Many wireless systems could benefit from the ability to transmit and receive on the same frequency at the same time, which is known as in-band full-duplex (IBFD) and/or simultaneous transmit and receive (STAR). This technology could lead to enhanced spectral efficiency for future wireless networks, such as fifth-generation New Radio (5G NR) and beyond, and/or could enable capabilities and applications that were previously considered impossible, such as IBFD with phased array systems. In this workshop, experts from academic and federal research institutions will discuss the various approaches that can be taken to suppress the inherent self-interference that is generated in IBFD phased array systems, and will present both static and adaptive techniques that span across the propagation, analog and digital domains. Presentations will contain details and measured results that encompass unique array topologies, RF cancellation and other isolation methods as well as advances in adaptive beamforming and digital filtering. Throughout this workshop, state-of-the-art IBFD phased array systems that utilize these technologies will be provided as practical examples for various applications.