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1 results

  • 28 GHz compact dipole antenna array integrated in fan-out eWLB package

  • Imran Aziz, Dapeng Wu, Erik Öjefors, Johanna Hanning, Dragos Dancila
  • Journal:
    International Journal of Microwave and Wireless Technologies / Volume 14 / Issue 10 / December 2022
    Published online by Cambridge University Press:
    21 February 2022, pp. 1369-1377
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  • In this paper, we present a 28 GHz antenna array in package which covers the n257 and n258 frequency bands designated for 5G applications. The dipole antenna array is placed on one of the two re-distribution layers in the fan-out eWLB (embedded Wafer Level Ball Grid Array) package. For TX and RX, separate but identical antenna arrays are placed on each side of the die. The paper presents a novel horn-shaped heatsink which not only dissipates the heat, but also improves the radiation performance. The four-elements dipole array has the impedance bandwidth of almost 6 GHz (24–30 GHz) and shows a maximum realized gain of 9.5 dBi. Beam-steering in ± 35 deg is achieved in the azimuth plane (H-plane) by providing different phases to the dipoles through the chip. The measurements nicely agree with the simulation results.