Review on spin-wave RF applications

This review explores the progress of spin-wave technology, emphasizing magnonics as a potential solution to modern challenges in radio frequency (RF) communication systems. To ensure clarity, the first two sections of the review reiterate premises of the magnonics, outline key milestones in spin-wave research, briefly review the state-of-the-art for technology and materials, as well as highlight potential directions for future developments. The third section is dedicated to spin-wave RF applications developed over the past 50 years, focusing on selected passive fundamental devices (filters, power limiters, delay lines, phase shifters, directional couplers, resonators, etc) and their operating principles. In the last section, the review further discusses the main advantages of spin-waves for RF applications while highlighting potential concerns, such as insertion losses, linearity and power capacity. Finally, potential solutions to address these challenges are proposed.