Antenna performance improvement system and improvement method

Abstract

The present invention discloses an antenna performance improvement system and method. The antenna performance improvement system comprises: a first quartz dielectric substrate and a second quartz dielectric substrate arranged above and below each other; a resonator layer disposed between the first and second quartz dielectric substrates; the resonator layer comprising: a flower-shaped resonator disposed in the middle of the resonator layer and I-shaped resonators disposed on either side of the flower-shaped resonator; the two energy states generated by the two resonators undergo destructive interference to achieve group velocity control; a trapezoidal truncated cone resonator disposed on the upper layer of the first quartz dielectric substrate; the trapezoidal truncated cone resonator is formed by stacking and connecting multiple layers of vanadium dioxide layers and multiple layers of quartz dielectric substrates; and a vanadium dioxide layer is disposed on the lower layer of the second quartz dielectric substrate. The present invention utilizes the phase change properties of vanadium dioxide to transmit or absorb electromagnetic signals of different frequency bands, thereby improving antenna performance.

Description

Technical Field

[0001] The present invention relates to an antenna performance improvement system and an improvement method, belonging to the technical field of electronic communications. Background Art

[0002] The network layer of the Agricultural Internet of Things (IoT), which transmits information via communications networks, serves as a link between the perception layer and the application layer. It's like the human nervous system, responsible for securely and reliably transmitting information acquired by the perception layer to the application layer, where it is then processed according to specific application requirements. However, the development of China's Agricultural Internet of Things (IoT) industry is subject to numerous limitations. Agricultural big data acquisition takes a long time to acquire, is widely distributed, and has a massive volume. The industry also faces issues such as lagging agricultural data development, poor usability, a lack of data standards, and inaccurate data, leading to numerous difficulties in the practical application of agricultural big data.

[0003] Existing antenna signal transmission coverage is limited, and antenna signals are susceptible to electromagnetic interference, resulting in a complex system that requires a large number of sensors to achieve full regional monitoring coverage. To compensate for signal inaccuracies, a large number of spatial filtering devices are required to purify the signal. This results in high construction costs for a complete agricultural IoT system, significantly hindering its development. Existing radomes used in agricultural IoT information transmission systems have limited functionality, primarily protecting the internal structure of the antenna. However, when both the antenna and radome are operating simultaneously, the presence of the radome can affect the antenna's proper operation, such as affecting signal gain and directivity, and thus compromising the accuracy of information transmission. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art by providing a system and method for improving antenna performance. These systems utilize the phase change properties of vanadium dioxide to transmit or absorb electromagnetic signals in different frequency bands, thereby enhancing antenna performance. To achieve this objective, the present invention employs the following technical solutions:

[0005] In a first aspect, the present invention provides an antenna performance improvement device, comprising:

[0006] a first quartz dielectric substrate and a second quartz dielectric substrate arranged one above the other;

[0007] A resonator layer is provided between the first quartz dielectric substrate and the second quartz dielectric substrate. The resonator layer includes: a flower-shaped resonator provided in the middle of the resonator layer and I-shaped resonators provided on the left and right sides of the flower-shaped resonator. The two energy states generated by the two resonators undergo destructive interference to achieve group velocity control.

[0008] A trapezoidal truncated cone resonator is provided on the upper layer of the first quartz dielectric substrate, and the trapezoidal truncated cone resonator is composed of multiple layers of vanadium dioxide layers and multiple layers of quartz dielectric substrates stacked and connected; a vanadium dioxide layer is provided on the lower layer of the second quartz dielectric substrate; the phase change characteristics of vanadium dioxide are used to transmit or absorb electromagnetic signals of different frequency bands.

[0009] In combination with the first aspect, optionally, the group velocity control causes the phase of the electromagnetic signal to be delayed to produce a slow light effect, and the frequency range of the electromagnetic signal produced by the slow light effect is 0.402 THz to 1.053 THz, and the maximum group delay is 158 ps.

[0010] In combination with the first aspect, optionally, there is a transmission window in the group velocity control, the frequency range of the transmission window is 0.402 THz to 1.053 THz, and the transmission window is used to filter electromagnetic signals outside the frequency range.

[0011] In combination with the first aspect, optionally, utilizing the phase change characteristics of vanadium dioxide to transmit or absorb electromagnetic signals of different frequency bands includes:

[0012] When the temperature is less than 68°C, the electromagnetic signal in the range of 0.402 THz to 1.053 THz is transmitted.

[0013] When the temperature is greater than or equal to 68°C, electromagnetic signals in the range of 0.346 THz to 0.841 THz are absorbed.

