A Low-Cost W-Band Mic Mixer Using Flip-Chip Technology

This letter describes a novel mixer fabricated using a unique low-cost approach to achieve effective conversion performance, By utilizing hip-chip GaAs Schottky diodes mounted on a duroid substrate, this radio frequency (RF) probeable 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.