A 6-18-GHz 6-bit Full-360° Vector-Sum Phase Shifter With Low Error in 40-nm CMOS. - Bofan Chen; Zhiqun Li; Wei Shi; Yan Yao; Zhi-Ying Xia; Bing-Yan Qiu; Hao Ji (IEEE Trans. Very Large Scale Integr. Syst., 2024)