Widely applied methods of electromagnetic power density measurement were presented and analyzed in this chapter. The considerations have a purely theoretical character, and they are concerned with the field relationships only. The source of the measurement accuracy limitation, by way of E- or H-field measurement (method error), was demonstrated, and the magnitude of the error for different combinations of sources and measuring probes was estimated. Then, a certain accuracy improvement, as a result of simultaneous E- and H-field measurement, and a calculation of an arithmetic or geometric mean was proposed.

Chapter Contents:

• 6.1 Power Density Measurement Methods
• 6.2 Power Density Measurement Using the Antenna Effect
• 6.3 Conclusions and Comments

Inspec keywords: power measurement; electromagnetic field theory; magnetic field measurement; electric field measurement

Other keywords: field relationships; geometric mean; measurement accuracy limitation; E-field measurement; arithmetic mean; method error; electromagnetic power density measurement; H-field measurement

Subjects: Power and energy measurement; Electric and magnetic fields; Steady-state electromagnetic fields; electromagnetic induction; Voltage measurement; Measurement of basic electric and magnetic variables; Magnetic variables measurement