050-043-7701229,050-051-0000,050-051-9019,050-053-0000,050-053-9019

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050-043-7701229,050-051-0000,050-051-9019,050-053-0000,050-053-9019
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Description:
RF Coaxial Connectors
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490 K
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42 Pages
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Maker:
ITT [ ITT INDUSTRIES ]
PCB Prototype
PCB Datasheet:41PCB Datasheet:41PCB Datasheet:41PCB Datasheet:41
RF Coaxial Connectors
Microwave
- Very short electromagnetic waves. Frequency range
above 1 GHz.
MIL-C-39012
- The generic specification covering USA military
coaxial connectors.
MIL-C-17
- The generic Mil spec covering coaxial cables.
Mismatch
- The condition in which the impedance of the source and
load are not the same. This reduces power transfer and causes
reflections.
Mounting plan
- The design of the PCB Fabrication or panel cut-out used to mount
the connector.
MPC Coax
- Microminiature coaxial connectors for mobile telephone
or similar applications.
N Connector
- This was the first true microwave connector capable of
working to 18GHz, initially designed for test applications.
Nanohex
- Trade name covering SSMB & SSMC. (Discontinued).
SHV
- A high voltage coax connector.
Noise
- An external electromagnetic signal which interferes with the
desired signal.
Non-captive
- A component such as a contact which does not have a
retention feature.
Ohm
- A measure of DC resistance or RF impedance represented by
.
Panel mount
- The type of connector fitted to a chassis using a 2 or 4
hole flange mounting.
Passivation
- This is a surface treatment applied primarily to stainless
steel. The process removes contaminating iron particles and produces
a passive surface.
PCB
- Printed Circuit Board.
Peak power
- Is the maximum power which may be handled by a
connector or cable.
Phase adjuster
- A device to change the electrical length and therefore
the relative phase of a microwave signal. Sometimes referred to as a
Line Stretcher.
Plug
- One half of a mating pair of connectors. The plug interface
normally goes outside the jack interface.
Posi-Lock
- A positive locking device by means of a latching sleeve.
This prevents accidental disconnection of connector.
POSNS
- Abbreviation for ‘‘positions’’.
Press-in mount
- A connector which is mounted into a panel using a
knurled body.
PTFE
- Abbreviation of polytetrafluorethylene. This is the most
commonly used dielectric (insulator) used in professional coaxial
connectors.
Push-on
- See ‘‘Slide-on’’.
Push-Pull
- The mating engagement of latch sleeve connectors
preventing accidental disengagement.
PWB
- Printed Wiring Board.
QPL
- Qualified Parts List. Parts approved to MIL-C-39012
specification.
QT
TM
- A range of connectors developed by ITT Cannon giving Quick
Termination and therefore reduced installation cost.
Receptacle
- A term used to describe a connector usually bulkhead or
PCB mounted.
Return loss
- A reason for loosing RF energy due to signals being
reflected due to a mismatch in a transmission line.
SSMC
- A micro-miniature threaded coupling coaxial connector
(smaller SMC).
Stripline
- A method of building a microwave circuit. The circuitry is
sandwiched between 2 ground planes. Sometimes referred to as
Tri-plate.
Teflon
- Du Pont trade name for PTFE.
TEM transmission line
- A high performance cable assembly.
Solderless SMA
- 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.
SSIS
TM
- ITT Cannon range of microminiature blind-mate slide-on
connectors.
SSMA
- A miniature version of the SMA. This range has a theoretical
frequency capability of 40 GHz, however has limitations regarding its
physical strength.
SSMB
- A micro-miniature snap-on coupling coaxial connector
(smaller SMB).
SIS
TM
- ITT Cannon range of blind-mate slide-on connectors.
Skin effect
- 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.
Slide-on
- The mating action of connectors which push together using
low force. Also known as blind mate. e.g. BMB.
SMA
- A microwave connector with normal operating frequency of
18GHz (some have been extended to 22GHz).
SMB
- A snap together miniature coaxial connector normally restricted
to 4 GHz.
SMC
- A miniature coaxial connector of the same size as SMB but
secured by means of a threaded coupling nut.
SMD
- Sometimes used as an abbreviation for slide-on variants of
SMB. This is a misnomer, the more common use is for Surface Mount
Device.
SMS
- Rack and panel slide-on connectors with the same line size as
SMA. These are covered by MIL. spec. BMB.
SMZ
- A 75 snap-on connector previously known as 75 Conhex.
Also known as Type 43.
Snap-on
- A term used to describe the mating action of SMB and
SSMB connectors.
RF
- An abbreviation for Radio Frequency.
RFI
- An abbreviation for Radio Frequency Interference. (Electronic
Pollution).
RF leakage
- The RF power lost from a transmission line or device.
Measured in dB.
RG
- The traditional prefix for MIL. spec. coaxial cables.
Screw Lock
- An alternative locking mechanism to prevent accidental
disconnection of connectors.
Screw-on
- The mating action of connectors which are joined using a
screw thread. e.g. SMC.
Sealflex 2
TM
- An ITT Cannon trade name for a flexible microwave cable
assembly which has a performance similar to semi-rigid cable.
Semi-rigid cable
- A coaxial cable where the outer conductor is a solid
metal tube.
Glossary of Terms
Tensile strength
- The greatest force a device can withstand without
tearing or pulling apart. This is frequently the method of determining
the effectiveness of a crimp.
TEP 1E
- A British Telecom Equipment Practice which uses connectors
based on the ITT Cannon 75 Conhex. Referred to as ‘‘SMZ-Type
43’’.
Teplock
- A method of rapid connect/disconnect on Digital Distribution
Frames.
TNC
- Thread Nut Connector same size as BNC; the only obvious
difference is the coupling nut.
Tri-plate
- See Stripline.
Type 43 connectors
- The SMZ coaxial connector used extensively in
telecommunication systems.
UG symbol
- Used to indicate a connector made to US government
spec.
UHF
- 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
discontinuity.
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