CN115621686B - Polyaniline-based dual-polarized radar switch device and preparation method thereof - Google Patents
Polyaniline-based dual-polarized radar switch device and preparation method thereof Download PDFInfo
- Publication number
- CN115621686B CN115621686B CN202211628968.XA CN202211628968A CN115621686B CN 115621686 B CN115621686 B CN 115621686B CN 202211628968 A CN202211628968 A CN 202211628968A CN 115621686 B CN115621686 B CN 115621686B
- Authority
- CN
- China
- Prior art keywords
- layer
- polyaniline
- grid electrode
- metal
- based dual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention relates to the technical field of electromagnetic countermeasure and stealth, in particular to a polyaniline-based dual-polarized radar switch device and a preparation method thereof, wherein the polyaniline-based dual-polarized radar switch device comprises periodic structure units which are periodically arranged along the horizontal direction and the vertical direction; the periodic structure unit sequentially comprises a first metal patch layer, a first dielectric layer, a first polyaniline material layer, a first conductive tape layer, a first electrolyte layer, a first grid electrode, a supporting dielectric layer, a second grid electrode, a second electrolyte layer, a second conductive tape layer, a second polyaniline material layer, a second dielectric layer and a second metal patch layer; the support dielectric layer is used for supporting the first grid electrode and the second grid electrode which are orthogonal; the invention improves the wave-transparent rate difference between two states of the device switch, and provides a good radar switch device which can work under horizontal polarization and vertical polarization at the same time and has high wave-transparent and strong shielding.
Description
Technical Field
The invention relates to the technical field of electromagnetic countermeasure and stealth, in particular to a polyaniline-based dual-polarized radar switch device and a preparation method thereof.
Background
The radar switch device can realize electromagnetic wave time division multiplexing, when the power is on, the radar switch device is opened to present a wave-transparent state, and can normally transmit electromagnetic wave signals, and when the power is off, the radar switch device is closed to present a shielding state, so that the radar switch device can be widely applied to stealth of electromagnetic windows of weaponry such as airplanes, missiles, ships and warships, and the electromagnetic interference resistance of an antenna/seeker is improved.
Polyaniline (PANI) is a long-chain conjugated polymer, is composed of phenylenediamine and quinonediimine units, and has good conductivity and unique redox reversibility, namely, reversible conversion can be carried out between eigenstate polyaniline and doped polyaniline with different oxidation degrees through corresponding redox reactions. The intrinsic state PANI belongs to an insulating state, the doped state PANI is a conductive state, and the control target of the conductivity of the PANI can be realized by controlling the oxidation-reduction potential.
At present, the published literature is mostly limited to the shielding state of doped polyaniline, song Yuexian, wang Gongli, zheng Yuansuo, etc. the preparation of the high-conductivity polyaniline film and the research on the electromagnetic shielding performance thereof [ J ] Polymer science, 2002 (1): 94 ] the literature reports that the shielding performance of more than 20dB can be obtained by using the polyaniline with high conductivity as the shielding material in the frequency range of 10MHz to 1 GHz. When the thickness of the high-conductivity polyaniline film exceeds 20 mu m, the shielding effectiveness is more than 40dB, and the high-conductivity polyaniline film can be used as an excellent electromagnetic shielding material.
Rose et al reported a polyaniline-based microwave shutter device with grid electrodes Rose T L, D' Antonio S, jillson M H, et al, A microwave shutter using conductive polymers Synthetic Metals, 1997, 85 (1~3): 1439 to 1440, preparation of camphorsulfonic acid doped polyaniline, solid polymer electrolyte and LixMn 2 O 4 The electrodes are combined together layer by layer, au or Cu electrodes are arranged at the positions opposite to the surface of the electrolyte, the width of the electrodes is 0.127mm, and the distance between the electrodes is 0.127mm. The initial transmittance of the polyaniline microwave shutter device is 4.8%, and at the moment, the doped polyaniline is in a conductive state. The electromagnetic performance of the device is not greatly changed when +/-1V voltage is circularly applied to the grid electrode. However, when the applied voltage is increased to 2V, the device transmittance begins to increase, to 42% after about 10min, and increasing the switching voltage increases the switching rate, but also decreases the difference in transmittance between the shielded and wave-transparent states.
Around the preparation and application of polyaniline, a national institute of Chinese academy of sciences, changchun institute Wang Xiangong team develops various radar switch devices with controllable electromagnetic properties based on polyaniline, and obtains a series of research results: by optimizing the synthesis process of doped PANI, the conductivity of the doped PANI can reach 10 5 S/m, the polyaniline switching electrode basically adopts a grid electrode, the smaller the grid electrode interval is, the faster the switching speed is, the better the reversibility change is, and the lower the required driving voltage is.
