JPH03113502U

JPH03113502U -

Info

Publication number: JPH03113502U
Application number: JP2304290U
Authority: JP
Priority date: 1990-03-07
Filing date: 1990-03-07
Publication date: 1991-11-20

Description

[Brief explanation of drawings]

第１図は、この考案の一実施例によるストリツ
プラインフイルタ２０に含まれる誘電体基板２１
ａ〜２１ｄを互いに他のものに対して分離した状
態で示す斜視図である。第２図は、第１図に示し
たストリツプラインフイルタ２０によつて得られ
る減衰特性を示す図である。第３図および第４図
は、第１図の実施例における結合用電極２５の変
形例を示す誘電体基板２１ｃの平面図である。第
５図は、この考案の他の実施例によるストリツプ
ラインフイルタ３０に含まれる誘電体基板３１ａ
〜３１ｄを互いに他のものに対して分離して示す
斜視図である。第６図は、第５図に示したストリ
ツプラインフイルタ３０によつて得られる減衰特
性を示す図である。第７図は、第５図の実施例に
おける結合用電極３９の変形例を示す誘電体基板
３１ｃの平面図である。第８図は、この考案にと
つて興味ある先願に開示されたストリツプライン
フイルタに含まれる誘電体基板１１ａ〜１１ｎを
互いに他のものに対して分離した状態で示す斜視
図である。第９図は、第８図に示した誘電体基板
を用いて構成したストリツプラインフイルタ１０
の外観を示す斜視図である。第１０図は、第９図
と同じストリツプラインフイルタ１０を示すが、
第９図とは異なる角度から示した斜視図である。
第１１図は、第９図の線Ｘ−Ｘに沿う断面図
である。図において、２０，３０はストリツプラインフ
イルタ、２１ａ〜２１ｄ，３１ａ〜３１ｄは誘電
体基板、２２，３２は積層構造物、２４，２６，
３４，３５はストリツプライン共振器、２５，３
９は結合用電極、２７，３６はシヨート面、２８
，３８はオープン面、２９，３８はアース電極で
ある。 FIG. 1 shows a dielectric substrate 21 included in a stripline filter 20 according to an embodiment of the invention.
It is a perspective view which shows a-21d in a state separated from each other. FIG. 2 is a diagram showing attenuation characteristics obtained by the stripline filter 20 shown in FIG. 1. 3 and 4 are plan views of a dielectric substrate 21c showing a modification of the coupling electrode 25 in the embodiment shown in FIG. FIG. 5 shows a dielectric substrate 31a included in a stripline filter 30 according to another embodiment of the invention.
-31d is a perspective view showing the parts separated from each other. FIG. 6 is a diagram showing attenuation characteristics obtained by the stripline filter 30 shown in FIG. FIG. 7 is a plan view of a dielectric substrate 31c showing a modification of the coupling electrode 39 in the embodiment shown in FIG. FIG. 8 is a perspective view showing dielectric substrates 11a to 11n included in the stripline filter disclosed in the earlier application which is of interest to the present invention, separated from each other. FIG. 9 shows a stripline filter 10 constructed using the dielectric substrate shown in FIG.
FIG. FIG. 10 shows the same stripline filter 10 as FIG. 9, but
FIG. 9 is a perspective view taken from a different angle from FIG. 9;
FIG. 11 is a sectional view taken along line XX in FIG. 9. In the figure, 20, 30 are stripline filters, 21a to 21d, 31a to 31d are dielectric substrates, 22, 32 are laminated structures, 24, 26,
34, 35 are stripline resonators, 25, 3
9 is a coupling electrode, 27, 36 is a short surface, 28
, 38 are open surfaces, and 29 and 38 are ground electrodes.

Claims

[Claims for Utility Model Registration] (1) A laminated structure formed by stacking a plurality of dielectric substrates, with a specific dielectric material such that at least two stripline resonators face each other in the thickness direction of the dielectric substrates. Each stripline resonator is formed between adjacent substrates, and each stripline resonator extends to reach one end surface of the laminated structure, such that the one end surface is a short surface, and the other stripline resonator is formed between adjacent substrates. A ground electrode is formed on at least the short surface and two adjacent side surfaces of the laminated structure so that the end surface is an open surface and electrically connected to each stripline resonator. A stripline filter in which a coupling electrode electrically connected to a ground electrode is formed between adjacent dielectric substrates located between stripline resonators. (2) The stripline filter according to claim 1, wherein the coupling electrode is formed at a position offset to the shot surface side. (3) The stripline filter according to claim 1, wherein the coupling electrode is formed at a position offset toward the open surface side.