Electromagnetic wave measuring apparatus and method

Abstract

An electromagnetic wave measuring apparatus includes a loop probe section having loop probes 11a to 11c whose loop planes are placed so as to be perpendicular to each other, and each loop probe is placed so that its magnetic field detection space is not interfered with by other loop probes. If the loop probe section is placed at measurement position coordinates xi, yj, it detects a magnetic field component at the measurement position coordinates xi, yj, which is parallel to an XY plane, and a magnetic field component in a Z-axis direction at measurement position coordinates xi, yj-1, and repeats measurement by pitch p in a positive Y-axis direction. By calculating the root sum square of the detection results at each measurement position coordinate, a three-dimensional magnetic field level of an object to be measured can be obtained at each measurement position coordinate as electromagnetic field distribution with high-precision.

Description

Invention field [0001] The present invention relates to an electromagnetic wave measuring device and a measuring method thereof for measuring electromagnetic waves radiated by electronic components, and in particular to an electromagnetic wave measuring device and a measuring method thereof for measuring the adjacent electromagnetic field distribution of electromagnetic waves radiated to portable wireless devices such as portable phones. Background technique [0002] In recent years, portable wireless devices such as mobile phones have rapidly spread on a global scale. On the other hand, exposure to electromagnetic fields from portable wireless devices used close to the human body is being managed by electromagnetic waves in the context of biological protection. [0003] In the past, a parallel detection type has been known as a device for measuring the distribution of adjacent electromagnetic fields radiated by electronic devices such as portable wireless devices. For example, t...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned existing adjacent electromagnetic field distribution measuring devices, the various types of small annular elements are arranged in 2 dimensions, which cannot detect the original 3-dimensional electromagnetic field distribution, and the measurement accuracy is low.

[0008] Furthermore, the aforementioned sequential selection device requires a lot of scanning time in order to sequentially select and process the micro ring elements arranged in a two-dimensional grid.

There is also a problem that high-frequency (eg 2 GHz) sensitivity characteristics and insulation between small ring elements are degraded due to the influence of capacitance between switching diode terminals and frequency characteristics of transmission lines

[0009] The above-mentioned parallel detection type device processes the signals of a plurality of small ring elements in parallel at one time, which has the advantage of shortening the scanning time, but each small ring element needs a detection part, so the cost is high

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