Electromagnetic radiation shielding on a pci express card
AssigneeFinisar Corporation
InventorsTat Ming Teo, Chris Kiyoshi Togami
Life of this patent
Estimating the term…
Abstract
An example embodiment includes an electromagnetic radiation (EMR) shield. The EMR shield is configured to reduce EMR from escaping a host device. The EMR shield includes a structure, two or more module-grounding tabs, and multiple fingers. The structure is configured to substantially surround two or more adjacent transceiver modules positioned in an opening defined in a bezel. The two or more module-grounding tabs extend from the structure. Each of the module-grounding tabs is configured to contact one of the transceiver modules. The fingers extend from the structure and are configured to contact the bezel at multiple contact areas substantially surrounding the opening.
Claims12
A peripheral component interconnect express (PCIe) card comprising:
- a printed circuit board (PCB);
- a bezel defining an opening that is mechanically coupled to a first end of the PCB, the bezel including contact areas on a surface of the bezel facing the PCB around the opening;
- two or more independent transceiver modules electrically coupled to the PCB, the transceiver modules extending from the first end of the PCB in a first direction such that a first portion of each of the transceiver modules is positioned in the opening, wherein each of the transceiver modules include a second portion that extends in a second direction from the bezel towards the PCB, and the transceiver modules are positioned adjacent to one another such that an entire portion of at least one side surface of the second portion of each of the transceiver modules is immediately adjacent to an entire portion of a side surface of another of the transceiver modules;
- and
- an electromagnetic radiation (EMR) shield that substantially surrounds the transceiver modules, the EMR shield comprising:
- an upper wall positioned in contact with top surfaces of the transceiver modules,
- a lower wall positioned in contact with bottom surfaces of the transceiver modules,
- a first side wall positioned in contact with one of the side surfaces of one of the transceiver modules,
- a second side wall positioned in contact with one of the side surfaces of another of the transceiver modules,
- a front wall perpendicular to the lower wall, the side walls, and the upper wall and defining four module openings through which one of the transceiver modules extends, the four module openings being separated by vertical slats positioned between first portions of adjacent transceiver modules, wherein:
- the upper wall, the lower wall, the side walls each include a first portion and a second portion that are connected by fingers that include ridges that extend in directions away from the opening, the fingers being positioned in contact the contact areas of the bezel at multiple contact areas surrounding the opening, and the fingers connecting the first portion of the lower wall and the second portion of the lower wall are positioned between the first end of the PCB and the bezel.
Dependencies are inferred from the claim text.