David Herraiz, Héctor Esteban, Darío Herraiz, Juan J. De Dios, Marcos D. Fernandez, Angel Belenguer, Vicente E. Boria. High-Directivity and Low-Loss Directional Couplers Based on Empty Substrate Integrated Coaxial Line Technology. IEEE Access, 12:35630-35642, 2024. [doi]
Abstract is missing.