JPH0284402U

JPH0284402U -

Info

Publication number: JPH0284402U
Application number: JP16329788U
Authority: JP
Priority date: 1988-12-15
Filing date: 1988-12-15
Publication date: 1990-06-29

Description

[Brief explanation of drawings]

第１図は本考案に係る誘電体フイルタの一実施
例を示す斜視図、第２図はその要部の断面図であ
る。第３図Ａ，Ｂはそれぞれ従来技術の一例を示
す要部の断面図である。２０……誘電体ブロツク、２２……共振子穴、
２４……結合子穴、２６……メタライズ層、３０
……開放面側エツジ部、３２……短絡面側エツジ
部。 FIG. 1 is a perspective view showing an embodiment of a dielectric filter according to the present invention, and FIG. 2 is a sectional view of the main parts thereof. FIGS. 3A and 3B are sectional views of essential parts, respectively, showing an example of the prior art. 20...Dielectric block, 22...Resonator hole,
24... Connector hole, 26... Metallized layer, 30
...Open side edge portion, 32... Short circuit side edge portion.

Claims

[Claims for Utility Model Registration] 1. A plurality of resonator holes are provided in the longitudinal direction of a rectangular parallelepiped-shaped dielectric block, and one surface where the resonator holes are open is an open surface and the other surface is a short-circuit surface. In a dielectric filter having an integral structure in which a metallized layer is formed on the outer surface excluding the open surface and the inner surface of each resonator hole, a chamfer or radius is formed on the edge of the resonator hole on the open surface side of the dielectric block. , a dielectric filter characterized in that a metallized layer is also formed in that part. 2. The dielectric filter according to claim 1, wherein a chamfer or radius is also formed on the short-circuit surface side edge portion of the resonator hole of the dielectric block. 3. The dielectric filter according to claim 1 or 2, wherein the chamfer or radius is within the range of 0.1C to 0.5C in terms of the depth of the chamfer.