What are the disadvantages of using an indoor distributed mobile phone signal shielding system?
Customer feedback shows that using the room division method to install a mobile phone signal shielding system is a more traditional method. This method requires the use of one or more high-power hosts and RF cables to transmit the signal to each area that needs to be shielded. Each area is equipped with an indoor antenna to transmit the shielded mobile phone signal.
However, this method is rare and outdated in new construction projects nowadays. There are more and more types of mobile phone bands and standards, and the frequency range is getting wider and wider. When multiple bands need to be combined into one or two RF cables to transmit to each node, several problems will arise. These problems include:
1.Power attenuation:
The transmission path of the signal is prone to power loss due to feeder errors, adapter errors and other problems, resulting in reduced signal shielding effect.
2.Limitation on the number of transmitting antenna terminals:
Usually, at most one or two hosts are required for every ten antenna terminals. This limitation hinders the scalability and coverage of the system. The most popular and easy-to-use cell phone jammer.
3.Antenna requirements:
The combination of multiple bands has high requirements for antennas. It is very challenging to show good standing wave transmission performance in a wide frequency range of several gigahertz.
In this room-based mobile phone signal shielding system solution, although the host is a high-power device, the effect achieved at each antenna end is similar to that of the traditional low-power signal shielding device used in the cellular layout.
In addition, this solution also has disadvantages such as complex and difficult installation process, which requires drilling holes in the wall and a large amount of wiring. In addition, when a single host is connected to multiple antennas, the power allocated to each antenna may not be equal. Generally, the power allocation of antennas closer to each other is larger, and the power allocation of antennas farther away is smaller.
