Near-Field Measurement System Based on a Software Defined Radio

Perotoni, Marcelo B.; Silva, Leandro Augusto da; Silva, Walter; Santos, Kenedy Marconi Geraldo dos

doi:10.2528/pierl21111106

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…It is used by hobbyist and academia and supports both wireless communications research and operational radio systems. The latest applications of GNU Radio environment include near-field measurements [33], wireless communication system development [34,35], spectrum sensing and availability [36,37], and machine learning [37,38].…”

Section: Receiver Sectionmentioning

confidence: 99%

SDR-Enabled Multichannel Real-Time Measurement System for In Situ EMF Exposure Evaluation

et al. 2022

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The spatial and temporal variability of the signals emitted by modern communication devices produced a paradigm shift in approaching the human exposure to electromagnetic fields (EMF). This inherent variability requires in situ, agile EMF measurement solutions capable of performing real-time isotropic measurements. The aim of this paper is to describe a new real-time, highly flexible multichannel EMF measurement system that consists of a sensor connected to state-of-the-art software-defined radio (SDR) equipment. In this paper an electric field sensor is proposed, but we also provide information on the extension of the probe to electric and magnetic fields. In the receiver section, the proposed solution is compared in terms of performances (sensitivity and accuracy), costs, and requirements, with standard solutions based on spectrum analyzers or a digital oscilloscope. Finally, the proposed solution was tested considering the signals emitted in various operating scenarios by a mobile device operating in the LTE-A and IEEE 802.11ax mobile communication standards. The results confirm the versatility and efficiency of the proposed solution for in situ EMF measurements of signals emitted by the new generation communication devices.

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Section: Receiver Sectionmentioning

confidence: 99%

SDR-Enabled Multichannel Real-Time Measurement System for In Situ EMF Exposure Evaluation

et al. 2022

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“…Given the tiny size of a typical BLS, it can be characterized by its effectiveness in reducing EMI in the (very) near field [20]. It is interesting to determine the effectiveness of a BLS in reducing near-field problems, such as undesired magnetic decoupling between two adjacent circuits [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Advanced Characterization of a Hybrid Shielding Solution for Reducing Electromagnetic Interferences at Board Level

Victoria,

Suarez,

Martinez

et al. 2024

Electronics

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The development of new advanced functionalities, miniaturization, and the aim of obtaining optimized performance in electronic devices significantly impacts their electromagnetic compatibility (EMC). As electronic components become more densely packed on a printed circuit board (PCB), unintended coupling between components can cause electromagnetic interference (EMI). These requirements result in design restrictions that make using a board level shield (BLS) essential in reducing intra-system EMI in PCB designs. This contribution focuses on studying and characterizing a BLS solution based on combining a noise suppression sheet (NSS) with an aluminum layer to reduce intra-system EMI coupling. This hybrid solution has the advantage of providing a shielding option that does not require any electronic redesign. It does not need a footprint or a ground connection as it can be affixed over the EMI source. The solution is expected to provide higher attenuation levels than using only an NSS by combining the absorbing properties of the magnetic material and the loss mechanism of the metal. In order to verify the effectiveness of the hybrid BLS proposed solution, the magnetic near-field emissions of an EMI source are analyzed in this study. The experimental measurements and simulated results demonstrate a significant increase (51.6 dB at 1 GHz) in the shielding effectiveness (SE) provided by the proposed solution compared to a conventional NSS.

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Near-Field Measurement System Based on a Software Defined Radio

Cited by 2 publications

References 15 publications

SDR-Enabled Multichannel Real-Time Measurement System for In Situ EMF Exposure Evaluation

SDR-Enabled Multichannel Real-Time Measurement System for In Situ EMF Exposure Evaluation

Advanced Characterization of a Hybrid Shielding Solution for Reducing Electromagnetic Interferences at Board Level

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