1 research outputs found
Measuring the shielding properties of flexible or rigid enclosures for portable electronics
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.Heaviside, in volume 1 of Electromagnetic theory,
considered shielding of conducting materials in the
form of attenuation. This treatment is still significant
in the understanding of shielding effectiveness. He
also considered propagation of electromagnetic waves
in free-space. What Heaviside (1850–1925) could
never have imagined is that 125 years later, there
would be devices we know as mobile phones (or
cell phones, handies, etc.) with capabilities beyond
the dreams of the great science fiction writers of
the day like H. G. Wells (1866–1949) or Jules Verne
(1828–1905). More than this, that there would be a
need for law enforcement agencies, among others, to
use electromagnetically shielded enclosures to protect
electronic equipment from communicating with the
‘outside world’. Nevertheless, Heaviside’s work is
still fundamental to the developments discussed here.
This paper provides a review of Heaviside’s view of
shielding and propagation provided in volume 1 of
Electromagnetic theory and develops that to the design
of new experiments to test the shielding of these
portable enclosures in a mode-stirred reverberation
chamber, a test environment that relies entirely on
reflections from conducting surfaces for its operation