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RF Can Apertures - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


matt
Post subject: RF can apertures
Unread postPosted: Tue Jan 18, 2005 8:39 am

I would like to calculate the maximum aperture size in a RF can to prevent RF energy @2.4GHz radiating through the can.
The can material is brass nickle plate fixed to a FR4 pcb.
I currently have apertures of 0.3mm X 2.5mm spaced along the bottom wall edges to thermally relieve the pcb contacts of the can.
Is this OK?
I have been told aperture dimensions should not exceed 0.6mm square before RF @2.4GHz sees the "gap" - in which case my existing can would fail to block the RF.
Can anyone please advise?


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STEVE
Post subject: APERTURE FINGS
Unread postPosted: Tue Jan 18, 2005 1:08 pm

Keep any hole smaller than wavelength / 20

Fill your boots



Posted  11/12/2012

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