[ 2 ] One blocker moving ( 1 m / s ) Horn ( 22 . 4 dBi , 12 ˚ ) Patch ( 4 . 3 dBi / 2 . 2 dBi , 58 ˚ ) 2 . 2 / 1 . 2 m 1 . 2 m 60 GHz Series of Blockage event duration ( threshold 5 dB ) 780 ~ 1839 ms ( Horn ) 640 ~ 1539 ms ( Patch )