JPH03117910U

JPH03117910U -

Info

Publication number: JPH03117910U
Application number: JP2639790U
Authority: JP
Priority date: 1990-03-15
Filing date: 1990-03-15
Publication date: 1991-12-05

Description

[Brief explanation of drawings]

第１図Ａは本考案の一実施例における誘電体フ
イルタの外観斜視図、第１図Ｂはその断面図、第
２図Ａは接続端子の斜視図、第２図Ｂはその断面
図、第３図は誘電体基板の結合用電極を示す図、
第４図は等価回路を示す図、第５図は特性図、第
６図は他の実施例を示す図、第７図は従来例を示
す図である。２０，２０′……誘電体同軸共振器、２０ａ，
２０ａ′……孔、２２，２２′……凹部、２３，
２３′……接続用電極、２４……誘電体基板、２
５……結合用電極、２６……接続端子、２６ｃ…
…鍔部。 1A is an external perspective view of a dielectric filter according to an embodiment of the present invention, FIG. 1B is a sectional view thereof, FIG. 2A is a perspective view of a connecting terminal, FIG. 2B is a sectional view thereof, and FIG. Figure 3 shows the coupling electrode of the dielectric substrate;
FIG. 4 is a diagram showing an equivalent circuit, FIG. 5 is a characteristic diagram, FIG. 6 is a diagram showing another embodiment, and FIG. 7 is a diagram showing a conventional example. 20, 20'...dielectric coaxial resonator, 20a,
20a'...hole, 22, 22'...recess, 23,
23'... Connection electrode, 24... Dielectric substrate, 2
5... Coupling electrode, 26... Connection terminal, 26c...
...Tsubabe.

Claims

[Claims for Utility Model Registration] (1) A plurality of conductive coaxial resonators each having a hole and an inner conductor formed by applying a conductive film to the inner surface of the hole, and the dielectric coaxial resonator. a connection electrode connected to each inner conductor of the dielectric substrate;
A connecting electrode is formed on the dielectric substrate and is connected to each of the connecting electrodes and forms a coupling capacitance between the inner conductors of at least adjacent dielectric coaxial resonators, and a part of the conductive wire is made of a dielectric material. a connecting terminal formed by depositing the inner conductor on the inner conductor and having one end inserted into the hole forming the inner conductor; and a connecting terminal formed on the connecting terminal and engaged with the dielectric substrate when the connecting terminal is inserted into the hole. and a flange portion for pressing the dielectric substrate toward the connection electrode. (2) A plurality of dielectric coaxial resonators each having a hole and an inner conductor formed by applying a conductive film to the inner surface of the hole, and each of the dielectric coaxial resonators at the first input stage and the final output stage. A recess formed on the open surface side and having one side opened; a connecting electrode formed on the top surface of the recess and connected to the inner conductor of each of the dielectric coaxial resonators; and a connecting electrode housed in both the recesses. a dielectric substrate, a coupling electrode formed on the dielectric substrate and connected to each of the connection electrodes and forming a coupling capacitance between the inner conductors of at least adjacent dielectric coaxial resonators; and one of the conductive wires. a connecting terminal formed by coating a dielectric material on the inner conductor and having one end inserted into the hole forming the inner conductor; 1. A dielectric filter comprising a flange that engages with a body substrate and presses the dielectric substrate toward the connection electrode. (3) The dielectric coaxial resonator interposed between the input first-stage resonator and the output final-stage resonator is equal to the distance from the short-circuit plane of the input first-stage resonator and the output final-stage resonator to the top surface of the recess. 3. The dielectric filter according to claim 2, having a resonance length.