High-purity 56–66GHz quadrupler for V-band radio homodyne and heterodyne transceiver applications

A 56–66GHz MMIC quadrupler was also developed for application in V-band wireless communications transceivers. The quadrupler MMIC has low return loss, (better than −15dB on both input and output), −15dBm conversion loss, for a 5dBm input drive signal, and excellent output spectrum purity, (all harmonics lie below −20dBc), with all unwanted harmonic components suppressed by more than 20dB. The quadrupler has two output ports isolated by a Wilkinson power divider. This arrangement allows it to simultaneously provide receive and transmit local oscillator drives for a V-band transceiver. With the solution provided here one quadrupler covers the entire worldwide 57–66GHz unlicensed V-band Gigabit/sec radio bandwidth allocation without need for individual sub-band components.