60 GHz digitally controllable and sequentially rotated fed antenna array

Sixteen-chain sequentially rotated fed antenna array on low-temperature cofired ceramic substrate is presented. A 60 GHz broadband circular polarised (CP) stacked rectangular patch antenna is implemented as an element. All the feedlines have the same length which is differentiated from conventional T-junction divider feeder. By this way, several drawbacks of conventional sequential rotated array c...