UC-EBG on LTCC for 60-GHz Frequency Band Antenna Applications

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    120 Citations (Scopus)


    The relatively high dielectric constant of the low-temperature cofired ceramic (LTCC) substrate materials can reduce the antenna gain and increase the mutual coupling in antenna arrays due to the increased surface-wave power. We present a design of a uniplanar-compact electromagnetic band-gap (UC-EBG) structure on the Ferro A6-S LTCC tape system operating in the 60-GHz frequency band. The UC-EBG design is used with an aperture-coupled microstrip-line-fed patch antenna (ACMPA) and with a 16-element array to increase the antenna gain. The UC-EBG is also used to reduce the mutual coupling between antennas in the E- and H-planes. The performance of the antennas with and without UC-EBG are evaluated with the probe-station and radiation-pattern measurements. In addition, the reflection from the UC-EBG surface is measured using a WR-15 waveguide excitation. Good agreement is achieved between the simulations and the measurements. An increase of up to 4.5 and 2.3 dBi is achieved in the gain for a single element and for a 16-element array, respectively. A reduction of up to 11.8 dB is observed in the E-plane coupling between two patches. The presented design is suitable for electromagnetic shielding, reduction of coupling in integrated LTCC modules, and providing high gain antennas for low-cost millimeter-wave applications.
    Original languageEnglish
    Pages (from-to)2904-2912
    Number of pages9
    JournalIEEE Transactions on Antennas and Propagation
    Issue number10
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed


    • 60 GHz
    • antenna array
    • electromagnetic band-gap (EBG)
    • low-temperature cofired ceramic (LTCC)
    • milimeter-wave
    • patch antenna
    • surface waves


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