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

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.
Issue Date:
OSTI Identifier:
The Board of Trustees of the University of Illinois (Urbana, IL) CHO
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2014 Dec 10
Research Org:
The Board of Trustees of the University of Illinois, Urbana, IL (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

Electroless deposition of novel Ag–W thin films
journal, November 2003

InGaAs/GaAs 3D architecture formation by strain-induced self-rolling with lithographically defined rectangular stripe arrays
journal, April 2008

Optical properties of rolled-up tubular microcavities from shaped nanomembranes
journal, April 2009
  • Kiravittaya, S.; Bolaños Quiñones, V. A.; Benyoucef, M.
  • Applied Physics Letters, Vol. 94, Issue 14, Article No. 141901
  • DOI: 10.1063/1.3111813

Nanomechanical Architecture of Strained Bilayer Thin Films: From Design Principles to Experimental Fabrication
journal, December 2005
  • Huang, M.; Boone, C.; Roberts, M.
  • Advanced Materials, Vol. 17, Issue 23, p. 2860-2864
  • DOI: 10.1002/adma.200501353

Thinning and Shaping Solid Films into Functional and Integrative Nanomembranes
journal, April 2012
  • Huang, Gaoshan; Mei, Yongfeng
  • Advanced Materials, Vol. 24, Issue 19, p. 2517-2546
  • DOI: 10.1002/adma.201200574

Self-rolled-up microtube ring resonators: a review of geometrical and resonant properties
journal, January 2011
  • Li, Xiuling
  • Advances in Optics and Photonics, Vol. 3, Issue 4, p. 366-387
  • DOI: 10.1364/AOP.3.000366

Strain induced semiconductor nanotubes from formation process to device applications
journal, September 2008

Modelling and fabrication of low operation temperature microcages with a polymer/metal/DLC trilayer structure
journal, November 2006
  • Luo, J. K.; Huang, R.; He, J. H.
  • Sensors and Actuators A: Physical, Vol. 132, Issue 1, p. 346-353
  • DOI: 10.1016/j.sna.2006.03.004

Modeling of silicon nitride deposition by RF plasma-enhanced chemical vapor deposition
journal, January 1994
  • Masi, Maurizio; Besana, Giambattista; Canzi, Lorenzo
  • Chemical Engineering Science, Vol. 49, Issue 5, p. 669-679
  • DOI: 10.1016/0009-2509(94)85013-5

Versatile Approach for Integrative and Functionalized Tubes by Strain Engineering of Nanomembranes on Polymers
journal, November 2008
  • Mei, Yongfeng; Huang, Gaoshan; Solovev, Alexander A.
  • Advanced Materials, Vol. 20, Issue 21, p. 4085-4090
  • DOI: 10.1002/adma.200801589

Residual stress improvement of platinum thin film in Au/Pt/Ti/p-GaAs ohmic contact by RF sputtering power
journal, November 2012

Free-standing and overgrown InGaAs/GaAs nanotubes, nanohelices and their arrays
journal, February 2000
  • Prinz, V. Ya; Seleznev, V. A.; Gutakovsky, A. K.
  • Physica E: Low-dimensional Systems and Nanostructures, Vol. 6, Issue 1-4, p. 828-831
  • DOI: 10.1016/S1386-9477(99)00249-0

Morphological Differentiation of Neurons on Microtopographic Substrates Fabricated by Rolled-Up Nanotechnology
journal, September 2010
  • Schulze, Sabine; Huang, Gaoshan; Krause, Matthias
  • Advanced Engineering Materials, Vol. 12, Issue 9, p. B558-B564
  • DOI: 10.1002/adem.201080023

From rolled-up Si microtubes to SiOx/Si optical ring resonators
journal, May 2007
  • Songmuang, R.; Rastelli, A.; Mendach, S.
  • Microelectronic Engineering, Vol. 84, Issue 5-8, p. 1427-1430
  • DOI: 10.1016/j.mee.2007.01.089