TWang
Junior Member level 1

Hi everyone:
When i'm studying the wilkinson divider part of the Microwave Engineering (by D.M. Pozar). There's one question that confuses me. In Chap7.3 (Wilkinson power divider), it says the Wilkinson divider can be lossless when outputs are matched, but in Chap7.1 (Basic properties of dividers and couplers) it says a three port network cannot be lossless, reciprocal and matched at all ports. These two statements seem to be inconsistant.
According to the Chap4.3(Reciprocal networks and lossless networks) , the S matrix of a lossless network should be unitary, but the ideal S matrix of Wilkinson Divider is not.
Could anyone answer this question for me ? Thanks.
When i'm studying the wilkinson divider part of the Microwave Engineering (by D.M. Pozar). There's one question that confuses me. In Chap7.3 (Wilkinson power divider), it says the Wilkinson divider can be lossless when outputs are matched, but in Chap7.1 (Basic properties of dividers and couplers) it says a three port network cannot be lossless, reciprocal and matched at all ports. These two statements seem to be inconsistant.
According to the Chap4.3(Reciprocal networks and lossless networks) , the S matrix of a lossless network should be unitary, but the ideal S matrix of Wilkinson Divider is not.
Could anyone answer this question for me ? Thanks.