Product category:
Gaskets, Seals and Screens
News Release from: Precision Micro | Subject: Quiet corner cans
Edited by the Electronicstalk Editorial
Team on 21 November 2005
Quiet corners boost screening
performance
A finger joint arrangement on the corner seam improves both the shielding integrity and mechanical stability of board-level screening cans.
The effectiveness of board level EMI/RFI shielding depends on many factors: the design of the shielding can, material choice, thickness, venting, method of attachment and not least, what is referred to as the "maximum linear dimension" - the longest contiguous hole or slot This maximum opening size is a function of the frequency spectrum of the device being shielded and of the attenuation desired
This article was originally published on Electronicstalk on 23 Jun 2005 at 8.00am (UK)
Related stories
Shielding service provides full coverage
Precision Micro has launched a complete "service package" for those requiring EMI/RFI shielding solutions, covering all aspects from design to compliance.
Profiled and folded shielding cans offer many benefits to the user, including bespoke design, exceptional coplanarity, low tooling costs etc; but one of the drawbacks to date has been the corner seam which has the potential to act as an emitter antenna if it is not folded and mounted with great care.
This corner seam can be soldered for complete the integrity necessary in very high frequency applications but in the majority of instances the need is simply to reduce the "maximum linear dimension".
Precision Micro, the Birmingham based precision metal components manufacturer has successfully addressed this potential problem with the introduction of a finger joint arrangement on the corner seam.
The two adjacent can walls simply interlock along the corner seam.
Named by Precision Micro as a "quiet corner" arrangement, the design has been tested and shown to improve noise attenuation with the added benefit of improving the mechanical stability of the shielding can.
• Precision Micro: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
