WO2023226541A1

WO2023226541A1 - Signal transmitting apparatus and antenna system

Info

Publication number: WO2023226541A1
Application number: PCT/CN2023/081270
Authority: WO
Inventors: 张茜茜; 孙静; 赵鑫
Original assignee: 普罗斯通信技术（苏州）有限公司
Priority date: 2022-05-24
Filing date: 2023-03-14
Publication date: 2023-11-30
Also published as: CN114824794A

Abstract

The present disclosure relates to a signal transmitting apparatus, comprising: a cover body, comprising a cover body bottom portion and a cover body top portion arranged opposite to the cover body bottom portion; a radiation unit, arranged between the cover body bottom portion and the cover body top portion, and configured to radiate a wireless signal; and a dielectric panel, arranged between the radiation unit and the cover body bottom portion or arranged between the radiation unit and the cover body top portion. In addition, the present disclosure also relates to an antenna system, comprising a first signal transmitting apparatus which is the signal transmitting apparatus described above, and a second signal transmitting apparatus which is arranged on the side of the cover body bottom portion away from the dielectric panel, wherein the operating frequency of the first signal transmitting apparatus is different from the operating frequency of the second signal transmitting apparatus.

Description

Signal transmitting device and antenna system

Technical field

The present disclosure relates to the field of communications, and more specifically to a signal transmitting device and an antenna system having the above signal transmitting device.

Background technique

In recent years, with the development of information and communication technologies such as the mobile Internet and the Internet of Things, data traffic has continued to grow explosively. The number of 5G base stations is increasing rapidly, and the problem of tight site resources is becoming increasingly apparent.

In order to quickly deploy 5G communication equipment, 5G sites are mainly implemented by adding 5G antennas and equipment to 4G site resources, so multi-frequency base station antennas have become mainstream. Among them, the active and passive integrated base station antennas integrating 4G and 5G have more advantages in space size, wind load, and management. They are widely accepted and used in the 5G base station deployment process and are an important factor in the future evolution of base station antennas. direction.

There are two main existing active and passive base station antenna deployment solutions: the first is to place the active antenna module and the passive antenna module up and down, for example, the active antenna module is on the top and the passive antenna module is on the bottom. . However, the disadvantage of such a deployment solution is that the size of the antenna is too long, resulting in excessive wind load. The second solution is to install part of the passive antenna module on the reflector of the active antenna module. The disadvantage of this solution is that the active antenna and the passive antenna can only work together and cannot be separated, and the passive antenna module in such an antenna will also cause greater interference to the signal transmission of the active antenna module.

Contents of the invention

In order to solve the technical problem existing in the existing technology, that is, how to reduce the interference of the passive antenna module on the signal transmission of the active antenna module while increasing the deployment flexibility of the active antenna module and the passive antenna module.

In order to solve the above technical problems, a first aspect of the present disclosure proposes a signal transmitting device. The signal transmitting device includes:

A cover body, the cover body includes a cover body bottom and a cover body top arranged opposite to the cover body bottom;

a radiating unit disposed between the cover bottom and the cover top and configured to radiate wireless signals; and

A dielectric panel is disposed between the radiating unit and the bottom of the cover or between the radiating unit and the top of the cover.

In the signal transmitting device according to the present disclosure, the dielectric panel is disposed between the radiating unit and the bottom of the cover or between the radiating unit and the top of the cover, thereby reducing the The interference of the signal transmitted by another signal transmitting device improves the radiation performance of the signal transmitting system including the signal transmitting device and another signal transmitting device.

Preferably, in one embodiment according to the present disclosure, the distance between the dielectric panel and the top of the cover is equal to the wavelength of the signal emitted by another signal emitting device used in conjunction with the signal emitting device. Associated. More preferably, in one embodiment according to the present disclosure, the distance is equal to an integer multiple of half the wavelength plus a quarter wavelength. In this way, the electromagnetic signal reflected by the signal transmitted by the other signal transmitting device from the top of the cover can be offset, thereby reducing the interference of the signal transmitting device according to the present disclosure to the signal transmitted by the other signal transmitting device. In other words, in such a manner, the influence of the signal transmitting device according to the present disclosure on the signal transmitted by another signal transmitting device used in conjunction with the present disclosure can be minimized.

