Millimetergolf circuit ontwerp voor niet-coherente diëlektrische golfgeleidercommunicatie

Dielectric waveguides can be used as a low-loss, high-bandwidth channel for mm-Wave signals, making them suitable for high-speed, short-range wired communication links. The increasing performance of digital CMOS technologies has enabled the design of low-cost integrated mm-Wave transceivers. In addition, polymer fibers are cheap and easy to manufacture. This makes dielectric waveguide technology a cost-effective solution compared to optical links. Furthermore, the superior channel characteristics enable faster and longer links compared to copper wireline. This work focuses on noncoherent communication, making the transceiver circuits simpler and more power-efficient, as well as obviating the need for carrier recovery. The introduction of a more linear envelope detection strategy based on rectification enables higher-order modulations. In addition, envelope detectable single-sideband signals are proposed as a means of further increasing the spectral efficiency. On the system level, reflections on electrically-long structures are examined and found to severely degrade the performance. To remedy this, a low-reflection coupler structure is proposed, in addition to using transceivers with well-matched mm-Wave and baseband interfaces. The mm-Wave amplifying circuits themselves can be made stable, robust and isolated by unilateralizing the individual transistor stages. Where matching networks are often designed using ad-hoc methods, this work introduces a systematic approach based on traditional filter-design techniques which offers improved insight into the trade-offs and allows better control over the resulting network performance. Three dielectric waveguide links were designed: ▪ A link operating at 125 GHz using amplitude-shift keying, achieving an unequalized data rate of 27 Gb/s over 1 m of plastic fiber. By applying signal processing techniques, up to 50 Gb/s PAM4 was possible over 3 m. ▪ A dual-band PAM4 link, with bands at 117.5 and 152.5 GHz, combined and separated by an on-chip diplexer. The combined bands reach 100 Gb/s over a 3-m fiber. The low-band operating stand-alone, achieves up to 50 Gb/s over 7 m. ▪ A receiver for an envelope-detectable single-sideband link. The increased spectral efficiency enables higher symbol rates, with NRZ data rates of 36 Gb/s over 1 m and 32 Gb/s over 5 m of fiber being demonstrated.