Patent ID: 7898362

Claim:
A filter of an unbalanced output type having a capacitor connected between an input stage and ground, wherein said capacitor is divided into two capacitors, said two capacitors being connected between corresponding balanced input terminals and ground, said filter is formed in a base body comprising a dielectric member and a magnetic member that are joined to each other, and wherein at least an unbalanced output terminal is formed on a surface of said base body, said balanced input terminals comprise a first balanced input terminal and a second balanced input terminal formed on said surface of said base body, and at least a ground terminal is formed on said surface of said base body; a plurality of capacitor electrodes and a plurality of coil electrodes are formed in said base body; a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor are formed from said plurality of capacitor electrodes, said two capacitors comprising said third and fourth capacitors, said first capacitor and said second capacitor being connected in series with each other between said unbalanced output terminal and said first balanced input terminal, said third capacitor being connected between said first balanced input terminal and said ground terminal, and said fourth capacitor being connected between said second balanced input terminal and said ground terminal; and a first coil and a second coil are formed from said plurality of coil electrodes, said first coil being connected between said first balanced input terminal and said second balanced input terminal, and said second coil being connected in parallel with said second capacitor.