Rolled-up transformer structure for a radiofrequency integrated circuit (RFIC)

Li, Xiuling; Huang, Wen

Title: Rolled-up transformer structure for a radiofrequency integrated circuit (RFIC)

Patent · Tue Jan 27 00:00:00 EST 2015

OSTI ID:1168679

Li, Xiuling; Huang, Wen

A rolled-up transformer structure comprises a multilayer sheet having a rolled configuration comprising multiple turns about a longitudinal axis. The multilayer sheet comprises more than one conductive pattern layer on a strain-relieved layer, including a first conductive film and a second conductive film separated from the first conductive film in a thickness direction. The first conductive film comprises an even number of primary conductive strips, where each primary conductive strip has a length extending in the rolling direction, and the second conductive film comprises an even number of secondary conductive strips, where each secondary conductive strip has a length extending in the rolling direction. In the rolled configuration, turns of the primary conductive strips and turns of the secondary conductive strips wrap around the longitudinal axis. The primary conductive strips serve as a primary winding and the secondary conductive strips serve as a secondary winding of the rolled-up transformer structure.

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Research Organization:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-07ER46471

Assignee:: The Board of Trustees of the University of Illinois (Urbana, IL)

Patent Number(s):: 8,941,460

Application Number:: 14/051,208

OSTI ID:: 1168679

Country of Publication:: United States

Language:: English

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