Multilayered flexible printed circuit with both radio frequency (RF) and DC transmission lines electrically isolated from each other and an optical transceiver using same
US10230470B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2017 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Jul 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10189
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In accordance with an embodiment, a multi-layered flexible printed circuit (FPC) is disclosed that includes two or more insulating layers to route conductive traces carrying radio frequency (RF) signals, e.g., data signals, and conductive traces carrying direct current (DC) signals, e.g., power signals and low-frequency control signals, while sufficiently isolating the RF signals from electrical interference by the DC transmission lines. This advantageously eliminates having two or more separate FPCs to electrically couple each optical subassembly, e.g., receiver optical subassemblies (ROSAs) and transmitter optical subassemblies (TOSAs), to associated circuitry in a transceiver housing, which saves space and reduces manufacturing complexity, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.