CN212485554U - Terahertz antenna suitable for 6G communication frequency band - Google Patents
Terahertz antenna suitable for 6G communication frequency band Download PDFInfo
- Publication number
- CN212485554U CN212485554U CN202021215105.6U CN202021215105U CN212485554U CN 212485554 U CN212485554 U CN 212485554U CN 202021215105 U CN202021215105 U CN 202021215105U CN 212485554 U CN212485554 U CN 212485554U
- Authority
- CN
- China
- Prior art keywords
- patch
- antenna
- sector
- terahertz
- frequency band
- 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
Abstract
The utility model discloses a terahertz antenna suitable for 6G communication frequency channel belongs to the terahertz antenna field. The main body part of the antenna is an insulating medium layer, a butterfly-like radiation patch and a circular patch combined with the butterfly-like radiation patch are arranged in the center of the upper surface of the medium layer, the butterfly-like radiation patch and the circular patch are fed jointly, the circular patch is combined in the radiation patch, the ultra-wideband effect is achieved, semicircular grooves are symmetrically formed in the left end and the right end of the radiation patch towards the farthest end of the center of the radiation patch respectively, 2 groups of 4 rectangular grooves with the same width are formed in the left end and the right end of the radiation patch towards the center of the radiation patch, and finally a longer vertical rectangular groove is formed in the center symmetrical position of the butterfly-like radiation patch. The antenna can achieve the effect of an ultra wide band, the designed frequency band is located and meets the requirement of terahertz frequency, ultra wide band work can be achieved, the antenna can be widely applied to terahertz 6G communication frequency bands, and the antenna has the advantages of being simple in structure, reasonable in design, small in size and easy to manufacture.
Description
Technical Field
The utility model belongs to terahertz antenna field, specifically speaking relates to a terahertz antenna suitable for 6G communication frequency channel.
Background
Terahertz (THz) waves in a THz antenna generally refer to electromagnetic waves with a frequency of 0.1-10 THz. Terahertz is a new radiation source with many unique advantages, and its energy is very small, and it will not produce destruction to the matter, so it has more advantages than X-ray technique. In addition, the vibration and rotational resonance frequencies of many biological macromolecules are also in the terahertz band. Therefore, the development of terahertz wave technology will bring far-reaching influence on the technical development in various fields such as broadband communication, radar detection, electronic countermeasure, electromagnetic weapons, astronomy, unmarked gene inspection, cell imaging, nondestructive inspection, biochemical inspection, grain seed selection, strain optimization and the like.
Today, 5G is already in commercial use and 6G starts the layout as well. The global operators and the equipment suppliers develop directional research on 6G and deeply analyze potential technologies such as terahertz communication technology and the like. Terahertz communication will be a novel spectrum resource technology of 6G. Theoretically, in the field of communications, the higher the frequency, the greater the communication capacity. In the electromagnetic wave spectrum, the wavelength of the terahertz wave is 3-1000 mu m, the frequency is 0.1-10 THz, and the terahertz wave can provide a wireless transmission rate of more than 10 Gbit/s. Terahertz waves are electromagnetic waves with wavelengths between microwaves and infrared rays, which endow the terahertz waves with the advantages of microwave communication and light wave communication to a certain extent, namely high transmission rate, large capacity, strong directivity, high safety, strong penetrability and the like.
In the case of antennas, reducing their size has become part of the research on communication devices. However, blindly reducing the size of the antenna can affect its index characteristics such as standing waves, gain, bandwidth, etc. The microstrip antenna has been widely researched and applied due to the advantages of light weight, small volume, low profile, easy conformality, low cost and the like, the bandwidth of the microstrip antenna is relatively narrow under the general condition, and the bandwidth of the common low-frequency microstrip patch antenna is only about 20 MHz-30 MHz. This makes the microstrip antenna too limited to exhibit its desired effect in use.
At present, researches at home and abroad find that the bandwidth of the microstrip antenna can be effectively widened by adding a parasitic patch, slotting and punching technologies, adopting an LC resonance circuit, loading a short-circuit probe and adding an impedance matching network, and meanwhile, the bandwidth of the microstrip antenna can also be effectively widened by selecting a proper magnetic conductivity medium substrate and a corresponding dielectric constant to change different sizes and shapes or adopting a corresponding feeding method and a proper impedance matching. However, the above method for increasing the bandwidth affects the gain of the antenna, and cannot achieve both the bandwidth and the gain.
