| 摘要 |
PURPOSE:To continuously alter a resonance frequency by providing a variable capacitor which varies an electrostatic capacity by altering a region to be superposed with a T-shaped conductor plate in a high frequency magnetic field generation/detector used in a unclear magnetic resonance apparatus. CONSTITUTION:Two T-shaped conductor plates T1, T2 are superposed through a dielectric material 4 to form an H-shaped conductor plate 1H. The material 4 is secured to the outside of a vertical band 1a at the upper side of the plate 1H, or secured to the inside of the band 1a at the lower side of the plate 1H to be a synthetic resin polymer such as porcelain or polytetrafluoroethylene. A variable capacitor 5 is formed of two T-shaped conductor plated T1, T2 and the material 4, and its electrostatic capacity can be altered by moving one of the plate T2 with respect to the other T1. Thus, the resonance frequency of a stereoscopic circuit which forms an equivalent LC series resonator together with the capacitor 5 can be continuously adjusted.
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