An Improved Multimode TRL Calibration Method to 110 GHz Based on Coplanar Grounded Waveguides. - Yuxuan Jiang; Changming Liu; Shirong Lv; Congbiao Lei; Guangcheng Zhong; Ping Gong; Shengli Zhang; Liang Xie (IEEE Trans. Instrum. Meas., 2025)