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Resonator and filter

A resonator and filter technology, which is applied in the communication field, can solve the problems of reducing the interference signal suppression ability of the filter and the performance degradation of the filter, and achieves the effects of miniaturization, improvement of suppression ability, and small size

Inactive Publication Date: 2017-10-24
DONGGUAN COOLPAD SOFTWARE TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When combined into a filter, since the middle part of the strongest magnetic field is directly exposed, there is also a strong magnetic field coupling between non-adjacent resonators, resulting in unnecessary cross-coupling of the filter and reducing the filter pair The ability to suppress interference signals outside the passband, resulting in a decrease in filter performance

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In addition, the following descriptions of the various embodiments refer to the attached drawings to illustrate specific embodiments in which the present invention can be implemented. The directional terms mentioned in the present invention, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., only is to refer to the direction of the attached drawings. Therefore, the direction terms used are for better and mor...

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Abstract

The invention discloses a resonator, which comprises a first branch line, a second branch line and a connecting portion used for connecting the first branch line and the second branch line, and is characterized in that the first branch line and the second branch line are spaced by a gap, and the first branch line and the second branch line extend in parallel by taking the connecting portion as an initial position, form an un-closed surrounding structure and enable the connecting portion to be located inside the surrounding structure. According to the resonator, the strongest part of a magnetic field can be avoided from being directly exposed, coupling between two non-adjacent resonators can be avoided, and the performance of a filter is improved. The invention further discloses a filter provided with the resonator.

Description

technical field [0001] The invention relates to the communication field, in particular to a resonator and a filter with the resonator. Background technique [0002] The filter has a frequency selection function, that is, it allows the signal of the required frequency to pass through, and suppresses the signal of the unwanted frequency to pass through. It is an extremely important component in the field of microwave communication and is widely used in mobile communication, satellite communication, radar and other microwaves. communication field. Filters are usually composed of resonators, and the cascaded combination of microstrip line resonators is an important form of realizing the function of a bandpass filter. Among them, there is a commonly used resonator with a relatively simple structure, please refer to figure 1 , this type of resonator is formed by a single linear microstrip line, that is, the middle part 20' is used as the bending part, so that the microstrip line...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P7/08
CPCH01P1/203H01P7/08
Inventor 万陈丽
Owner DONGGUAN COOLPAD SOFTWARE TECH
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