Carrier synchronisation for multiband RF interconnect (MRFI) to facilitate chip‐to‐chip wireline communication

A hardware‐efficient carrier synchronisation technique for multiband RF interconnect system is proposed. This method takes full advantage of the wireline channel's quasi‐invariant nature for achieving both energy/cost‐efficient system designs. For instance, now easily decouple quadrature signals’ phase and magnitude errors by using 1‐bit analogue‐to‐digital converter (ADC), which saves substantial power and area than that of conventional methods where the ADC with high‐speed/resolution is necessary. Furthermore, the algorithm can be carried out by using a simple finite‐state machine and no baseband processor is required. Simulation and measurement results show that quasi‐ideal carrier synchronisation can be achieved with the proposed method.