The excellent polyaniline-based radar switch device has the advantages that firstly, the switch of the device is reversible and high in speed, secondly, the wave-transmitting rate difference between two states of the switch of the device is as high as possible, namely, the wave-transmitting rate is high enough when the switch is opened, the wave-transmitting rate is as low as possible when the switch is closed, and thirdly, the starting voltage of the switch of the device is as low as possible. Therefore, the development of the high-performance polyaniline-based radar switch device can optimize the doping PANI process or increase the speed and reduce the starting voltage by shortening the switching electrode interval.
However, the grid electrode spacing is reduced, and meanwhile, the influence on wave transmission is large, and patent CN115360528a reports a radar switching frequency selection surface loaded with polyaniline, and solves the influence of a switching electrode on wave transmission. However, after the polyaniline is powered on, the positive electrode and the negative electrode drive the surfaces of the polyaniline to respectively generate redox reactions, and the PANI is converted from a shielding state to a wave-transparent state, at this time, the polyaniline does not convert to the wave-transparent state at the middle area, i.e., the redox junction, and is still in the shielding state, and the patent CN115360528a only solves the influence of the switching electrode on wave-transparent and does not solve the influence of the conductive strip at the PANI redox junction on wave-transparent.
Disclosure of Invention
The invention provides a polyaniline-based dual-polarized radar switch device with a novel structure, aiming at solving the problems of polarization and angle of a polyaniline-based radar switch device during reversible high-speed switching and improving the wave transmittance difference between two states of the device switch.
The invention provides a polyaniline-based dual-polarized radar switch device, which comprises periodic structure units which are periodically arranged along the horizontal direction and the vertical direction;
the periodic structure unit sequentially comprises a first metal patch layer, a first dielectric layer, a first polyaniline material layer, a first conductive tape layer, a first electrolyte layer, a first grid electrode, a supporting dielectric layer, a second grid electrode, a second electrolyte layer, a second conductive tape layer, a second polyaniline material layer, a second dielectric layer and a second metal patch layer;
the support dielectric layer is used for supporting the first grid electrode and the second grid electrode which are orthogonal.
Preferably, the first metal patch layer and the second metal patch layer are respectively composed of four metal squares; the first dielectric layer is used for supporting the metal square in the first metal patch layer, and the second dielectric layer is used for supporting the metal square in the second metal patch layer.
Preferably, the first conductive tape layer is a first conductive tape formed in the polyaniline electrochemical reaction transition region, the second conductive tape layer is a second conductive tape formed in the polyaniline electrochemical reaction transition region, the direction of the first conductive tape is consistent with the direction of the first grid electrode, and the direction of the second conductive tape is consistent with the direction of the second grid electrode.
Preferably, the first grid electrode is a vertical direction electrode, and the first grid electrode is composed of two vertical direction first metal strips; the second grid electrode is a horizontal electrode, the second grid electrode is composed of two second metal strips in the horizontal direction, and the width of each second metal strip is consistent with that of each first metal strip.
Preferably, the first electrolyte layer and/or the second electrolyte layer is/are ionic liquid, and the dielectric constant of the ionic liquid is between 1 and 6; the loss tangent tan delta of the first electrolyte layer and/or the second electrolyte layer is less than or equal to 0.01, and the thickness of the first electrolyte layer and/or the second electrolyte layer is 100 mu m +/-10 mu m.
Preferably, the conductivity of the first polyaniline material layer and/or the second polyaniline material layer is more than or equal to 10 4 S/m, dielectric loss between 1 and 3 and thickness between 2 and 4 mu m.
Preferably, the supporting dielectric layer is a polyimide film, and the thickness of the polyimide film is 25.4 to 50.8 μm.
Preferably, the thickness of the first conductive tape layer and/or the second conductive tape layer is 0.1mm to 0.2mm.
Preferably, the range of the periodic interval T of the periodic structure unit is more than or equal to 5.3mm and less than or equal to 8.3mm.
The invention also provides a preparation method of the polyaniline-based dual-polarized radar switch device, which comprises the following steps:
s1, respectively manufacturing the first grid electrode and the second grid electrode on two sides of the supporting dielectric medium;
s2, respectively loading the first electrolyte layer and the second electrolyte layer on two sides of the first grid electrode and the second grid electrode;
s3, loading and doping the first polyaniline material layer and the second polyaniline material layer on two sides of the first electrolyte layer and the second electrolyte layer respectively;
s4, loading the first dielectric layer and the second dielectric layer on two sides of the first polyaniline material layer and the second polyaniline material layer respectively;
and S5, manufacturing four metal squares on the first dielectric layer and the second dielectric layer respectively to form the first metal patch layer and the second metal patch layer respectively.
