Technical knowledge：Professional Tri-Loop Antenna Testing for Worry-Free EMC Compliance!
Overview of Test Item
Radiated Field Emission Testing, also known as the three-loop antenna test, is primarily used to evaluate near-field magnetic interference generated by electrical lighting and similar electronic/electrical equipment during operation. This test measures the intensity of the magnetic field around the device to determine whether it may cause interference to surrounding equipment or violate relevant Electromagnetic Compatibility (EMC) regulations and standards.
Test Purpose
To evaluate the magnetic field intensity generated by the Equipment Under Test (EUT) during operation, ensuring compliance with international EMC standards, preventing electromagnetic interference to surrounding devices, and meeting regulatory requirements for product market approval.
Test Environment
Large Loop Antenna System (LLAS): Composed of three large loop antennas oriented perpendicularly to each other, mounted on a non-metallic support structure.
Test Principle
Electronic equipment generates a near-field magnetic field during operation, which can be decomposed into three directional components: X, Y, and Z. The three-loop antenna system captures these magnetic field components in each direction and converts them into induced currents. These currents are processed by a receiver, and the actual magnetic field strength is calculated based on conversion factors. The results are then compared against standard limits to determine whether the EUT complies with regulations.
Test Procedure
01. Place the EUT at the center of the three-loop antenna system.
02. Connect the large loop antenna system (LLAS) to the EMI receiver.
03. Measure the magnetic field strength sequentially in the X, Y, and Z directions.
04. Analyze the test data and compare it against relevant standards (e.g., CISPR, EN, etc.).
05. Issue test results and compliance determination.
Technical Advantages and Customer Value
• Accuracy and Efficiency: Utilizing shielded chamber design and high-precision measurement instruments to ensure test data accuracy and repeatability, accelerating product certification.
• End-to-End Service: Offering comprehensive technical support—from pre-testing and problem resolution to formal reporting—helping clients efficiently address EMC challenges.
• Global Recognition: Test reports comply with international regulations and standards, enabling smooth market access for products worldwide.
Radiated Field Emission Testing, also known as the three-loop antenna test, is primarily used to evaluate near-field magnetic interference generated by electrical lighting and similar electronic/electrical equipment during operation. This test measures the intensity of the magnetic field around the device to determine whether it may cause interference to surrounding equipment or violate relevant Electromagnetic Compatibility (EMC) regulations and standards.
Test Purpose
To evaluate the magnetic field intensity generated by the Equipment Under Test (EUT) during operation, ensuring compliance with international EMC standards, preventing electromagnetic interference to surrounding devices, and meeting regulatory requirements for product market approval.
Test Environment
Large Loop Antenna System (LLAS): Composed of three large loop antennas oriented perpendicularly to each other, mounted on a non-metallic support structure.
Test Principle
Electronic equipment generates a near-field magnetic field during operation, which can be decomposed into three directional components: X, Y, and Z. The three-loop antenna system captures these magnetic field components in each direction and converts them into induced currents. These currents are processed by a receiver, and the actual magnetic field strength is calculated based on conversion factors. The results are then compared against standard limits to determine whether the EUT complies with regulations.
Test Procedure
01. Place the EUT at the center of the three-loop antenna system.
02. Connect the large loop antenna system (LLAS) to the EMI receiver.
03. Measure the magnetic field strength sequentially in the X, Y, and Z directions.
04. Analyze the test data and compare it against relevant standards (e.g., CISPR, EN, etc.).
05. Issue test results and compliance determination.
Technical Advantages and Customer Value
• Accuracy and Efficiency: Utilizing shielded chamber design and high-precision measurement instruments to ensure test data accuracy and repeatability, accelerating product certification.
• End-to-End Service: Offering comprehensive technical support—from pre-testing and problem resolution to formal reporting—helping clients efficiently address EMC challenges.
• Global Recognition: Test reports comply with international regulations and standards, enabling smooth market access for products worldwide.