Preferably, in one embodiment according to the present disclosure, the material of the media panel and the cover are the same. Preferably, in one embodiment according to the present disclosure, the signal transmitting device is configured as a passive antenna. In this way, the active antenna can be easily integrated with other antennas to achieve flexible arrangement while improving the radiation performance of the entire system.

Furthermore, a second aspect of the present disclosure provides an antenna system, the antenna system comprising:

a first signal transmitting device, wherein the first signal transmitting device is the signal transmitting device according to the first aspect of the present disclosure; and

A second signal transmitting device, the second signal transmitting device is disposed on a side of the bottom of the cover away from the dielectric panel, wherein the operating frequency of the first signal transmitting device and the second signal transmitting device The working frequency is different.

Here, since the first signal transmitting device is provided with a dielectric panel, and the dielectric panel is provided between the radiating unit and the bottom of the cover or between the radiating unit and the top of the cover , thereby being able to reduce interference to the signal transmitted by another signal transmitting device, and improve the radiation performance of the signal transmitting system including the signal transmitting device and another signal transmitting device.

Preferably, in one embodiment according to the present disclosure, the antenna system further includes a frequency selection panel configured as a frequency selection surface and disposed within the first signal transmitting device or in inside the second signal transmitting device.

Preferably, in one embodiment according to the present disclosure, the first signal transmitting device further includes a feed plate, and wherein when the frequency selection panel is disposed within the first signal transmitting device, The feed plate is constructed between the radiating unit and the frequency selective panel and feeds the radiating unit.

Preferably, in one embodiment according to the present disclosure, the frequency selective panel includes a conductive pattern, and the conductive pattern is a single-layer or multi-layer structure. More preferably, in one embodiment according to the present disclosure, the conductive pattern is configured as a slit structure. Further preferably, in an embodiment according to the present disclosure, the slot structure includes a square ring slot structure. Still further preferably, in one embodiment according to the present disclosure, the square ring gap structure is configured as an interdigitated gap structure.

Preferably, in one embodiment in accordance with the present disclosure, the frequency selection panel has a ground connection.

Preferably, in an embodiment according to the present disclosure, the first signal transmitting device and the second signal transmitting device are respectively constructed as independent structures. More preferably, in an embodiment according to the present disclosure, the operating frequency of the second signal transmitting device is higher than the operating frequency of the first signal transmitting device.

To sum up, in the signal transmitting device according to the present disclosure, the dielectric panel is disposed between the radiating unit and the bottom of the cover or between the radiating unit and the top of the cover, Therefore, interference to the signal transmitted by another signal transmitting device can be reduced, and the radiation performance of the signal transmitting system including the signal transmitting device and another signal transmitting device can be improved.

Description of the drawings

Features, advantages, and other aspects of various embodiments of the present disclosure will become more apparent with reference to the following detailed description, taken in conjunction with the accompanying drawings, several embodiments of which are shown by way of illustration and not limitation. , in the attached picture:

Figure 1A shows a schematic structural diagram of a signal transmitting device according to the present disclosure;

Figure 1B shows a schematic three-dimensional structural diagram of a signal transmitting device according to the present disclosure;

2A shows an assembly diagram of an antenna system according to one embodiment of the present disclosure;

2B shows a cross-sectional view of the antenna system of the embodiment of FIG. 2A according to the present disclosure;

3A shows a schematic structural diagram of a frequency selective surface 300A for an antenna according to one embodiment of the present disclosure;

3B shows a schematic structural diagram of a frequency selective surface 300B for an antenna according to another embodiment of the present disclosure;

3C shows a schematic structural diagram of a frequency selective surface 300C for an antenna according to yet another embodiment of the present disclosure; and

FIG. 3D shows a schematic three-dimensional structural diagram of a frequency selective surface 300C for an antenna according to the embodiment of FIG. 3C of the present disclosure.

Detailed ways

Various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Although the exemplary methods and apparatus described below include software and/or firmware executed on hardware among other components, it should be noted that these examples are only illustrative and should not be viewed as limiting. For example, consider that any or all hardware, software and firmware components may be implemented exclusively in hardware, exclusively in software, or in any combination of hardware and software. Therefore, although exemplary methods and apparatuses have been described below, those skilled in the art will readily understand that the examples provided are not intended to limit the manner in which these methods and apparatuses may be implemented.

