Accession Number : AD0612675

Title :   STUDY OF METHODS OF IMPLEMENTING POYNTING VECTOR MEASUREMENTS.

Descriptive Note : Interim rept. no. 8, 1 Apr-30 Jun 64,

Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA MOORE SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Farhat,Nabil ; Foo,K. S. ; Showers,R. M.

Report Date : 31 JUL 1964

Pagination or Media Count : 39

Abstract : The results are reported of a number of experiments with the 'Poynting Sensor' at a frequency of 1 Mc. The purpose of these experiments was to verify the feasibility of making Poynting vector measurements in the near field at 1 Mc. The measurements included magnitude measurement of the E and H components of the field and their relative time phase. Phase measurement was performed with the aid of an oscilloscope and also through the use of a transistorized phase-meter which was expected to provide easier and better measurement accuracy. Multiplication of the magnitudes of E and H by cos gamma (where gamma is the relative angle between them) is also described. This was achieved through the use of a square law multiplier which provided a simple but effective means of measuring the Poynting vector directly. A description is presented of the new instrumentation used, measurement techniques, and the ground plane and its bearing on the measurement at 1 Mc. Photographs of the instrument assemblies used in performing these measurements are also given.

Descriptors :   (*ELECTROMAGNETIC FIELDS, MEASUREMENT), (*ELECTROMAGNETIC PROPERTIES, ENERGY), (*TEST METHODS, ELECTROMAGNETIC PROPERTIES), FEASIBILITY STUDIES, PHASE MEASUREMENT, VOLTAGE, ELECTRIC FIELDS, MAGNETIC FIELDS, PHASE METERS, OSCILLOSCOPES

Distribution Statement : APPROVED FOR PUBLIC RELEASE