Accession Number : AD0665124

Title :   A LARGE DYNAMIC RANGE MICROWAVE POWER MEASUREMENT SYSTEM EMPLOYING FEEDBACK.

Descriptive Note : Instrumentation papers no. 132,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Goggins,William B. , Jr

Report Date : OCT 1967

Pagination or Media Count : 26

Abstract : 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)

Descriptors :   (*RADIOFREQUENCY POWER, MICROWAVES), (*MICROWAVES, MEASUREMENT), RADIO RECEIVERS, DRIFT, SERVOMECHANISMS, ATTENUATORS, BANDWIDTH, FIELD EFFECT TRANSISTORS, DEMODULATORS, AUTOMATIC GAIN CONTROL, LOGARITHMIC AMPLIFIERS, SCATTERING, RADAR CROSS SECTIONS

Subject Categories : Active & Passive Radar Detection & Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE