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Miniaturization band-pass filter

A band-pass filter and cavity technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve problems such as shrinking, and achieve the effect of increasing filtering effect, increasing length, and reducing volume

Active Publication Date: 2013-05-22
成都赛纳赛德科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the height of the cavity, although this method of directly using metal pillars can make the volume of the cavity filter smaller, this reduction is limited. We need to explore new methods to bring the cavity filter The miniaturization of the pass filter is done better

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , 2 , 3 shows a miniaturized bandpass filter, including a cavity 1, a base 3 connected to the cavity 1, the cavity 1 is divided into at least two cavities by a partition 2 in the axial direction, and an inner conductor 6 and The coaxial input and output structure composed of the outer conductor 7; the metal rod 4 and the metal plate 5 are arranged inside the cavity; the inner conductor 6 is connected with the metal rod 4 or the metal plate 5, the upper end of the metal rod 4 is connected with the metal plate 5, and the metal rod 4 The lower end is connected with the base 3, the cavity 1 is composed of a top cover and side walls, the coaxial input and output structure is arranged on the left and right side walls of the cavity 1, and the metal rod 4 is a curved conductor.

[0027] The metal rod 4 is bent in a plane parallel or perpendicular to the axis of the cavity 1 .

[0028] The cavity 1 is a rectangle, the base is a rectangle, the partition 2 is a ...

Embodiment 2

[0034] Such as Figure 4 As shown, a miniaturized band-pass filter, the structure of which is the same as that in the first implementation example, except that the metal plate 5 is a rectangular flat plate parallel to the base 3 .

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Abstract

The invention discloses a miniaturization band-pass filter which comprises cavity body, a base, metal rods, metal plates, an input structure and an output structure, wherein the input structure and the output structure are coaxial and respectively formed by an inner conductor and an outer conductor. The inner conductor is connected with the metal rods or the metal plates, the upper ends of the metal rods are connected with the metal plates, and the lower ends of the metal rods are connected with the base. The cavity body is composed of a top cover and side walls, and is separated into at least two empty cavities by separating plates on an axial direction of the cavity body. The miniaturization band-pass filter is characterized in that the metal rods are curved conductors, is composed of cuboids which are parallel to one of three sides of the cavity body 1 and bend only in a plane which is parallel to or perpendicular to an axis of the cavity body. Two ends of the metal plates are placed on the axial direction of the cavity, and bend towards an inner base in a plane which is parallel to the axis of the cavity body and perpendicular to the base. The miniaturization band-pass filter has the advantages of being easy to process and capable of greatly reducing the size of the cavity body band-pass filter. The miniaturization band-pass filter can be widely applied to electronic systems of all microwave bands, and especially applied to military and civil fields such as radars, missile guidance and communication.

Description

technical field [0001] The invention relates to a small filter, in particular, a miniaturized band-pass filter loaded with both capacitance and inductance. Background technique [0002] Ordinary cavity bandpass filters have resonant cavities that are all cavities, resulting in an excessively large overall volume of the filter, especially in the case of low frequencies. In order to solve this problem, most people use the method of capacitive loading of metal pillars, such as ordinary comb filters, including a cavity, at least 2 comb teeth located in the cavity and an input and output structure. This filter has the characteristics of compact size . However, due to the limitation of the height of the cavity, although this method of directly using metal pillars can make the volume of the cavity filter smaller, this reduction is limited. We need to explore new methods to bring the cavity filter The miniaturization of the pass filter is done better. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/207H01P1/208
Inventor 王清源谭宜成江月
Owner 成都赛纳赛德科技有限公司