根据课本中的描述方式对下文进行“英译汉”。 The implementation and characteristics of a compact lumped-element three-order low-pass filter are presented in this paper. The filter with 120MHz cut off frequency,as well as more than 20db of the attenuation above 360MHz frequency band is successfully manufactured in a LL-CC substrate with 40m layer thickness. The overall size of the filter is 2.0mm*1.2mm*0. 9mm. A good coincidence between the measured results and the full-wave electromagnetic designed response is observed.