The invention provides a polyaniline-based dual-polarized radar switch device with a periodic structure, wherein polyaniline switching electrodes and conductive strips at the junction of the surface oxidation reaction of polyaniline are combined to form four inductive metal loops, four metal squares are correspondingly designed to serve as capacitive function layers, the center of each inductive metal loop is overlapped with the center of each metal square, at the moment, the inductive metal loops and the capacitive function layers form a parallel LC circuit, and wave transmission of the polyaniline-based radar switch device is in a band-pass filtering effect when the polyaniline-based radar switch device is conductive; when the device is closed, the double-layer polyaniline is in a conductive state, meanwhile, the conductive polyaniline cuts off an equivalent LC loop of the inductive layer and the capacitive layer, the capacitive layer and the inductive layer cannot transmit waves, and finally, the polyaniline-based radar switch device generates a strong shielding state.
The polyaniline-based dual-polarized radar switch device and the preparation method thereof improve the wave transmittance difference between two states of the device switch, and are excellent radar switch devices which can work under horizontal polarization and vertical polarization at the same time, have high wave transmittance and strong shielding.
Drawings
Fig. 1 is a schematic structural diagram of a periodic unit structure of a polyaniline-based dual-polarized radar switch device in an embodiment of the present invention.
Fig. 2 is a schematic diagram illustrating a structure of a first metal patch layer or a second metal patch layer in a periodic unit structure according to an embodiment of the present invention.
Fig. 3 is a schematic view of the composition of the first polyaniline material layer or the second polyaniline material layer in the periodic cell structure in accordance with the embodiments of the present invention.
Fig. 4 is a schematic diagram of a first conductive tape layer or a second conductive tape layer in a periodic cell structure according to an embodiment of the invention.
Fig. 5 is a schematic view of the first grid electrode and the supporting dielectric layer in the periodic cell structure according to the embodiment of the present invention.
Fig. 6 is a schematic view showing the constitution of the second grid electrode and the supporting dielectric layer in the periodic cell structure in accordance with the embodiment of the present invention.
Fig. 7 is a schematic diagram of a feeding model after the first grid electrode and the second grid electrode in the periodic cell structure are periodically expanded according to an embodiment of the present invention.
Fig. 8 is a vertical polarization wave-transparent curve diagram of the polyaniline-based dual-polarized radar switch device in the embodiment of the present invention when being powered on.
Fig. 9 is a horizontal polarization wave-transparent curve diagram of the polyaniline-based dual-polarized radar switch device in the embodiment of the present invention when being powered on.
Fig. 10 is a graph of the vertical polarization electromagnetic shielding efficiency when the polyaniline-based dual-polarized radar switch device is not powered in the embodiment of the present invention.
Fig. 11 is a graph of the horizontal polarization electromagnetic shielding efficiency when the polyaniline-based dual-polarized radar switch device is not powered in the embodiment of the present invention.
Reference numerals are as follows:
the structure comprises a first metal patch layer 1, a first dielectric layer 2, a first polyaniline material layer 3, a first conductive tape layer 4, a first electrolyte layer 5, a first grid electrode 6, a supporting dielectric layer 7, a second grid electrode 8, a second electrolyte layer 9, a second conductive tape layer 10, a second polyaniline material layer 11, a second dielectric layer 12 and a second metal patch layer 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
In a specific embodiment of the present invention, a polyaniline-based dual-polarized radar switch device is provided, which includes periodic structure units periodically arranged in a horizontal direction and a vertical direction; as shown in fig. 1, which is a schematic structural diagram of a periodic unit structure of a polyaniline-based dual-polarized radar switch device in the embodiment of the present invention, as can be seen from the figure, the periodic unit structure sequentially includes a first metal patch layer 1, a first dielectric layer 2, a first polyaniline material layer 3, a first conductive tape layer 4, a first electrolyte layer 5, a first grid electrode 6, a supporting dielectric layer 7, a second grid electrode 8, a second electrolyte layer 9, a second conductive tape layer 10, a second polyaniline material layer 11, a second dielectric layer 12, and a second metal patch layer 13; the supporting dielectric layer 7 is used to support the first and second grid electrodes 6 and 8, which are orthogonal.
In a specific embodiment, the first metal patch layer 1 and the second metal patch layer 13 may be the same or different, the first dielectric layer 2 and the second dielectric layer 12 may be the same or different, the first polyaniline material layer 3 and the second polyaniline material layer 11 may be the same or different, and the first conductive tape layer 4 and the second conductive tape layer 10 may be the same or different; in a preferred embodiment, the first metal patch layer 1 is the same as the second metal patch layer 13, the first dielectric layer 2 is the same as the second dielectric layer 12, the first polyaniline material layer 3 is the same as the second polyaniline material layer 11, the first conductive tape layer 4 is the same as the second conductive tape layer 10, the first electrolyte layer 5 is the same as the second electrolyte layer 9, and the first grid electrode 6 and the second grid electrode 8 are switching electrodes in different directions; so as to enable the polyaniline-based dual-polarized radar switch device to achieve the optimal performance effect.
