Nonperturbing electric field sensor for near field measurement

2002 ◽  
Author(s):  
F. Cecelja ◽  
M. Bordovsky ◽  
B. Balachandran
Keyword(s):  
Electric Field ◽  
Field Measurement ◽  
Near Field ◽  
Electric Field Sensor ◽  
Field Sensor ◽  
Near Field Measurement

Planar Near-Field Electric Field Sensor Array Applications Facilitated by Neural Networks

2021 ◽  
pp. 1-1
Author(s):  
Zachary D. Drummond ◽  
Kevin E. Claytor ◽  
Ross N. Adelman ◽  
David R. Allee ◽  
David M. Hull
Keyword(s):  
Neural Networks ◽  
Electric Field ◽  
Sensor Array ◽  
Near Field ◽  
Electric Field Sensor ◽  
Field Sensor

A Miniature High-Sensitivity Active Electric Field Probe for Near-Field Measurement

2019 ◽  
Vol 18 (12) ◽  
pp. 2552-2556 ◽  
Author(s):  
Zheng Min ◽  
Zhaowen Yan ◽  
Wei Liu ◽  
Jianwei Wang ◽  
Donglin Su ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Measurement ◽  
Near Field ◽  
High Sensitivity ◽  
Electric Field Probe ◽  
Near Field Measurement

scholarly journals A near-field measurement based method for predicting field emissions below 30 MHz in a CISPR-25 test set-up

2016 ◽  
Vol 14 ◽  
pp. 147-154
Author(s):  
Zongyi Chen ◽  
Stephan Frei
Keyword(s):  
Electric Field ◽  
Field Measurement ◽  
Near Field ◽  
Ground Plane ◽  
High Sensitivity ◽  
Field Measurements ◽  
Alternative Methods ◽  
Antenna Measurement ◽  
Cispr 25 ◽  
Near Field Measurement

Abstract. Automotive electric components are required to pass radiated emission tests. According to CISPR-25 standard (ALSE method), an expensive anechoic chamber is needed for conducting the field emission testing. Reproducibility due to high sensitivity to chamber and setup details is poor. Alternative methods, which perform measurements without using a chamber are preferred. This paper provides an alternative pre-compliance method for predicting the fields of CISPR-25 results for frequencies below 30 MHz, based mainly on electric near-field measurements. The motivation is that common-mode current measurements or magnetic near-field measurement based methods give good field prediction above 30 MHz, but fail below 30 MHz. The proposed method applies Huygens' Principle for field prediction. The electric field distribution for the defined Huygens' surface and the equivalent currents are estimated from a small number of field measurements close to the ground plane. It is shown that the electric field can be well predicted, compared with a full-wave simulation the deviation is within 4 dB, compared with a standard antenna measurement up to 3 MHz the deviation is less than 1 dB.

scholarly journals A Novel Tangential Electric-Field Sensor Based on Electric Dipole and Integrated Balun for the Near-Field Measurement Covering GPS Band

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 1970 ◽  
Author(s):  
Wang ◽  
Yan ◽  
Liu ◽  
Su ◽  
Yan
Keyword(s):  
Electric Field ◽  
Electric Dipole ◽  
Near Field ◽  
Field Measurements ◽  
Electric Field Sensor ◽  
Single Output ◽  
Tangential Electric Field ◽  
Active Circuit ◽  
Field Sensor ◽  
The Magnetic Field

This paper presents a novel tangential electric-field sensor with an embedded integrated balun for sensing up a tangential electric field over a circuit surface in the near-field measurements covering the GPS band. The integrated balun is embedded into the sensor to transform the differential voltage induced by the electric dipole into the single output voltage. The measurement system with a high mechanical resolution for the characterizations and tests of the sensor is detailed in this paper. The frequency response of the sensor characterized by a microstrip line from 1.35 GHz to 1.85 GHz (covering the GPS band) is rather flat. The rejection to the magnetic field of the sensor is up to 20.1 dB. The applications and validations of the sensor are conducted through passive/active circuit measurements.

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