[0014] In combination with the first aspect, optionally, the resonator layer is fixed to the first quartz dielectric substrate and the second quartz dielectric substrate by using a um-level coating process.

[0015] In combination with the first aspect, optionally, the um-level coating process is a chemical reaction deposition coating method.

[0016] In combination with the first aspect, optionally, the relative dielectric constant of the first quartz dielectric substrate and the second quartz dielectric substrate is set to 3.793, the loss tangent value is 0.0008, and the thickness is 1 μm.

[0017] In combination with the first aspect, optionally, the flower-shaped resonator and the I-shaped resonator are made of gold with a thickness of 3 μm.

[0018] In a second aspect, the present invention provides a method for improving antenna performance based on the first aspect, comprising:

[0019] Acquiring the working state of the antenna as sending electromagnetic signals or receiving electromagnetic signals;

[0020] According to the obtained working status, the ambient temperature is adjusted, and the phase change characteristics of vanadium dioxide are used to transmit or absorb electromagnetic signals in different frequency bands.

[0021] In combination with the second aspect, optionally, when the antenna is in a working state of receiving electromagnetic signals,

[0022] The electric field component of the incident electromagnetic signal excites the flower-shaped resonator and the I-shaped resonator of the resonator layer. The two energy states generated by the two resonators undergo destructive interference to achieve group velocity control, control the phase of the electromagnetic signal, and produce a slow light effect.

[0023] Compared with the prior art, the antenna performance improvement system and method provided by the embodiments of the present invention have the following beneficial effects:

[0024] The present invention comprises a first quartz dielectric substrate and a second quartz dielectric substrate arranged vertically; a resonator layer is disposed between the first and second quartz dielectric substrates. The resonator layer comprises a flower-shaped resonator disposed in the middle of the resonator layer and I-shaped resonators disposed on the left and right sides of the flower-shaped resonator. The two energy states generated by the two resonators undergo destructive interference to achieve group velocity control. The present invention utilizes group velocity control to generate a transmission window ranging from 0.402THz to 1.053THz, which can filter out transmission signals outside this frequency band, exhibits excellent anti-interference performance, and functions as a signal filter. The present invention utilizes a special topological design of the resonator layer to achieve group velocity control technology through destructive interference between the two energy states, thereby causing the signal to produce a slow light effect. The invention can be applied to optical communications and all-optical networks.

[0025] The present invention provides a trapezoidal truncated cone resonator on the upper layer of the first quartz dielectric substrate. The trapezoidal truncated cone resonator is composed of multiple layers of vanadium dioxide and multiple layers of quartz dielectric substrates stacked and connected. The second quartz dielectric substrate provides a vanadium dioxide layer on the lower layer. The phase change properties of vanadium dioxide are utilized to transmit or absorb electromagnetic signals of different frequency bands. This invention breaks through the design concept of traditional antenna performance improvement systems by introducing vanadium dioxide, a phase change temperature control material. By selectively transmitting or absorbing electromagnetic signals of a fixed frequency band, the frequency selection function is achieved, enabling the transmission and reception of antenna signals to operate in different frequency bands without interfering with each other.

[0026] The present invention has multi-functions, high performance, and low loss, and can ensure the accuracy of the information transmission process of the agricultural Internet of Things. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic structural diagram of an antenna performance improvement device provided in Embodiment 1 of the present invention;

[0028] Figure 2is a schematic diagram of a resonator layer in an antenna performance improvement device provided in Example 1 of the present invention;

[0029] Figure 3 1 is a schematic diagram of a trapezoidal truncated cone resonator in an antenna performance improvement device provided in Example 1 of the present invention;

[0030] Figure 4 This is a schematic diagram of the electromagnetically induced transparency phenomenon generated by an antenna performance improvement device provided in Example 1 of the present invention at a temperature below 68°C, where the performance is represented by the transmission coefficient;

[0031] Figure 5 This is a schematic diagram of the electromagnetic induced absorption phenomenon generated by an antenna performance improvement device provided in Example 1 of the present invention at a temperature above 68°C, where the performance is represented by the absorption coefficient;

[0032] Figure 6 This is a schematic diagram of the slow light effect produced by an antenna performance improvement device provided in Example 1 of the present invention, where the performance is represented by group delay.

