| 摘要 |
PURPOSE: A matching jig of a surface acoustic wave filter is provided to prevent electromagnetic wave generated from an inductor coil by connecting an inductor parallel with a signal line. CONSTITUTION: A surface acoustic wave filter(I0) is installed on a predetermined location of a jig(I1). Signal lines(S21,S22) with constant patterns are formed on an upper portion of the jig(I1) in order to transfer signals inputted and output between the surface acoustic wave filter(I0) and outside. Grounding lines(G21,G22) connected with the surface acoustic wave filter(I0). The first and the second inductors(I1,I2) are installed at an input portion and an output portion of the surface acoustic wave filter(I0) to provide a matching function by controlling impedance. Auxiliary lines(H11,H12) are connected parallel with the signal lines(S21,S22) in order to prevent electromagnetic wave generated from the inductors(I1,I2). |
