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A novel 3-way rectangular power divider is proposed which is a modified version of the Bagley power divider. The method of least squares is developed for its design and optimization, which determines the line section lengths and widths. The design specifications are made on the desired values of scattering parameters, which tend to minimize the input reflection coefficient and realize the desired...
Based on the multi-open-stub structure, a new phase shifter with lower loss is developed. What's more, the equivalent circuit of this phase shifter is proposed and its validity can be proved by the accordance of the theoretical and simulated results. In the present butterfly structure, as interval between different branch is λ/4, the reflection of each branch can be offset, thus the return loss can...
The wide frequency circuit models of potential and current transformers (PT/CT) is indispensable in accurately simulating the electromagnetic interference from primary system to the secondary system caused by the very fast transient over-voltages through instrument transformers in gas-insulated substation. This paper presents a systematic methodology for establishing the high-frequency (0.1 MHz to...
The paper improves a new method to set up the high frequency circuit model based on scattering parameters equal division. At first, divide the measured scattering parameters of two-port network equally for several times so that the two-port network can be presented as the sub-networks connected in series. Then transform the divided scattering parameters into admittance parameters, and establish π-type...
A general equivalent-circuit-based method for the de-embedding of scattering parameters is presented. An equivalent circuit representation is used to model the embedding package. The parameters in the models are estimated with a statistical method using measured data from all de-embedding standards jointly together. Hence, it is possible to assess parameter estimates and their variance and covariance...
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