Anechoic Chambers & Spectrum Analyzers
Spectrum Analyzers:
A measuring instrument for the analysis and measurement of signals in the electromagnetic spectrum. It is a special type of harmonic analyzer. Spectrum analyzers are available for audio-frequency and radio-frequency measurements, as well as for microwave and optical signal measurement.
Anechoic Chambers:
A room whose boundaries absorb effectively all the waves incident on
them, thereby providing free-field conditions. A free field is a field whose boundaries exert negligible effect on the incident waves. In practice, it is a field in which the effects of the boundaries are negligible over the frequency range of interest. (Chambers vary based on the frequency range being investigated, i.e. Acoustic chambers, radio frequency and microwave
chambers).
The appropriate Spectrum Analyzer is used in the appropriate
Anechoic Chamber. The room, in theory, effectively dissipates the waves in the frequency being investigated by the Spectrum Analyzer. A common use of Chambers and Analyzers is to study Electromagnetic Compatibility (EMC), but they can also be used to measure signals being generated by an instrument (in our case, signals coming from within our body).
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