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Analysis and modeling of interstacked transformers for mm-wave applications

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Abstract

The analysis and modeling of monolithic interstacked transformers for mm-wave applications is addressed. The performance advantages of the interstacked structure are demonstrated by using the most important figures of merit for integrated transformers and a physic-based scalable lumped model is proposed. The model components are calculated with closed-form expressions that make use of geometrical and technological parameters. The accuracy of the proposed model is demonstrated by comparison with electromagnetic data in a wide frequency range. Maximum errors are below 5, 7.5, and 2% for magnetic coupling factor, quality factor, and self-resonance frequency, respectively. High accuracy is also achieved in the modeling of S-parameters up to the self-resonance frequency.

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Author notes

  1. Giuseppina Sapone

    Present address: Infineon Technologies Austria AG, 9500, Villach, Austria

  2. Vittorio Giammello

    Present address: ST-Ericsson, 95121, Catania, Italy

Authors and Affiliations

  1. DIEEI, Facoltà di Ingegneria, Università di Catania, V.le A. Doria 6, 95125, Catania, Italy

    Egidio Ragonese, Giuseppina Sapone, Vittorio Giammello & Giuseppe Palmisano

  2. STMicroelectronics, 95121, Catania, Italy

    Egidio Ragonese

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  1. Egidio Ragonese
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  2. Giuseppina Sapone
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  3. Vittorio Giammello
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  4. Giuseppe Palmisano
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Correspondence to Egidio Ragonese.

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Ragonese, E., Sapone, G., Giammello, V. et al. Analysis and modeling of interstacked transformers for mm-wave applications. Analog Integr Circ Sig Process 72, 121–128 (2012). https://doi.org/10.1007/s10470-011-9822-3

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  • DOI: https://doi.org/10.1007/s10470-011-9822-3

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