In a specific embodiment, as shown in fig. 2, the structure of the first metal patch layer or the second metal patch layer is schematically illustrated; the first metal patch layer 1 and the second metal patch layer 13 are respectively composed of four metal squares; the first dielectric layer 2 is used for supporting a metal square in the first metal patch layer 1, and the second dielectric layer 12 is used for supporting a metal square in the second metal patch layer 13; the period size of the metal patch layer is represented by T, the side length of the metal square block is represented by a, and the distance between each metal square block and the period edge is represented by S.
In a specific embodiment, as shown in fig. 3 and 4, a schematic view of a structure of the first polyaniline material layer or the second polyaniline material layer, and a schematic view of a structure of the first conductive tape layer or the second conductive tape layer are shown respectively; the first conductive tape layer 4 is a first conductive tape formed by a polyaniline electrochemical reaction transition region, the second conductive tape layer 10 is a second conductive tape formed by a polyaniline electrochemical reaction transition region, the direction of the first conductive tape is consistent with that of the first grid electrode 6, and the direction of the second conductive tape is consistent with that of the second grid electrode 8; the period of the first polyaniline material layer 3 and the second polyaniline material layer 11 is T, the vertical conductive strip formed on the first polyaniline material layer 3 is the first conductive strip layer 4, the width of the first conductive strip layer 4 is represented by W, the distance between the first conductive strip layer 4 and the periodic edge in the vertical direction is (T-W)/2, the horizontal conductive strip formed on the second polyaniline material layer 11 is the second conductive strip layer 10, the width of the horizontal conductive strip is also represented by W, and the distance between the second conductive strip layer 10 and the periodic edge in the horizontal direction is (T-W)/2.
In a specific embodiment, as shown in fig. 5 and 6, a schematic diagram of a structure of the first grid electrode and the supporting dielectric layer and a schematic diagram of a structure of the second grid electrode and the supporting dielectric layer are respectively shown; as can be seen from the figure, the period is also denoted by T, the first grid electrode 6 is a vertical electrode, and the first grid electrode 6 is made of two first metals in vertical directionsA strip is formed; the width of the two first metal strips is represented by b/2, and the two first metal strips in the vertical direction are respectively arranged at the periodic edges in the two vertical directions; the second grid electrode 8 is a horizontal electrode, the second grid electrode 8 is composed of two horizontal second metal strips, the width of the second metal strips is the same as that of the first metal strips, the width of the second metal strips is also represented by b/2, and the two horizontal second metal strips are respectively arranged at two horizontal periodic edges. The first conductive strip and the second conductive strip have different conductivities from the first metal strip and the second metal strip, the conductivities of the first metal strip in the first grid electrode 6 and the second metal strip in the second grid electrode 8 are close to an ideal conductor, the vertical conductive strip formed on the first polyaniline material layer 3 is the first conductive strip layer 4, and the horizontal conductive strip formed on the second polyaniline material layer 11 is the second conductive strip layer 10, wherein the conductivity of the second conductive strip layer 10 is more than or equal to 10 4 S/m。
In a specific embodiment, as shown in fig. 7, a schematic diagram of a periodically expanded post-feeding model for a first grid electrode and a second grid electrode is shown, a 5 × 5 array model is obtained by a horizontal second grid electrode 8 and a vertical first grid electrode 6 according to a periodic T topology, and a positive and negative electrode feeding method of an electrode adopts an energizing method shown in fig. 7.
In a preferred embodiment, the first electrolyte layer 5 and/or the second electrolyte layer 9 is an ionic liquid having a dielectric constant between 1 and 6; the first electrolyte layer 5 and/or the second electrolyte layer 9 has a loss tangent tan δ of 0.01 or less, and the first electrolyte layer 5 and/or the second electrolyte layer 9 has a thickness of 100 μm ± 10 μm. The conductivity of the first polyaniline material layer 3 and/or the second polyaniline material layer 11 is more than or equal to 10 4 S/m, dielectric loss between 1 and 3 and thickness between 2 and 4 mu m. The supporting dielectric layer 7 is a polyimide film, the thickness of the polyimide film is 25.4-50.8 microns, and the strength of the polyaniline-based dual-polarized radar switch device can be better changed by increasing the thickness; of course, the supporting dielectric layer 7 may also be selected as suchAnd (3) other materials.
