1E0320-3

RF Directional Coupler

The RF directional coupler is an electrical component that can measure the magnitude of an incident or reflected wave in an electrical transmission line. The 1E0320-3 RF Directional Coupler is a special type of directional coupler designed for the microwave frequency range.

Application Field

The most common applications of the 1E0320-3 RF Directional Coupler include microwave radio systems, RF power measurements, factory automation, transmitting antenna system measurements, power splitters, medical instruments, and radar antennas.In microwave radio systems, the 1E0320-3 directional coupler acts as a power splitter by providing a defined portion of the power to another line or device. This allows the radio system to accurately measure the power transmitted by the main antenna and to compensate for any absorbed energy lost in the transmission line. It is also used in factory automation for various measurements. The coupler is used to measure the signal power to ensure that the process parameters, such as temperature, pressure, and humidity, remain within acceptable limits. In addition, the 1E0320-3 directional coupler is used in measurements of transmitting antenna systems to detect any phase or frequency distortion in the transmission system. It is also used in power splitters to accurately divide the input power between two or more output lines. Finally, the 1E0320-3 directional coupler is used in medical instruments such as MRI scanners, to detect any signal interference that may cause image distortion. It is also used in radar antenna systems to measure the magnitude of the reflected signal.

Working Principle

The 1E0320-3 RF Directional Coupler uses a directional coupler to measure the magnitude of the incident and reflected signal power in a transmission line such as an antenna or coaxial cable. It is designed to operate in the microwave frequency spectrum.The 1E0320-3 directional coupler works by splitting the incident signal power between two internal cavities using an internal coupler. One cavity receives the incident signal power from the transmission line, while the other receives the reflected signal power from the transmission line. Both the incident and reflected signal power are then fed into a directional coupler where they are combined and the incident signal power is measured. By measuring the incident and reflected signal power, the 1E0320-3 directional coupler can accurately measure the power transmitted over the transmission line.The directional coupler is designed to have low insertion loss and high directivity to ensure accurate readings. This is achieved by the use of a hybrid ring, which is a 3dB coupler connected to two power dividers. The hybrid ring ensures that only the incident signal power is measured, while the power dividers provide isolation between the two cavities, minimizing interference.