Whether you are in the working sphere of radio technology or simply building an electronic circuit board, you may discover you have the need for an RF directional coupler. This device is designed to help divert, or couple, a certain amount of usually electromagnetic power off of the flow in a line. This kind of coupler is a passive device, which means it should not contribute energy or gain power as it functions.
The Fundamentals of Directional Couplers
An RF directional coupler can become complex, but at a base level, there are only four elements to consider.
1. The first port is often called the input port or the incidental port. It is where the supply of energy enters the coupler.
2. The second port is usually named the output port, but sometimes it is called the transmitted port. This port is the main point where energy exits … Read the rest