A new de-embedding technique for arbitrary N-port networks using ideal 1:J transformers

In this paper, a new de-embedding technique that using ideal 1:j transformers is proposed. The proposed method uses cascade connection between an N-port network whose all ports are linked with 1:j transformers and the same N-port network. The ABCD matrices are fully derived in terms of the ideal 1:j transformers and the N-port network with transformers on all ports. To verify the proposed method, sample de-embedding process is performed and compared using Ansys HFSS simulation and the proposed method for a 4-port network. It is found that the magnitude (|S21|) of transmission is 0 dB, the phase difference between the through-port is 0o, and the magnitude between the input and near-/far-end ports is below -300 dB, which prove the validity of the proposed method.