Flexible printed circuit with radio frequency choke
US9872379B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2016 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Mar 16, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/2009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an electronic device that employs high-speed differential signaling on one or more pairs of conductors in a flexible printed circuit, RF chokes are placed in the differential signal path and mounted directly on the flexible printed circuit which is used to interconnect a peripheral device, such as an image sensor, through a connector to another device component such as a main printed circuit board. The RF chokes are configured to suppress common-mode noise propagating in the differential pairs of conductors. In one illustrative embodiment, the RF chokes are located on the flexible printed circuit adjacent to the peripheral device to suppress common-mode noise near its source. In another illustrative embodiment, the RF chokes are mounted adjacent to the connector to suppress the common-mode noise before it has an opportunity to escape the flexible printed circuit at the major discontinuity presented by the connector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.