[0033] In the picture:

[0034] 1. Trapezoidal truncated cone resonator; 1-1. Multilayer vanadium dioxide layer; 1-2. Multilayer quartz dielectric substrate;

[0035] 2. First quartz dielectric substrate; 3. Second quartz dielectric substrate; 3-1. Flower-shaped resonator; 3-2. I-shaped resonator; 4. Vanadium dioxide layer. Implementation Method

[0036] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Example

[0037] like Figure 1 As shown, this embodiment introduces an antenna performance improvement device, comprising: a first quartz dielectric substrate 2 and a second quartz dielectric substrate 3 arranged one above the other. A resonator layer is provided between the first quartz dielectric substrate 2 and the second quartz dielectric substrate 3. A trapezoidal truncated pyramid resonator 1 is provided on the upper layer of the first quartz dielectric substrate 2, and a vanadium dioxide layer 4 is provided on the lower layer of the second quartz dielectric substrate 3. The structural dimensions are as follows: h 1 represents the thickness of the first quartz dielectric substrate 2, h 2 represents the thickness of the second quartz dielectric substrate 3, h 3 represents the thickness of the vanadium dioxide layer 4, h 4 represents the thickness of the resonator layer.

[0038] In this embodiment, the relative dielectric constant of the first quartz dielectric substrate 2 and the second quartz dielectric substrate 3 is set to 3.793, the loss tangent value is 0.0008, and the thickness is 1 μm.

[0039] like Figure 2 As shown, the resonator layer includes: a flower-shaped resonator 3-1 arranged in the middle of the resonator layer and I-shaped resonators 3-2 arranged on the left and right sides of the flower-shaped resonator 3-1.

[0040] like Figure 2 As shown, the structural dimensions of the resonator layer are as follows: l 1 represents the side length of the second quartz dielectric substrate 3, l 2 represents the length of the upper / lower part of the rectangle of the I-shaped resonator 3-2, l 3 represents the width of the rectangle in the middle of the I-shaped resonator 3-2, l 4 represents the distance from the outer edge of the rectangle in the middle of the right / left I-shaped resonator 3-2 to the edge of the second quartz dielectric substrate 3, l 5 represents the length of the rectangle in the middle of the I-shaped resonator 3-2, l 6 represents the width of the upper / lower rectangle of the I-shaped resonator 3-2, r 1 represents the length of the major axis of the elliptical part in the middle of the flower-shaped resonator 3-1, r 2 represents the length of the minor axis of the middle elliptical portion of the flower-shaped resonator 3-1.

[0041] In this embodiment, the material of the flower-shaped resonator 3-1 and the I-shaped resonator 3-2 is gold, with a thickness of 3 μm and a conductivity of 4.561×10 7 S·m -1 .

[0042] The resonator layer is fixedly bonded to the first quartz dielectric substrate 2 and the second quartz dielectric substrate 3 using a micrometer-level coating process. This micrometer-level coating process is a novel technique for forming a new surface on a substrate using different materials. Examples include vacuum evaporation, chemical reaction deposition coating, and sol-gel methods. In this embodiment, a chemical reaction deposition coating method is employed. Hypophosphite and formaldehyde are used as reducing agents to induce a chemical reduction reaction in the solution in which the resonator is placed. A coating is then precipitated and deposited at the solid-liquid interface of the plated component. Compared to existing technologies, this method offers advantages such as simple equipment and low cost.

[0043] like Figure 3As shown, the trapezoidal truncated cone resonator 1 is composed of multiple layers of vanadium dioxide 1-1 and multiple layers of quartz dielectric substrate 1-2 stacked and spliced ​​at intervals. The multilayer quartz dielectric substrate 1-2 is used to isolate the coupling between the multiple layers of vanadium dioxide 1-1. In this embodiment, the trapezoidal truncated cone resonator 1 includes eleven circular layers of multilayer vanadium dioxide 1-1 and ten circular layers of multilayer quartz dielectric substrate 1-2. Each single-layer structure in the trapezoidal truncated cone resonator 1 forms a single-frequency absorption with the resonator layer. The more layers there are, the wider the absorption bandwidth. The trapezoidal truncated cone resonator 1 with a multilayer structure can increase the absorption bandwidth. Compared with the existing technology, the conical structure has a better effect on regulating electromagnetic waves.

[0044] like Figure 3 As shown, the dimensions of the trapezoidal truncated cone resonator 1 are as follows: r 3 represents the bottom diameter of the trapezoidal truncated cone resonator 1, r 4 represents the top diameter of the trapezoidal truncated cone resonator 1, h 5 represents the thickness of the trapezoidal truncated cone resonator 1, o 1 represents the thickness of the multilayer vanadium dioxide layer 1-1 constituting the trapezoidal truncated cone resonator 1, o 2 represents the thickness of the multilayer quartz dielectric substrate 1-2 constituting the trapezoidal truncated cone resonator 1, u It represents the difference in radius between the stacked multilayer vanadium dioxide layer 1-1 and the multilayer quartz dielectric substrate 1-2.

