Patent ID: 7619414

Claim:
A nuclear magnetic resonance (NMR) probe comprising: an antenna coil that has both ends transmitting a radio frequency (RF) signal to a sample placed in a uniform magnetic field with a predetermined resonance frequency and receiving a free induction decay (FID) signal from the sample; a signal line that transmits the RF signal from the antenna coil and the FID signal to the antenna coil; a stage to which the antenna coil is fixed; and a probe housing that holds the stage, wherein: the antenna coil has a turn section made of a conductor formed between both ends; a first capacitor has one end connected to a first extension line extended from one end of the antenna coil and another end grounded; a second capacitor has one end connected to a second extension line extended from the other end of the antenna coil and another end grounded; and a third extension line to the signal line is connected to a junction formed on the turn section apart from the one end or the other end of the antenna coil by a predetermined distance.