Radiation Disturbance Test
Radiation Disturbance Test
  • Radiation Disturbance Test
  • Radiation Disturbance Test

Radiation Disturbance Test


Radiated disturbance refers to the electronic, electrical products or systems by its internal circuit work to the surrounding space emitted electromagnetic waves. This test is essentially to test the radiation signals generated by two equivalent antennas in the product. One is the equivalent antenna signal loop, and the loop is the equivalent antenna that generates radiation. The source of this radiation is the current signal flowing in the loop. Another equivalent antenna model is a monopole antenna or a symmetrical dipole antenna, these conductors, which are equivalent to monopole antennas or symmetric dipole antennas, are typically cables or other longer sized conductors in the product.

Radiation Disturbance Test

Radiation Disturbance Test

It mainly tests the radiation interference intensity of electronic and electrical equipment or system to the outside world during normal operation, including radiation interference from all components such as circuit board, chassis, cable and connection line.

The field of electromagnetic compatibility revolves around two issues: how to reduce the large amount of electromagnetic radiation generated by the product itself and enter the outside world; how to prevent the external radiation from seriously interfering with the product itself. Discuss the problem of electromagnetic radiation, usually electromagnetic interference (Electro Magnetic Interference,EMI), radiation disturbance is one of the electromagnetic interference.

Picture Name

Radiation disturbance inclusion relationship

Electromagnetic compatibility EMC Electromagnetic Immunity EMS Electrostatic Discharge Immunity (ESD)
Electrical Fast Transient Cluster Immunity (EFT)
Surge (SURGE)
Radiated Immunity (CS)
Magnetic Interference EMI Power line conduction strong disturbance (CE)
Signal and control line conducted disturbance (CE)
Radiated Strong Disturbance (RE)

Radiation harassment test content

Radiation Disturbance Test

The EUT is placed at a specified height above ground level and arranged to simulate normal operation. Place the antenna at the specified distance. Rotate the EUT in the horizontal plane and record the maximum reading. Then adjust the height of the antenna to make the direct wave and the ground reflection wave approach or reach the in-phase superposition to find the maximum disturbance value.

Measuring distance

The distance between the point of the EUT closest to the antenna and the projection of the center of the antenna on the ground. The 10-meter method is preferred, and the 3-meter method is optional.

Antenna height

The height of the antenna from the ground should be varied within a specified range in order to obtain the maximum reading that will occur when the direct and reflected waves are in phase. For measuring distances ≤ 10 m, the antenna height preferably varies from 1 m to 4 m.

Frequency range

The new standard requires measurement of 30MHz-6GHz.

Tianhai Testing Laboratory


Tianhai testing is set up and operated in accordance with the laboratory accreditation system specification ISO 17025. The testing instruments are made up of Germany's Rohde & Schwarz, Switzerland's EMTEST, YYOKOGAWA, Agilent, Tektronix and other world's top instrument manufacturers. The equipment is advanced and sophisticated, the site environment control is reliable, traceability is strong, the technical team is senior and efficient, and close cooperation with international authoritative organizations is maintained.

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Inspection Guarantee

China National Accreditation Committee for Conformity Assessment Laboratory Accreditation (CNAS), Inspection and Testing Agency Qualification Certificate (CMA), American Laboratory Accreditation Association (A2LA); Government-approved third-party testing service agencies, in strict accordance with national standards for testing, issued a report with legal effect.

Quickly get the certificate.

Quickly get the certificate.

55 engineers with more than 10 years of experience in EMC design and rectification, quickly out of the design; The introduction of German RS,SCHWARZBECK and Swiss TESEQ imported precision instrument testing, 24-hour operation, short test cycle, half an hour out of the program, 3 days to get the report.

Testing Laboratory

Testing Laboratory

Has EMC electromagnetic compatibility, safety laboratory, 966 anechoic chamber, automotive electronics laboratory, medical electronics testing laboratory, 5G RF CCC laboratory, RF laboratory, private anechoic chamber laboratory, providing a wide range of testing; The laboratory has won CMA, CNAS, A2LA and other qualifications;

Enterprise strength

Enterprise strength

15 years of industry experience, deep-rooted in the field of electromagnetic compatibility, efficient solution to product electromagnetic compatibility and other issues; National high-tech enterprise, with CMA and CNAS certificates, has been recognized by UL, TUV, Intertek, TIMCO, FCC, EMCC, NEMKO, SGS, etc. in the United States, serving the world.

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