Disclosure of Invention
To the above-mentioned problem that prior art exists, the utility model aims to provide a symmetry type multislot terahertz antenna, this antenna have a kind butterfly characteristics and many places fluting make near the bandwidth of central frequency obtain expanding, and the gain has obvious improvement simultaneously, and covers the frequency extensively, can effectively be applied to terahertz 6G communication frequency channel.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a terahertz antenna suitable for a 6G communication frequency band comprises a dielectric substrate, wherein a radiation patch is arranged on the upper surface of the dielectric substrate, lumped port excitation is arranged on the side surface of the dielectric substrate, the radiation patch comprises a circular patch, a patch wing and a microstrip transmission line, the circular patch is arranged in the center of the dielectric substrate, the patch wing comprises two sectors and is symmetrically arranged on two sides of the circular patch respectively, two ends of the microstrip transmission line are connected with the circular patch and the lumped port excitation respectively, a central rectangular groove is arranged on a symmetrical line of the circular patch and the microstrip transmission line, an opening is arranged at one end, located on the circular patch, of the central rectangular groove, and an opening is also arranged at the other end, located on the microstrip transmission line, of the central rectangular groove; each sector of the patch wing is provided with two sector rectangular grooves, the front ends of the sectors of the sector rectangular grooves are provided with openings, the sector rectangular grooves on the same patch wing are symmetrical about the symmetry line of the patch wing, and the sector rectangular grooves on the two patch wings are symmetrical about the central rectangular groove; the most front end of the sector of the patch wing is provided with a semicircular groove, the semicircular grooves respectively positioned on the two patch wings are symmetrical about the central rectangular groove, and the two sector rectangular grooves positioned on the same patch wing are positioned on two sides of the semicircular groove and have zero distance with the semicircular groove.
Furthermore, the sector-shaped symmetry line of the patch wing is perpendicular to the central rectangular groove.
Furthermore, the sector rectangular groove is arranged along the direction perpendicular to the microstrip transmission line, and the bottom edges of the sector rectangular grooves on the same patch wing are positioned on the same straight line.
Furthermore, the dielectric substrate is a cube with the length of 0.8mm, the width of 0.8mm and the height of 0.1mm, and the material of the dielectric substrate is silicon with the relative dielectric coefficient of 11.9.
Further, the radius of the circular patch is 0.16 mm.
Further, the radius of the semicircular groove is 0.04 mm.
Further, the width of the sector rectangular groove is 0.02 mm.
Further, the length of the central rectangular groove is 0.56mm, and the width of the central rectangular groove is 0.01 mm.
Compared with the prior art, the utility model discloses carry out corresponding expansion on butterfly-shaped basis, combine together with the circular paster that the size is suitable again after constituting basic butterfly-shaped structure, again in the left and right sides both ends of radiation paster to the most distal end of radiation paster central point put respectively the symmetry open semicircular groove, open the first rectangular channel of width unanimity, the second rectangular channel is totally 2 groups of 4 rectangular channels to the radiation paster central point at the left and right sides both ends of radiation paster simultaneously; finally, a longer vertical rectangular groove is formed in the central symmetrical position of the radiation patch; simulation shows that the distribution of surface current in the radiation patch can be effectively improved, the radiation intensity can be enhanced, the radiation patch is more concentrated on two patch wings of the radiation patch, the bandwidth of the radiation patch is effectively expanded in a certain range, and meanwhile, the gain is improved. The utility model discloses a terahertz antenna adopts the structure of above design to realize the effect of ultra wide band and good gain, and the frequency channel of design can cover terahertz field now, has realized the ultra wide band work simultaneously, has simple structure, reasonable in design, miniaturized advantage of easily making, is fit for popularizing and applying in a great deal of fields such as communication, radar, medical treatment.
