| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filter device which is capable of reducing a power loss in a pass band and enlarging an attenuation amount in a stop band, and to provide a wireless communication apparatus comprising the filter device. <P>SOLUTION: A resonant frequency of a serial resonance circuit 31f comprising an inductor 3a and a capacitor 4a is set closer to a pass band of a filter device than a resonant frequency of a serial resonance circuit 32f comprising an inductor 3b and a capacitor 4b. A value obtained by dividing an inductance value L1 of the inductor 3a with a capacitance value C1a of the capacitor 4a is greater than a value obtained by dividing an inductance value L2 of the inductor 3b with a capacitance value C2a of the capacitor 4b. <P>COPYRIGHT: (C)2011,JPO&INPIT |
