COMPENSATING FOR INTRA-PAIR SKEW IN DIFFERENTIAL SIGNALING

摘要

A circuit may be configured to reduce electrical signal degradation. The circuit may include a first trace and a second trace that may be broadside coupled between a first ground plane and a second ground plane. The first and second traces may be configured to carry first and second signals, respectively, of a differential signal. The circuit may also include a first dielectric material disposed between the first trace and the second trace. Further, the circuit may include a second dielectric material disposed between the first trace and the first ground plane and disposed between the second trace and the second ground plane. A difference between a first dielectric constant of the first dielectric material and a second dielectric constant of the second dielectric material may suppress a mode conversion of the differential signal from a differential mode to a common mode.

主权项

1. A circuit configured to reduce electrical signal degradation, the circuit comprising:
a first ground plane; a second ground plane; a first trace disposed between the first ground plane and the second ground plane, the first trace being configured to carry a first signal of a differential signal; a second trace disposed between the first trace and the second ground plane, the second trace being substantially parallel to the first trace and having at least a portion thereof substantially aligned with the first trace, the second trace being configured to carry a second signal of the differential signal; a first dielectric material disposed between the first trace and the second trace and having a first dielectric constant; and a second dielectric material disposed between the first trace and the first ground plane and disposed between the second trace and the second ground plane, the second dielectric material having a second dielectric constant different from the first dielectric constant, a difference between the first dielectric constant and the second dielectric constant suppressing a mode conversion of the differential signal from a differential mode to a common mode.