| 摘要 |
PURPOSE:To reduce crosstalk and transmission leakage by forming a conductive pattern, which constructs a transmission part and a reception part on a substrate, of a superconductor ceramics thin film. CONSTITUTION:There are provided on a substrate a transmission part integrated circuit 11, an LED driving small-sized transistor 12, and an LED 15, and the like. A hatched conductive pattern 13 is formed with a superconductor ceramics single layer thin film or a multiple layer thin film. Electric resistances of a conductive pattern material and an earthing material can be made zero, so that even with a normal conductor for a shielding plate and a casing shielding effect can be improved to reduce crosstalk and transmission leakage upon transmission reception operation. |
