A method for generating a standard magnetic field in a circular waveguide

Author

Nakane, Hiroshi ; Omori, Shunichi ; Yokoshima, Ichiro

Author_Institution

Dept. of Electr. Eng., Sci. Univ. of Tokyo, Japan

Volume

38

Issue

3

fYear

1989

fDate

6/1/1989 12:00:00 AM

Firstpage

785

Lastpage

788

Abstract

In order to minimize the effect of electromagnetic interference and the surrounding conductive materials in the calibration of small loop antennas used above HF frequencies, a novel method for generating a standard magnetic field in a circular waveguide is proposed. A method for obtaining the average magnetic-field strength incident on a receiving loop by placing the radiating and receiving circular loop antennas within a circular waveguide operated below the cutoff frequency region is described. The differences between the theoretical and experimental values of the field strength are within 0.1 dB between 10 and 150 MHz for the radiating and receiving loops with radii of 1.0 cm and within 0.15 dB between 10 and 110 MHz for radiating and receiving loops with a radii of 1.5 cm

Keywords

antennas; calibration; circular waveguides; electromagnetic interference; interference suppression; magnetic field measurement; magnetic fields; measurement standards; 1.0 cm; 1.5 cm; 10 to 150 MHz; above HF frequencies; calibration; circular waveguide; cutoff frequency; effect of electromagnetic interference; field intensity meter calibration; field strength; radiating loop; receiving circular loop antennas; small loop antennas; standard magnetic field; Electromagnetic waveguides; Frequency; Hafnium; Interference; Magnetic fields; Magnetic materials; Magnetic shielding; Receiving antennas; Testing; Waveguide theory;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.32193

Filename

32193