Power dividers are also known as power splitters. And when they are utilized in the reverse, the rf power dividers could also be referred to as power combiners. Power dividers are also called directional couplers but by this time, these couplers are being referred to as passive devices. These passive devices are being used mostly in the area of radio technology. The couplers couple a defined amount of its electromagnetic power sourced into a transmission line to a port. This enables the signal collected to be utilized across another circuit. Directional couplers only couple power flowing from one direction.
Power entering an output port will be coupled to its isolated port and not to an already coupled port. There is a directional coupler that is designed to split power equally between two ports, and this one is known as the hybrid coupler. Directional couplers are often built from two coupled transmission lines. These lines will be set close together. This allows for energy to pass seamlessly from one coupler to another. This motion is a preferred technique where microwave frequencies are being generated. It is also ideal in transmission lines that are being facilitated to implement a number of circuit elements.
But what is known as lumped component devices can be built for the generation of lower frequencies. One example of this low frequency requirement is that of audio frequencies experienced in telephony. Waveguide couplers can correspond with alternate conducting transmission line designs. Many applications are being applied to directional couplers and power dividers. Examples here include signals for measurement or monitoring purposes, combining feeds to and from antennas and providing taps for cable distributed systems with cable TV being one popular example.
This has been your brief online intro to power dividers. Hope it’s starting to make sense to you.