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Title: High-frequency electric field measurement using a toroidal antenna

Abstract

A simple and compact method and apparatus for detecting high frequency electric fields, particularly in the frequency range of 1 MHz to 100 MHz, uses a compact toroidal antenna. For typical geophysical applications the sensor will be used to detect electric fields for a wide range of spectrum starting from about 1 MHz, in particular in the frequency range between 1 to 100 MHz, to detect small objects in the upper few meters of the ground. Time-varying magnetic fields associated with time-varying electric fields induce an emf (voltage) in a toroidal coil. The electric field at the center of (and perpendicular to the plane of) the toroid is shown to be linearly related to this induced voltage. By measuring the voltage across a toroidal coil one can easily and accurately determine the electric field.

Inventors:
 [1]
  1. Lafayette, CA
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
874354
Patent Number(s):
6373253
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
high-frequency; electric; field; measurement; toroidal; antenna; simple; compact; method; apparatus; detecting; frequency; fields; range; mhz; 100; typical; geophysical; applications; sensor; detect; wide; spectrum; starting; upper; meters; ground; time-varying; magnetic; associated; induce; emf; voltage; coil; center; perpendicular; plane; toroid; shown; linearly; related; induced; measuring; easily; accurately; determine; magnetic field; electric field; wide range; frequency range; frequency electric; /324/

Citation Formats

Lee, Ki Ha. High-frequency electric field measurement using a toroidal antenna. United States: N. p., 2002. Web.
Lee, Ki Ha. High-frequency electric field measurement using a toroidal antenna. United States.
Lee, Ki Ha. Tue . "High-frequency electric field measurement using a toroidal antenna". United States. https://www.osti.gov/servlets/purl/874354.
@article{osti_874354,
title = {High-frequency electric field measurement using a toroidal antenna},
author = {Lee, Ki Ha},
abstractNote = {A simple and compact method and apparatus for detecting high frequency electric fields, particularly in the frequency range of 1 MHz to 100 MHz, uses a compact toroidal antenna. For typical geophysical applications the sensor will be used to detect electric fields for a wide range of spectrum starting from about 1 MHz, in particular in the frequency range between 1 to 100 MHz, to detect small objects in the upper few meters of the ground. Time-varying magnetic fields associated with time-varying electric fields induce an emf (voltage) in a toroidal coil. The electric field at the center of (and perpendicular to the plane of) the toroid is shown to be linearly related to this induced voltage. By measuring the voltage across a toroidal coil one can easily and accurately determine the electric field.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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