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Dual-mode dielectric filter and its zero point adjustment method

A dielectric filter and dielectric block technology, applied in the field of filters, can solve problems such as poor harmonic performance, and achieve the effects of increasing out-of-band suppression, improving harmonics, and reducing coupling

Active Publication Date: 2022-05-24
WUHAN FINGU ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a dual-mode dielectric filter and its zero point adjustment method, aiming at improving the problem of poor near-end harmonic performance of the existing dual-mode dielectric filter

Method used

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  • Dual-mode dielectric filter and its zero point adjustment method

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Embodiment Construction

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] like figure 2 As shown, an embodiment of the present invention provides a dual-mode dielectric filter, which includes a first resonant cavity 1 and a second resonant cavity 5 , and also includes a A plurality of dual-mode dielectric blocks 3, the dual-mode dielectric block 3 can be a microwave ceramic dual-mode dielectric block, the low-loss characteristics of the microwave ceramic dual-mode dielectric block are used to impr...

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Abstract

The present invention provides a dual-mode dielectric filter and a method for adjusting its zero point. The dual-mode dielectric filter includes a first resonant cavity and a second resonant cavity, and also includes multiple Each dual-mode dielectric block is provided with a metal layer on the surface of each dual-mode dielectric block, and a first coupling structure is provided between the dual-mode dielectric block adjacent to the first resonant cavity and the first resonant cavity, and the second resonant cavity. A second coupling structure is provided between the adjacent dual-mode dielectric blocks and the second resonant cavity, the bonding surface of each dual-mode dielectric block and the adjacent dual-mode dielectric block is a coupling surface, and the two bonding surfaces Corresponding coupling windows are etched, and the coupling windows on each coupling surface include at least one first strip-shaped window. The center line of the first strip-shaped window along the length direction is parallel to the first central axis of the coupling surface. The projection of the shaped window on the first central axis is away from the center of the coupling surface. The invention can improve harmonics.

Description

technical field [0001] The invention relates to the field of filters, in particular to a dual-mode dielectric filter and a zero point adjustment method thereof. Background technique [0002] With the continuous development of modern communication technology, the requirements for filters are getting higher and higher, and filter technology with small size, high performance, high power and low cost is particularly important for filters in wireless communication applications. [0003] like figure 1 As shown, the coupling window between two adjacent dual-mode dielectric blocks of the existing dual-mode dielectric filter is located in the center, and the near-end harmonic performance of this kind of filter is poor, which affects the overall performance of the filter, making the current Some dual-mode dielectric filters cannot meet the requirements of wireless communication systems. In addition, due to the interference problem of the communication signal, the noise suppression o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/212H01P1/20H01P1/208
CPCH01P1/212H01P1/2002H01P1/208
Inventor 许建军
Owner WUHAN FINGU ELECTRONICS TECH
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