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UMC balun and transformer designs

EMX was used to design a number of baluns and transformers for UMC's IP libraries. The detailed results were published in a paper at CICC '07. This is an example of an 802.11B balun. The associated measurements show excellent correlation with simulations. The simulations were done by including the pad frames to avoid all artifacts due to de-embedding.

umcbalun

Comparison of insertion loss and phase imbalance.

Comparison of LKQ characteristics of the associated transformer (without the MIM caps).

 

 

 

 

 

CICC '07 presentation on transformers and baluns

CICC paper

CICC slides