EN
RF shielding boxes are essential equipment in the R&D and production testing of wireless products. They effectively isolate external electromagnetic interference and provide a stable and reliable test environment for wireless communication modules, PCB antennas, and other RF devices. Among the key performance indicators, shielding effectiveness is one of the most important parameters used to evaluate the shielding performance of an enclosure.
Traditional shielding effectiveness testing, however, relies heavily on manual operation. Test personnel often need to repeatedly adjust antenna positions, change test directions, and perform measurements at multiple angles. This not only results in relatively low testing efficiency, but also makes the process more susceptible to human error.
To address this industry challenge, LK-TEK independently developed an automatic shielding effectiveness test system for RF shielding boxes. By integrating mechanical automation, intelligent software control, and precision positioning technologies, the system automates the entire shielding effectiveness testing process, significantly improving testing efficiency and consistency.
In conventional shielding effectiveness testing, operators typically need to manually perform a series of tasks, including adjusting the shielding box position, installing and removing PCB antennas, rotating antenna orientations, switching test points, and collecting data from a network analyzer.
The overall process involves numerous repetitive operations. When multi-angle and multi-position measurements are required, the testing cycle becomes significantly longer. In addition, manual adjustment can introduce positioning deviations, while differences in operator technique may lead to inconsistent test results, affecting data accuracy and product evaluation.
To address these issues, LK-TEK's R&D team developed an automated testing solution that combines mechanical motion mechanisms, a control system, and dedicated test software to automate the entire shielding effectiveness testing process.
The automatic test system mainly consists of a test frame, RF shielding box, PCB antenna assembly, rotary platform, robotic mechanism, motor drive module, pneumatic cylinder control mechanism, control board, and software system.
By integrating mechanical structures with intelligent control technologies, the system can accurately position the test object and automatically switch between different test configurations.
The system is equipped with an automatic rotary test platform driven by a motor located beneath the platform.
The host computer software controls the motor to rotate the platform according to preset angles, enabling shielding effectiveness measurements in multiple directions. The entire movement sequence is controlled automatically by the motor drive module, eliminating the need for manual intervention and improving both testing efficiency and repeatability.
An automated PCB antenna positioning mechanism is integrated into the system to adjust antenna position through a mechanical transmission structure.
Compared with conventional manual placement, this mechanism provides higher positioning accuracy and better consistency between test points, helping reduce human error. In addition, the antenna movement mechanism and the shielding box rotation mechanism operate independently, supporting flexible combinations of multi-directional testing.
The complete system is managed through intelligent host computer software.
Operators only need to configure the required test parameters through the software interface. The system can then automatically execute shielding box rotation, PCB antenna movement, test position switching, and test result recording, enabling highly automated and unattended test operation.
To ensure testing accuracy, the system incorporates several mechanical design optimizations.
Positioning slots, locating pins, and other precision positioning structures are used to ensure consistent installation of the shielding box. At the same time, the supporting frame and fixing structures enhance the mechanical stability of the overall system and help prevent positional shifts during testing.
The system also adopts an independent motion control design. The PCB antenna assembly and shielding box rotation mechanism are driven separately: the shielding box controls directional adjustment, while the PCB antenna mechanism handles position changes. Their movements are coordinated by the central control system.
This design reduces interference between different motion mechanisms and improves overall testing reliability.
Compared with traditional manual testing methods, the system eliminates the need to repeatedly open the shielding box and manually reposition the sample. Multiple test surfaces can be switched automatically through software control, effectively reducing manual operation time, improving testing efficiency, and lowering operator workload.
The system is suitable for a wide range of wireless testing applications, including:
With this automated test platform, manufacturers can perform wireless product performance verification more efficiently and accurately, helping shorten R&D cycles and improve product quality.
Tel：173 9470 0835
E-mail：support@lk-tek.com
Add：No. 246 Wencheng East Road, Siyang County Economic Development Zone, Suqian City, Jiangsu Province
