Radio frequency tests and measurements
Guarantee compliance and performance
Understanding the importance of radio frequency measurements
Wireless communication technologies are based on the controlled use of radio spectrum. This is a regulated resource, subject to strict technical constraints. Integrating RF transceivers into electronic products therefore requires systematic verification of regulatory compliance and functional performance.The fields concerned include cellular networks (2G to 5G), Wi-Fi, Bluetooth, NFC/RFID systems and communication protocols specific to industrial connected objects (IoT). Radio performance is directly linked to interoperability, electromagnetic compatibility (EMC) and compliance with the emission limits imposed by each country.
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Why call on the Emitech Group for your radio frequency tests?
Our specialist radio frequency measurement laboratories offer cutting-edge technical expertise to support radio equipment manufacturers in their certification process.
Our strengths :
- Mastery of international and local standards: We apply regulations such as the Directive RED 2014/53/EU in Europe (CE marking), the requirements of the FCC in the United States or ISED in Canada, as well as harmonised ETSI standards to certify technical compliance.
- State-of-the-art infrastructure: Our facilities include semi-anechoic chambers (SAC), Faraday cages (FAR) and free space test platforms, ensuring accurate and repeatable measurements.
- High-performance spectrum analysers for analogue and digital signals and radio communication benches** for functional and protocol testing.
- Regulatory and technical support: Our experts assist manufacturers with regulatory developments and optimise compliance and approval strategies.
What sectors are involved in these trials?
Telecom / IoT & consumer electronics
Medical and industry
Automotive, rail and marine
Aeronautics, space and defence
Key stages in radio frequency testing
Initial assessment and preliminary analysis
Before carrying out the tests, we analyse in detail the electromagnetic characteristics of the equipment according to the standards applicable to their target market (e.g. ETSI EN 300 328 for 2.4 GHz ISM devices). This phase enables us to identify the regulatory requirements and technical specifications to be tested.
Radio frequency testing
We carry out a series of specific tests to check the radioelectric performance of equipment:
- Measurement of isotropic radiated and conducted power.
- Measurement of spurious emissions.
- Maximum power spectral density.
- Measurement of frequency stability and frequency error.
- Bandwidth and spectral occupancy.
- Adjacent channel power (ACPR).
- Tolerance to out-of-band signals (blocking).
- Channel access mechanism (CSMA, LBT - listen before talk).
- Dynamic frequency selection (DFS).
Technologies covered
- Cellular: 2G (GPRS), 3G (UMTS), 4G (LTE, LTE NB-IoT, LTE CAT-M1), 5G FR1.
- Wi-Fi: 2.4 GHz, 5 GHz, 6 GHz.
- Bluetooth: Bluetooth Low Energy, Bluetooth Classic.
- NFC / RFID: 125 kHz, 13.56 MHz, 868 MHz.
- Other RF protocols : Lora, Sigfox, Zigbee, Z-Wave, 868 MHz protocols.
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Technical assistance and certification
Once the tests have been carried out, we provide a detailed test report attesting to the product's compliance. In the event of non-compliance, we support our customers in optimising and bringing equipment into compliance.
Regulatory requirements and applicable tests
The tests applicable to radio equipment vary according to its design:
- If the radio functionality is based on a chipset, all RF tests must be carried out.
- If a previously assessed radio module is integrated, an additional assessment is required to verify electromagnetic compatibility and the impact on the final product. In the absence of proof of conformity (module test reports), all RF tests must be repeated.
The integration of a radio module into a final product requires a reassessment of transmission and reception performance to ensure the absence of interference and non-compliant emissions.
- Radio compliance with the radio requirements of RED Directive 2014/53/EU and international regulations.
- Efficient use of the radio spectrum and absence of harmful interference.
- Transmission power, spectrum occupancy and parasitic emissions.
- Reception sensitivity and robustness against external interference.
Optimise your processes with the Emitech Group
The Emitech Group makes its technical and regulatory expertise available to secure every project. We guarantee you rapid time-to-market, faultless compliance and high-level technical expertise. Our support covers the entire process: initial design optimised to comply with standards; precise planning of test campaigns; rapid obtaining of the necessary certificates from the relevant national authorities.
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Needs
Discover a selection of additional resources that explore topics related to this page including regulatory contexts, technical articles, and specific areas of expertise. These materials provide further insight to help you better understand the key challenges and available solutions.
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