The needed shielding range of cell phone jammer

This current has nothing to do with the current work, but the circuit will be the same as the current work and to receive the current response occurred. In other words, random RF signal to send commands to the computer, make the program change.
Technology drivers
The needed shielding range of  cell phone jammer could be got by adjusting the antenna direction of  cell phone jammer   .There are many factors to make EMC design of electronic equipment to become an important content.
First, the growing number of electronic devices has brought a lot of electromagnetic interference sources and sensor, which increases the potential for interference.
Miniaturization of devices and sensors to make the source very close. This allows shorter transmission path, increasing the chance of interference. Miniaturization of devices to increase their sensitivity to disturbance. As more and more small and portable devices, such as car phones, laptop computers and other equipment available everywhere, but not necessarily limited to the office as a controlled environment. It also brings compatibility problems. If the cell phone signal is unnecessary to be shielded, the power supply switch of the host   china cell phone jammer should be shut down.For example, many vehicles equipped with anti-lock control system including a large number of electronic circuits, including, if the car phone is not compatible with this control system, it will cause malfunction.
Internet technology reduces electromagnetic interference threshold. For example, large-scale integrated circuit chips lower supply voltage reduces the interior noise threshold, and their precise geometry of the lower level would be under the arc damage. They produce more faster synchronization sharp current pulse, this will bring from the I / O ports have broadband emission problems. In general, high-speed digital circuits than analog circuit system to produce more interference.
Traditionally, the electronic circuit mounted in a metal box, metal box that can pass through the plug off the path of electromagnetic energy to provide a shielding effect. Now, in order to reduce weight, reduce costs, more and more plastic chassis.