CPL-5217-20-NNN-79

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RF directional couplers are a specialized type of electronic component designed to measure the power of the signal travelling in a single direction in a transmission line, such as a coaxial cable. The CPL-5217-20-NNN-79 is part of a range of RF directional couplers manufactured by Fairview Microwave Inc. that are used in applications including satellite communications, radar systems, and radio communication systems. This article will explain the application field of the CPL-5217-20-NNN-79 and its working principle.

Application of the CPL-5217-20-NNN-79

The CPL-5217-20-NNN-79 is a 20dB Directional Coupler with a frequency range from 2 to 6GHz. It features high directivity and low insertion loss, making it well suited for use in applications such as Mobile Base Station receivers/transmitters, Military and ATC Radar Systems, Surface Ship and Submarine sonar systems, broadcasting systems, and CATV Networks.

The CPL-5217-20-NNN-79 is designed to provide power measurements that are accurate within 0.5 dB. This level of accuracy is essential for applications that use multiple receivers and transmitters, or require precise signal power measurements. As a result, the CPL-5217-20-NNN-79 is a cost-effective solution for a wide range of applications.

Working Principle of the CPL-5217-20-NNN-79

A directional coupler is a passive device that measures the power of a signal travelling in a single direction on a transmission line. The CPL-5217-20-NNN-79 directional coupler works similarly to other directional couplers, but uses a four-port design with an integrated power detector.

The CPL-5217-20-NNN-79 is composed of four ports. The first port is the input port, where the signal to be measured is fed in. This signal is then split into two branches within the component, one of which is directed to the output port. The other branch is directed to the detector port, where it is sensed as a voltage signal that is proportional to the power of the input signal. This voltage signal is then fed into the fourth port, which is the return port, where it is redirected to the output port and back to the input port, forming a closed loop.

The CPL-5217-20-NNN-79 is designed to isolate the output signal from the input signal, preventing the output signal from interfering with the measurements taken at the detector port. This ensures that power measurements are accurate and unaffected by any signals detected at the output port.

The CPL-5217-20-NNN-79 also features a low insertion loss, ensuring that the signal received at the input port is the same as the signal received at the output port. This ensures that measurements taken at the detector port are accurate and unaffected by any attenuation present in the component.

Conclusion

The CPL-5217-20-NNN-79 is a 20dB directional coupler used for measurements of signal power in applications such as satellite communications, radar systems, and radio communication systems. It features high directivity and a low insertion loss, as well as accurate power measurements. The work principles of the coupler involve splitting the input signal into two branches, one of which is detected as a voltage signal for power measurement, while the other is redirected to the output port. This ensures that measurements are accurate and unaffected by any attenuation present in the component.

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