Characterization of an experimental ferrite LTCC tape system for microwave and millimeter-wave applications

J. Bray, Kari Kautio, L. Roy

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

An experimental-low temperature cofired ceramic (LTCC) ferrite tape system is characterized using circuits that are fabricated from the very material under test. Such in situ circuits provide data that are thought to be more representative of the performance obtainable by more complicated circuitry that will eventually be made from the same material using the same fabrication method. Emphasis is placed on simple measurements that can be performed using a minimum amount of equipment. For the first time, a compact in situ LTCC solenoid transformer is used to measure the magnetostatic properties of the ferrite, yielding a measured saturation flux density of 230 mT, a remanence of 136 mT, and a coercivity of 688 A/m. The peak linear relative permeability of the ferrite is 97 and its Curie temperature is low, only 117/spl deg/C. A novel two-port line-connected ring resonator is used to characterize the material in the 6-40 GHz range. At frequencies above 20 GHz, the relative permittivity of the ferrite is 11.0, whereas its loss tangent ranges from 0.002 to 0.004, demonstrating the ferrite's suitability for use in microwave and millimeter-wave circuitry.
Original languageEnglish
Pages (from-to)558 - 565
Number of pages8
JournalIEEE Transactions on Advanced Packaging
Volume27
Issue number3
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

Fingerprint

Millimeter waves
Tapes
Ferrite
Microwaves
Temperature
Magnetostatics
Networks (circuits)
Remanence
Solenoids
Curie temperature
Coercive force
Resonators
Permittivity
Fluxes
Fabrication

Keywords

  • Curie temperature
  • ceramic packaging
  • coercive force
  • ferrites
  • loss measurement
  • magnetic hysteresis
  • microwave circuits
  • microwave measurement
  • microwave phase shifters
  • millimetre wave circuits
  • permittivity measurement
  • remanence
  • resonators
  • solenoids
  • packaging
  • microwave resonators

Cite this

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title = "Characterization of an experimental ferrite LTCC tape system for microwave and millimeter-wave applications",
abstract = "An experimental-low temperature cofired ceramic (LTCC) ferrite tape system is characterized using circuits that are fabricated from the very material under test. Such in situ circuits provide data that are thought to be more representative of the performance obtainable by more complicated circuitry that will eventually be made from the same material using the same fabrication method. Emphasis is placed on simple measurements that can be performed using a minimum amount of equipment. For the first time, a compact in situ LTCC solenoid transformer is used to measure the magnetostatic properties of the ferrite, yielding a measured saturation flux density of 230 mT, a remanence of 136 mT, and a coercivity of 688 A/m. The peak linear relative permeability of the ferrite is 97 and its Curie temperature is low, only 117/spl deg/C. A novel two-port line-connected ring resonator is used to characterize the material in the 6-40 GHz range. At frequencies above 20 GHz, the relative permittivity of the ferrite is 11.0, whereas its loss tangent ranges from 0.002 to 0.004, demonstrating the ferrite's suitability for use in microwave and millimeter-wave circuitry.",
keywords = "Curie temperature, ceramic packaging, coercive force, ferrites, loss measurement, magnetic hysteresis, microwave circuits, microwave measurement, microwave phase shifters, millimetre wave circuits, permittivity measurement, remanence, resonators, solenoids, packaging, microwave resonators",
author = "J. Bray and Kari Kautio and L. Roy",
year = "2004",
doi = "10.1109/TADVP.2004.831873",
language = "English",
volume = "27",
pages = "558 -- 565",
journal = "IEEE Transactions on Advanced Packaging",
issn = "1521-3323",
publisher = "IEEE Institute of Electrical and Electronic Engineers",
number = "3",

}

Characterization of an experimental ferrite LTCC tape system for microwave and millimeter-wave applications. / Bray, J.; Kautio, Kari; Roy, L.

In: IEEE Transactions on Advanced Packaging, Vol. 27, No. 3, 2004, p. 558 - 565.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Bray, J.

AU - Kautio, Kari

AU - Roy, L.

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AB - An experimental-low temperature cofired ceramic (LTCC) ferrite tape system is characterized using circuits that are fabricated from the very material under test. Such in situ circuits provide data that are thought to be more representative of the performance obtainable by more complicated circuitry that will eventually be made from the same material using the same fabrication method. Emphasis is placed on simple measurements that can be performed using a minimum amount of equipment. For the first time, a compact in situ LTCC solenoid transformer is used to measure the magnetostatic properties of the ferrite, yielding a measured saturation flux density of 230 mT, a remanence of 136 mT, and a coercivity of 688 A/m. The peak linear relative permeability of the ferrite is 97 and its Curie temperature is low, only 117/spl deg/C. A novel two-port line-connected ring resonator is used to characterize the material in the 6-40 GHz range. At frequencies above 20 GHz, the relative permittivity of the ferrite is 11.0, whereas its loss tangent ranges from 0.002 to 0.004, demonstrating the ferrite's suitability for use in microwave and millimeter-wave circuitry.

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KW - ceramic packaging

KW - coercive force

KW - ferrites

KW - loss measurement

KW - magnetic hysteresis

KW - microwave circuits

KW - microwave measurement

KW - microwave phase shifters

KW - millimetre wave circuits

KW - permittivity measurement

KW - remanence

KW - resonators

KW - solenoids

KW - packaging

KW - microwave resonators

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DO - 10.1109/TADVP.2004.831873

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JO - IEEE Transactions on Advanced Packaging

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