Glass-based light transparent antenna

Abstract

The invention discloses a glass-based optical transparent antenna, which comprises a first dielectric layer and a second dielectric layer, a first patch is arranged on the lower surface of the first patch, a second patch is arranged on the upper surface of the second dielectric layer, the first patch comprises a radiation patch and a feeder line unit, and the radiation patch comprises a first dielectric layer and a second dielectric layer. The two grounding sheets are symmetrically arranged on the two sides of the feeder unit respectively; the second patch layer comprises a middle feeder line and grounding pieces symmetrically arranged on the two sides of the feeder line respectively. And the feeder line in the middle of the second-layer patch is connected with the feeder line unit of the first-layer patch. The optical transparent glass array antenna can be applied to the fields of high-speed rail glass, automobile windows, intelligent terminal equipment and the like, the defects that a traditional antenna is large in size, opaque and difficult to be fused with the environment are overcome, the defects that an ITO plating layer is large in loss and glass arrays cannot be arrayed are further overcome, optical transparent glass arraying is achieved, the gain of the optical transparent antenna is greatly improved, and the optical transparent antenna is suitable for large-scale popularization and application. A traditional base station is not additionally added in a densely populated area in the communication field.

Description

Technical Field

[0001] This invention belongs to the field of wireless communication technology, specifically relating to a communication antenna system applied to building windows. Background Technology

[0002] With the rapid development of information and communication, traditional base station antennas can no longer meet people's needs. The development of optically transparent antennas has brought a new direction to the development of communication systems. Optically transparent antennas mainly use conductive materials on a transparent substrate to receive and transmit electromagnetic signals. At the same time, by optimizing material and structural design, they can have the function of an antenna without affecting the high light transmittance of the transparent substrate itself.

[0003] The biggest difference between transparent antennas and traditional antennas lies in the materials used. Transparent antennas utilize transparent materials such as glass and transparent films, employing different processes to design antennas for various needs on transparent substrates. However, traditional metal antennas suffer from problems such as large size, opacity, and easy signal obstruction, making it difficult to meet the demands of modern communication devices for miniaturization, stealth, and environmental integration. Furthermore, consumer demand for aesthetics and thinness in smart terminals (such as mobile phones and wearable devices) has surged, and traditional antennas affect screen ratio and device design, thus giving rise to the innovative direction of transparent antennas. Summary of the Invention

[0004] Purpose of the invention / Technical problem This invention addresses the deficiencies and technical problems existing in the prior art by proposing a glass-based optically transparent antenna, which has the characteristics of easy arraying, easy integration, high light transmittance, and small size.

[0005] Technical Solution: To achieve the above-mentioned technical objectives, the present invention provides the following technical solution: a glass-based optically transparent antenna, comprising a first dielectric layer and a second dielectric layer, wherein a first layer patch is disposed on the lower surface of the first layer patch, and a second layer patch is disposed on the upper surface of the second dielectric layer. The first layer patch includes a radiating patch and a feeder unit connected to the radiating patch, as well as two grounding plates symmetrically disposed on both sides of the feeder unit. The second layer patch includes a central feed line and grounding plates symmetrically disposed on both sides of the feed line. The feed line in the middle of the second layer patch is connected to the feed line unit of the first layer patch.

[0006] Preferably, the first dielectric layer is made of a glass substrate, and the second dielectric layer is made of an FPC substrate.

[0007] Preferably, the first layer of the patch is made of ITO plating, and the second layer of the patch is made of copper foil.

[0008] Preferably, in the first layer of patches, the antenna element is a rectangular radiating patch, and the feed line element is a rectangular feed line.

[0009] Preferably, the dimensions of the first layer patch are as follows: Lp=20-30mm Wp=30-40mm Lf=10-20mm Wf=3-8mm L1 = 10-20mm S=0.01-2mm Lp is the length of the antenna element, Wp is the width of the antenna element, Lf is the length of the feed line element, Wf is the width of the feed line element, L1 is the width of the ground patch in the first layer, and S is the spacing between the feed line element and the ground patch.

[0010] Preferably, in the second layer patch, the width of the middle feed line is Wf=5.5mm, the width of the two side grounding plates is the same as that of the middle feed line, W2=10mm, and the spacing between the two side grounding plates and the middle feed line is S=0.5mm.

[0011] Preferably, the first dielectric layer is made of glass substrate with a thickness of 2 mm and a dielectric constant of 6.2; the second dielectric layer is made of FPC with a thickness of 0.05 mm and a dielectric constant of 3.4.

[0012] Preferably, the thickness of the ITO coating is 380 nm and the sheet resistance is 5 Ω / S.

[0013] Beneficial Effects: Compared to existing technologies, this invention achieves both high light transmittance and high antenna radiation and reception performance. It can be applied in fields such as high-speed rail glass, automobile windows, and smart terminal devices. It solves the shortcomings of traditional antennas, such as large size, opacity, and difficulty in environmental integration. The dielectric substrate uses transparent glass, and patterns are etched onto the glass to achieve antenna functionality. Furthermore, integrating the antenna with the FPC board overcomes the drawbacks of high ITO coating loss and the inability to assemble glass arrays. This integration enables the formation of transparent glass arrays, significantly improving the gain of the transparent antenna. This meets the demand in the communications field for improved communication quality in densely populated areas without the need for additional traditional base stations, allowing for practical engineering applications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the optically transparent antenna unit structure described in this invention.

[0015] Figure 2 This is a cross-sectional view of the optically transparent antenna unit structure described in this invention.

[0016] Figure 3 This is a schematic diagram of the first layer patch of the optically transparent antenna described in this invention.

[0017] Figure 4 This is a schematic diagram of the second layer patch of the optically transparent antenna described in this invention.

