The introduction of NC box of phone jammer intelligent system

Adjust 5 degree back and shut off power supply switch for once and then the green light of the detector of phone jammer intelligent system should flash.
Is the ultimate mobile phone antenna element is of course very important. Sometimes this happens: When using the cable testing, the whole RF performance is good, but when doing the field testing of its poor performance, one of the problems that may arise is the antenna. Whole circuit is designed correctly between the antenna and matching circuit LPF type and parameters, and use network analyzer and the standard test antenna testing and evaluation. Antenna should be designed with the whole circuit design, structural design, EMC design integration considerations. Structural strength to meet the prerequisite conditions, the preferred material as the higher conductivity within the antenna conductor. Built-in antenna design I suggested that the domestic manufacturers should not be used because of the design, manufacture and measurement are more difficult and technical indicators is not high. Filler material within the antenna and the external medium should be a smaller loss of plastic packaging materials. In other cases under the same conditions, the use of thicker and longer antenna gain antenna will help to improve indicator. (Of course, also take into account the impact of its appearance ID). The introduction of NC box of phone jammer intelligent system will be presented.
The indicators and mobile phone talk time and standby time are closely related, it is the majority of users are most concerned about technical indicators. Choose low-power ASIC solutions (in DCI.8V can work under, can enter the RTC under the deep sleep state). Choose effective software. Choose high-efficiency PA (PAE> 50%), high efficiency, high gain antenna. PA designed the matching circuit and antenna matching circuit. Choose high-efficiency receiver and ringer. Choose high-efficiency power management module. Rational design of LED layout, quantity, time and lighting, lighting time can be selected l0 seconds. Through a large number of actual measurements we found that: different models of GSM mobile phones in the call state operating current less (about 2lomA/at level5 GSM); but in standby mode the DC average current big difference (and oscilloscope can be used In the whole circuit in series with a low-value precision resistors to measure the waveform, then the duty cycle obtained by calculating the average power consumption) so very different indicators of standby time. In this regard, the current performance of the best products are produced by Philippe PH-989 (about 2.8mA). It is the connection mode figure of phone jammer intelligent system.