In a preferred embodiment, the thickness of the first conductive tape layer 4 and/or the second conductive tape layer 10 is 0.1mm to 0.2mm. The range of the periodic interval T of the periodic structure unit is more than or equal to 5.3mm and less than or equal to 8.3mm. Through the size range of further control cycle interval, can further ensure that polyphenyl amido dual-polarized radar switch device can not produce the grating lamella, moreover, the relatively less polyphenyl amido dual-polarized radar switch device's of cycle interval switching speed is faster, and the switching voltage reduces, and is concrete, can be directed against operating frequency, through sweeping parameter calculation confirm the best cycle interval value.
In a specific embodiment, as shown in fig. 8, a vertical polarization wave-transparent curve diagram of the polyaniline-based dual-polarization radar switch device when being powered on is shown, and as can be seen from the graph, the vertical polarization wave-transparent curve diagram includes vertical polarization 0 ° irradiation, vertical polarization 30 ° irradiation, and vertical polarization 50 ° irradiation; in the frequency ranges of 14.5GHz to 18GHz and the vertical polarization within the scanning angle range of 0-50 degrees, the wave transmittance of the polyaniline-based dual-polarized radar switch device is more than or equal to 80 percent. As shown in fig. 9, it is a horizontal polarization wave-transparent curve diagram of the polyaniline-based dual-polarized radar switch device when powered on, and it can be seen from the diagram that the horizontal polarization wave-transparent curve of the polyaniline-based dual-polarized radar switch device when powered on includes horizontal polarization 0 ° irradiation, horizontal polarization 30 ° irradiation, and horizontal polarization 50 ° irradiation; the wave transmission rate of the polyaniline-based dual-polarized radar switch device is more than or equal to 80% in the scanning angle range of 0-50 degrees of horizontal polarization in the frequency ranges of 14.5GHz-18GHz. As shown in fig. 10, it is a graph of the vertical polarization electromagnetic shielding efficiency when the polyaniline-based dual-polarized radar switch device is not powered, and it can be seen from the graph, including vertical polarization 0 ° illumination, vertical polarization 30 ° illumination, and vertical polarization 50 ° illumination; in the frequency range of 1GHz to 18GHz and the scanning angle range of 0-50 degrees of vertical polarization, the electromagnetic shielding efficiency value of the polyaniline-based dual-polarized radar switch device is less than-160 dB when the radar is not electrified. As shown in fig. 11, it is a graph of the horizontal polarization electromagnetic shielding efficiency when the polyaniline-based dual-polarized radar switch device is not powered, and it can be seen from the graph, including horizontal polarization 0 ° illumination, horizontal polarization 30 ° illumination, and horizontal polarization 50 ° illumination; in the frequency range of 1GHz to 18GHz and the horizontal polarization within the scanning angle range of 0-50 degrees, the electromagnetic shielding efficiency value of the polyaniline-based dual-polarized radar switch device is less than-160 dB when the radar is not electrified.
The invention also provides a preparation method of the polyaniline-based dual-polarized radar switch device, which comprises the following steps:
s1, respectively manufacturing the first grid electrode and the second grid electrode on two sides of the supporting dielectric medium;
s2, loading the first electrolyte layer and the second electrolyte layer on two sides of the first grid electrode and the second grid electrode respectively;
s3, loading and doping the first polyaniline material layer and the second polyaniline material layer on two sides of the first electrolyte layer and the second electrolyte layer respectively;
s4, loading the first dielectric layer and the second dielectric layer on two sides of the first polyaniline material layer and the second polyaniline material layer respectively;
and S5, manufacturing four metal squares on the first dielectric layer and the second dielectric layer respectively to form the first metal patch layer and the second metal patch layer respectively.
The following description is further detailed in conjunction with specific embodiments.
Taking a radar switch device with strong shielding of 1GHz to 18GHz, scanning ranges of 14.5GHz to 18GHz and 0-50 DEG, horizontal polarization and vertical polarization and high wave transmission as an example:
preferably, according to the composition structure schematic diagram of the periodic unit structure of the polyaniline-based dual-polarized radar switch device shown in fig. 1, a radar switch frequency selection surface physical model is established, a periodic unit model is established in electromagnetic simulation software, wherein the basic material arrangement comprises,
1) A polyimide film having a relative dielectric constant ∈ r =3 and a loss tangent tan δ =0.005 was used as the supporting dielectric layer 7;
2) The first electrolyte layer 5 and the second electrolyte layer 9 are made of an ionic liquid electrolyte, and have a relative dielectric constant ∈ r =4, a low loss tangent tan δ =0.008, and a thickness of 100 μm;
3) The first polyaniline material layer 3 and the second polyaniline material layer 11 had a relative dielectric constant ∈ r =3, a loss tangent tan δ =0.005, and a thickness of 3 μm;
4) The first polyaniline material layer 3 and the second polyaniline material layer 11 form a first conductive belt layer 4 and a second conductive belt layer 10, respectively, and the width W =0.2mm;
5) The first dielectric layer 2 and the second dielectric layer 12 each used a polyimide plate having a relative dielectric constant ∈ r =3, a low loss tangent tan δ =0.005, and a thickness of 0.5mm.
