Built-in Antenna Signal Jammer vs. External Antenna Jammer: A Comparative Analysis


Signal Jammers are devices used to block or disrupt wireless communication signals. They are commonly used in various settings such as prisons, schools, and theaters to prevent unauthorized use of mobile phones or other wireless devices. In this article, we will compare two types of Signal Jammers: those with built-in antennas and those with external antennas.

Structural Comparison:

When comparing the external structure of these two types of Signal Jammers, it is evident that the built-in antenna jammer integrates the transmitting antenna, power supply, and heat dissipation fins into a sleek and plug-and-play plastic casing. This design eliminates the need for complex antenna connections and power plug-ins. On the other hand, the external antenna jammer features a metal painted casing that combines the shielding module with the casing, effectively utilizing the casing for optimal heat dissipation.

Performance Factors:

  1. Aesthetics and Convenience: The built-in antenna Signal Jammer offers a more aesthetically pleasing and user-friendly design with its integrated components and easy-to-use plastic casing. It eliminates the hassle of dealing with separate antennas and power connections. In contrast, the external antenna jammer may appear bulkier due to its metal casing and requires additional antenna and power connections.
  2. Heat Dissipation: Both types of jammers prioritize heat dissipation to ensure optimal performance and longevity. The built-in antenna jammer utilizes the integrated heat dissipation fins within its plastic casing, while the external antenna jammer takes advantage of the metal casing to achieve efficient heat dissipation. Both designs aim to prevent overheating and maintain stable operation.
  3. Power Supply: One notable difference between the two jammers is the power supply configuration. The external antenna jammer features a separate power supply from the main unit, which alleviates any additional burden on the main unit and allows for long-term stable operation. In contrast, the built-in antenna jammer integrates the power supply within the plastic casing, eliminating the need for separate power connections.


In conclusion, the choice between a built-in antenna Signal Jammer and an external antenna jammer depends on various factors such as aesthetics, convenience, and power supply configuration. The built-in antenna jammer offers a sleek and user-friendly design, eliminating the need for complex antenna connections and power plug-ins.

On the other hand, the external antenna jammer provides efficient heat dissipation and a separate power supply, ensuring long-term stable operation. Ultimately, the decision should be based on the specific requirements and preferences of the user.