1Z0364-3

RF Directional Coupler

A RF directional coupler, like the 1Z0364-3, is a type of directional coupler which uses a transmission line to measure the power of a signal travelling in one direction from port to port. Its use is simple, yet it can be quite effective in providing precise power measurements. Generally, these couplers are used in wideband applications, including cable infrastructure, radio, and communications networks.

Application Field

The 1Z0364-3 directional coupler is primarily used in two-way RF communications, it can be used for signal modulation and demodulation, microwave communication systems, radio data communication systems, and signal detection systems. It also finds applications in remote sensing and the monitoring of network traffic. Additionally, the 1Z0364-3 can be used for the recording of data and can be used to detect a variation in the signal level or phase.

Working Principle

A directional coupler is an electrical device which uses a transmission line to measure the power of a signal travelling in one direction from port to port. The power measurement is done by measuring the line losses over a given period of time. The 1Z0364-3 operates on a frequency range of 2 MHz to 10 GHz, and has a coupling factor of 30 dB. The basic working principle of the 1Z0364-3 is that it takes advantage of the impedance mismatch between a signal line and a shorted line,and the difference of the reflections of the two lines that occur when a signal is applied. The signal travels through the junction and is separated into two branches, a measuring branch and a reference branch, which are then connected to a power meter. When the electrical current meets the two branches, the measured branch has the signal level reduced from the source, while the reference branch does not since it is shorted. This difference between the two power levels is the basis of the measurements.

Conclusion

The 1Z0364-3 directional coupler is designed specifically for applications in two-way RF communications, where precise power measurements are critical. It has wide applications, including cable infrastructure, remote sensing, signal modulation and demodulation, and signal detection systems. Its basic principle is based on the impedance mismatch between a signal line and a shorted line, and it measures the power of a signal travelling in one direction from port to port by measuring the line losses.