-sensing measurement (especially from space) is considered, and possible contributions of the lab-based measurements to remote-sensing applications are discussed. Specific topics and concepts covered in the text include: Noise-temperature standards, covering ambient standards, hot (oven) standards, cryogenic standards, and other standards and noise sources Amplifier noise, covering definition of noise parameters, measurement of noise parameters, uncertainty analysis for noise-parameter measurements, and simulations and strategies On-wafer noise measurements, covering on-wafer microwave formalism, noise temperature, on-wafer noise-parameter measurements, and uncertainties Multiport amplifiers, covering formalism and noise matrix, definition of noise figure for multiports, and degradation of signal-to-noise ratio Containing some introductory material, Precision Measurement of Microwave Thermal Noise is an invaluable resource on the subject for advanced students and all professionals working in (or entering) the field of microwave noise measurements, be it in a standards lab, a commercial lab, or academic research.