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Filter based on printed ridge gap waveguide technology

A filter and waveguide technology, applied in the field of filters, can solve the problems of low out-of-band suppression and high insertion loss, and achieve the effect of strong out-of-band suppression and good frequency selectivity

Inactive Publication Date: 2021-04-27
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] Purpose of the invention: The present invention aims to solve the above-mentioned deficiencies of the prior art, provide a filter based on printed ridge waveguide technology, and solve the problems of low out-of-band rejection and high insertion loss

Method used

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  • Filter based on printed ridge gap waveguide technology
  • Filter based on printed ridge gap waveguide technology
  • Filter based on printed ridge gap waveguide technology

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Embodiment Construction

[0019]The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0020]byFigure 1 - Figure 4It can be seen that the filter of the present invention, from top to bottom, in order, the upper dielectric ground metal plate 7, the upper dielectric layer 6, the lower dielectric layer 13, and the lower dielectric ground metal plate 14.

[0021]The lower surface of the upper dielectric layer 6 is printed on the upper layer filter, and the lower layer filter is printed on the lower dielectric layer 13. The upper filter includes the upper belt filter 4 and the lower strip filter 5, two filter levels, all of which are three-sized cuts. A band pass filter that makes a transmission zero point in the upper sideband and the lower strip. Both filters are composed of three microstrip resonance cavities formed by microstrip lines, and the metal via EBG array units on microstrip lines formed by microstrip coupling. The upper belt filter 4 ...

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Abstract

The invention discloses a filter based on a printed ridge gap waveguide technology. The filter sequentially comprises an upper dielectric grounding metal plate, an upper dielectric layer, a lower dielectric layer and a lower dielectric grounding metal plate from top to bottom, wherein an upper filter is printed on the lower surface of the upper dielectric layer, and a lower filter is printed on the upper surface of the lower dielectric layer. According to the filter, frequency selectivity is good, out-of-band rejection is strong, -43dB out-of-band rejection is formed at 28.6 GHz of an upper sideband, and -49dB out-of-band rejection is formed at 30.7 GHz of a lower sideband; and in the range of 29.1 GHz to 30.1 GHz, return loss is lower than -10dB, insertion loss is lower than 3dB, and the change in the whole frequency range is + / -0.5 dB.

Description

Technical field[0001]The present invention relates to a filter, and more particularly to a filter based on printing spine waveguide technique.Background technique[0002]The flat microstrip microwave filter is an ideal solution for a millimeter wave band due to low cost, easy production, low profile, light, easy to debug, cost, etc.. The RF material and circuit printing technology of the printed circuit board PCB in the past few decades have been significantly improved, but the radiation leakage and power dissipation of the interior of the medium make the insertion loss of the microstrip filter is still high, especially in millimeters. Band. Based on the traditional microstrip theory has low band inhibitory degree, high insertion loss, large radiation loss, large spatial radiation, and other parasitic modes can be easily displayed in millimeter bands.Inventive content[0003]Apparatus: The present invention is intended to solve the above-mentioned shortcomings of the prior art, providin...

Claims

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Application Information

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IPC IPC(8): H01P1/212H01P1/208
CPCH01P1/212H01P1/2088
Inventor 许锋李茂娅
Owner NANJING UNIV OF POSTS & TELECOMM
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