Furthermore, the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operations of possible implementations of methods and systems according to various embodiments of the present disclosure. It should be noted that the boxes marked The functions noted may also occur out of the order noted in the figures. For example, two blocks shown one after the other may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. It should also be noted that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented using special purpose hardware-based systems that perform the specified functions or operations. , or can be implemented using a combination of specialized hardware and computer instructions.

As mentioned above, there is the following technical problem in the prior art. That is, the passive antenna module in the antenna in the prior art will also cause significant interference to the signal transmission of the active antenna module. In order to solve the technical problem existing in the existing technology, that is, how to reduce the interference of the passive antenna module on the signal transmission of the active antenna module while increasing the deployment flexibility of the active antenna module and the passive antenna module, this paper Disclosure: By adding a dielectric panel to the signal transmitting device provided on the upper layer, the electromagnetic signal reflected back by the signal transmitted by another signal transmitting device provided on the lower layer can be offset by the top of the cover, thereby reducing the signal emission according to the present disclosure. Device interference with signals transmitted by another signal transmitting device.

Specifically, FIG. 1A shows a schematic structural diagram of the signal transmitting device 100 according to the present disclosure. Correspondingly, FIG. 1B shows a schematic three-dimensional structural diagram of the signal transmitting device according to the present disclosure. As can be seen from FIGS. 1A and 1B , the signal transmitting device 100 proposed in the first aspect of the present disclosure includes a cover 110 , and the cover 110 includes a cover bottom 111 and a cover opposite to the cover bottom 111 . The cover top 112 is provided. In addition, the signal transmitting device 100 proposed by the present disclosure further includes a radiation unit 130, which is disposed between the cover bottom 111 and the cover top 112 and is configured as Radiate wireless signals. Furthermore, the signal transmitting device 100 proposed in this disclosure further includes a dielectric panel 140 , which is disposed between the radiating unit 130 and the cover bottom 111 or disposed on the radiating unit 130 and the top 112 of the cover. In the embodiment shown in FIG. 1A , the dielectric panel 140 is disposed between the radiation unit 130 and the cover bottom 111 . Those skilled in the art should understand that the dielectric panel 140 can also be disposed between the radiation unit 130 and the top 112 of the cover. Here, since the dielectric panel 140 is provided in the signal transmitting device 100, and the dielectric panel 140 is provided between the radiation unit 130 and the cover bottom 111 or between the radiation unit 130 and the cover, top of body 112, thereby reducing the interference to the signal transmitted by another signal transmitting device (will be described with reference to FIG. 2A and FIG. 2B), and improving the signal transmitting system including the signal transmitting device 100 and another signal transmitting device. Radiation performance.

Preferably, in one embodiment according to the present disclosure, the distance between the media panel 140 and the cover top 112 is consistent with another signal transmitting device used in conjunction with the signal transmitting device 100 (for example, as shown in FIG. The wavelength of the signal emitted by the signal transmitting device 200) in 2A is related. More preferably, in one embodiment according to the present disclosure, the distance is equal to an integer multiple of half the wavelength of the signal emitted by another signal transmitting device used in conjunction with the signal transmitting device 100 plus one quarter. wavelength. In this way, the electromagnetic signal reflected by the signal transmitted by the other signal transmitting device 200 from the top of the cover can be offset, thereby reducing the interference of the signal transmitting device 100 according to the present disclosure to the signal transmitted by the other signal transmitting device 200 . Preferably, in an embodiment according to the present disclosure, the material of the media panel 140 and the cover body 110 are the same. More preferably, the thickness of the media panel 140 is also the same as the thickness of the cover 110 .

In addition, it can also be seen from FIG. 1A that preferably or optionally, the signal transmitting device 100 proposed by the present disclosure also includes a frequency selection panel 120. In the embodiment shown in FIG. 1A, the frequency selection panel The panel 120 is provided in the signal transmitting device 100 . Those skilled in the art should understand that the frequency selection panel 120 can also be provided in another signal transmitting device used together with the signal transmitting device 100 proposed according to the present disclosure.

