NOISE FILTER

PROBLEM TO BE SOLVED: To provide a noise filter capable of expanding a frequency band with low impedance. SOLUTION: An LC filter is constituted using a coil 20, and capacitors 40, 41 with different frequency characteristics. The capacitors 40, 41 are mounted between a wiring patter 32 for grounding and signal wiring patterns 33, 34 formed separately from each other in a wiring plate 30. The signal wiring patterns 33, 34 are extended in the respective capacitors 40, 41 at a state of being separated from each other according to the respective capacitors 40, 41 from the coil 20 in the wiring patterns for signal. A wiring plate 50 is extended to the signal wiring patterns 33, 34 in a state of being separated from each other corresponding to the respective capacitors 40, 41 from the side to be connected to a signal output terminal 23 of the coil 20. COPYRIGHT: (C)2010,JPO&INPIT