FREQUENCY SELECTING DEVICE USING AN ELECTRIC WAVE ATTENUATION PROPERTY CAPABLE OF SELECTING A FREQUENCY WITH HIGH RESOLUTION

摘要

PURPOSE: A frequency selecting device using an electric wave attenuation property is provided to select an electric signal according to a frequency property.;CONSTITUTION: An IDT(Inter-digital Transducer)(310) receives a signal and transmits a surface acoustic wave. An elastic substrate(320) is formed according to a transmission property of the surface acoustic wave. A plurality of coating lines(330) are arranged on the side of the substrate in a transmission direction of the surface acoustic wave. A plurality of input units are connected to a conductive line(340) and the coating line. A frequency selection switch(350) is connected to the input unit.;COPYRIGHT KIPO 2012