| 摘要 |
PURPOSE:To easily provide economical electric conductivity to a complex shape waveguide by forming sequentially plural non-electrolytic Ni, Cu, Ag, and Au plating layers in specific thickness on substrate such as metal. CONSTITUTION:A complex shape waveguide substrate 1 which is too difficult for electrolytic plating to be applied is plated with plural, sequential layers of non-electrolytic Ni 2, Cu 3, Ag 4, and Au 5 in specified thickness, so that electric conductivity is given by the Ag 4 and Au 5 layers. This easily improves the electric property of plated layer in a waveguide used, for example, in millimeter wavelength range which, used to be allegedly difficult. |