Drawings
Fig. 1 is a schematic perspective view of a terahertz antenna according to the present invention;
fig. 2 is a schematic front view of the terahertz antenna of the present invention;
in the figure: 1. a dielectric substrate; 2. a radiation patch; 3. circular patch; 4. a central rectangular slot; 5. a semicircular groove; 601. a first rectangular groove; 602. a second rectangular groove; 7. lumped port excitation;
FIG. 3 is a return loss simulation of the antenna;
FIG. 4 is a simulated voltage standing wave ratio diagram of the antenna;
FIG. 5 is a graph of gain versus frequency for an antenna;
FIG. 6 is a surface current intensity distribution diagram of antenna 241.22 GHz;
FIG. 7 is an E-plane and H-plane pattern for antenna 241.22 GHz;
FIG. 8 is a 3D gain pattern for antenna 241.22 GHz;
FIG. 9 is the E-plane and H-plane patterns of antenna 230 GHz;
FIG. 10 is a 3D gain pattern for antenna 230 GHz;
FIG. 11 is the E-plane and H-plane patterns of the antenna 250 GHz;
FIG. 12 is a 3D gain pattern for antenna 250 GHz;
FIG. 13 is the E-plane and H-plane patterns of the antenna 260 GHz;
fig. 14 is a 3D gain pattern for antenna 260 GHz.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
As shown in fig. 1 and 2, the terahertz antenna suitable for the 6G communication frequency band includes a dielectric substrate 1, the dielectric substrate 1 is a cubic insulating dielectric layer, a radiation patch 2 is disposed on the upper surface of the dielectric substrate 1, a Lumped Port excitation 7(Lumped Port) is disposed on the side surface of the dielectric substrate 1, the radiation patch 2 is used as a feed, and the Lumped Port 7 is used for excitation, so that excellent performance impedance matching can be obtained, and a significant gain effect is achieved while an ultra-wideband is ensured. The shape of the radiation patch 2 is based on a butterfly-like structure and comprises a circular patch 3, patch wings and a microstrip transmission line, wherein the circular patch 3 is arranged in the center of the dielectric substrate 1, the patch wings comprise two fan shapes which are respectively and symmetrically arranged on two sides of the circular patch 3, and the symmetrical line of the fan shapes is vertical to the central rectangular groove 4. The two ends of the microstrip transmission line are respectively connected with the circular patch 3 and the integrated port excitation 7, a central rectangular groove 4 is arranged at the symmetrical line of the circular patch 3 and the microstrip transmission line (namely the symmetrical line of the radiation patch 2), an opening is arranged at one end of the central rectangular groove 4, which is positioned at the circular patch 3, and an opening is also arranged at the other end of the microstrip transmission line; each sector of the patch wing is provided with two sector rectangular grooves with the same width, the sector rectangular grooves are arranged along the direction vertical to the microstrip transmission line, the bottom edges of the sector rectangular grooves on the same patch wing are positioned on the same straight line, the front ends of the sectors of all the sector rectangular grooves are provided with openings, the sector rectangular grooves on the same patch wing are symmetrical about the symmetrical line of the patch wing, and the sector rectangular grooves on the two patch wings are symmetrical about a central rectangular groove 4; the most front end of the sector of the patch wing (namely the most far end of the patch wing from the central position of the medium substrate 1) is provided with a semicircular groove 5, and the semicircular grooves 5 respectively positioned on the two patch wings are symmetrical about a central rectangular groove 4.
Examples
In this embodiment, a PCB is used as a dielectric substrate, and then an SMA connector is soldered. The dielectric substrate 1 is a cube with a length of 0.8mm, a width of 0.8mm and a height of 0.1mm, and the material of the dielectric substrate 1 is silicon with a relative dielectric coefficient of 11.9. The radiating patch 2 is made of copper, the radius of the circular patch 3 is 0.16mm, the widest part (perpendicular to the microstrip transmission line) of the radiating patch 2 is 0.745mm, and the longest part (parallel to the microstrip transmission line) is 0.56 mm.
The sector rectangular grooves on the same patch wing are respectively a first rectangular groove 601 and a second rectangular groove 602, and the widths of the first rectangular groove and the second rectangular groove are both 0.02 mm. The radius of semicircular groove 5 is 0.04mm, and two sector rectangular channels that lie in on same paster wing lie in the both sides of semicircular groove 5, hug closely semicircular groove 5 and set up, and the distance with semicircular groove 5 promptly is zero.
The central rectangular slot 4 has a length of 0.56mm and a width of 0.01 mm.
