Shielded Cables – What They Are And How They Are Manufactured - PowerPoint PPT Presentation

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Shielded Cables – What They Are And How They Are Manufactured

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Shielded cables are required where the cables used are required to face extreme pressure and torment. But, which type of shielded cables do you need manufactured from aircraft cable assembly manufacturers in India? – PowerPoint PPT presentation

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Title: Shielded Cables – What They Are And How They Are Manufactured


1
We are all aware of how important cables are for
us today. Just as much as we depend upon
electronics today, so much do our electronics
depend on cables to work. So, directly or
indirectly, cables are an integral part of our
daily lives. Moreover, with the kind of
pressures, temperatures, and withering that
these cables experience every day, it is
important that they are kept protected against
all harsh environmental conditions and the best
way to do that is by shielding them.
A shielded cable comprises of an insulated
conductor encased in a conductive layer of
material. The shield can be made from a wide
range of materials like aluminum, steel, copper,
polymer, or more, depending upon the type of
cable and application. With such shielded
cables, unwanted coupling into the cable assembly
from an outside source can be prevented that
also helps to reduce the overall radiated
emissions that emanate from the cables. Signal
integrity and emissions are thus improved. Types
of shielded cable assemblies There are two main
types of shielded cables available foil
shielded cables and braid shielded cables. Foil
shielded cables
2
Here, the shield is made of a foil layer, which
comprises of aluminum or another effective
conducting material, or a thin layer of copper.
The material is spooled like tape and then
wrapped onto the perimeter of the wire jacket in
a helical pattern, which forms the shielding
layer. The outer jacket is then applied. Such
foil shielded cables have their conductors
completely covered, which helps the cables to
withstand even the highest frequencies (even
greater than 100 MHz). These cables are light in
weight and inexpensive. Braid shielded
cables Here, a tightly woven lattice of thin
material like tin or copper is used to totally
encase the shielded cable assembly. Layers of
individual conductive metal strands are crossed
over the core of the cable or conductor, which
are then encased in a jacket for maximum
protection thus offering the braided design.
However, there is not complete coverage of the
cable. The coverage may vary between 70-95,
depending upon the cable being used. This limited
coverage and the gaps in the braids limit
effectiveness at very high frequencies. However,
such braid shielded cables offer more
versatility, and are much flexible and strong.
Thus, braid shielded cables are used in low to
mid range frequency applications where the
frequency range is up to 100 MHz, but also where
strong and flexible cables are required. Both
foil and braid shielded cables are completely
viable options, depending upon what you are
looking for. They both have their own pros and
cons, and none is better than the other.
Depending upon your application and requirements,
you can approach aircraft cable assembly
manufacturers in India to have the most
appropriate cable assemblies made for you. If
flexibility and strength is the major concern,
braid shielded cables are the best choice. But,
if your application works at very high
frequencies, foil shielded cables should be your
option. Miracle Aerospace is one such reputed and
well-known manufacturer who is engaged in
various Make in India projects like light
transport aircraft, helicopters, cockpit harness,
fighter jets, radar refurbishing projects, and
more.
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