ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2013
Efficient, balanced, transmission line RF circuits by back propagation of common impedance nodes.
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 10 citations in OpenAlex.
- Modular, triple-resonance, transmission line DNP MAS probe for 500 MHz/330 GHz.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2019Article
- Advances in instrumentation and methodology for solid-state NMR of biological assemblies.Journal of structural biology · 2019Review
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
We present a new, efficient strategy for designing fully balanced transmission line RF circuits for solid state NMR probes based on back propagation of common impedance nodes (BPCIN). In this approach, the impedance node phenomenon is the sole means of achieving mutual RF isolation and balance in all RF channels. BPCIN is illustrated using a custom double resonance 3.2 mm MAS probe operating at 500 MHz ((1)H) and 125 MHz ((13)C). When fully optimized, the probe is capable of producing high homogeneity (810°/90° ratios of 86% and 89% for (1)H and (13)C, respectively) and high efficiency (γB1=100 kHz for (1)H and (13)C at 70 W and 180 W of RF input, respectively; up to 360 kHz for (1)H). The probe's performance is illustrated by 2D MAS correlation spectra of microcrystals of the tripeptide N-f-MLF-OH and hydrated amyloid fibrils of the protein PI3-SH3.
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