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CouplerCouplersare of electronic device that joints two electronic circuits orsocketsInan electronic device there are many types of couplers which are knownas acoustic couplers Intelecommunication device known as a directional coupler Akind of laser mirror known as an output coupler.Aconnector between two moving parts to relay the motion, such as aUniversal joint or an Oldham couplerAcousticcouplers: In these types of couplers transmission of digital data ispermitted between modem of computer terminal and telephone line ineither direction without making direct connections.Directionalcoupler:- This types of couplers have four parts in which one is asinput ,one is as 'through port where most of incoming signals exists,one is considered as coupled port where a fixed fraction of inputsignals appears mostly in dBs and an isolated port which is usuallyterminated. If the signal is reversed so that it enters in throughport, most of it exits the "input" port, but the coupledport is now the port that was previously regarded as the "isolatedport". The coupled port is a function of which port is theincident port.Outputcoupler: -An output coupler is a partially reflective mirror which isused in lasers to extract a portion of laser beam from the opticalresonatorOldhamcoupler:- Through this torque is transferred between two parallel,Ithas three discs , one coupled to input , one to the output and middledisc is joined to the first two by torque and groove .The Torque andgroove on one side is perpendicular to the torque and groove on other.These types of coplers are most compact .Thecoupler is named for John Oldham who invented in Ireland in 1820.Features1.High PerformanceThehigh frequency characteristics of couplers feature extremely lowloss, a high degree of matching, and high isolation.2.Power Uniform Distribution and 90°Phase Difference TypeInthis coupler has one input, two output (or two input, one output)power uniform distribution type having a 90°phase differencebetween the two outputs (or two inputs).3.Miniature and LightweightCorrosion-resistantaluminum is used in the couplers for the case and some manufacturershas original pattern design of these type of couplersWhichuses a stripline triplate method enables the couplers to be miniatureand lightweight?4.Couplers with SMA ConnectorsUseof SMA connectors which feature stainless steel for the exteriorCladdingmakes these couplers durable.5.Equipped with TabsTabspermit direct mounting to surface circuits in the couplers6.High Power TypeThistype of coupler can be used with up to 100 W of power.Applications:-Couplerscan be used in mobile phones base stations MeasurementequipmentRadiocommunication equipmentCouplersas a communication tool can be vital for the public safety andsecurity services in a critical mission". Anyuntrained staff can use these types as these are so simple AntennacouplersBegantoElectronic Components
Couplers,CouplerCouplersare,el