0898CD15B1748E

Packaging:	Cut Tape (CT)
Part Status:	Obsolete
Coupler Type:	Dual Band, Dual Path
Frequency:	880MHz ~ 915MHz, 1.71GHz ~ 1.785GHz
Coupling Factor:	19.2 ± 1dB
Applications:	--
Insertion Loss:	0.4dB
Power - Max:	--
Isolation:	--
Return Loss:	10.9dB
Package / Case:	0805 (2012 Metric)
Supplier Device Package:	0805
Series:	--

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RF Directional Coupler

A directional coupler is a device used to transfer power from an electrical circuit onto another circuit without allowing power to be transmitted back in the reverse direction. Its purpose in communications and instrumentation applications is to sample power in the forward direction, while providing a means of coupling low levels of energy from the main line to an auxiliary circuit. A Directional Coupler also has the ability to sample and measure power, as well as the ability to direct the energy from the main line to the receiving circuit.The 0898CD15B1748E is a type of RF Directional Coupler. This specific model is designed to connect two lines of RF signals, usually from a broadcast power amplifier to a receiving antenna. It is also useful for matching antennas and for measuring power levels in excess of 1 kW. The principle behind the working of this device is simple. When signals are transmitted between two points, a portion of the signal is reflected, just like when you speak to a wall. This reflected power is received by the Directional Coupler, and from there, it is routed to a receiving circuit in order to provide a path for the reflected signal.The 0898CD15B1748E uses a special type of directional coupler known as a wide-band directional coupler. This type of coupler is designed to provide wide-band operation up to 10GHz, with very low insertion loss (typically less than 0.3dB). It also boasts a very high directivity level of > 50dB, which enables it to sample very small levels of reflected signal.When it comes to applications, the 0898CD15B1748E is versatile and can be used in a variety of environments. It is typically used in power amplifiers, audio amplifiers, transmitters, and receivers. It is also used in satellite television systems, cellular telephone systems, and radio broadcast systems. It works particularly well in environments that require high directivity, such as long-distance wireless communication systems.In summary, the 0898CD15B1748E Directional Coupler is a useful tool for connecting two RF signals, measuring levels of reflected power, and directing very small signals to a receiving circuit. Its wide-band operation and high directivity make it suitable for a variety of applications in the RF industry.

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