People in the cell phone jammer company return to the society with high responsibility

Gasket between the liner and the poor will be lower conductive shielding effect, the other joints occur if a small slit to form a slot antenna, the radiation wavelength smaller than the gap length of about 4 times.
Gasket system: a key factor to consider is compressed, the compression gasket in between the liner and high conductive. People in this cell phone jammer company win customers by sincerity.
The magnetic bypass is another very effective shielding method, shown in Figure 4 (2) the electrical environment 2. a computer monitoring system should be considered on-site environment that may exist in the electromagnetic, electrostatic, and induction of transient voltage, lightning and power station in the area of special material conditions, but higher frequencies, high conductivity materials, magnetic shielding effectiveness may be higher than the high magnetic permeability material at high frequencies high conductivity material has a high shielding effectiveness, the reason is: the frequency increases, lower permeability, higher acoustic impedance, reflection loss increases; therefore, increase the shielding effectiveness of method is: high permeability surface coating of high conductivity material; b). Low-frequency magnetic field shielding using high permeability magnetic alloy composition to short-circuit magnetic field lines; c).People in this cell phone jammer company do everything in work with all their heart. Magnetic shielding performance and the material thickness, permeability is proportional to the size and inversely proportional to shield other; d). Magnetic field is strong, to use the multi-layer shielded to prevent magnetic saturation; e). Machining of high permeability will reduce the shielding effectiveness of materials, heat treatment after resume; f). High permeability material permeability and frequency, is generally used only for 1kHz the following; g). The processing of high permeability material with special requirements, according to the manufacturer's specifications for processing, it is best to use the factory processed products.

The original and the promotion of multi-seam cases constitute a porous shield design basis. Porous thin shielding layer: porous sub-lot, such as thin film on the ventilation holes are so that when closer spacing of the holes when the design must be carefully considered.People in the cell phone jammer company return to the society with high responsibility. Here is this case shielding effectiveness formula SE = [20lg (fc / o / σ)]-10lg n which fc / o: cut-off frequency n: Note that this hole mesh formula applies only to the hole spacing is less than the diameter of the situation, can also be used to calculate an associated braid shielding effect. Joints and contacts: welding, brazing or soldering is permanently fixed into the sheet between the common way, occupies a position is a surface must be clean and clear, so that the joints are completely filled with a conductive. Recommended nails or rivets into a fixed, because the fastener contacts between the junction of the low resistance state capacity are sustainable. Conductive pads is to reduce the slot seams or joints, holes or gaps, so that RF radiation will be distributed out. EMI gasket is a conductive medium, used to fill gaps within the shield and to provide continued low impedance contacts.People in this cell phone jammer company serve every friend owning the products. Usually in a conductor EMI gasket to provide a living connection between, on the fax so that a conductor to another conductor. EMI gasket sealing the choice can be according to the following properties: a specific frequency range of the shielding effect strong adhesion and sealing methods compatible with the electrical housing and corrosion resistance of the external environment can be. Most of the commercial temperature range of work the cost of liner has sufficient shielding to enable equipment to meet EMC standards, the key is properly within the shield into the design of the gasket.