In the wireless sensor networks (WSNs) for electric field measurement system under the High-Voltage Direct Current (HVDC) transmission lines, it is necessary to obtain the electric field distribution with multiple sensors. The location information of each sensor is essential to the correct analysis of measurement results. Compared with the existing approach which gathers the location informatio...

Operation of traditional fieldmeters typically relies on mechanically actuated capacitance for DC fields measurement. This paper provides theoretical background for operation of an electric field sensor with a solid state variable capacitor. Design is supported by circuit and FEA models, illustrating the operation. Theoretical work is verified against results of sensor’s tests performed in DC, ...

A rather novel method has been studied, referred to here as electric-field-induced coherent Raman scattering (E-CRS). Two beams of laser pulses of frequencies, whose energy difference matches to the Raman transition, produce an infrared (IR) coherent beam corresponding to the Raman transition energy in the presence of a direct-current (dc) electric field. The IR light may be considered as an an...

A modification has been proposed by the authors to calculate the field strength at the cells of a biological target which is illuminated by a transmitting array antenna with a beam width of 6 0 . The biological target is divided into large number of cells so that complex permittivity and electric fields are assumed to be constant in the small area of each cell. The electric fields are calculate...

Based on the propagation rules of electromagnetic waves in metal conductors, this paper analyzes the characteristics of electric field and magnetic field of internal conductors. Then the complex power of electromagnetic wave is calculated. The impedance calculation formula of metal conductor is derived. Moreover, in order to identify and detect defects of metal casing, an alternating current im...

We present results of finite element analysis for simple test structures which demonstrate clearly that the measurement situation is complex. The test structure consists of an open geometry parallel plate capacitor within a screened enclosure. Indeed, the presence of earthed objects, even at considerable distances, is shown to have a significant effect on the field geometry close to the source....