A low-cost high-gain antenna array and its integration with active circuits

At millimeter-wave frequencies, high-gain antenna and its integration with active circuits are of great concern. In this paper, a 2 × 4 antenna array is designed and fabricated on printed circuit board (PCB). At 135 GHz, the maximum gain is 15.4 dBi. It is much higher than that of a conventional on-chip antenna which is usually lower than -10 dBi. Subsequently, the low-cost wire-bonding technology is studied and adopted to integrate this array with active circuits.