| 摘要 |
PURPOSE:To realize the delay detecting circuit which necessitates no adjustment by a small circuit constitution without using a coaxial cable by connecting two surface acoustic wave sand pass filters through a two-distributing circuit having directional property, and sending out two outputs of the surface acoustic wave band pass filters to a multiplying circuit of the next stage. CONSTITUTION:Two surface acoustic wave band pass filters 45, 46 for delaying an inputted data signal by one-bit portion are connected by placing a two- distributing circuit 34 having directional property on the pre-stage, so that two outputs of the surface acoustic wave band pass filters 45, 46 are sent out to a multiplying circuit of the next stage. In such a way, the constitution of the circuit becomes small without using a coaxial cable for a delaying circuit 35, and also, trouble for the adjustment can be saved. |
