Design of Wideband Planar Inverted Cone Millimeterwave Antenna based on Frequency Selective Surface for Gain Enhancement

This paper proposes a wideband millimeter wave (mmW) antenna based on a frequency selective surface (FSS) for gain improvement for 5 G cellular communication. The presented antenna is a planar inverted cone antenna (PICA) which resonates at 28 GHz in the FR2 band and has a footprint of $11 \times 12 \times 1.6 \mathrm{~mm}^{3}$. The antenna gain is improved by integrating an FSS superstrate implemented with $6 \times 6$ unit elements antenna that used as a reflecting surface. Proposed antenna has a impedance bandwidth -10 dB at 12.6 GHz $(25.2-37.8 \mathrm{GHz})$ and a peak gain of 7.73 dB at 28 GHz. Due to FSS, the proposed antenna gain is improved by about 4.02 dB. The far-field patterns in H and E planes are at 90° to the antenna boresight axis. A prototype is fabricated to verify the simulation results. Due to compactness, wideband, and high gain, the proposed antenna may be a great choice for 5 G communication.

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