Transmission of a signal or filter as a function of frequency or wavelength
The transmission curve or transmission characteristic[1] is the
mathematical function or
graph that describes the
transmission fraction of an
optical or
electronic filter as a function of
frequency or
wavelength.[2] It is an instance of a
transfer function but, unlike the case of, for example, an amplifier, output never exceeds input (maximum transmission is 100%). The term is often used in commerce,[3] science,[4] and technology[5] to characterise filters.
The term has also long been used in fields such as
geophysics and
astronomy to characterise the properties of regions through which radiation passes, such as the
ionosphere.[6][7]
See also
Electronic filter — examples of transmission characteristics of electronic filters
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Radiation transmission data for radionuclides and materials relevant to brachytherapy facility shielding, P. Papagiannis et al., 2008, American Association of Physicists in Medicine. DOI:10.1118/1.2986153
[1][permanent dead link]. Discusses and calculates transmission curves related with screening of clinical equipment generating ionising radiation.