JPS6170401U

JPS6170401U -

Info

Publication number: JPS6170401U
Application number: JP15369884U
Authority: JP
Priority date: 1984-10-12
Filing date: 1984-10-12
Publication date: 1986-05-14

Description

[Brief explanation of the drawing]

第１図は本考案に係る共用器の正面部分断面図
、第２図は同じく上面板を除いた状態での平面図
、第３図は本考案に係る共用器の別の実施例にお
ける正面部分断面図、第４図は同じく上面板を取
り除いた状態での平面図、第５図は本考案に係る
共用器の電気的等価回路図、第６図は従来の共用
器の正面部分断面図、第７図は同じく上面板を除
いた状態での平面図である。１……金属容器、２……受波用誘電体フイルタ
、３……送波用誘電体フイルタ、２１〜２４，３
１〜３４……誘電体共振器、４，６，１６……誘
電体基板、４１〜４５，６１〜６６，１６１〜１
７０……電極。 Fig. 1 is a front partial sectional view of a common device according to the present invention, Fig. 2 is a plan view with the top plate removed, and Fig. 3 is a front view of another embodiment of a common device according to the present invention. 4 is a plan view with the top plate removed, FIG. 5 is an electrical equivalent circuit diagram of the duplexer according to the present invention, and FIG. 6 is a partial front sectional view of the conventional duplexer. FIG. 7 is a plan view with the top plate removed. DESCRIPTION OF SYMBOLS 1... Metal container, 2... Dielectric filter for wave reception, 3... Dielectric filter for wave transmission, 21 to 24, 3
1-34...Dielectric resonator, 4,6,16...Dielectric substrate, 41-45, 61-66, 161-1
70...electrode.

Claims

[Scope of Claim for Utility Model Registration] (1) In a duplexer that has a dielectric filter for receiving waves and a dielectric filter for transmitting waves, and one end of both of these dielectric filters is connected to an antenna common terminal,
The duplexer is characterized in that the one end of either the wave transmitting dielectric filter or the wave receiving dielectric filter is connected to the antenna common terminal via a capacitor. (2) The duplexer according to claim 1, wherein the capacitor has a larger capacity than a capacitor provided at the other end of the dielectric filter. (3) The dielectric filter is composed of a plurality of dielectric resonators sequentially coupled by a coupling capacitor, and among the plurality of dielectric resonators, the dielectric resonator located at the one end side is , the duplexer according to claim 1 or 2, wherein the resonant frequency is higher than that of the dielectric resonator located at the other end. (4) The dielectric filter is configured by coupling a plurality of dielectric resonators with a coupling capacitor formed on a dielectric substrate, and one end of the dielectric filter is connected to the dielectric substrate in common with the antenna. The duplexer according to claim 1, wherein the capacitor is connected to a terminal. (5) Utility model registration claim 4, characterized in that the wave receiving dielectric filter is constructed by coupling a plurality of dielectric resonators with a coupling capacitor formed on a dielectric substrate. Shared device described in . (6) The dielectric substrate forming the coupling capacitor of the wave receiving dielectric filter and the dielectric substrate forming the coupling capacitor of the wave transmitting dielectric filter are the same dielectric substrate. A common device according to claim 5 of the utility model registration claim.