Passive RF band-pass filters in an LTCC module made by fine-line thick-film pastes

Markku Lahti (Corresponding Author), Vilho Lantto

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)

    Abstract

    Low-temperature co-fired ceramic (LTCC) materials offer a good possibility to bury passive components and to produce compact electronic circuits. These properties were utilised in this study to realise a passive band-pass RF filter in the LTCC module. The filter consisted of planar inductors, capacitors and microstrip lines. The component values of the filter structure were determined by using the APLAC circuit simulator. Commercial fine-line thick-film Au paste and shrinkage-matched LTCC Ag pastes were used to print narrow conductor lines by gravure-offset-printing on different LTCC sheets. Narrow conductor lines down to 50 μm wide were printed successfully without shrinkage mismatch during firing. A network analyser and different microscopes were used to study, respectively, the electrical and material properties of the patterns and filters. Variations of the printed line widths and of the electrical values of the patterns and filters were about ±10%. The highest centre frequency of the realised filters was about 2 GHz.
    Original languageEnglish
    Pages (from-to)1997-2000
    Number of pages4
    JournalJournal of the European Ceramic Society
    Volume21
    Issue number10-11
    DOIs
    Publication statusPublished - 2001
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Ointments
    Bandpass filters
    Thick films
    Offset printing
    Temperature
    Networks (circuits)
    Microstrip lines
    Ceramic materials
    Linewidth
    Materials properties
    Electric properties
    Microscopes
    Capacitors
    Simulators

    Cite this

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    title = "Passive RF band-pass filters in an LTCC module made by fine-line thick-film pastes",
    abstract = "Low-temperature co-fired ceramic (LTCC) materials offer a good possibility to bury passive components and to produce compact electronic circuits. These properties were utilised in this study to realise a passive band-pass RF filter in the LTCC module. The filter consisted of planar inductors, capacitors and microstrip lines. The component values of the filter structure were determined by using the APLAC circuit simulator. Commercial fine-line thick-film Au paste and shrinkage-matched LTCC Ag pastes were used to print narrow conductor lines by gravure-offset-printing on different LTCC sheets. Narrow conductor lines down to 50 μm wide were printed successfully without shrinkage mismatch during firing. A network analyser and different microscopes were used to study, respectively, the electrical and material properties of the patterns and filters. Variations of the printed line widths and of the electrical values of the patterns and filters were about ±10{\%}. The highest centre frequency of the realised filters was about 2 GHz.",
    author = "Markku Lahti and Vilho Lantto",
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    language = "English",
    volume = "21",
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    Passive RF band-pass filters in an LTCC module made by fine-line thick-film pastes. / Lahti, Markku (Corresponding Author); Lantto, Vilho.

    In: Journal of the European Ceramic Society, Vol. 21, No. 10-11, 2001, p. 1997-2000.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Passive RF band-pass filters in an LTCC module made by fine-line thick-film pastes

    AU - Lahti, Markku

    AU - Lantto, Vilho

    PY - 2001

    Y1 - 2001

    N2 - Low-temperature co-fired ceramic (LTCC) materials offer a good possibility to bury passive components and to produce compact electronic circuits. These properties were utilised in this study to realise a passive band-pass RF filter in the LTCC module. The filter consisted of planar inductors, capacitors and microstrip lines. The component values of the filter structure were determined by using the APLAC circuit simulator. Commercial fine-line thick-film Au paste and shrinkage-matched LTCC Ag pastes were used to print narrow conductor lines by gravure-offset-printing on different LTCC sheets. Narrow conductor lines down to 50 μm wide were printed successfully without shrinkage mismatch during firing. A network analyser and different microscopes were used to study, respectively, the electrical and material properties of the patterns and filters. Variations of the printed line widths and of the electrical values of the patterns and filters were about ±10%. The highest centre frequency of the realised filters was about 2 GHz.

    AB - Low-temperature co-fired ceramic (LTCC) materials offer a good possibility to bury passive components and to produce compact electronic circuits. These properties were utilised in this study to realise a passive band-pass RF filter in the LTCC module. The filter consisted of planar inductors, capacitors and microstrip lines. The component values of the filter structure were determined by using the APLAC circuit simulator. Commercial fine-line thick-film Au paste and shrinkage-matched LTCC Ag pastes were used to print narrow conductor lines by gravure-offset-printing on different LTCC sheets. Narrow conductor lines down to 50 μm wide were printed successfully without shrinkage mismatch during firing. A network analyser and different microscopes were used to study, respectively, the electrical and material properties of the patterns and filters. Variations of the printed line widths and of the electrical values of the patterns and filters were about ±10%. The highest centre frequency of the realised filters was about 2 GHz.

    U2 - 10.1016/S0955-2219(01)00159-5

    DO - 10.1016/S0955-2219(01)00159-5

    M3 - Article

    VL - 21

    SP - 1997

    EP - 2000

    JO - Journal of the European Ceramic Society

    JF - Journal of the European Ceramic Society

    SN - 0955-2219

    IS - 10-11

    ER -