EMI Shielding Device with Bends for Optical Transceiver
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Solution Overview
Problem
Existing EMI shielding devices for optical or optoelectronic transceivers often fail to adequately secure themselves to the transceiver housing, leading to excessive electromagnetic interference leakage and potential damage during insertion or removal from cages or sockets, and may protrude excessively, causing damage.
Innovation Solution
An EMI shielding device with metal clips or plates featuring front and rear bends, tears or openings to prevent catching and scratching, and metal prongs to secure a conductive foam gasket, ensuring secure attachment and effective electromagnetic radiation blocking while preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the EMI shielding device is made to protrude further from the transceiver housing to improve shielding coverage, then the EMI shielding effectiveness is improved, but the device may damage the cage or socket during insertion or removal
Solution Approach 1:
The EMI shielding device features rounded corners instead of sharp edges. This curvature prevents the device from catching on the cage or socket during insertion and removal operations, eliminating damage while preserving the shielding effectiveness through maintained coverage area.
2Object-affected harmful factors
If the EMI shielding device is secured more tightly to the transceiver housing to prevent EMI leakage, then the EMI shielding effectiveness is improved, but the device may become difficult to install or remove
Solution Approach 1:
The EMI shielding device incorporates flexible bends that allow dynamic adjustment during installation and removal operations, making the device easier to handle while maintaining secure attachment for EMI protection during normal operation.
Solution Approach 2:
The device uses flexible metallic bends rather than rigid structures, enabling the shielding device to be easily installed and removed while maintaining adequate securing to prevent EMI leakage during operation.
3Object-affected harmful factors
If the EMI shielding device is made larger to improve shielding coverage, then the EMI shielding effectiveness is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The EMI shielding device is divided into multiple plate sections connected by flexible bends, allowing the large shielding structure to be manufactured from smaller individual pieces that are easier to produce and assemble, reducing overall manufacturing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively shields both the transceiver and the cage/socket from electromagnetic radiation, prevents damage during insertion/removal, and maintains secure alignment without excessive protrusion, enhancing the overall performance and reliability of EMI shielding.
Implementation Method 1
an electromagnetic interference (EMI) shielding device may be conveniently included in or around the housing. The EMI shielding device reduces EMI between components inside the transceiver and structures outside the transceiver
Implementation Method 2
The foam gasket is configured to seal the gap, joint or interface between the cage/socket and the optical transceiver, and optionally further block electromagnetic radiation from passing through the gap, joint or interface
Implementation Method 3
The foam gasket may also provide a mechanical buffer that absorbs some or all of the force from vibrations (e.g., through the cage or socket) or sudden movements of the optical transceiver in the cage or socket
Data Source
AI summary
Embodiments of the disclosure pertain to an electromagnetic interference shielding device comprising a base plate, first and second lateral plates connected and oriented orthogonally to the base plate, and at least one top plate connected to and oriented orthogonally to the first and second lateral plates, and a method of manufacturing such an electromagnetic interference shielding device. The top plate(s) further include (i) first and second front or side bends extending toward the base plate from a first side of the top plate(s) and (ii) first and second rear bends extending toward the base plate from a second side of the top plates. The second side of the top plate(s) is different from the first side.