Patent ID: 7196522
Filing Date: 2007-03-27
Classification: G01R

Abstract:
1. Power circuit for a coil, in particular an NMR coil or a sample coil, comprising two power or transmission line segments each connected to one of the two ends of this coil, whereby said line segments form with said coil a first oscillating circuit that exhibits a determined resonance frequency, wherein two line segments each comprise at least two conductors of which one is connected to said coil, and between them exhibit identical structures and identical lengths of connected conductors, whereby this common length is essentially a multiple of half of the resonance wavelength of said first oscillating circuit, wherein said conductors that are connected to said coil at one of their ends are connected to one another at their other end by an adjustable symmetrical tuning circuit or a component that completes said first oscillating circuit, and wherein said first oscillating circuit with symmetrical structure is powered by a primary power circuit by means of a transfer of energy by magnetic coupling, capacitive coupling or magneto-capacitive coupling of said primary power circuit with at least one of two conductors that are connected to said coil and to said tuning circuit or said component.