A Single-Ended Phase and Impedance Invariant mm-Wave VGPA Based on Shunt CS-CG Topology. - Shaoyu Meng; Yiming Yu; Linqizi Xiao; Chenxi Zhao 001; Yunqiu Wu; Huihua Liu; Kai Kang (IEEE Trans. Circuits Syst. I Regul. Pap., 2025)