Waveguide filter

A filter and waveguide technology, applied in waveguide devices, electrical components, multi-terminal pair networks, etc., can solve design constraints and other problems, and achieve the effect of improving characteristics

Active Publication Date: 2022-05-03
KMW INC
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  • Abstract
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  • Claims
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Problems solved by technology

[0009] In particular, when a cross-coupling is used to realize a notch on the left and right sides of the passband, the non-symmetrical left side is strongly coupled and the right side is weakly coupled. In this case, two cross-coupling structures will inevitably be used, which These two types of cross-coupling impose many restrictions on filter design, especially in the ceramic filter structure where it is difficult to insert additional structures to achieve cross-coupling inside the filter.
[0010] Also, in order to satisfy the characteristics by implementing 2 notches on the left or right side of the passband, it is necessary to implement 2 cross-coupling through an odd number of resonators, which is subject to many design constraints

Method used

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Embodiment Construction

[0054] The advantages, features and methods for achieving them of the present invention can be clearly confirmed with reference to the accompanying drawings and the various embodiments described in the following description. However, the present invention is not limited by the following multiple embodiments, and can be realized in various forms. Multiple embodiments make the disclosure of the present invention complete, and provide the thinking of the present invention to those of ordinary skill in the technical field of the present invention The scope is only defined according to the protection scope of the present invention. In the specification, the same reference numeral refers to the same structural element.

[0055] Hereinafter, an embodiment of the waveguide filter of the present invention will be described in detail with reference to the drawings.

[0056] Figure 1a and Figure 1b A perspective view showing one face and the other face of a waveguide filter according...

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Abstract

The present invention relates to a waveguide filter, in particular, comprising: a filter housing having a plurality of resonant blocks; a plurality of resonators provided through resonator columns formed in each of resonance blocks, the resonance blocks being formed in the filter housing; and a resonator channel provided in the filter housing so as to cross-couple at least two of the plurality of resonator blocks, thereby providing an advantage of extremely simple implementation design of coupling for forming a notch.

Description

technical field [0001] The present invention relates to a waveguide filter (WAVEGUIDE FILTER) for an antenna, and more specifically, to a waveguide filter utilizing cross-coupling by including a resonator. Background technique [0002] Recently, as the variety of wireless communication services has increased, the frequency environment has gradually become more complicated. Because the frequency used for wireless communication is limited, it is necessary to make wireless communication channels adjacent to each other as much as possible to effectively use frequency resources. [0003] But signal interference occurs in an environment where various wireless communication services are provided, so in order to minimize signal interference between adjacent frequency resources, the antenna includes a band filter for a specific frequency band. [0004] Generally, in order to improve the attenuation characteristics of a band filter, it is necessary to adopt a transmission zero (herei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208H01P1/207
CPCH01P1/208H01P1/207H01P1/2053H03H2007/013H01P5/02H03H7/01
Inventor 申铅浩李权远
Owner KMW INC
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