| 摘要 |
PROBLEM TO BE SOLVED: To prevent an insulator from being cracked, and obtain a high-frequency connector with a good airtight encapsulation. SOLUTION: This is the high-frequency connector 4 comprising a cylindrical outer conductor 1, an insulator 2 that is airtightly joined in contact with the inner face of this outer conductor 1 and that has a through hole 2a in nearly parallel with a shaft direction of the outer conductor 1, and a rod-like central conductor 3 that, inserted through the through hole 2a, is airtightly joined with the both ends protruding from the insulator 2. This is characterized by thatα2<α3<=α1 andα3-α2<=1 ppm/ deg.C on condition that average linear thermal expansion factors of the outer conductor 1, the insulator 2 and the central conductor 3 at 25-450 deg.C are assumed asα1,α2 andα3 ppm/ deg.C, respectively.
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