| 摘要 |
PROBLEM TO BE SOLVED: To solve such inconvenience that impedance decreases at a junction between a wiring conductor on a circuit board and a central conductor of a coaxial connector to enlarge reflection loss of high frequency signals and spoil operating properties of a semiconductor element. SOLUTION: The central conductor 7c of a coaxial connector 7 has a tapered part 7c' having the upside that is an inclined surface toward the tip with the location between the inside of a frame body 6 and a circuit board 2 as a starting point 9, and the length of the part projecting inside the frame body 6 from an insulator 7b is under a quarter of the wavelength of a high frequency signal. The fluctuations in impedance at the junction part between the wiring conductor 2a on the circuit board 2 and the central conductor 7c can be inhibited effectively. Moreover, resonance is not generated in the central conductor 7c projecting from the insulator 7b, so the reflection loss of high frequency signals can be extremely reduced, so as to make the operating properties of a semiconductor element 8 satisfactory. COPYRIGHT: (C)2004,JPO |
