A large dynamic range microwave power measurement system employing feedback /

Accurately measuring low level microwave signals over a large dynamic range presents many problems to instrumentation engineers. This is especially true if the measurements must be made at high speeds, as is the case when measuring radar cross sections. This paper discusses several systems for measuring low level microwave signals that are rapidly varying in power. The technique of designing a servo-controlled balanced-measurement system is discussed in detail and an experimental system is described. (Author).Research supported by the Microwave Physics Laboratory, Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, L.G. Hanscom Field, Bedford, Massachusetts.Microwave Physics Laboratory Project 5635.AD0665124 (from http://www.dtic.mil)."October 1967."Includes bibliographical references.Accurately measuring low level microwave signals over a large dynamic range presents many problems to instrumentation engineers. This is especially true if the measurements must be made at high speeds, as is the case when measuring radar cross sections. This paper discusses several systems for measuring low level microwave signals that are rapidly varying in power. The technique of designing a servo-controlled balanced-measurement system is discussed in detail and an experimental system is described. (Author).Mode of access: Internet