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Coaxial RF connectors developed in the 1980s
MCX
(
micro coaxial connector
) are
coaxial
RF connectors
developed in the 1980s. They have the same inner contact and
insulator
dimensions as the
SMB connector
but are 30% smaller. MCX is standardized in European CECC 22220.
[1]
Connector design
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MCX connectors use a snap-on interface and usually have a 50 Ω
impedance
(some are 75 Ω) . They offer broadband capability from
DC
to 6
GHz
.
[2]
The contact surfaces are gold-plated.
The outer diameter of the plug is approx 3.6 mm or 0.140 inch.
MCX and the smaller
MMCX connector
are frequently used to connect external antennas
to
GPS receivers
. They are also common on USB
DVB-T
tuners for computers and laptops, to connect an external antenna to the tuner.
The MCX connector is also being used on at least some of the new generation of mostly inexpensive software-defined
oscilloscopes
and/or
signal generators
such as the DS212. This is a low frequency application, at most a few MHz bandwidth, so the electrical performance characteristics are relatively unimportant, however the small size would appear to be an important feature.
See also
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References
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