US Patent 11621499 Antenna apparatus

An antenna apparatus includes a ground plane; a first patch antenna pattern having a first bandwidth and spaced apart from the ground plane; a second patch antenna pattern spaced apart from the ground plane and the first patch antenna and overlapping at least a portion of the first patch antenna pattern; and guide vias disposed between the first patch antenna pattern and the ground plane and electrically connecting the first patch antenna pattern to the ground plane. The second patch antenna pattern has a second bandwidth corresponding a frequency higher than a frequency of the first bandwidth. The guide vias are disposed along a first side of the first patch antenna pattern.