Near-Field Precision Measurement System of High-Density Integrated Module
| Autor: | Jiawei Liu, Changshun Fu, Zhangqiang Ma, Zhaowen Yan, Jianwei Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Electromagnetic field
Spectrum analyzer Noise measurement Computer science Amplifier Acoustics System of measurement 020208 electrical & electronic engineering Electromagnetic compatibility Near and far field 02 engineering and technology Noise (electronics) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Instrumentation |
| Zdroj: | IEEE Transactions on Instrumentation and Measurement. 70:1-9 |
| ISSN: | 1557-9662 0018-9456 |
| Popis: | An automatic near-field precision measurement system was proposed in this article. The work was mainly focused on the hardware structure design of the near-field precision measurement system and the software development of the upper computer. At the same time, the electromagnetic field probes used in the system were selected and introduced. The near-field precision measurement system was composed of an upper computer control part, motion controller, power amplifier module, three-axes mechanical arms, spectrum analyzer, and near-field probes. Three-axes mechanical arm, multi-degree-of-freedom fixture, and electromagnetic field probe cooperate with each other for near-field measurement. The electromagnetic radiation emission of high-density integrated module and liquid crystal display (LCD)-printed circuit board (PCB) of laptop computer were measured. According to the measured data, the visual field distribution map was generated, and the measured results were analyzed. Compared with manual measurement method and commercial electromagnetic compatibility (EMC) scanners, the near-field precision measurement system has more accurate measurement results and can accurately locate the noise source. |
| Databáze: | OpenAIRE |
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