Dual-mode dielectric filter and zero point adjustment method thereof

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: 2021-06-08
WUHAN FINGU ELECTRONICS TECH
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  • Abstract
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  • 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 m

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

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Embodiment Construction

[0029] 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.

[0030] Such as figure 2 As shown, the embodiment of the present invention provides a dual-mode dielectric filter, including a first resonant cavity 1 and a second resonant cavity 5, and also includes a A plurality of dual-mode dielectric blocks 7, the dual-mode dielectric block 7 can be a microwave ceramic dual-mode dielectric block, using the low loss characteristics of the microwave ceramic dual-mode dielectric block to improve the loss characteristics of t...

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Abstract

The invention provides a dual-mode dielectric filter and a zero point adjustment method thereof. The dual-mode dielectric filter comprises a first resonant cavity and a second resonant cavity, and further comprises a plurality of dual-mode dielectric blocks located between the first resonant cavity and the second resonant cavity, and each dual-mode dielectric block is sleeved with a metal cavity, a first coupling structure is arranged between the dual-mode dielectric block adjacent to the first resonant cavity and the first resonant cavity, a second coupling structure is arranged between the dual-mode dielectric block adjacent to the second resonant cavity and the second resonant cavity, a third coupling structure is arranged between every two adjacent dual-mode dielectric blocks, and the third coupling structures are spacers, the metal cavity and the adjacent spacer jointly form a resonant cavity, the spacer is provided with a coupling window, the coupling window comprises at least one first strip-shaped hole, the center line of the first strip-shaped hole in the length direction is parallel to a first central axis of the spacer, and the projection of the first strip-shaped hole on the first central axis is far away from the center of the spacer. Harmonic waves can be improved.

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] Such as figure 1 As shown, the coupling window between two adjacent dual-mode dielectric blocks of the existing dual-mode dielectric filter is located at the center, and the near-end harmonic performance of this kind of filter is poor, which affects the overall performance of the filter, so that Some dual-mode dielectric filters cannot meet the requirements of wireless communication systems. In addition, due to the interference of communication signals, the near-end noise suppression requirement...

Claims

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Application Information

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IPC IPC(8): H01P1/212H01P1/20H01P1/208
CPCH01P1/212H01P1/2002H01P1/208
Inventor 许建军
Owner WUHAN FINGU ELECTRONICS TECH
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