Study on EMC and OTA Anechoic Chamber Compatibility
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Keywords

EMC
Anechoic chamber compatibility
Ripple calibration
OTA test

DOI

10.26689/jera.v9i4.11450

Submitted : 2025-07-09
Accepted : 2025-07-24
Published : 2025-08-08

Abstract

EMC anechoic chamber is used for radiation emission and radiation immunity test, and the wireless performance of products needs to be tested in OTA anechoic chamber. With more and more electronic and electrical equipment with wireless communication function, the rapid construction of a compatible OTA test system in the existing EMC anechoic chamber can save the cost and space of enterprises and third-party laboratories that already have EMC anechoic chamber. In this paper, the OTA test system is built in the existing EMC anechoic room, the ripple calibration test is carried out according to the OTA standard, the TRP and TIS tests are carried out on two test samples with different wireless communication standards, and the test samples are taken to the OTA anechoic room for a comparison test. The comparison between the ripple calibration data and the OTA test data showed that the EMC anechoic chamber could perform OTA test without affecting the original test ability. The data results provide a basis for the implementation of EMC anechoic chamber compatibility upgrade OTA test, and provide reference for further optimization of the compatible test system, reduction of test differences, and the design of anechoic chamber integrating two test functions.

References

Takahashi, Masanori, Suzuki, et al., 2006, High Speed System for Measuring Electromagnetic Field Distribution (Electromagnetic Compatibility (EMC)). ICE Transactions on Communications, 2006.

Cellular Telecommunications and Internet Association (CTIA), 2022, Test Plan for Wireless Device Over-the-Air Performance, Method of Measurement for Radiated RF Power and Receiver Performance (Version 4.0), 2022.

Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 1-4: Radio Disturbance and Immunity Measuring Apparatus - Antennas and Test Sites for Radiated Disturbance Measurements: CISPR 16-1-4, 2023.

Wang F, Zhang C, Huang M, 2016, Smart Combination of Antenna Anechoic Chamber and EMC Anechoic Chamber. Safety and Electromagnetic Compatibility, 2016(5): 83–85.

Wu C, Yu F, Luo Y, 2011, Construction of Dual-Purpose Anechoic Chamber. Safety and Electromagnetic Compatibility, 2011(2): 51–55.

Analysis of Wireless Terminal Anechoic Chamber Ripple Measurement in CTIA OTA Accreditation. Journal of Microwaves, 2018(5): 73–78.

Shen PH, Qi YH, Yu W, et al., 2021, UE Reporting Uncertainty Analysis in Radiated Two-stage MIMO Measurements. IEEE Transactions on Antennas and Propagation, 69(12): 8808–8815.

Chen QW, Chen X, 2021, WLAN MIMO Device Performance Evaluation Using Improved RTS Measurement. IEEE Transactions on Instrumentation and Measurement, 70: 1–8.

Kristian K, Chen XM, Jan C, et al., 2013, On OTA Test in the Presence of Doppler Spreads in a Reverberation Chamber. IEEE Antennas and Wireless Propagation Letters, 12: 886–889.

Gao Y, Abouda K, Huot-Marchand A, 2012, Bandgap Circuitry with High Immunity to Harsh EMC Disturbances, 2012 Asia-Pacific Symposium on Electromagnetic Compatibility.

Chen XM, Tang JZ, Li T, et al., 2018, Reverberation Chambers for Over-the-Air Tests: An Overview of Two Decades of Research. IEEE Access, 6: 49129–49143.

Tian ZH, Huang Y, Xu Q, 2017, Efficient Measurement Techniques on OTA Test in Reverberation Chamber, 2017 IEEE International Symposium on Antennas and Propagation & USNC/ URSI National Radio Science Meeting. San Diego: IEEE, 2017: 1855–1856.

Jensen MA, Arnold MT, Arnold MD, et al., 2023, Reconfigurable Surfaces in Reverberation Chambers for Over-the-Air Mobile Device Testing, 2023 International Workshop on Antenna Technology (iWAT). Aalborg: IEEE, 2023: 1–4.

Kyosti P, Nuutinen JP, Kolu J, et al., 2009, Channel Modelling for Radiated Testing of MIMO Capable Terminals, ICT Mobile Summit 2009. Santander: IEEE, 2009: 1–8.

Kyosti P, Jamsa T, Nuutinen JP, 2012, Channel Modelling for Multiprobe Over-the-Air MIMO Testing. International Journal of Antennas and Propagation, 2012: 1–11.