Broadband High Power Low Insertion Loss Dual Directional Loop Couplers

Specifically, dual directional loop coupler is composed of a circular waveguide and multiple coupled waveguides. By adjusting the coupling strength between the coupling .
Waveguide and the loop waveguide, energy directional transmission between different waveguides can be achieved. The core component of a directional loop coupler is a circular dielectric block, usually composed of a tubular or sheet-like block, with a circular microstrip line inside the block. When a high-frequency signal enters the annular dielectric block from one of the ports, it will gradually transfer along the circular path in a short period of time and eventually be distributed to other ports. During the transfer process, due to the resonance characteristics of the dielectric block and the fixed path of the circuit, the phase shift difference is maintained at around 90 degrees, achieving precise power distribution.