The spectrum available above 24 GHz, commonly referred to as the millimeter wave (mmWave) band, is sparsely occupied and presents opportunities to address future wireless infrastructure demands. Exploiting these higher frequency bands requires new strategies to realize small, low-cost, broad bandwidth and low power hardware solutions. This research seeks to realize practical low-power, ultra-broadband (20GHz+), integrated CMOS phased-array systems for communication and radar applications.