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Microreplicated RF toroidal inductor

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8 Author(s)
V. Ermolov ; Nokia Res. Center, Helsinki, Finland ; T. Lindstrom ; H. Nieminen ; M. Olsson
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This paper reports on the modeling and fabrication of a truly three-dimensional high-quality-factor toroidal inductor using polymer replication processes. The critical dimensions are in the micrometer range, and the applied manufacturing method is based on polymer replication. Electrical measurements show that the inductor with an inductance of 6.0 nH exhibits a peak quality factor of 50 at a frequency of 3 GHz. Model verified by the measurement results shows that further improvement is still possible. Furthermore, the applied manufacturing technique can be extended to become a flexible packaging platform.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:52 ,  Issue: 1 )