Overview
IEC TR 63352:2022 - "Transmitting and receiving equipment for radiocommunication - Radio spectrum measurement method - 300‑GHz spectrum measurement equipment" - is a Technical Report from IEC TC 103 that addresses spectrum measurement methods for the mmWave band from 140 GHz to 300 GHz. The report describes a high‑dynamic‑range spectrum measurement system and proposes an mmWave pre‑selector to reduce unwanted responses and spurious signals that compromise accurate measurement at these frequencies. It also provides background context, system configurations and over‑the‑air (OTA) spurious measurement examples for antennas under test (AUTs).
Key Topics
- Frequency range covered: 140 GHz to 300 GHz - practical guidance for the 300‑GHz band.
- High‑dynamic‑range measurement systems: architecture and considerations to detect low‑level signals in the presence of high‑power inputs.
- mmWave pre‑selector technology: approaches to suppress image and spurious responses originating in mixers, multipliers and front‑end hardware.
- Spectrum analyser configurations: optical and electrical local oscillator generation options, pre‑selection methods and block diagrams.
- Performance metrics discussed: displayed average noise level (DANL), third‑order intercept (TOI), unwanted response characterization, calibration and signal‑source requirements.
- OTA measurement examples: spurious emissions measurement of AUTs, propagation loss and integrated system evaluation in realistic test setups.
- Background and regulatory context: references to IEEE Std 802.15.3d, experimental licensing above 95 GHz and WRC‑19 agenda considerations.
Practical Applications
- Test and calibration of mmWave radio components and subsystems used in research, industrial sensing, LIDAR, FOD radar and high‑speed wireless links.
- Measurement of spurious emissions and spectral purity for antenna manufacturers and test labs performing OTA evaluations of AUTs.
- Development of measurement equipment and spectrum analysers targeting the 300‑GHz band, including pre‑selector designs and low‑noise front ends.
- Support for spectrum managers, regulators and standards developers assessing coexistence and allocation issues in the high‑frequency mmWave bands.
Who Should Use It
- RF and mmWave test engineers, design and verification teams.
- Laboratory managers and certification bodies establishing measurement procedures for 140–300 GHz.
- Equipment manufacturers designing high‑frequency spectrum analysers, mixers and pre‑selectors.
- Regulators and spectrum planners working on mmWave allocation, measurement and compliance.
Related Standards
- IEEE Std 802.15.3d (300‑GHz PHY guidance) - referenced for use cases and frequency plan.
- ITU/WRC and national experimental licensing frameworks for frequencies above 95 GHz - context for spectrum policy and testing.
IEC TR 63352:2022 is a practical resource for implementing accurate, low‑spurious spectrum measurements in the emerging 300‑GHz ecosystem. Keywords: IEC TR 63352:2022, 300‑GHz spectrum measurement, mmWave pre‑selector, high‑dynamic‑range spectrum analyser, OTA spurious measurement.