CPL-5226-10-NNN-79

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An RF directional coupler, specifically a CPL-5226-10-NNN-79, is a passive device that couples part of an electrical signal between two ports, usually so that the signal can be measured without disturbing the signal between the other two ports. Although directional couplers are commonly used in radio-frequency (RF) applications, they can be constructed to work in other frequency ranges as well.

The CPL-5226-10-NNN-79, in particular, is a wideband, small-sized, low-profile, directional coupler that can be used in a variety of application fields. Depending on the frequency of the incoming signal, it can be used for measuring power, direction-finding, and impedance matching in several radio-frequency applications such as cellular networks, satellite, and broadcast communications, and radar systems. The device can be used in both transmit and receive duties for down- and up-link applications.

The CPL-5226-10-NNN-79 directional coupler works on the principle of a parallel-plate directional coupler. The layout comprises of a single, generally symmetrical four-port microstrip structure. Input power is split into two signals at the differential outputs, of which one is direct while the other is 180° out of phase. The device has a set of ports that consists of two differential input ports, two differential output ports, one coupled port, and one reference port. The distribution of the powers at the ports depends on the coupler design.

The CPL-5226-10-NNN-79 is one of the more common types of RF directional couplers. It has a high power-handling capability due to its robust and reliable construction, and can be used in a variety of radio frequency applications. It is an excellent choice for applications needing a reliable and compact directional coupler in a limited space.

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