In addition, the signal transmitting device 100 proposed according to the present disclosure can also include, for example, a support bracket 150 . The support bracket 150 can, for example, function to support and fix the media panel 140 . Furthermore, the signal transmitting device 100 proposed according to the present disclosure can also include, for example, a mounting bracket 170, and the frequency selection panel 120 can be installed on the mounting bracket 170. In addition, it can also be seen in FIG. 1A that the signal transmitting device 100 proposed according to the present disclosure can also include a feed plate 160, for example, and wherein, when the frequency is selected as shown in FIG. 1A When the panel 120 is disposed in the signal transmitting device 100 , the feed plate 160 is configured between the radiating unit 130 and the frequency selection panel 120 and feeds the radiating unit 130 .

Finally, as shown in FIG. 1A , the cover 110 can also be disposed on a side away from the top 112 of the cover. Fix the buckle, such as the hook 113, so that another signal transmitting device used in conjunction with the signal transmitting device 100 can be easily fixed to the signal transmitting device 100 proposed according to the present disclosure and integrated on the signal transmitting device 100. work together. As further shown in FIG. 1B , in the direction shown in FIG. 1B , the signal transmitting device 100 proposed according to the present disclosure has a slot formed by hooks 113 on both sides on its upper part, and the Another signal transmitting device used in conjunction with the signal transmitting device 100 can be clamped with the signal transmitting device 100 proposed according to the present disclosure through the function of the card slot, thereby achieving simple fixation and integrated assembly. FIG. 2A shows an assembly diagram of an antenna system according to one embodiment of the present disclosure. It can be seen from FIG. 2A that another signal transmitting device 200 can be connected to the signal transmitting device 100 through the above-mentioned card slot. To further illustrate the operation of the antenna system in accordance with the present disclosure, Figure 2B shows a cross-sectional view of the antenna system in accordance with the embodiment of Figure 2A of the present disclosure.

As can be seen from FIG. 2B , the signal transmitting device 100 includes a cover 110 , and the cover 110 includes a cover bottom 111 and a cover top 112 opposite to the cover bottom 111 . In addition, the signal transmitting device 100 proposed by the present disclosure also includes a radiation unit 130, which is disposed between the cover bottom 111 and the cover top 112 and is configured to radiate wireless signals. Furthermore, the signal transmitting device 100 proposed in this disclosure further includes a dielectric panel 140 , which is disposed between the radiating unit 130 and the cover bottom 111 or disposed on the radiating unit 130 and the top 112 of the cover. In the embodiment shown in FIG. 2B , the dielectric panel 140 is disposed between the radiation unit 130 and the cover bottom 111 . Those skilled in the art will understand that the dielectric panel 140 may also be disposed between the radiation unit 130 and the cover top 112 . Here, since the dielectric panel 140 is provided in the signal transmitting device 100, and the dielectric panel 140 is provided between the radiation unit 130 and the cover bottom 111 or between the radiation unit 130 and the cover, between the top 112 of the body, thereby reducing interference to the signal transmitted by another signal transmitting device 200 and improving the radiation performance of the signal transmitting system including the signal transmitting device 100 and the other signal transmitting device 200 .

During specific operation, the distance between the dielectric panel 140 and the top 112 of the radome cover 110 is about (2N+1)λ/4, where λ is the operating wavelength of the second signal transmitting device 200 . When the first signal transmitting device 100 and the second signal transmitting device 200 are connected to work together, The top 112 of the radome of the first signal transmitting device 200 is far away from the second signal transmitting device 200 and has a greater impact on the electromagnetic waves radiated by the second signal transmitting device 200 . When the electromagnetic wave radiated by the second signal transmitting device 200 travels forward to the top 112 of the radome, part of the electromagnetic wave does not pass through the top 112 of the radome and is reflected to travel backward. The reflected electromagnetic waves travel backward to the dielectric panel 140 , and part of the electromagnetic waves are reflected by the dielectric panel 140 and travel forward. When the distance between the dielectric panel 140 and the top 112 of the radome is (2N+1)/4 times the operating wavelength of the second signal transmitting device 200, the second signal transmitting device is reflected by the dielectric panel 140 and moves forward. The electromagnetic waves radiated by 200 and the electromagnetic waves radiated by the second signal transmitting device 200 that are reflected by the top 112 of the radome and traveling backward have a phase difference of 180° at the top of the radome, thereby canceling each other out and improving the second signal. Radiation performance of the transmitting device 200.

