High Gain Planar Segmented Antenna for mmWave Phased Array Applications

초록

A new high gain antenna structure is proposed for mmWave 5G and potentially for B5G and 6G applications. The proposed antenna is configured by a planar segmented patch structure which has a radiator size comparable to the conventional patch but achieves more than 3 dB gain enhancement without a help of superstrate stack-up layer. The proposed planar segmented antenna (PSA) induces multiple magnetic currents through multiple segmented conductors, resulting in a strong magnetic field circulation around the conductors. Only one conductor requires an excitation port and each segmented conductor has a shorting pin to synchronize resonance currents. To verify the PSA operation, several prototypes were fabricated at 28 GHz with the identical volume of 1.213 λ0 × 1.213 λ0 × 0.113 λ0 including the ground plane. The maximum measured impedance bandwidth of the single PSA was 23.1%. Further, the measured maximum antenna gain was 11.5 dBi whereas the same sized reference patch antenna showed only 6.3 dBi. IEEE

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