JPS59121903U

JPS59121903U - ultra high frequency filter

Info

Publication number: JPS59121903U
Application number: JP467884U
Authority: JP
Inventors: ジヤーン・クロード・クルシヨーン; ジヤーン・ルク・エテイーネ
Original assignee: トムソン−セ−エスエフ
Priority date: 1984-01-19
Filing date: 1984-01-19
Publication date: 1984-08-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の極超短波フィルタの第１の実施例の長
手方向断面図、第２図は誘電体共振器のところでカット
した第１図のフィルタの断面図、第３図は本考案の極超
短波フィルタの第２の実施例の長手方向断面図、第４図
は誘電体共振器のところでカットした第３図のフィルタ
の断面図、第５図は第３図の極超短波フィルタの別の実
施例の断面図である。１、　２．　３・・・誘電体共振器、４・・・入力、５
・・・出力、６・・・基板、７・・・ふた、８・・・金
属ねじ。FIG. 1 is a longitudinal cross-sectional view of the first embodiment of the extremely high frequency filter of the present invention, FIG. 2 is a cross-sectional view of the filter of FIG. 1 cut at the dielectric resonator, and FIG. 3 is a cross-sectional view of the filter of the present invention. 4 is a cross-sectional view of the filter of FIG. 3 cut at the dielectric resonator, and FIG. 5 is a longitudinal sectional view of a second embodiment of the ultra-high frequency filter of FIG. It is a sectional view of an example. 1, 2. 3...Dielectric resonator, 4...Input, 5
...output, 6...board, 7...lid, 8...metal screw.

Claims

[Claims for Utility Model Registration] (1) A tunable ultra-high frequency filter having a plurality of dielectric resonators, - having a longitudinal axis and a substrate and a mass surface facing the substrate; a metallic casing comprising a lid having a bottom and dimensioned to form a so-called bellow cut-off ultrashort waveguide; - disposed inside said casing and arranged along said longitudinal axis; one of the ends abuts the metallic case and the other of the ends is located an adjustable distance from the bottom of the case to provide frequency tuning of the filter. a plurality of cylindrical dielectric resonators; input coupling means for applying a unipolar microwave signal to one end of the case; and output coupling means for outputting the signal from the other end; An ultrahigh frequency filter characterized in that the electromagnetic field generated by a signal is disposed within or near a dielectric resonator in which the electromagnetic field resonates in the TMoio mode. (2) In order to obtain a bandpass filter function, the end of the dielectric resonator that comes into contact with the substrate can remain stationary within a fixing hole provided in the substrate, and the tuning frequency of the filter can be adjusted. The effective length of the dielectric resonator within the waveguide is adjusted between a minimum penetration length and a maximum penetration length at which the corresponding end of the resonator abuts the bottom of the case. Possible scope of utility model registration claims No. 1
Filters as described in Section. (3) an end of the dielectric resonator that comes into contact with the substrate to obtain a bandpass filter function is always fixed to the substrate;
A metal screw centered on the same axis as the dielectric resonator is provided at the bottom of the case, and the penetration of the metal screw in the waveguide is adjusted to the corresponding resonance in order to adjust the tuning frequency of the filter. The filter according to claim 1, which is adjustable by moving the end of the container towards or away from the mass plane formed by the bottom of the case and the metal screw. (4) An end of the dielectric resonator that contacts the substrate is fixed by the substrate, a ferrite material is provided on the side wall of the case, and the filter further applies a continuous magnetic field to the ferrite material. 2. The filter according to claim 1, further comprising: a filter in which the magnetic field applied to the ferrite material is adjustable to adjust the tuning frequency of the filter. (5) A filter according to claim 1, wherein the means for coupling the outermost resonators are formed by a coupling loop having a wire with an adjustable length. , (6) the means for coupling the outermost resonators are
The filter according to claim 1, which is a □ antenna whose position can be adjusted within the waveguide by a screw. (7) The passband of the filter is determined by the coupling between the adjacent resonators according to the air gap between them, and a metal screw with an adjustable penetration length is used to adjust the coupling between the resonators. The filter according to claim 1, which is provided between two adjacent resonators within a waveguide.