In summary, the antenna system shown in FIG. 2B includes a first signal transmitting device 100, wherein the first signal transmitting device is the above-mentioned signal transmitting device 100 according to the present disclosure. In addition, the antenna system shown in FIG. 2B also includes a second signal transmitting device 200. The second signal transmitting device 200 is disposed on a side of the cover bottom 111 away from the dielectric panel 140, wherein the The operating frequency of the first signal transmitting device 100 is different from the operating frequency of the second signal transmitting device 200 .

During the assembly process, another signal transmitting device 200 can be inserted and fixed through the slot formed by the hook 113 of the signal transmitting device 100, thereby forming an integrated stacked structure without increasing the length of the antenna system, that is, Wind resistance of antenna systems formed in accordance with the present disclosure will not be increased. On the other hand, the first signal transmitting device 100 and the second signal transmitting device 200 are respectively configured as independent structures. It can be seen that according to the inventive concept according to the present disclosure, the two signal transmitting devices, namely the first signal transmitting device 100 and the second signal transmitting device 200, can work independently, that is, they do not necessarily need to be integrated to work together, but The first signal transmitting device 100 can work alone, and the second signal transmitting device 200 can also work alone. Of course, those skilled in the art should understand that when the first signal transmitting device 100 and the second signal transmitting device 200 are integrated and work together, the first signal transmitting device 100 can interfere with the signal transmitted by the second signal transmitting device 200. significantly reduced. In other words, the first signal transmitting device 100 and the second signal transmitting device 200 can either be connected together through a mounting bracket or work separately.

More preferably, the operating frequency of the second signal transmitting device 200 is higher than the operating frequency of the first signal transmitting device 100 . Illustratively, in embodiments according to the present disclosure, the first signal transmitting device 100 and the second signal transmitting device 200 are antennas operating in different operating frequency bands. For example, the first signal transmitting device 100 may be a 2G, 3G or 4G antenna, and the second signal transmitting device 200 may be a 5G antenna. Here, the first signal transmitting device 100 according to the present disclosure may be a 698-960 MHz frequency band or a 1427-2690 MHz frequency band, and the working frequency band of the second signal transmitting device 200 according to the present disclosure may be a 2496-2690 MHz frequency band or 3300- 4000MHz frequency band.

Continuing to refer to FIG. 2B , the second signal transmitting device 200 of the antenna system can further include, for example, a radio frequency remote unit, a reflecting plate and a radome. Wherein, the reflecting plate is fixed above the radio frequency remote unit through fasteners, the radiating unit of the second signal transmitting device 200 can be arranged above the reflecting plate, and the radome of the second signal transmitting device 200 is fixed on the radio frequency remote unit through screws. above, and cover the radiation unit and reflection plate of the second signal transmitting device 200 below it. Therefore, the second signal transmitting device 200 can be used as an active antenna module, such as a 5G antenna module. Continuing to refer to FIG. 2B , the antenna system can also include a dome bottom 111 of another radome, a frequency selection panel 120 , a dielectric panel 140 and a dome top 112 of another radome. The frequency selection panel 120 is fixed above the bottom 111 of another radome through the mounting bracket 170. The first signal transmitting device 100 also includes a radiating unit 130 and a feed plate 160. The upper end of the feed plate 160 is electrically connected to the radiating unit 130. electrically connected to feed the radiating unit 130. The media panel 140 is fixed on the installation bracket 170 through the panel support bracket 150 . The radiation unit 130 can be located above or below the media panel 140 . The distance between the dielectric panel 140 and the top 112 of the radome is, for example, about 0.25λ in the example shown in FIG. 2B , where λ is the operating wavelength of the second signal transmitting device 200 . The frequency selection panel 120 is a frequency selection surface panel that forms an open circuit to the second signal transmitting device 200 and a ground structure to the first signal transmitting device 100, so that the above first signal transmitting device 100 can be used as a passive antenna module. .

Continuing to refer to Figure 2B, for example, if an existing base station is equipped with a passive antenna module, when an active antenna module needs to be added, the active antenna module and the passive antenna module are fixed together through the mounting bracket, that is, can work together, this assembly method and working method are simple Simple and easy. Using the above method, the communication frequency band of the base station can be broadened and the communication effect of the base station can be improved without large-scale modification and expansion of the existing base station. At the same time, the active antenna module and the passive antenna module can work independently, which improves the modularity of the antenna, improves the flexibility of using the base station antenna, and saves the construction cost of the base station antenna.

