參數(shù)資料
型號： SSMC
廠商： ITT Corporation
英文描述： RF Coaxial Connectors
中文描述： 射頻同軸連接器
文件頁數(shù)： 38/39頁
文件大?。?/td> 471K
代理商： SSMC
142
RF Coaxial Connectors
Glossary of Terms
Microwave
- Very short electromagnetic waves. Frequency range
above 1GHz.
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 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).
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.
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.
SHV
- A high voltage coax connector.
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.
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).
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.
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.
相關(guān)PDF資料
PDF描述
SSMP1 PHOTOVOLTAIC POWER CONVERTER ARRAY
SSMP2 PHOTOVOLTAIC POWER CONVERTER ARRAY
SSMP3 PHOTOVOLTAIC POWER CONVERTER ARRAY
SSMP4 PHOTOVOLTAIC POWER CONVERTER ARRAY
SSMP5 PHOTOVOLTAIC POWER CONVERTER ARRAY
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