EMI cut-off Waveguide Ventilation Panel

 EMI cut-off Waveguide Ventilation Panel

In the context of increasingly dense modern electronic devices and complex electromagnetic environments, electronic devices require good ventilation and heat dissipation, as well as strict electromagnetic compatibility (EMC) requirements. our products can play a certain role in solving such problems: Honeycomb ventilation waveguide panel.

Honeycomb  shielding ventilation panel consists of two parts: honeycomb core material and frame. The honeycomb core material is formed by bonding metal foil through perforation or laser welding processes. The frame is usually made of extruded metal frame, which is used to fix the honeycomb core and facilitate installation. It can be embedded with conductive foam, electromagnetic sealing gasket, seal the assembly gap of the frame, or add dust-proof filter screen, flange installation edge, etc., customized according to needs.

The electromagnetic shielding and ventilation performance of honeycomb ventilation panels are mainly determined by the following parameters:

Honeycomb core cellsize 

Standard cellsize include :  1.6mm, 2.4mm, 3.2mm, 6.4mm, and other specifications. 

The smaller the aperture, the higher the shielding effectiveness, but the greater the ventilation resistance.

Honeycomb thickness 

Standard thicknesses include 6.35mm, 12.7mm, 25.4mm, 30mm, 40mm, 45mm, etc. 

The thicker the thickness, the higher the shielding effectiveness.

Shielding performance

The shielding effectiveness of honeycomb ventilation panel varies depending on the material, structure, and frequency.

Surface treatment is an important means to enhance shielding effectiveness and environmental resistance. After conductive oxidation, honeycomb core materials and frames can be treated with tin plating, nickel plating, zinc plating, chrome plating, etc. Tin plating or nickel plating can significantly improve shielding effectiveness and corrosion resistance. 

Aluminum honeycomb core 

Steel honeycomb core 

Application

Honeycomb electromagnetic shielding ventilation panels are widely used in various scenarios that require a balance between ventilation, heat dissipation, and electromagnetic protection.

Shielded room: Ventilation and air exchange are essential facilities for shielded rooms, and honeycomb waveguide windows are standard configurations.

Rail transit and trains: High quality aluminum alloy honeycomb ventilation panels combine electromagnetic shielding and lightweight advantages.

Communication cabin and EMC rack: balancing equipment heat dissipation requirements and electromagnetic compatibility certification requirements.