A High-Performance 34 to 40 GHz Frequency Quadrupler Fabricated with Flip-Chip Technology

A rugged flip-chip technology with potential for low cost at high manufacturing volume was employed to fabricate on a single substrate a frequency-quadrupling LO chain that had previously required a total of twelve wire-bonded chips in MMIC technology. A four-to-one reduction in the number of bond wires was achieved. Measurements on a typical circuit showed an output power of 17 plusmn 1 dBm over an output frequency range of 34 to 40 GHz and an input power range of 1 to 19 dBm. Spurious signal power was under -23 dBm. Self-regulating biasing with built-in bypassing simplifies the unit's application