Then, the electromagnetic simulation software CST or HFSS, feko and other parameter sweeping functions are adopted to search for the optimal geometric characteristics, and finally the geometric characteristic size of the radar switch device is obtained as follows:
1) Unit period interval T =5.3mm;
2) Switching electrode width b =0.2mm;
3) The side length a of the metal square =2.05mm, and the distance of each metal square from the periodic edge is S =0.3mm.
Next, the radar switch frequency selection surface is fed in the feeding manner shown in fig. 7, and exhibits a wave-transparent state when the grid electrode is energized and a shielding state when it is not energized.
Through simulation analysis, when the polyaniline-based dual-polarized radar switch device is powered on, the vertical polarization and the horizontal polarization are carried out in the frequency ranges of 0-50 degrees and 14.5 GHz-18GHz, and the wave transmission rate of the polyaniline-based dual-polarized radar switch device is more than or equal to 80 percent, as shown in fig. 8 and 9; when the polyaniline-based dual-polarized radar switch device is not powered on, the frequency ranges of 0-50 degrees, 1GHz-18GHz, vertical polarization and horizontal polarization are realized, and the electromagnetic shielding efficiency value of the polyaniline-based dual-polarized radar switch device is less than-160 dB, as shown in figures 10 and 11.
Finally, a first grid electrode 6 and a second grid electrode 8 are prepared by a standard Printed Circuit Board (PCB) process by using a double-sided copper-clad polyimide film (recommended but not limited to model: GHD051312 AJB), a first metal patch layer 1 and a second metal patch layer 13 are prepared by a standard PCB (PCB) process by using a single-sided copper-clad polyimide film (recommended but not limited to model: GSI13R 18), an ionic liquid electrolyte and doped polyaniline (i.e., a first electrolyte layer 5, a second electrolyte layer 9, a first polyaniline material layer 3 and a second polyaniline material layer 11) are coated on two sides of the orthogonal first grid electrode 6 and second grid electrode 8 by an ultrasonic spraying process, the first polyaniline material layer 3, the first conductive tape layer 4, the first electrolyte layer 5, the first grid electrode 6, the support dielectric layer 7, the second grid electrode 8, the second electrolyte layer 9, the second conductive tape layer 10 and the second polyaniline material layer 11 are encapsulated by using a polyimide film or a polyimide film, and a polyimide adhesive (recommended but not limited to model: 5413) is used for encapsulating the first and the second switch between the first and the second dual-polarized polyaniline layer 11, and the final double-sided copper-clad switch is obtained.
The polyaniline-based dual-polarized radar switch device prepared by the embodiment of the invention overcomes the problems that the wave transmission of the radar switch device is influenced by the conductive belt formed in the middle of the conventional polyaniline oxidation-reduction reaction, and the wave transmission and shielding difference of the conventional polyaniline-based radar switch device is small; the influence of a conductive strip at the redox junction of a switching electrode and polyaniline on the wave transmission of the device is comprehensively considered, the conductive strip of PANI is combined with the switching electrode, and four metal squares are adopted, so that the polyaniline-based dual-polarized radar switch device is finally invented, wherein the wave transmission rate of the polyaniline-based dual-polarized radar switch device is more than or equal to 80% under the frequency ranges of 0-50 degrees and 14.5-18GHz and vertical and horizontal polarizations; the polyaniline-based dual-polarized radar switch device fully utilizes the polyaniline-based dual-polarized radar switch device constructed by the conductive strips at the oxidation-reduction junction of polyaniline, and has electromagnetic shielding efficiency of less than-160 dB under the vertical and horizontal polarization at frequency ranges of 0-50 degrees and 1GHz-18GHz.
