Abstract Input-output terminal electrodes 3 and 4 are overlaid in both respective edge faces of the multilayer body 1 of a multilayer filter. Ground electrodes 5 and 5 are overlaid on both respective sides of the multilayer body 1 . Through-hole electrodes 16 and 17 for use as a pair of inductance elements are formed in the multilayer body. One ends of the inductance elements are each electrically coupled to the input-output terminal electrodes 3 and 4 , the other ends being connected to the conductive layer formed as a sealed electrode 21 . Paralleled capacitors connected to the inductance elements are formed in the multilayer body 1 . The ratio W/d of the diameter d of the through-hole electrodes 16 and 17 to width W between the ground electrodes 5 and 5 on both edge faces of the multilayer body 1 is set at not less than 1.6 and not greater than 11.4.
A multilayer filter comprising: a multilayer body formed by stacking and sintering dielectric and conductive layers; input-output terminal electrodes overlaid on two respective edge faces of the multilayer body; ground electrodes overlaid on two opposed sides of the multilayer body separated from each other by a distance W; inductance elements, each inductance element including a respective through-hole electrode of diameter d formed in a corresponding through-hole in said multilayer body; paralleled capacitors connected to said inductance elements and formed in said multilayer body; and wherein one end of each inductance element is electrically coupled to said input-output terminal electrode, the other end of each inductance element being connected to a conductive layer formed as a sealed electrode in said multilayer body; and a ratio W/d of the diameter d of each through-hole electrode to the distance W separating the ground electrodes being not less than 1.6 and not greater than 11.4.
Claim 2
Dependent Claim
151 words
A multilayer filter comprising: a multilayer body formed by stacking and sintering dielectric and conductive layers; input-output terminal electrodes overlaid on two respective edge faces of the multilayer body; ground electrodes overlaid on two opposed sides of the multilayer body separated from each other by a distance W; inductance elements, each inductance element including a respective through-hole electrode of diameter d formed in a corresponding through-hole in said multilayer body; paralleled capacitors connected to said inductance elements and formed in said multilayer body; and wherein one end of each inductance element is electrically coupled to said input-output terminal electrode, the other end of each inductance element being connected to a conductive layer formed as a sealed electrode in said multilayer body; and a ratio W/d of the diameter d of each through-hole electrode to the distance W separating the ground electrodes being not less than 1.6 and not greater than 11.4.
Claim 3
Dependent Claim
34 words
A multilayer filter as claimed in claim 1 , wherein at least one impedance-matching capacitor is provided between a respective one of said input-output terminal electrodes and a respective one of said inductance elements.
Claim 4
Dependent Claim
25 words
A multilayer filter as claimed in claim 1 , wherein the ratio W/d is set at not less than 1.8 and not greater than 8.2.
Claim 5
Dependent Claim
25 words
A multilayer filter as claimed in claim 1 , wherein the ratio W/d is set at not less than 2.2 and not greater than 6.2.