Mitsuyoshi Kishihara, Masaya Takeuchi, Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta. Design and Fabrication of PTFE Substrate Integrated Waveguide Coupler by SR Direct Etching. IEICE Trans. Electron., 104-C(9):446-454, 2021. [doi]
Abstract is missing.