A novel miniaturized benchtop EPR spectrometer based on sideband detection using a software-defined radio

Silver, Kai, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X, Smith, Ron, Jones, Martin O., Richards, Emma ORCID: https://orcid.org/0000-0001-6691-2377 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2025. A novel miniaturized benchtop EPR spectrometer based on sideband detection using a software-defined radio. Presented at: APMC 2024, Bali, Indonesia, 17-20 November 2024. 2024 IEEE Asia-Pacific Microwave Conference (APMC). IEEE, pp. 814-816. 10.1109/apmc60911.2024.10867565 Item availability restricted.

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Abstract

This paper presents a novel design and validation of a compact bench-top Electron Paramagnetic Resonance (EPR) spectrometer based on a software defined radio (SDR) platform. The miniaturization of traditional EPR systems is achieved by bespoke design of system components including an electromagnet, microwave resonant cavity with modulation coil and adjustable coupling, and an innovative microwave source and detection architecture using a software-defined radio. The proposed system demonstrates the capability to perform X-band EPR spectroscopy with a high signal-to-noise ratio. Preliminary test results using DPPH (2,2-Diphenyl-1-picrylhydrazyl) as a standard sample show successful detection and analysis of EPR spectra, confirming the system's efficacy.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Schools > Chemistry Schools > Engineering
Publisher:	IEEE
ISBN:	9798350363548
Date of First Compliant Deposit:	17 March 2025
Last Modified:	09 May 2025 16:30
URI:	https://orca.cardiff.ac.uk/id/eprint/176660

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