Directional Coupler Instrument Information
A directional coupler is an electronic device that is used to measure the power flowing in a transmission line. It typically has four ports: an input, an output, a coupled port, and a termination port. The coupler allows a portion of the signal to be sampled from the coupled port while the rest continues to flow through the output. This enables the measurement of signal direction and power levels.
Common Uses
- Measuring power levels in transmission lines
- Signal monitoring in communication systems
- Antenna power measurement in radio systems
- Directional signal detection in network testing
Common Types
- Wideband directional coupler
- Bandpass directional coupler
- Dual directional coupler
- Hybrid directional coupler
Measurement Parameter
- Insertion loss
- Directivity
- Coupling factor
- Frequency response
