Mode-Selective Transmission Line Technology for Ultra-Broadband Analog and Super-High-Speed Digital ICs and Systems

The mode-selective transmission line (MSTL) has recently been proposed and demonstrated as a “smart” transmission medium for low-loss and low-dispersion signal propagation over the entire DC-to-terahertz (THz) frequency range. This longitudinally uniformed guided-wave structure exhibits a unusual frequency-dependent mode-converting behavior from quasi-TEM mode to quasi-TE10 mode as frequency increases. This presentation discusses electrical and structural features of MSTL for the development of self-packaged ultra-broadband analog circuits and interference-reduced super-high-speed digital interconnects for 5G front-end systems and beyond. In particular, broadband-related packaging issues are addressed.