A multilayer LTCC solution for integrating 5G access point antenna modules

Francesco Foglia Manzillo, Mauro Ettorre, Markku S. Lahti, Kari T. Kautio, Delphine Lelaidier, Eric Seguenot, Ronan Sauleau

    Research output: Contribution to journalArticleScientificpeer-review

    79 Citations (Scopus)


    An integrated solution for the development of multilayer antenna modules for fifth-generation (5G) communications, based on low temperature cofired ceramic (LTCC), is presented. The design exploits the 3-D integration capabilities of the LTCC process, enabling the realization of a full-corporate feed network (CFN) in vertical configuration. A novel implementation of the CFN employing dielectric-embedded parallel plate waveguides (PPWs) is proposed. The PPW lines are delimited by via-rows. As opposed to standard substrate-integrated waveguide feed networks, guided fields are orthogonal to the via-rows and propagate along the vertical axis of the structure. The CFN feeds four long slots, without any coupling structure, and provides broadband operation. The final prototype comprises 18 LTCC tapes, with a total thickness of 3.4 mm. The measured -10-dB impedance bandwidth spans from 51.2 to 66 GHz (>25.2%). The module generates a fixed broadside beam, but multibeam operation in H-plane can be easily achieved. In the 50-66-GHz band, the peak gain is 14.25 dBi and the average first side-lobe level in H-plane is -20.6 dB. The proposed technology and the design concept are suited for highly integrated millimeter-wave systems, such as access points in the future V-band high data-rate wireless networks.
    Original languageEnglish
    Pages (from-to)2272-2283
    JournalIEEE Transactions on Microwave Theory and Techniques
    Issue number7
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed


    • Antenna-in-package (AiP)
    • corporate feed networks (CFNs)
    • fifth-generation (5G)
    • low temperature cofired ceramic (LTCC)
    • millimeter-wave (mm-wave) antennas
    • mm-wave technologies
    • transverse electromagnetic (TEM) waveguides


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