Inspired by the unique advantages of phased arrays in communication and radar systems, i.e. their capability to increase the channel capacity, signal-to-noise ratio, directivity, and radar resolution, this dissertation presents novel architectures for low-complexity scalable phased arrays to facilitate their widespread use in commercial applications. In phased arrays, phase shifters are one of the key components responsible for adjusting the signal phase across the array elements. In general, phase shifters and their control circuitry play a significant role in determining the complexity and size of conventional phased arrays. To reduce phased arrays’ complexity and size without degrading their performance, two new circuit architectures for scalable phased arrays with a significantly reduced number of phase shifters and control signals are presented. These architectures can be utilized for designing phased arrays in receive as well as transmit mode. The phased arrays designed based on the proposed architectures are intended for applications such as 5G communications and automotive radars for advanced driver assistance systems (ADAS) and autonomous vehicles.PHDElectrical EngineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttps://deepblue.lib.umich.edu/bitstream/2027.42/147494/1/noyan_1.pd
