Portable Signal Jammer in a Briefcase: Design and Coverage Analysis

Exploring the Design and Coverage Range of a Portable Signal Jammer

Signal jammers have become increasingly popular in various applications, prompting customers to seek portable and convenient options. One such request is for a signal jammer designed in the form of a briefcase, allowing for easy transportation and instant operation. This article delves into the design considerations and essential components of a portable signal jammer in a briefcase, as well as its coverage range.

Design Considerations:

When designing a signal jammer in the form of a briefcase, size and weight limitations are crucial factors. Typically, the dimensions of the briefcase should resemble those of a common document bag, while the weight must be kept under 10kg. These constraints pose challenges in selecting the necessary components to be installed within the limited space.

Essential Components:

The primary component of a signal jammer is the main unit responsible for signal blocking. Additionally, a heat sink and fan are crucial for ensuring rapid heat dissipation. Another essential component is the battery, which provides power to the signal jammer. If the device requires both AC and DC power supply modes, the inclusion of a switch power supply becomes necessary. Lastly, the antenna, which emits the jamming signal, can be either omnidirectional or directional, depending on the specific usage requirements.

Coverage Range:

The coverage range of a portable signal jammer in a briefcase is closely related to the transmission power of the shielding module used internally. According to our current manufacturer’s design, the individual transmission power of the shielding module typically ranges between 10-20W. Based on previous test data, when using a 20W amplifier with an omnidirectional antenna, the signal jammer’s coverage radius in a standard testing environment is usually between 40-60 meters.

If a directional antenna is used for testing, the signal jammer in a briefcase can achieve a jamming distance of approximately 50-100 meters in the main direction of the antenna’s effect.


Designing a portable signal jammer in the form of a briefcase presents challenges due to limited space. However, by carefully selecting and arranging essential components, a compact and efficient device can be created. The coverage range of such a signal jammer depends on the transmission power of the shielding module and the type of antenna used. With a comprehensive understanding of the design considerations and coverage analysis, customers can make informed decisions when choosing a portable signal jammer in a briefcase for their specific needs.