Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Coupler Type:	Standard
Frequency:	824MHz ~ 849MHz
Coupling Factor:	24.2dB
Applications:	AMPS
Insertion Loss:	0.2dB
Power - Max:	3W
Isolation:	-48dB
Return Loss:	33dB
Package / Case:	0603 (1608 Metric)
Supplier Device Package:	0603

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RF Directional Coupler – CP0603A0836MLTR Applications and Working Principle

A directional coupler (or RF directional coupler) is a passive two-port device used to tap off a signal to measure its power or to inject a signal into a line without disturbing the original signal – or, in other words, it helps with the redirecting and combining of two signals. CP0603A0836MLTR is a specific model of RF directional coupler which is designed for operation in the 836 MHz communication band and SMD (Surface Mount Device) package.

Applications of CP0603A0836MLTR Directional Couplers

1.Antenna Testing
CP0603A0836MLTR directional couplers are widely used in research laboratories for antenna testing. They provide an ideal platform for gathering data on the behavior of radiations from the tested antenna by virtue of their capability to measure the power of different frequencies within the 836 MHz communication spectrum. 2.Television Broadcast
TV broadcaster operators also use the directional couplers to ensure synchronization of incoming signals from multiple transmitters that are spread over a large geographic area. This ensures the smooth transfer of signals from the originating source to the final destination.3.Interference Suppression
They are also being used in circuit designs to reduce interferences due to reflected signals. Directional couplers are used as the trigger for active control systems that can sense the incoming signal and adjust its gain to reduce the interference.4.Decoupling circuits
Directional couplers have also been used to decouple circuits that have signal output pathways that are nonlinear. The couplers split the signal into two parts so that a portion of the energy from the signal can be sent back to the originating source, thus avoiding overload of the main output circuit.

Working Principle of CP0603A0836MLTR Directional Couplers

The CP0603A0836MLTR directional coupler comprises two network sections- a coupling section and a matching section. The coupling section is made up of a rectangular inductor that is connected between the two terminals of the network- in and out. This section helps to split the signal into two paths- one through the device and one reflected back to the originating source.The matching section comprises two parallel capacitors and an inductor. This section allows the signal to travel form the input to the output without any impediment. The direction of the signal in both these sections is from the input to the output.The reflected signal travels through the inductor of the coupling section and is sent back to the originating source. This is the directional part of the coupler- the signal can travel in only one direction – from the input to the output.The quad capacitor section of the directional coupler is the feedback section that allows signals to travel from the output to the input. This section helps to constrain a large induced voltage and current of the signal within a limited range, thereby reducing the possibility of overload due to amplified interference signals.To sum it up, the CP0603A0836MLTR RF directional coupler helps to redistribute and combine two signals by splitting them into two paths – one travelling from the input to the output and other signal that is reflected back to the originating source. The matching section allows the signal to travel unimpeded from the input to the output while the quad capacitor helps to lower the induced current and voltage of the signal so as to protect the output from excessive amplifications of interference signals.

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