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W-band reconfigurable microstrip filter based on intercalated graphene and manufacturing method thereof

A technology of microstrip filter and intercalated graphite, which is applied in the direction of waveguide devices, electrical components, circuits, etc., can solve the problems of single function and poor flexibility, and achieve the effect of changing single function, improving flexibility and expanding the filtering range

Active Publication Date: 2020-11-03
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a W-band reconfigurable microstrip filter based on intercalated graphene and a manufacturing method thereof, which are used to solve the poor flexibility and poor function of the filter made of the existing metal microstrip line mentioned in the above background technology. Relatively simple technical issues

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  • W-band reconfigurable microstrip filter based on intercalated graphene and manufacturing method thereof
  • W-band reconfigurable microstrip filter based on intercalated graphene and manufacturing method thereof
  • W-band reconfigurable microstrip filter based on intercalated graphene and manufacturing method thereof

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Embodiment 1

[0031] A W-band reconfigurable microstrip filter based on intercalated graphene, including a metal ground plate, a dielectric substrate, a plurality of microstrip patches and a plurality of intercalated graphene structures; wherein a layer is deposited on the bottom surface of the dielectric substrate As for the metal grounding plate, a plurality of patches are arranged in an array on the surface of the dielectric substrate to form a microstrip patch array structure, and a circle of intercalated graphene is arranged around the patch array structure.

[0032] The microstrip patch array structure adopts the design of port diagonalization, forming two coupled microstrip transmission lines of the same length, each of which is formed by coupling three microstrip patches, forming two coupling units in total , the formed band-pass filter is at least two passbands. Since the two paths are completely symmetrical, without considering the adjustment effect of the intercalated graphene str...

Embodiment 2

[0038] A method for making a W-band reconfigurable microstrip filter based on intercalation graphene, comprising the following steps:

[0039] Step 1. Use Rogers5880 as the dielectric substrate, and grind the Rogers5880 dielectric substrate so that the thickness, surface uniformity and surface finish of the substrate must meet the experimental requirements;

[0040] Step 2. Put the ground dielectric substrate into the vacuum coating machine, and coat a layer of metal Cu on the dielectric substrate as a grounding plate. Since the adhesion of the Rogers5880 dielectric substrate is not strong, it is best to coat a layer of metal Cu before plating Gr;

[0041] Step 3. Deposit a layer of metal Au array microstrip lines on the surface of the dielectric substrate by evaporation and sputtering, that is, the microstrip patch, and evaporate a circle of intercalated graphene structure around the microstrip patch. The graphene Conductivity phase change range ≥ 1000s / m.

Embodiment 3

[0043] Refer to attached Figure 1-2 , a multi-passband filter design based on microstrip array patches, where the length of each patch is 1.1mm, the width is 1.2mm, the spacing between patches is 0.02mm, and the width of intercalated graphene is 0.3mm. The distance between the sheet and the intercalated graphene is 0.01mm, the thickness of the patch is 0.1mm, the thickness of the substrate is 0.3mm, the length of the feeder is 1.1mm, the phase change range of the conductivity of the intercalated graphene material is ≥1000s / m, and the phase change switch The design is as follows:

[0044] (1) Phase transition of intercalated graphene at no phase transition;

[0045] (2) figure 1 3 and 4 intercalated graphene phase transitions in ;

[0046] (3) figure 1 Intercalated graphene phase transitions at 1, 2, 5, and 6 in ;

[0047] The phase change return loss and insertion loss are obtained by referring to the attached Figure 3-5 .

[0048] In summary, the present invention is a...

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Abstract

The invention provides a W-band reconfigurable microstrip filter based on intercalated graphene. The W-band reconfigurable microstrip filter comprises a metal grounding plate, a dielectric substrate,a plurality of microstrip patches and a plurality of intercalated graphene structures, wherein a layer of the metal grounding plate is deposited on the bottom surface of the dielectric substrate, theplurality of patches are arranged on the surface of the dielectric substrate in an array manner to form a microstrip patch array structure, and a circle of the intercalated graphene is arranged aroundthe patch array structure. According to the invention, the change of the conductivity of the intercalated graphene affects the coupling capacitance with the patch unit, and finally changes the resonant frequency and passband number of the filter, so the change of the microstrip filter in a frequency range is more flexible, the problem of irreversible operation of a printed board is solved, and the application field in production practice is expanded. Structurally, the micro-strip coupling filter of an array structure is adopted, and the size of the filter can be further reduced on the premisethat the performance is not changed.

Description

technical field [0001] The invention mainly relates to the technical field of W-band microstrip filters, in particular to a technical method for realizing filter passband reconstruction and resonant frequency adjustment by using changes in the conductivity of intercalated graphene. Background technique [0002] In industrial production, the earliest passive filter composed of lumped components is still used in production practice because of its high reliability, low cost and simple structure. However, due to factors such as its large size and poor flexibility, distributed element filters based on microstrip lines are more and more widely used. [0003] Filters made of metal microstrip lines are usually divided into high and low impedance filters and parallel coupling filters, which have the advantages of high reliability, low production cost and small size, but the filters made of existing metal microstrip lines have poor flexibility. , The function is relatively single. ...

Claims

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Application Information

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IPC IPC(8): H01P1/203H01P11/00
CPCH01P1/203H01P11/007
Inventor 陈兴盛桑磊郑君刘煜文
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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