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2023-06-24
Highly Packaged LTCC Coupler Using Vertically Stacked LC-Elements for 1 and 1.5 Tesla MRI Applications
By
Linzi Liu,

    Dr. Linzi Liu

    School of Electronic and Optical Engineering

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Zheng Pan,

    Dr. Zheng Pan

    School of Electronic and Optical Engineering

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Gang Shi,

    Dr. Gang Shi

    College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology)

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Bo Zhou

    Professor Bo Zhou

    School of Electronic and Optical Engineering

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 111, 55-60, 2023
doi:10.2528/PIERL23043002 | Google Scholar

Abstract
A highly packaged coupler using vertically placed inductors and capacitors (LC)-elements is proposed for 1 and 1.5 Tesla (T) magnetic resonance imaging (MRI) applications. The coupler is made on a 24-layer thickness low temperature co-fired ceramic (LTCC) substrate, and the full integration is reached by heaping up LC-elements in the vertical dimension. The coupler has a smallest reported size of only 0.0035 × 0.0021 × 0.001λg and a wide fractional bandwidth (FBW) of 44%. The measured in-band phase difference between the coupled and through ports and the amplitude imbalance are less than 91°±0.5° and 0.75 dB, respectively. Comparisons and discussions are also implemented.
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Citation
Linzi Liu, Zheng Pan, Gang Shi, and Bo Zhou, "Highly Packaged LTCC Coupler Using Vertically Stacked LC-Elements for 1 and 1.5 Tesla MRI Applications," Progress In Electromagnetics Research Letters, Vol. 111, 55-60, 2023.
doi:10.2528/PIERL23043002
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