Shielded enclosures for RF radiations from PCB components stop RF energy right at the source, eliminating re-radiation and interference with other nearby components as well as reducing the number of other shielding expenditures such as filters, gaskets and RF hardening of the equipment exterior structure.
The addition of a frequency-tuned absorber membrane layer adds unprecedented performance, assimilating radiated energy without relying on repeated reflections from the interior surfaces of the shield, and without problems of harmonic resonance. Refer to sketches at left.
The latter Absorber Pad method deals with the unwanted RF energy right at the source and prevents re-radiation and reflection of the signals so that neighboring components are unaffected; also, second, third and fourth order harmonics are nullified or greatly minimized.
MODULAR FENCE AND COVER DESIGN
The versatile shield design includes a solderable fence and tight-fitting cover assembly of copper alloy 770 (C77000), a tough solder-compatible material which does not require plating nor has corrosion prone bare edges. The removable cover provides convenient access to circuitry; and is very cost-effective due to the use of universal multi-use manufacturing tooling.
CUSTOM TUNING TO THE EXACT FREQUENCY
Each enclosure shield size can be combined with frequency-specific absorber material bonded to the cover interior for exacting remediation of otherwise errant frequency emanations - a selection of six EMC absorbers effective from 50 MHz to 1 GHz along with an extra wideband version effective from 40 MHz to 5 GHz; and, ten Microwave versions effective up to 116 GHz.
ADHESIVE MOUNT COVER DESIGN OPTION - No Soldering
A very easily installed option, all of our PCB Shields are available with adhesive mounting pads. Just peel away the protective transfer tape to install - the bonding strength is initially very tenacious and continuously cures for 24 hours. Eliminates circuit changes and costly reconfigurations.
ABSORBER MEMBRANE SPECIFICATIONS
EMC TYPE: STANDARD SERIES
50MHz to 1GHz
Five frequency-specific formulations. Click here to view "Typical Absorption Rate by Frequency" charts.
(RF absorber membrane partially detached from lid for exhibit peurpose only.)