The working principle is as follows: the main body part of the symmetrical multi-groove terahertz 6G communication application frequency band antenna is an insulating medium layer far smaller than the working wavelength, a butterfly-shaped radiation patch and a circular patch combined with the butterfly-shaped radiation patch are arranged in the center of the upper surface of the medium layer, the butterfly-shaped radiation patch and the circular patch are fed jointly, the circular patch is combined in the radiation patch, the ultra-wideband effect is achieved, semicircular grooves are symmetrically formed in the positions, facing the center of the radiation patch, of the left end and the right end of the radiation patch, the farthest ends of the radiation patch are respectively provided with 2 groups of 4 rectangular grooves with the same width, and finally a longer vertical rectangular groove is formed in the position, facing the center of the butterfly-shaped radiation patch, the current distribution on the surface of the radiation patch can be obviously changed, the radiation intensity and the gain are improved, the return loss of.
In the terahertz antenna, the obtained effect is reasonable and has good practicability, the return loss and the directivity have good effects, and S is the frequency band with the advantages of reasonable structure, good matching performance and low cost11<And when the power is minus 10dB, each frequency point can realize a good return loss effect, namely an ultra wide band effect is realized, the field of terahertz 6G communication is generally covered by 220 GHz-267 GHz, and the practicability is high.
By performing HFSS simulation on the designed butterfly-like structure, various performance indexes of the terahertz antenna of the embodiment are tested by using simulation software, and the corresponding return loss, current distribution, directional diagram and 3D gain diagram of the antenna are obtained in the final result (see fig. 3-14).
As shown in fig. 3, the return loss and the voltage standing wave ratio of the antenna are corresponding, in general, the return loss is-10 dB corresponding to a Voltage Standing Wave Ratio (VSWR) of 2, the voltage standing wave ratio is less than 2, and the return loss is correspondingly lower than-10 dB. The return loss of the antenna is lower than-10 dB, namely the frequency band suitable for the antenna to work. And meanwhile, the lowest point of the antenna is lower than-20 dB, which shows that the antenna has the best performance in the working frequency band. The center frequency is already lower than-40 dB, which shows that the antenna works well at the frequency point, and the voltage standing wave ratio simulation diagram of the antenna is shown in figure 4.
As shown in fig. 5, the gain of the antenna changes with the frequency, the terahertz antenna obtains the maximum gain of 5.9749dB at about 219GHz, which completely meets the design accuracy requirement of the antenna and simultaneously meets the ultra-wideband characteristic; as shown in fig. 6, the surface current distribution of the antenna radiation patch, after the butterfly patch is slotted, the current radiation intensity is mainly concentrated at the left and right ends of the antenna and the rectangular slot, the current distribution is obviously improved, the current intensity is obviously improved, and the radiation intensity is improved at the same time; as shown in fig. 7 and 8, the return loss frequency is 241.2GHz, and the gain is maximum at 5.7625dB at 37 ° for the main radiation; the radiation effect is good. As shown in fig. 9 and 10, the gain is maximum at 3.7447dB for a return loss frequency of 230GHz and main radiation of-42 °; as shown in fig. 11 and 12, the gain is maximum at 6.8514dB for a return loss frequency of 250GHz and main radiation of-16 °; as shown in fig. 13 and 14, when the return loss frequency is 260GHz and the main radiation is-6 °, the gain is maximum, 6.7309dB, the 3D gain pattern of the four central frequency points can intuitively show that the radiation intensity of the antenna is significantly enhanced, the radiation range can realize fixed-point directional radiation, the coverage range is wide, the main radiation area is-42 ° -37 ° of the antenna, and the antenna size has the characteristic of miniaturization, so the antenna is very reasonable and practical in design, and the antenna is designed in S11<The terahertz wave antenna has the advantages that the echo loss effect is good at each frequency point, the working performance is good, the corresponding gain and radiation directivity are good, the performance is good at the terahertz 6G communication frequency band, the practicability is high, the structure is simple, the design is reasonable, and the miniaturization design is easy.
