A Three-Port Network with Constant Phase Difference Properties (Correspondence)

The 90/spl deg/ hybrid and the 180/spl deg/ TEM magic tee can, at least theoretically, be made to work over bandwidths of 10 to 1, and more. The device described is not limited to 90/spl deg/ or 180/spl deg/. It provides a phase shift between its outputs that is not only constant with frequency, but also capable of being set at any value. In addition, the ratio of the powers delivered to the outputs may be set as desired.