The specific structure of the frequency selection surface according to the present disclosure will be introduced below with the help of FIGS. 3A to 3D , wherein FIG. 3A shows a frequency selection surface 300A for an antenna according to one embodiment of the present disclosure. Structural schematic diagram, FIG. 3B shows a schematic structural diagram of a frequency selection surface 300B for an antenna according to another embodiment of the present disclosure, and FIG. 3C shows a frequency selection surface 300B for an antenna according to another embodiment of the present disclosure. A schematic structural diagram of the selection surface 300C, and FIG. 3D shows a schematic three-dimensional structural diagram of the frequency selection surface 300C for an antenna according to the embodiment of FIG. 3C of the present disclosure.

Specifically, the frequency selection panel can be, for example, a frequency selection surface (Frequency Selective Surface: FSS) panel. Here, the FSS panel is a planar structure composed of a single or multi-layer periodically arranged conductive pattern. It has frequency selective characteristics for electromagnetic waves with different operating frequencies, polarization states and incident angles. It can be divided into Types include high-pass frequency selection surface, low-pass frequency selection surface, band-pass frequency selection surface and band-stop frequency selection surface. The present disclosure adopts a single-layer bandpass frequency selective surface, including a dielectric substrate 301 and a conductive pattern 302 located on the dielectric substrate. Here, the conductive pattern mainly consists of a patch metal part and a gap part. Preferably, the patch metal part may include multiple metal sheets, and there may be a gap part between the multiple metal sheets. In addition, a gap portion can also be formed between the metal sheet and the frame. The conductive pattern of a general bandpass conductive pattern is a gap structure, as shown in Figure 3A. Among them, the gap can be a "one-word" gap, a "cross" gap, a circular ring gap, a square ring gap or other gap structures. In order to increase the passband bandwidth, a single ring gap can be changed into N2 ring gaps, as shown in Figure 3B, and a single square ring gap can be changed into four square ring gaps. In order to reduce the volume of the frequency selection surface, the square ring gap structure can be further changed to an interdigitated gap structure, as shown in Figure 3C. The present disclosure is a bandpass frequency selective surface using the interdigitated gap structure, covering a 20mil FR4 dielectric substrate with copper foil, and its 3D view is shown in Figure 3D. The frequency selective surface structure used in the present invention has the advantages of small size, wide operating bandwidth, high angle stability, and insensitivity to the polarization of the incident signal.

The frequency selection panel 120 is a single-layer or multi-layer high-pass or band-pass frequency selection surface, It includes one or more layers of dielectric substrate and a single or multi-layer conductive pattern located on the dielectric substrate. The frequency selection panel 120 is a passband within the working frequency band of the second signal transmitting device 200 and does not have any impact on the radiation signal of the second signal transmitting device 200, and can be equivalent to a layer of air. The frequency selection panel 120 is a stop band within the operating frequency band of the first signal transmitting device 100, and has a reflectivity of close to 100% for signals radiated by the first signal transmitting device 100, which can be equivalent to a continuous metal surface. Therefore, the influence of the first signal transmitting device 100 on the second signal transmitting device 200 can be effectively reduced, and at the same time, the first signal transmitting device 100 does not need to rely on the ground shared with the second signal transmitting device 200 to transmit the first signal. The device 100 and the second signal transmitting device 200 can either be integrated together or work separately. While ensuring the miniaturization of the antenna, it also improves the flexibility of using the antenna.

