High-speed pluggable rigid-end flex circuit

摘要

High-speed pluggable rigid-end flex circuit. A circuit includes a flexible section, rigid section, connector disposed on the rigid section, and electrically conductive signal transmission line electrically coupled to the connector. The flexible section includes a first portion of a flexible insulating layer. The rigid section includes a second portion of the flexible insulating layer and a rigid insulating layer disposed on the second portion of the flexible insulating layer. The connector is configured to form a pluggable conductive connection. The electrically conductive signal transmission line includes a first signal trace having a root mean square surface roughness below 20 micrometers and a filled signal via configured to pass through at least a portion of the rigid insulating layer. The flexible and rigid insulating layers have a dissipation factor equal to or below a ratio of 0.004 and a dielectric constant equal to or below a ratio of 3.7.

主权项

1. A circuit comprising:
a flexible section including a first portion of a flexible insulating layer; a rigid section including:
a second portion of the flexible insulating layer,a first rigid insulating layer disposed on a first side of the second portion of the flexible insulating layer, anda second rigid insulating layer disposed on a second side of the second portion of the flexible insulating layer; a connector disposed on the rigid section, the connector configured to form a pluggable dual-sided, electrically conductive connection; an electrically conductive signal transmission line electrically coupled to the connector, the electrically conductive signal transmission line including:
a first signal trace having a root mean square surface roughness equal to or below 20 micrometers, anda filled signal via configured to pass through at least a portion of the rigid insulating layer; a transition between the flexible section and the rigid section, the transition including fillets of pliable materials at the junction of the flexible section and the rigid section; and a printed passive component coupled to the electrically conductive signal transmission line, the printed passive component formed at least in part from a geometry of a signal trace in the rigid section or the flexible section, wherein the flexible insulating layer and the rigid insulating layer have a dissipation factor equal to or below 0.004 and a dielectric constant equal to or below 3.7.