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This paper presents a new lumped element model for conventional Marchand baluns. Analyzed by even- and odd-mode method, the equivalent equations are derived for λ/4 coupled lines. Based on the proposed 5th-order equivalent circuit for λ/4 coupled lines, the model parameters can be easily calculated by the derived equations. A GaAs monolithic wideband Marchand balun was implemented to verify the model...
This investigation focuses on setting up a discrete model of the coupling between a TEM field generated inside a TEM cell to a device under test for use in a circuit simulator. In first instance, different microstrips are used as device under test because of their well-defined characteristics. The resulting models of the TEM cell, the microstrips and the electric field coupling between them are explained...
Vias in printed circuit boards and chip packages are known to have significant detrimental impact on signal and power integrity in high-speed communication systems. Recently, concise equivalent circuit models for vias in multilayer configurations have been explored by the authors. The models accurately reflect the important physical properties of vias, since the topology utilized has a one-to-one...
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