[0045] The dimensional parameters of an antenna improvement system provided in this embodiment are as follows:

[0046] parameter <![CDATA[ h 1]]> <![CDATA[ h 2]]> <![CDATA[ h 3]]> <![CDATA[ h 4]]> <![CDATA[ h 5]]> <![CDATA[ r 1]]> Value (μm) 1 μm 1 μm 8 μm 3 μm 23 μm 45 μm parameter <![CDATA[ r 2]]> <![CDATA[ r 3]]> <![CDATA[ r 4]]> <![CDATA[ l 1]]> <![CDATA[ l 2]]> <![CDATA[ l 3]]> Value (μm) 65 μm 53 μm 89 μm 250 μm 60 μm 16 μm parameter <![CDATA[ l 4]]> <![CDATA[ l 5]]> <![CDATA[ l 6]]> <![CDATA[ o 1]]> <![CDATA[ o 2]]> Value (μm) 27 μm 200 μm 16 μm 0.5 μm 2 μm 2 μm

[0047] An antenna performance improvement system is applied to signals in the terahertz band. When electromagnetic waves in the terahertz band are incident, the electric field component of the incident electromagnetic waves directly excites the resonator layer. The flower-shaped resonator 3-1 is directly excited by the electric field signal to produce electric resonance, and the I-shaped resonator 3-2 is directly excited by the electric field signal to produce electric resonance. The two energy states undergo destructive interference to achieve group velocity control. The group velocity control delays the phase of the electromagnetic signal, producing a slow light effect.

[0048] Group velocity control technology has a transmission window ranging from 0.402 THz to 1.053 THz. The transmission window is used to filter electromagnetic signals outside the frequency range. It can filter out transmission signals outside this frequency band, has excellent anti-interference performance, and acts as a signal filter.

[0049] An antenna performance improvement system utilizes the phase change characteristics of vanadium dioxide to transmit or absorb electromagnetic signals in different frequency bands.

[0050] The conductivity of vanadium dioxide is adjusted by changing the temperature. When the temperature is less than 68°C, the conductivity of vanadium dioxide is approximately 0, showing a dielectric state. The trapezoidal truncated cone resonator 1 is equivalent to being inactive. The flower-shaped resonator 3-1 and the I-shaped resonator 3-2 of the resonator layer are coupled to each other to form a transmission function. Figure 4 The figure shows the electromagnetically induced transparency phenomenon that occurs at a temperature below 68°C. The performance is expressed in terms of the transmission coefficient, which transmits electromagnetic signals in the range of 0.402THz to 1.053THz. The electromagnetically induced transparency phenomenon also produces a phase delay of the electromagnetic wave, which causes the human eye to perceive the light as slowing down, thus accompanied by the slow light effect. Figure 4 As shown, the slow light effect occurs between 0.402 THz and 1.053 THz, and the performance is Figure 6 The group delay shown in Figure 2 shows that the maximum group delay is 158 ps. Figure 5 As shown, when the temperature is greater than or equal to 68°C, electromagnetic signals in the range of 0.346 THz to 0.841 THz are absorbed.

[0051] The conductivity of vanadium dioxide is adjusted by changing the temperature. When the temperature is greater than or equal to 68°C, the conductivity of vanadium dioxide is approximately 300,000 S / m, showing a metallic state. The trapezoidal truncated cone resonator 1 destroys the transmission function of the transmission function structure formed by the resonator layer, regulates the coupling phase, and forms an absorption function. Figure 5 The figure shows the electromagnetic induced absorption phenomenon generated at temperatures greater than or equal to 68°C. The performance is expressed by the absorption coefficient, which absorbs electromagnetic signals in the range of 0.346 THz to 0.841 THz.

[0052] This embodiment utilizes the temperature-controlled phase change characteristics of vanadium dioxide to realize the conversion of group velocity control technology to resonance absorption technology, and switches the dual functions of selective transmission or absorption of electromagnetic signals in a set frequency band. Figure 5 、 Figure 6 The conversion of group velocity control technology to resonant absorption technology is achieved by utilizing the temperature-controlled phase change properties of vanadium dioxide, realizing the functional diversity of the antenna performance improvement system.

[0053] Through specialized design, the antenna performance improvement system provided in this embodiment differs from traditional radomes, which interfere with antenna performance during operation. In addition to providing basic physical protection for the antenna, it also features frequency selection, enabling antenna signal transmission and reception to operate in different frequency bands without interfering with each other. This embodiment utilizes a unique resonator layer topology design to achieve group velocity control through destructive interference between two energy states, thereby creating a slow-light effect on the signal. This system is applicable to optical communications and all-optical networks, and can also function as a signal filter.

