The structure feature of this cell phone jammer

The structure feature of this cell phone jammer
At present, the use of the technology performance and more in 60 ~ 90 dB. In addition, some power relatively strong enterprise adoption of improved magnetron sputtering technology, although asked to solve some environmental agent made of composite materials, including metal foil surface waves play a role in shielding its advantage is simple, high bond strength and difficult part of the loss, leading Science and Technology Review 2009, 27 (24) 89 review articles (Reviews) title, but the technology is relatively low production efficiency, to some extent, increased production costs for blending technology development, mainly metal wire and fiber yarn according to different proportion of partnership, to change the density of harmony ply yarn types, to achieve electromagnetic shielding effect.
Installation requirements are as follows: - the filter should be a solid metal casing and equipment securely fixed together, otherwise it will increase the contact resistance, reduced filter performance; - to avoid the filter input and output lead wire coupling exists, so as not to reduce the filter control signal for EMI suppression, the most effective solution is to filter installed in the chassis of the device into the line. 4.3 pairs of filter selection requires that the principal use requirements are as follows: - on the filter insertion loss test; - more power filter circuit output impedance and input impedance will affect the stability of the filter; - as much as possible choice can inhibit self-resonant multi-stage filter; - High input impedance filters with low source impedance matching; - must be able to withstand occasional high-voltage transients, such as the lightning impulse.
cell phone jammer contains some other parts.  "Mobile phone jammers (power adjustable type) directional antenna + [+] horse wins smart phone screen network management system" such a complete portfolio, combined with reasonable installation point, you can do for the theater or venue various functional areas to achieve more precise shielding, for example, the normal signal podium area, auditorium full screen live signal, or the audience but also sub-regional or sub-floor for selective shielding.cell phone jammer enhances safety of oil field and oil depot.  Our government for such events given enough attention by the national leadership in the form of law promulgated and implemented. Especially in some highly confidential information required an important place, such as government agencies office, the military operational command structure, banking / securities and other financial centers, examination room, etc., often occur intentionally or unintentionally, some phones will be important by the political, commercial , military, civil and other confidential information leaked out, and hostile forces inside and outside the relevant information for the steal, I long for important sectors, the characters of satellite positioning and mobile phone conversations monitoring, such cases should be the political, economic, military life major problems can not be ignored, harm my political, military, economic and even endanger our national security. Increasing number of such incidents, the need of our attention and attention.cell phone jammer is also called signal shielding device.