Tunable Phase Shifter With Small Phase Error and Insertion Loss Fluctuation Using a Resonator-Based Structure. - Chuan Shao; Hui Chu; Xiao-Hua Zhu 001; Yong-Xin Guo (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

Multi-Way and Poly-Phase Differential Phase Shifters With Highly Reduced Footprint. - Chuan Shao; Rong Cai; Xinnai Zhang; Kai Xu (Int. J. Circuit Theory Appl., 2025)