Search: onr:"swepub:oai:DiVA.org:kth-143665" >
Permeability Enhanc...
Permeability Enhancement by Multilayer Ferromagnetic Composites for Magnetic-Core On-Chip Inductors
-
- Shah, Umer (author)
- KTH,Mikro- och nanosystemteknik,RF MEMS
-
- Liljeholm, Jessica (author)
- Silex Microsystems
-
- Ebefors, Thorbjörn (author)
- Silex Microsystems
-
show more...
-
- Oberhammer, Joachim (author)
- KTH,Mikro- och nanosystemteknik,RF MEMS
-
show less...
-
(creator_code:org_t)
- IEEE Press, 2014
- 2014
- English.
-
In: IEEE Microwave and Wireless Components Letters. - : IEEE Press. - 1531-1309 .- 1558-1764. ; 24:10, s. 677-679
- Related links:
-
http://ieeexplore.ie...
-
show more...
-
https://kth.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- This letter reports about unpatterned ferromagnetic NiFe/AlN multilayer composites used as advanced magnetic core materials for on-chip and interposer integrated inductances. The proposed composite structure reduces RF induced currents and thus pushes the permeability cutoff to beyond 3.7 GHz, which is by a factor of 7.1 higher than for homogeneous NiFe layers of same thickness. To the best knowledge of the authors, we achieve the highest effective relative permeability of 28 at 1 GHz, highest ferromagnetic resonance frequency and highest inductance enhancement factor above 1 GHz ever reported for devices based on on-chip unpatterned NiFe magnetic cores. A single loop inductor is also implemented as a technology demonstrator, achieving an inductance enhancement of 4.8 and a quality factor enhancement of 4.5 at 400 MHz.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Magnetic materials
- microstrip
- NiFe multilayer composite
- permeability
- permittivity
- micromachined inductors
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database