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A simple and effective technique for designing transformer-type Marchand baluns is presented in this paper. The coupled-line sections required in a Marchand balun design are realized using planar transformers with a scalable model. The proposed design technique enables the prediction and optimization of Marchand balun performance over a wide range of layout and process parameters. To demonstrate the optimization process, Marchand baluns are designed for implementation using silicon and glass integrated passive device (IPD) technologies. Finally, experimental verification shows very good agreement between the modeled and measured results, thereby validating the IPD design optimization.
Components, Packaging and Manufacturing Technology, IEEE Transactions on (Volume:2 , Issue: 8 )
Date of Publication: Aug. 2012