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Smart shield

Smart shield

     Introduction of Intelligent Shield Module


     The intelligent shield is based on a software radio platform, and is composed of multiple radio frequency circuits, SOC subsystems, FLASH, DDR3 and other core chips, and provides commonly used external interfaces such as SD cards, Gigabit Ethernet ports, serial ports, etc.


     Product advantages


     This module is different from the traditional analog shield. It uses a software radio platform to detect and identify the 2G / 3G / 4G wireless network standard, and obtain the base station frequency, broadcast channel / pilot channel and other information. The baseband coded modulation signal is generated in real time based on the detection information and transmitted to the downlink frequency band of the base station through the radio frequency link. It can achieve effective shielding of mobile phone and network connection with small interference transmitting power, especially can effectively solve the problem of signal shielding of LTE mobile phones.


Product Details



  参数名称
  指标  说明
  Working frequency  865~2655MHz Cover 2G, 3G, 4G, special frequency bands can be customized
  Number of RF channels  4 receive / 8 launch
  Single Pass Bandwidth  40MHz
  Detection antenna maximum non-damaged input power  +2dBm  Exceeding this power may cause chip damage
  External Interface  GPIO/ Serial / Gigabit Ethernet
  Operating Voltage  DC 12V/2A
  Operating temperature  -30℃~65℃
  Module size  200mm x 184mm



      This module supports the whole network standard (2G / 3G / 4G), including GSM900 / GSM1800 / CDMA / WCDMA / TD-SCDMA / TDD-LTE / FDD-LTE. It also supports WLAN signal shielding in the 2.4G band. Supports the frequency bands of all domestic operators in the wireless frequency band. If you need to use it outside China, there are a few things to note:

      1. Mobile communication standards: 2G / 3G / 4G are in compliance with 3GPP standards worldwide. Therefore, this module can support the global 2G / 3G / 4G wireless standards, and there is no problem of incompatible network standards in some countries / regions;

      2. The radio spectrum planning may be different in different countries and regions. This module supports mobile communication bands in China by default. For countries / regions outside China, if the mobile communication band exceeds the frequency band in China, customers need to provide relevant frequency bands Request to our company, our company can support customers' frequency band requirements through software upgrades.


For more information or to order products, please contact Xiamen Hejiaxing Sales Office.

Mobile: +86-13600975566

WeChat：13600975566

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Mail：zf@hjx.cn