| 摘要 |
PROBLEM TO BE SOLVED: To make a variable coil in a matching circuit small. SOLUTION: The variable coil 104 of the matching circuit 108 has uneven diameter, and inductance values are made variable by expansion and contraction of an expansion and contraction means expanding and contracting in the length direction, and the volume is made small in the contracted state. COPYRIGHT: (C)2004,JPO
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