[0018] Figure 5 The above is a simulation result diagram of the optically transparent antenna S11 described in an embodiment of the present invention.

[0019] Figure 6 The radiation pattern of the optically transparent antenna described in this embodiment of the invention is shown at 2.6 GHz.

[0020] In the figure, there are first dielectric layer 1, first patch 2, second patch 3, and second dielectric layer 4. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise specifically stated, the relative arrangement, expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0022] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figure. For example, if the device in the figure is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations).

[0023] The present invention discloses a glass-based optically transparent antenna, mainly comprising a first dielectric layer and a second dielectric layer, wherein: the lower surface of the first layer patch is provided with a first layer patch, and the upper surface of the second dielectric layer is provided with a second layer patch; the first layer patch includes a radiating patch and a feed line unit connected to the radiating patch, and two grounding plates respectively symmetrically disposed on both sides of the feed line unit; the second layer patch includes a feed line in the middle, and grounding plates respectively symmetrically disposed on both sides of the feed line; the feed line in the middle of the second layer patch is connected to the feed line unit of the first layer patch.

[0024] like Figure 1-5 As shown, the optically transparent antenna element of this embodiment operates in the frequency band of 2.515GHz-2.675GHz. This embodiment includes a first dielectric layer 1, a first patch layer 2, a second patch layer 3, and a second dielectric layer 4. The first patch layer 2 is located on the lower surface of the first dielectric layer 1, and the second patch layer 3 is located on the upper surface of the second dielectric layer 4. This invention optimizes each parameter using the scanning parameter function of simulation software to obtain the optimal structural parameters; specifically as follows: like Figure 3 As shown, the first layer patch 2 of the optically transparent antenna unit in this embodiment consists of four etched rectangles, each composed of a rectangular radiating plate, a feed line, and two symmetrical ground planes. The vertical dimension Wp of the radiating plate is 34 mm, and the horizontal dimension Lp is 28 mm. The horizontal length Wf of the feed line is 5.5 mm, and the vertical length Lf is 13 mm. Two rectangular ground planes are etched at a horizontal distance S from the feed line, with a vertical width L1 of 10 mm.

[0025] like Figure 4As shown, the second layer patch 3 in this embodiment consists of three rectangles, namely a central feed line and two symmetrical ground planes on both sides. The horizontal length Wf of the central feed line is 5.5mm, the vertical width W2 is 10mm, and two rectangular ground planes are etched at a horizontal distance S of 0.5mm from the two sides of the feed line, with a horizontal length L2 of 15mm.

[0026] like Figure 1-4 As shown, the optically transparent antenna unit in this embodiment uses glass as the first dielectric substrate with a dielectric constant of 6.2 and a dielectric thickness of 2 mm. The second dielectric substrate is an FPC with a dielectric constant of 3.4 and a dielectric thickness of 0.05 mm. The first patch is an ITO plating with a sheet resistance of 5 Ω / S and a thickness of 380 nm. The second patch is a copper foil with a thickness of 12 μm.

[0027] The antenna element uses a rectangular radiating plate and is fed by a coplanar waveguide, with a bandwidth covering the 2.515GHz-2.675GHz frequency band for mobile 4G / 5G communication. In this embodiment, HFSS is used for simulation, and the simulation results are as follows. Figure 5-6 As shown in the figure, within the operating frequency band, S11 < -20dB, and the element exhibits omnidirectional antenna characteristics.

[0028] The above description is only a partial embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A glass-based optically transparent antenna, characterized in that: It includes a first dielectric layer and a second dielectric layer, wherein the lower surface of the first dielectric layer is provided with a first dielectric layer, and the upper surface of the second dielectric layer is provided with a second dielectric layer. The first layer patch includes a radiating patch and a feeder unit connected to the radiating patch, as well as two grounding plates symmetrically disposed on both sides of the feeder unit. The second layer patch includes a central feed line and grounding plates symmetrically disposed on both sides of the feed line. The feed line in the middle of the second layer patch is connected to the feed line unit of the first layer patch.

2. The glass-based optically transparent antenna according to claim 1, characterized in that: The first dielectric layer is made of a glass substrate, and the second dielectric layer is made of an FPC substrate.

3. The glass-based optically transparent antenna according to claim 1, characterized in that: The first layer of the patch is made of ITO plating, and the second layer of the patch is made of copper foil.

4. The glass-based optically transparent antenna according to claim 1, characterized in that: In the first layer of patches, the antenna element is a rectangular radiating patch, and the feed line element is a rectangular feed line.

5. The glass-based optically transparent antenna according to claim 4, characterized in that: The dimensions of the first layer patch are as follows: Lp=20-30mm Wp=30-40mm Lf=10-20mm Wf=3-8mm L1 = 10-20mm S=0.01-2mm Lp is the length of the antenna element, Wp is the width of the antenna element, Lf is the length of the feed line element, Wf is the width of the feed line element, L1 is the width of the ground patch in the first layer, and S is the spacing between the feed line element and the ground patch.

6. The glass-based optically transparent antenna according to claim 4, characterized in that: In the second layer patch, the width of the middle feed line is Wf=5.5mm, the width of the two side ground plates is the same as that of the middle feed line, W2=10mm, and the spacing between the two side ground plates and the middle feed line is S=0.5mm.

7. The glass-based optically transparent antenna according to claim 2, characterized in that: The first dielectric layer is made of glass substrate with a thickness of 2 mm and a dielectric constant of 6.2; the second dielectric layer is made of FPC with a thickness of 0.05 mm and a dielectric constant of 3.

4.

8. The glass-based optically transparent antenna according to claim 3, characterized in that: The thickness of the ITO coating is 380 nm, and the sheet resistance is 5 Ω / S.

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