ACS-Fed Antennas with Orthogonal Pattern Diversity for mmWave 5G Mobile Terminals

A compact asymmetric co-planar strip (ACS)-fed mmWave 5G antenna with 6.5-7.5 dBi end-fire gain is presented. Proposed antenna is wideband operating from 26-32 GHz with fractional bandwidth of 20%. Proposed single element antenna is having dimensions of 6 × 10 mm
²
thus occupying small physical footprint which results in easier integration with mobile terminals. Proposed antenna achieves 1-dB gain bandwidth of 20% which determines the pattern integrity over whole operating band. Front-to-back ratio is more than 13 dB over the entire operating band. Orthogonal pattern diversity is achieved at 28 GHz thereby enabling smartphone usage in both portrait as well as landscape mode. Proposed antenna achieves reasonable gain for the available aperture.