Reflectionless Design in RF Passive and Active Circuits: Recent Advances and Emerging Trends - Gómez-García,R.; Yang,L.; Malki,M.; Iranpour,N.; Ang,J.D.; Luo,Z.; Zhao,X.-B.; Wang,S.; Li,R.; Munoz-Ferreras,J.-M.; Zhu,X. (IEEE Transactions on Circuits and Systems I: Regular Papers, 2026)