A 120-Gb/s 100-145-GHz 16-QAM Dual-Band Dielectric Waveguide Interconnect With Package Integrated Diplexers in Intel 16

• Published in: IEEE solid-state circuits letters Vol. 5; pp. 178 - 181
• Main Authors: Dogiamis, Georgios C., Brown, Thomas W., Prabhu Gaunkar, Neelam, Nam, Ye Seul, Rane, Triveni S., Ravikumar, Surej, Neeli, Vijaya B., Chou, Jessica C., Rami, Said, Swan, Johanna
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bandwidth; CMOS; dielectric waveguide; Dielectric waveguides; Dielectrics; diplexer; Diplexers; Dispersion; dual band; Electromagnetic waveguides; equalization; Error analysis; F-band; flip chip; Frequency division multiplexing; frequency division multiplexing (FDM); interconnect; launcher; Mixers; mmWave; Multilayers; organic package; Power consumption; quadrature amplitude modulation (QAM); Radio frequency; sub-THz; transceiver; Transceivers; wireline
• ISSN: 2573-9603; 2573-9603
• DOI: 10.1109/LSSC.2022.3191526

This letter presents a dual-band superheterodyne transceiver system in Intel 16 operating at 109 and 135 GHz center frequencies with a measured rejection >60 dB within the 11 GHz guard band. The transceiver is flip-chip assembled on a multilayer organic package, which integrates hairpin resonator diplexers and electromagnetic waveguide launchers. A connector assembled on the organic package feeds a 3-4-m long PTFE dielectric waveguide ensuring a stable mechanical connection. This letter demonstrates up to 120 Gb/s data rates with measured error vector magnitudes (EVMs) between −19.2 dB and −16.2 dB at 3-4-m distances with combined power consumption of 1116 mW. This is the first work in the literature reporting beyond 60 Gb/s over dielectric waveguide channels at link distances greater than 1 m. Combining frequency division multiplexing with a low tap count FFE equalizer and sharp on-die analog and RF filtering with a low loss on package diplexer enabled the >100 Gb/s at multimeter distances.