While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limiting the invention. Variations, modifications, substitutions and alterations of the above-described embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A polyaniline-based dual-polarized radar switch device is characterized in that the polyaniline-based dual-polarized radar switch device comprises periodic structure units which are periodically arranged along the horizontal direction and the vertical direction;
the periodic structure unit sequentially comprises a first metal patch layer, a first dielectric layer, a first polyaniline material layer, a first conductive belt layer, a first electrolyte layer, a first grid electrode, a supporting dielectric layer, a second grid electrode, a second electrolyte layer, a second conductive belt layer, a second polyaniline material layer, a second dielectric layer and a second metal patch layer;
the support dielectric layer is used for supporting the first grid electrode and the second grid electrode which are orthogonal;
the first conductive tape layer is a first conductive tape formed by a polyaniline electrochemical reaction transition region, the second conductive tape layer is a second conductive tape formed by a polyaniline electrochemical reaction transition region, the direction of the first conductive tape is consistent with that of the first grid electrode, and the direction of the second conductive tape is consistent with that of the second grid electrode;
the first metal patch layer and the second metal patch layer are respectively composed of four metal squares; the first dielectric layer is used for supporting a metal square block in the first metal patch layer, and the second dielectric layer is used for supporting a metal square block in the second metal patch layer;
the first grid electrode and the second grid electrode are combined with the first conductive strip and the second conductive strip to form four inductive metal loops, the four metal squares are used as a capacitive functional layer, the center of each metal square is respectively superposed with the center of each inductive metal loop, the inductive metal loops and the capacitive functional layer form a parallel LC circuit, and when the polyaniline-based dual-polarization radar switch device conducts electricity, wave transmission shows a band-pass filtering effect; when the polyaniline-based dual-polarization radar switch device is closed, the polyaniline of the first polyaniline material layer and the polyaniline of the second polyaniline material layer are in a conductive state, and the conductive polyaniline cuts off the LC circuit, so that wave transmission cannot be realized, and a strong shielding state is formed.
2. The polyaniline-based dual-polarized radar switching device as claimed in claim 1, wherein the first grid electrode is a vertical-direction electrode, and the first grid electrode is composed of two vertical-direction first metal strips; the second grid electrode is a horizontal electrode, the second grid electrode is composed of two second metal strips in the horizontal direction, and the width of each second metal strip is consistent with that of each first metal strip.
3. The polyaniline-based dual-polarized radar switching device as claimed in claim 1, wherein the first electrolyte layer and/or the second electrolyte layer is an ionic liquid, and the dielectric constant of the ionic liquid is between 1 and 6; the first electrolyte layer and/or the second electrolyte layer has a loss tangent tan delta of 0.01 or less, and the first electrolyte layer and/or the second electrolyte layer has a thickness of 100 [ mu ] m +/-10 [ mu ] m.
4. The polyaniline-based dual-polarized radar switching device as claimed in claim 1, wherein the conductivity of the first polyaniline material layer and/or the second polyaniline material layer is 10 or more 4 S/m, dielectric loss between 1 and 3 and thickness between 2 and 4 mu m.
5. The polyaniline-based dual-polarized radar switching device as claimed in claim 1, wherein the supporting dielectric layer is a polyimide film having a thickness of 25.4 μm to 50.8 μm.
6. The polyaniline-based dual-polarized radar switching device as claimed in claim 1, wherein the thickness of the first conductive tape layer and/or the second conductive tape layer is 0.1mm to 0.2mm.
7. The polyaniline-based dual-polarized radar switching device of claim 1, wherein the size of the periodic interval T of the periodic structure unit is in the range of 5.3mm < T < 8.3mm.
8. A method for preparing the polyaniline-based dual-polarized radar switch device as claimed in any one of claims 1 to 7, wherein the method comprises the steps of:
s1, respectively manufacturing the first grid electrode and the second grid electrode on two sides of the supporting dielectric medium;
s2, respectively loading the first electrolyte layer and the second electrolyte layer on two sides of the first grid electrode and the second grid electrode;
s3, loading and doping the first polyaniline material layer and the second polyaniline material layer on two sides of the first electrolyte layer and the second electrolyte layer respectively;
s4, loading the first dielectric layer and the second dielectric layer on two sides of the first polyaniline material layer and the second polyaniline material layer respectively;
and S5, manufacturing four metal squares on the first dielectric layer and the second dielectric layer respectively to form the first metal patch layer and the second metal patch layer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211628968.XA CN115621686B (en) | 2022-12-19 | 2022-12-19 | Polyaniline-based dual-polarized radar switch device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211628968.XA CN115621686B (en) | 2022-12-19 | 2022-12-19 | Polyaniline-based dual-polarized radar switch device and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115621686A CN115621686A (en) | 2023-01-17 |