Through experimental simulation of the frequency response curve of the structure of the frequency selective surface according to the present disclosure, it can be known that under optimal circumstances, within the operating frequency band of the second signal transmitting device (for example, 3400MHz to 3800MHz), the transmittance is as high as -0.09dB~- 0.12dB; and when the reflectivity is greater than 20dB, the relative operating bandwidth is 11.1%; when the reflectivity is greater than 15dB, the relative operating bandwidth is as high as 23.9%. Within the operating frequency band of the first signal transmitting device (for example, 698-960MHz), the reflectivity is as high as -0.34dB～-0.67dB. In addition, it can be seen through experimental simulations that the transverse electric mode (ie TE mode, the transverse electric mode does not have an electric field component in the propagation direction of the wave, but there is a magnetic field component) of the structure of the frequency-selective surface according to the present disclosure under different incident angles It has different frequency response curves. When the TE mode is illuminated at 0°, 30° and 60°, its center frequency point is slightly shifted to high frequency. When the illumination angle is 60°, the transmittance of the TE mode in the working frequency band of the second signal transmitting device is -0.05dB ~ -0.18dB, which still meets the design and use requirements. In addition, through the frequency response curves of the TM mode of the frequency-selective surface structure according to the present disclosure of the experimental module at different incident angles, it can be seen that when the transverse magnetic mode (i.e., TM mode) does not have a magnetic field in the propagation direction of the wave, component, but there is an electric field component), its passband bandwidth becomes wider when irradiated at 0°, 30° and 60°. When the illumination angle is 60°, the reflectivity of the TM mode within the working frequency band of the first signal transmitting device is -0.91dB ~ -1.65dB, which still meets the usage requirements. It can be seen that the structure of the frequency selective surface adopted according to the present disclosure has a wide operating frequency band, is insensitive to the polarization of the incident signal, and can adapt to large angle incidence (the incident angle can vary within the range of 0° to 60°). The center frequency point almost does not shift as the incident angle changes. Although as the incident angle increases, the transmittance of the passband and the reflection of the stopband The emissivity is slightly lower, but still high, meeting the requirements of engineering applications.

Generally speaking, the frequency selective panel includes a conductive pattern, and the conductive pattern is a single-layer or multi-layer structure. More preferably, in one embodiment according to the present disclosure, the conductive pattern is configured as a slit structure. Further preferably, in an embodiment according to the present disclosure, the slot structure includes a square ring slot structure. Still further preferably, in one embodiment according to the present disclosure, the square ring gap structure is configured as an interdigitated gap structure. Preferably, in one embodiment in accordance with the present disclosure, the frequency selection panel has a ground connection.

The above are only optional embodiments of the present disclosure and are not intended to limit the embodiments of the present disclosure. For those skilled in the art, various modifications and changes may be made to the embodiments of the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the protection scope of the embodiments of the present disclosure.

While embodiments of the present disclosure have been described with reference to a number of specific embodiments, it is to be understood that embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

A signal transmitting device, characterized in that the signal transmitting device includes:

A cover body, the cover body includes a cover body bottom and a cover body top arranged opposite to the cover body bottom;

a radiating unit disposed between the cover bottom and the cover top and configured to radiate wireless signals; and

A dielectric panel is disposed between the radiating unit and the bottom of the cover or between the radiating unit and the top of the cover.
The signal transmitting device according to claim 1, characterized in that the distance between the dielectric panel and the top of the cover is equal to the wavelength of the signal emitted by another signal transmitting device used in conjunction with the signal transmitting device. Associated.
The signal transmitting device according to claim 2, wherein the distance is equal to an integer multiple of half the wavelength plus a quarter wavelength.
The signal transmitting device according to claim 1, wherein the material of the dielectric panel and the cover are the same.
An antenna system, characterized in that the antenna system includes:

A first signal transmitting device, wherein the first signal transmitting device is the signal transmitting device according to any one of claims 1 to 4; and

A second signal transmitting device, the second signal transmitting device is disposed on a side of the bottom of the cover away from the dielectric panel, wherein the operating frequency of the first signal transmitting device and the second signal transmitting device The working frequency is different.
The antenna system according to claim 5, characterized in that the antenna system further includes:

A frequency selection panel configured as a frequency selection surface and arranged within the first signal transmitting device or within the second signal transmitting device.
The antenna system according to claim 6, wherein the first signal transmitting device further includes a feed plate, and wherein when the frequency selection panel is disposed in the first signal transmitting device, the The feed plate is constructed between the radiating unit and the frequency selective panel and feeds the radiating unit.
The antenna system according to claim 6, wherein the frequency selective panel includes a conductive pattern, and the conductive pattern is a single-layer or multi-layer structure.
The antenna system of claim 8, wherein the conductive pattern is configured as a slot structure.
The antenna system according to claim 9, wherein the slot structure includes a square ring slot structure.
The antenna system according to claim 10, wherein the square ring slot structure is configured as an interdigitated slot structure.
6. The antenna system of claim 6, wherein the frequency selective panel has a ground connection.
The antenna system according to claim 5, wherein the first signal transmitting device and the second signal transmitting device are respectively configured as independent structures.
The antenna system according to claim 5, wherein the operating frequency of the second signal transmitting device is higher than the operating frequency of the first signal transmitting device.