| 摘要 |
PURPOSE:To reduce a coil inductance without narrowing the area of a uniform rotating magnetic field by connecting two, at least, linear parts, which are parallel with a coil bobbin shaft, in parallel. CONSTITUTION:With respect to a saddle type coil, the number of linear parts 4a, 4b- parallel with the coil bobbin shaft is important for spatial uniformity of the rotating magnetic field, and a wider area of the uniform rotating magnetic field is attained according as the number of turns of the coil is larger. When linear parts close to each other out of linear parts 4a, 4b- are connected in parallel properly, the total number of turns of the saddle-type coil is reduced, and its inductance L is reduced. Thus, the inductance of the coil is reduced without narrowing the area of the uniform rotation magnetic field generated by an RF coil to attain the RF coil for higher frequency. |
