A W-Band Balanced Power Amplifier Using Broadside Coupled Strip-Line Coupler in SiGe BiCMOS 0.13-µm Technology.
Zhang Ju HouYang YangLeung ChiuXi ZhuEryk DutkiewiczJohn C. VardaxoglouQuan XuePublished in: IEEE Trans. Circuits Syst. I Regul. Pap. (2018)