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Impedance matching in NMR probe with an adjustable segmented transmission line

Title: Impedance matching in NMR probe with an adjustable segmented transmission line.
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2 downloads
Name(s): Qian, Chunqi, inventor
Type of Resource: text
Genre: Utility
Text
Date Created: 2009-10-26
Date Issued: 2013-09-03
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Impedance matching between the RF probe and the spectrometer is a standard requirement for NMR probes. Both lumped element and branched transmission line methods are in wide use. Here we propose to use a segmented transmission line structure. It relies upon reflections between transmission lines of different impedances that are serially connected to match the impedance of a coil or resonator to the characteristic impedance of the NMR spectrometer. In an embodiment, two quarter-wave length dielectric slugs are placed within a coaxial transmission line. Adjustment of the positions of the slugs allows the variable tuning and matching needed for NMR probes, eliminating the need for variable capacitors and inductors.
Identifier: FSU_uspto_8525518 (IID), 8525518 (patent number), 2774534 (inventor key), 12/605761 (app id), 6c9256d97d167832cbab694dc904bd27 (assignee id)
Cited by US patents: 1
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_uspto_8525518
Use and Reproduction: Copyright not evaluated
Owner Institution: FSU

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Impedance matching in NMR probe with an adjustable segmented transmission line. (2013). Impedance matching in NMR probe with an adjustable segmented transmission line. Retrieved from http://purl.flvc.org/fsu/fd/FSU_uspto_8525518