Abstract: An interface circuit, comprising: a signal line having signal, auxiliary and connection nodes defined therealong, the connection node for connection to a transmission line; signal-handling circuitry connected to the signal line at the signal node; an auxiliary circuit connected to the signal line at the auxiliary node; a signal pair of inductors connected in series along the signal line adjacent to and either side of the signal node; and an auxiliary pair of inductors connected in series along the signal line adjacent to and either side of the auxiliary node, wherein: the signal pair of inductors are configured to have a mutual coupling defined by a coupling coefficient kS; the auxillary pair of inductors are configured to have a mutual coupling defined by a coupling coefficient kA; and kS has a positive value and kA has a negative value.

Abstract: An interface circuit, comprising: a signal line having signal, auxiliary and connection nodes defined therealong, the connection node for connection to a transmission line; signal-handling circuitry connected to the signal line at the signal node; an auxiliary circuit connected to the signal line at the auxiliary node; a signal pair of inductors connected in series along the signal line adjacent to and either side signal node; and an auxiliary pair of inductors connected in series along the signal line adjacent to and either side of the auxiliary node, wherein: the signal pair of inductors are configured to have a mutual coupling defined by a coupling coefficient kS; the pair of inductors are configured to have a mutual coupling defined by a coupling coefficient kA; and kS has a positive value and kA has a negative value.

Abstract: The present disclosure relates to phase alignment, in particular to phase alignment circuitry (and parts thereof) for example for use in a multiplexer or other circuitry in which data is transmitted from one stage to another. Consideration is given to phase detection and phase rotation. Such circuitry may be implemented as integrated circuitry, for example on an IC chip.