Integrated on-chip transformers: recent progress in the design, layout, modeling and fabrication

Bajwa, Rayan and Yapıcı, Murat Kaya (2019) Integrated on-chip transformers: recent progress in the design, layout, modeling and fabrication. Sensors, 19 (16). ISSN 1424-8220

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On-chip transformers are considered to be the primary components in many RF wireless applications. This paper provides an in-depth review of on-chip transformers, starting with a presentation on the various equivalent circuit models to represent transformer behavior and characterize their performance. Next, a comparative study on the different design and layout strategies is provided, and the fabrication techniques for on-chip implementation of transformers are discussed. The critical performance parameters to characterize on-chip transformers, such as the Q-factor, coupling factor (k), resonance frequency (fSR), and others, are discussed with reference to trade-offs in silicon chip real-estate. The performance parameters and area requirements for different types of on-chip transformers are summarized in tabular form and compared. Several techniques for performance enhancement of on-chip transformers, including the different types of micromachining and integration approaches stemming from MEMS (microelectromechanical systems) technologies are also analyzed. Lastly, the different uses and applications of on-chip transformers are discussed to highlight the evolution of on-chip transformer technology over the recent years and provide directions for future work in this field.
Item Type: Article
Uncontrolled Keywords: on-chip transformer; CMOS integration; RF-MEMS transformer; monolithic; balun; coupling coefficient; modeling; power gain; Q-factor; self-resonance frequency; interleaved layout; stacked layout; transformer characteristic resistance; RFIC; LNA; 5G
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Electronics
Faculty of Engineering and Natural Sciences
Depositing User: Murat Kaya Yapıcı
Date Deposited: 28 Aug 2019 15:54
Last Modified: 26 Apr 2022 10:11

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