| CN115621686B true CN115621686B (en) | 2023-03-10 |
Family
ID=84880488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211628968.XA Active CN115621686B (en) | 2022-12-19 | 2022-12-19 | Polyaniline-based dual-polarized radar switch device and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115621686B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115986342B (en) * | 2023-03-16 | 2023-07-04 | 中国科学院长春光学精密机械与物理研究所 | Polyaniline-based radar switching device and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401024A (en) * | 2006-03-09 | 2009-04-01 | 金泰克斯公司 | Vehicle rearview assembly including a high intensity display |
| WO2013114685A1 (en) * | 2012-02-01 | 2013-08-08 | 東洋紡株式会社 | Laminate, method for producing same, and method for producing device structure using same |
| CN112864630A (en) * | 2021-01-13 | 2021-05-28 | 军事科学院系统工程研究院军需工程技术研究所 | Extensible tunable frequency selection fabric and preparation method thereof |
| CN115332815A (en) * | 2022-10-14 | 2022-11-11 | 中国科学院长春光学精密机械与物理研究所 | Active frequency selective surface structure |
| CN115360528A (en) * | 2022-10-24 | 2022-11-18 | 中国科学院长春光学精密机械与物理研究所 | Radar switch frequency selective surface loaded with polyaniline |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004022674A1 (en) * | 2004-05-07 | 2005-11-24 | H.C. Starck Gmbh | Electrolytic condenser for use in electronic circuits, e.g. for computers, comprises porous electrode, dielectric, solid electrolyte and a layer containing a polymeric anion, a polyaniline or polythiophene and a binder |
| CN107240778B (en) * | 2017-06-21 | 2020-05-12 | 中国人民解放军空军工程大学 | Metamaterial antenna housing |
| CN110829018B (en) * | 2019-11-15 | 2020-11-24 | 中国科学院长春光学精密机械与物理研究所 | Broadband wide-angle frequency selective surface radome |
-
2022
- 2022-12-19 CN CN202211628968.XA patent/CN115621686B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401024A (en) * | 2006-03-09 | 2009-04-01 | 金泰克斯公司 | Vehicle rearview assembly including a high intensity display |
| WO2013114685A1 (en) * | 2012-02-01 | 2013-08-08 | 東洋紡株式会社 | Laminate, method for producing same, and method for producing device structure using same |
| CN112864630A (en) * | 2021-01-13 | 2021-05-28 | 军事科学院系统工程研究院军需工程技术研究所 | Extensible tunable frequency selection fabric and preparation method thereof |
| CN115332815A (en) * | 2022-10-14 | 2022-11-11 | 中国科学院长春光学精密机械与物理研究所 | Active frequency selective surface structure |
| CN115360528A (en) * | 2022-10-24 | 2022-11-18 | 中国科学院长春光学精密机械与物理研究所 | Radar switch frequency selective surface loaded with polyaniline |
Non-Patent Citations (1)
| Title |
|---|
| OLED显示和固态照明;李文连;《光机电信息》(第07期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115621686A (en) | 2023-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Costa et al. | Analysis and design of ultra thin electromagnetic absorbers comprising resistively loaded high impedance surfaces | |
| CN115360528B (en) | Radar switch frequency selective surface loaded with polyaniline | |
| CN107134654A (en) | Double-frequency double-circularly-poantenna antenna and its performance implementation method based on the super surface of electromagnetism | |
| CN115621686B (en) | Polyaniline-based dual-polarized radar switch device and preparation method thereof | |
| CN107565224A (en) | A kind of super surface of transmission-type polarization conversion | |
| CN209515999U (en) | A kind of circular polarization microstrip antenna | |
| CN110931969B (en) | Low RCS array antenna with reconfigurable scattering beam | |
| CN207719402U (en) | High power flush type polarization conversion antenna house | |
| CN111883933B (en) | Electric-regulation multi-band compatible intelligent camouflage structure | |
| CN112838374A (en) | Flexible active frequency selection surface and control method thereof | |
| CN112490652A (en) | X-band multi-slot loading broadband millimeter wave microstrip antenna | |
| CN113013627A (en) | Adjustable slot array antenna based on substrate integrated waveguide | |
| CN115988862B (en) | Multifunctional flexible device with broadband electromagnetic characteristic and automatic electric adjustable and preparation method thereof | |
| CN211605397U (en) | Dipole antenna | |
| CN109193146A (en) | A kind of micro-strip millimeter wave antenna | |
| Murugan et al. | Design and performance prediction of 10GHz micro strip array antenna structures | |
| CN110718748B (en) | Metamaterial unit for encoding metamaterial antenna and equivalent circuit of feed structure of metamaterial unit | |
| CN112909553A (en) | Circular polarization transmission array antenna unit based on rotation phase modulation method | |
| CN103390803A (en) | SIW (substrate integrated waveguide)-based retrodirective array antenna with polarization reversing function | |
| CN102832459B (en) | Rectangular microstrip patch antenna loaded with left-handed material layer | |
| CN107706526A (en) | High power flush type polarization conversion antenna house | |
| CN201233952Y (en) | Reader antenna for non-stop charge system | |
| CN108023177A (en) | A kind of double frequency phased array for loading ferroelectric thin-membrane phase shifter | |
| CN115986342B (en) | Polyaniline-based radar switching device and preparation method thereof | |
| CN115133276A (en) | Dual-feed low-radar-scattering-cross-section microstrip array antenna based on metamaterial |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |