| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-frequency detection device of which the capacitance of a capacitor formed in between a power transmission conductor and an inner conductor of a coaxial tube is not limited by a thickness of a substrate. <P>SOLUTION: In the high-frequency detection device 1 for detecting a high-frequency voltage signal according to the high-frequency voltage which is generated on the inner conductor 8 of the coaxial tube, a ring-shaped conductor 23 is prepared on a printed substrate 2 and the capacitors are connected thereto in series. The ring-shaped conductor 23 is fixed on the printed substrate 2 so that an axial direction of the inner conductor 8 penetrated with a cylindrical part 23a and the printed substrate 2 almost become orthogonal. The high-frequency voltage signal is output based on a voltage generated in the ring-shaped conductor 23 penetrated with the inner conductor 8. A height of the cylindrical part 23a of the ring-shaped conductor 23 (length of printed substrate 2 in the thickness direction) can be arranged larger than the thickness of the printed substrate 2. The capacitance of the capacitor formed in between the power transmission conductor and the inner conductor 8 is not limited by the thickness of the printed substrate 2 accordingly. <P>COPYRIGHT: (C)2012,JPO&INPIT |
