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A Novel Stereo Miniature Dual-mode Broadband Filter

A filter and three-dimensional technology, applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problem that the size of microstrip filters and LC filters is not conducive to miniaturization and integration, and it is impossible to obtain better filtering characteristics and processing technology at the same time The requirements are more stringent and other issues, to achieve the effect of light weight, low insertion loss in the passband, and wide bandwidth

Inactive Publication Date: 2017-01-04
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The surface acoustic wave filter has better filtering characteristics, but its production cost is relatively high and the requirements for processing technology are relatively strict, and the yield rate is low
The large volume of microstrip filters and LC filters is not conducive to miniaturization and integration
The prior art has the defect of being unable to obtain better filtering characteristics, miniaturization, high yield and low cost at the same time

Method used

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  • A Novel Stereo Miniature Dual-mode Broadband Filter
  • A Novel Stereo Miniature Dual-mode Broadband Filter
  • A Novel Stereo Miniature Dual-mode Broadband Filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The input interface coupling stripline C3, the first stripline C4 of the dual-mode resonant cavity, the second stripline C5 of the dual-mode resonant cavity and the third stripline C5 of the dual-mode resonant cavity of the novel three-dimensional miniature dual-mode broadband filter of the present invention The dimensions of the line C6 are 1.8mm×0.25mm, 1.9mm×0.3mm, 3.2mm×0.3mm and 1.95mm×0.3mm, respectively.

[0027] The overall size of the new three-dimensional miniature dual-mode broadband filter is only 4.8mm×4.2mm×1.5mm, and its performance can be obtained from image 3 The simulation results show that, by image 3 It can be seen that the passband bandwidth is 4.61GHz to 6.16GHz, the minimum insertion loss in the passband is 0.237dB, and the return loss of the input port is better than 18.5dB; Figure 4 It can be seen that the group delay consistency in the passband is good.

[0028] It can be seen from the above that the present invention adopts a dual-mode st...

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Abstract

The invention relates to a novel three-dimensional miniature dual-mode broadband filter, including input / output ports, internal interfaces, interface-coupled striplines and a dual-mode resonant stage realized by using a stripline structure. Ceramic technology is realized. The invention has the advantages of wide frequency coverage, small insertion loss, light weight, small volume, high reliability, good electrical performance, good temperature stability, good batch consistency of electrical performance, low cost, and mass production, and is suitable for radio frequency , microwave and millimeter wave frequency band communication, satellite communication and other communication systems that have strict requirements on volume, electrical performance, temperature stability and reliability.

Description

technical field [0001] The invention relates to a radio frequency microwave filter, in particular to a novel three-dimensional miniature double-mode broadband filter. Background technique [0002] In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and national defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave / radio frequency field. The performance, size and reliability of microwave filters Both sex and cost have put forward higher requirements. In some cutting-edge defense equipment, the current frequency bands are quite crowded, so cutting-edge equipment such as satellite communications are developing towards the millimeter-wave band, so microwave millimeter-wave band filters have become key electronic components in the receiving and transmitting branches of this band, described The main indicators of the performance of this component...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 戴永胜朱丹邓良陈相治童娟娟
Owner NANJING UNIV OF SCI & TECH
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