What are Quadrature Hybrids?

Couplers 

What are Quadrature Hybrid Couplers?

1 Answer
Can you answer this question?

Editorial Team - everything RF

Feb 21, 2019

Quadrature Hybrid is another name for a 90° Hybrid Coupler. They are four port devices that split an input signal equally between two output ports with a 90 degree phase difference between them. As seen in the diagram below, an input signal is fed from port A, we get equal amplitude signals at ports C & D with 90° phase difference. Port B is isolated.