NDLI: Analysis of Microwave Measurement Techniques by Means of Signal Flow Graphs

Content Provider	IEEE Xplore Digital Library
Author	Hunton, J.K.
Copyright Year	1955
Description	Microwave measurement techniques can be analyzed more simply by using signal flow graphs instead of the customary scattering matrices to describe the microwave networks used in the measuring system. This is because the flow graphs of individual networks are simply joined together when the networks are cascaded and the solution for the system can be written down by inspection of the over-all flow graph by application of the nontouching loop rule. This paper reviews the method of setting up flow graphs of microwave networks and the rule for their solution. A single directional-coupler reflectometer system for measuring the reflection coefficient of a load is then analyzed by this method. The analysis shows how auxiliary tuners can be used to cancel residual error terms in the measurement of the magnitude of the reflection coefficient at a particular frequency. The analysis also shows how an additional tuner can be used to measure the phase angle of the reflection coefficient. These reflectometer techniques are particularly useful in the measurement of very small reflections.
Starting Page	206
Ending Page	212
Page Count	7
File Size	641909
File Format	PDF
ISSN	00972002
Volume Number	8
Issue Number	2
Language	English
Publisher Date	1960-03-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal analysis Microwave theory and techniques Measurement techniques Flow graphs Reflection Tuners Particle measurements Scattering Microwave measurements Fluid flow measurement
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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