RF Coaxial Connectors
- Very short electromagnetic waves. Frequency range
above 1 GHz.
- The generic specification covering USA military
- The generic Mil spec covering coaxial cables.
- The condition in which the impedance of the source and
load are not the same. This reduces power transfer and causes
- Microminiature coaxial connectors for mobile telephone
or similar applications.
- This was the first true microwave connector capable of
working to 18GHz, initially designed for test applications.
- Trade name covering SSMB & SSMC. (Discontinued).
- A high voltage coax connector.
- An external electromagnetic signal which interferes with the
- A component such as a contact which does not have a
- A measure of DC resistance or RF impedance represented by
- The type of connector fitted to a chassis using a 2 or 4
hole flange mounting.
- This is a surface treatment applied primarily to stainless
steel. The process removes contaminating iron particles and produces
a passive surface.
- Printed Circuit Board.
- Is the maximum power which may be handled by a
connector or cable.
- A device to change the electrical length and therefore
the relative phase of a microwave signal. Sometimes referred to as a
- One half of a mating pair of connectors. The plug interface
normally goes outside the jack interface.
- A positive locking device by means of a latching sleeve.
This prevents accidental disconnection of connector.
- Abbreviation for ‘‘positions’’.
- A connector which is mounted into a panel using a
- Abbreviation of polytetrafluorethylene. This is the most
commonly used dielectric (insulator) used in professional coaxial
- See ‘‘Slide-on’’.
- The mating engagement of latch sleeve connectors
preventing accidental disengagement.
- Printed Wiring Board.
- Qualified Parts List. Parts approved to MIL-C-39012
- A range of connectors developed by ITT Cannon giving Quick
Termination and therefore reduced installation cost.
- A term used to describe a connector usually bulkhead or
- A reason for loosing RF energy due to signals being
reflected due to a mismatch in a transmission line.
- A micro-miniature threaded coupling coaxial connector
- A method of building a microwave circuit. The circuitry is
sandwiched between 2 ground planes. Sometimes referred to as
- Du Pont trade name for PTFE.
TEM transmission line
- A high performance cable assembly.
- An SMA connector that can be connected to
semi-rigid cable by compressing the inner body rather than by
soldering. (sometimes referred to as semi-rigid ‘crimp’ connectors.
- ITT Cannon range of microminiature blind-mate slide-on
- A miniature version of the SMA. This range has a theoretical
frequency capability of 40 GHz, however has limitations regarding its
- A micro-miniature snap-on coupling coaxial connector
- ITT Cannon range of blind-mate slide-on connectors.
- The tendency of alternating currents to flow near to the
surface of a conductor; this increases resistance and becomes more
marked the higher the frequency.
- The mating action of connectors which push together using
low force. Also known as blind mate. e.g. BMB.
- A microwave connector with normal operating frequency of
18GHz (some have been extended to 22GHz).
- A snap together miniature coaxial connector normally restricted
to 4 GHz.
- A miniature coaxial connector of the same size as SMB but
secured by means of a threaded coupling nut.
- Sometimes used as an abbreviation for slide-on variants of
SMB. This is a misnomer, the more common use is for Surface Mount
- Rack and panel slide-on connectors with the same line size as
SMA. These are covered by MIL. spec. BMB.
- A 75 snap-on connector previously known as 75 Conhex.
Also known as Type 43.
- A term used to describe the mating action of SMB and
- An abbreviation for Radio Frequency.
- An abbreviation for Radio Frequency Interference. (Electronic
- The RF power lost from a transmission line or device.
Measured in dB.
- The traditional prefix for MIL. spec. coaxial cables.
- An alternative locking mechanism to prevent accidental
disconnection of connectors.
- The mating action of connectors which are joined using a
screw thread. e.g. SMC.
- An ITT Cannon trade name for a flexible microwave cable
assembly which has a performance similar to semi-rigid cable.
- A coaxial cable where the outer conductor is a solid
Glossary of Terms
- The greatest force a device can withstand without
tearing or pulling apart. This is frequently the method of determining
the effectiveness of a crimp.
- A British Telecom Equipment Practice which uses connectors
based on the ITT Cannon 75 Conhex. Referred to as ‘‘SMZ-Type
- A method of rapid connect/disconnect on Digital Distribution
- Thread Nut Connector same size as BNC; the only obvious
difference is the coupling nut.
- See Stripline.
Type 43 connectors
- The SMZ coaxial connector used extensively in
- Used to indicate a connector made to US government
- An old style coaxial connector, recently used on larger portable
cellular radio receivers as the antenna connector.
Voltage standing wave ratio (VSWR)
- A way of expressing the
resultant loss of power as a result of signal reflections due to