A low-cost W-band MIC mixer using flip-chip technology

The authors describe a novel mixer fabricated using a unique low-cost approach to achieve effective conversion performance. By utilizing flip-chip GaAs Schottky diodes mounted on a duroid substrate, this radio frequency (RF) probable mixer achieves 11.3-dB conversion loss at 77 GHz with an IF frequency of 500 MHz. This new technology demonstrates an affordable alternative to standard millimeter-wave circuit fabrication while offering the capability to integrate a variety of device technologies in the same circuit.