[0054] The antenna performance improvement system provided in this embodiment has the characteristics of multi-function, high performance and low loss, and can ensure the accuracy of the agricultural Internet of Things information transmission process. Example

[0055] This embodiment provides a method for improving antenna performance based on the first embodiment, including:

[0056] Acquiring the working state of the antenna as sending electromagnetic signals or receiving electromagnetic signals;

[0057] According to the obtained working status, the ambient temperature is adjusted, and the phase change characteristics of vanadium dioxide are used to transmit or absorb electromagnetic signals in different frequency bands.

[0058] Specifically, when the antenna is in the working state of receiving electromagnetic signals,

[0059] The electric field component of the incident electromagnetic signal excites the flower-shaped resonator 3-1 and the I-shaped resonator 3-2 of the resonator layer, and the two energy states generated by the two resonators undergo destructive interference to achieve group velocity control, control the phase of the electromagnetic signal, and produce a slow light effect.

[0060] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they may modify the technical solutions described in the above embodiments or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions of the embodiments of the present invention. Such improvements and variations should also be considered within the scope of protection of the present invention.

Claims

1. An antenna performance improvement device, characterized in that: include: a first quartz dielectric substrate and a second quartz dielectric substrate arranged one above the other; A resonator layer is provided between the first quartz dielectric substrate and the second quartz dielectric substrate. The resonator layer includes: a flower-shaped resonator provided in the middle of the resonator layer and I-shaped resonators provided on the left and right sides of the flower-shaped resonator. The two energy states generated by the two resonators undergo destructive interference to achieve group velocity control. A trapezoidal truncated cone resonator is provided on the upper layer of the first quartz dielectric substrate. The trapezoidal truncated cone resonator is composed of multiple layers of vanadium dioxide layers and multiple layers of quartz dielectric substrates stacked and spliced ​​at intervals; a vanadium dioxide layer is provided on the lower layer of the second quartz dielectric substrate; and the phase change characteristics of vanadium dioxide are utilized to transmit or absorb electromagnetic signals of different frequency bands.

2. The antenna performance improvement device according to claim 1, wherein: The group velocity control causes the phase of the electromagnetic signal to be delayed, generating a slow light effect. The frequency range of the electromagnetic signal generated by the slow light effect is 0.402 THz to 1.053 THz, and the maximum group delay is 158 ps.

3. The antenna performance improvement device according to claim 1, wherein: There is a transmission window in the group velocity control, the frequency range of the transmission window is 0.402 THz to 1.053 THz, and the transmission window is used to filter electromagnetic signals outside the frequency range.

4. The antenna performance improvement device according to claim 1, wherein: The method of utilizing the phase change characteristics of vanadium dioxide to transmit or absorb electromagnetic signals of different frequency bands includes: When the temperature is less than 68°C, the electromagnetic signal in the range of 0.402 THz to 1.053 THz is transmitted. When the temperature is greater than or equal to 68°C, electromagnetic signals in the range of 0.346 THz to 0.841 THz are absorbed.

5. The antenna performance improvement device according to claim 1, wherein: The resonator layer is fixedly connected to the first quartz dielectric substrate and the second quartz dielectric substrate by using a μm-level coating process.

6. The antenna performance improvement device according to claim 5, characterized in that: The μm-level coating process is a chemical reaction deposition coating method.

7. The antenna performance improvement device according to claim 1, wherein: The relative dielectric constant of the first quartz dielectric substrate and the second quartz dielectric substrate is set to 3.793, the loss tangent value is 0.0008, and the thickness is 1 μm.

8. The antenna performance improvement device according to claim 1, wherein: The material of the flower-shaped resonator and the I-shaped resonator is gold, and the thickness is 3 μm.

9. An antenna performance improvement method based on the antenna performance improvement device according to any one of claims 1 to 8, characterized in that: include: Acquiring the working state of the antenna as sending electromagnetic signals or receiving electromagnetic signals; According to the obtained working status, the ambient temperature is adjusted, and the phase change characteristics of vanadium dioxide are used to transmit or absorb electromagnetic signals in different frequency bands.

10. The antenna performance improvement method according to claim 9, wherein: Also includes: When the antenna is working to receive electromagnetic signals, The electric field component of the incident electromagnetic signal excites the flower-shaped resonator and the I-shaped resonator of the resonator layer. The two energy states generated by the two resonators undergo destructive interference to achieve group velocity control, control the phase of the electromagnetic signal, and produce a slow light effect.

Images