Experiments show that the semicircular groove and the rectangular groove with consistent broadband are formed to increase the broadbandAnd the effect of improving the antenna gain is obvious. At S11When equal to-10 dB, fL＝220.15GHz，fH266.54GHz at fLAnd fHM, S11<-10dB, absolute bandwidth of antenna B ═ fH-fL46.39GHz, relative bandwidth Br 58%, the bandwidth has obtained showing the increase, and has taken up more than half of operating frequency band, has realized the effect of ultra wide band, can both realize terahertz antenna's effect in the broadband, has simultaneously extensively covered terahertz frequency band structure, and its range of application covers many fields such as communication, radar, medical treatment, especially satisfies the frequency channel requirement of terahertz 6G communication.
Claims (8)
1. The terahertz antenna applicable to the 6G communication frequency band comprises a dielectric substrate (1), wherein a radiation patch (2) is arranged on the upper surface of the dielectric substrate (1), and lumped port excitation (7) is arranged on the side surface of the dielectric substrate (1), and is characterized in that the radiation patch (2) comprises a circular patch (3), patch wings and a microstrip transmission line, the circular patch (3) is arranged in the center of the dielectric substrate (1), the patch wings comprise two fan-shaped surfaces and are symmetrically arranged on two sides of the circular patch (3), two ends of the microstrip transmission line are respectively connected with the circular patch (3) and the lumped port excitation (7), a central rectangular groove (4) is arranged at the symmetrical line of the circular patch (3) and the microstrip transmission line, an opening is arranged at one end, located on the circular patch (3), of the central rectangular groove (4), the other end of the microstrip transmission line is also provided with an opening; each sector of the patch wing is provided with two sector rectangular grooves, the front ends of the sectors of the sector rectangular grooves are provided with openings, the sector rectangular grooves on the same patch wing are symmetrical about the symmetry line of the patch wing, and the sector rectangular grooves on the two patch wings are symmetrical about the central rectangular groove (4); the most front end of the sector of the patch wing is provided with a semicircular groove (5), the semicircular grooves (5) which are respectively positioned on the two patch wings are symmetrical about a central rectangular groove (4), and the two sector rectangular grooves which are positioned on the same patch wing are positioned on two sides of the semicircular groove (5) and have zero distance with the semicircular groove (5).
2. Terahertz antenna suitable for a 6G communication frequency band according to claim 1, wherein the sector-shaped symmetry line of the patch wing is perpendicular to the central rectangular slot (4).
3. The terahertz antenna applicable to the 6G communication frequency band according to claim 1, wherein the sector rectangular grooves are arranged along a direction perpendicular to the microstrip transmission line, and the bottom edges of the sector rectangular grooves on the same patch wing are located on the same straight line.
4. The terahertz antenna applicable to the 6G communication frequency band is characterized in that the dielectric substrate (1) is in a cube shape with a length of 0.8mm, a width of 0.8mm and a height of 0.1mm, and the material of the dielectric substrate (1) is silicon with a relative dielectric coefficient of 11.9.
5. Terahertz antenna suitable for a 6G communication frequency band according to claim 1, wherein the circular patch (3) has a radius of 0.16 mm.
6. Terahertz antenna suitable for a 6G communication frequency band according to claim 1, wherein the semi-circular groove (5) has a radius of 0.04 mm.
7. The terahertz antenna applicable to the 6G communication frequency band is characterized in that the width of the sector rectangular groove is 0.02 mm.
8. Terahertz antenna suitable for a 6G communication frequency band according to claim 1, wherein the central rectangular slot (4) has a length of 0.56mm and a width of 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021215105.6U CN212485554U (en) | 2020-06-28 | 2020-06-28 | Terahertz antenna suitable for 6G communication frequency band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021215105.6U CN212485554U (en) | 2020-06-28 | 2020-06-28 | Terahertz antenna suitable for 6G communication frequency band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212485554U true CN212485554U (en) | 2021-02-05 |
Family
ID=74413824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021215105.6U Active CN212485554U (en) | 2020-06-28 | 2020-06-28 | Terahertz antenna suitable for 6G communication frequency band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212485554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969307A (en) * | 2020-06-28 | 2020-11-20 | 南京林业大学 | Symmetrical multi-groove terahertz 6G communication application frequency band antenna |
| CN113113768A (en) * | 2021-03-22 | 2021-07-13 | 南京林业大学 | Symmetric multi-slot terahertz 6G communication application frequency band antenna based on butterfly-like structure |
-
2020
- 2020-06-28 CN CN202021215105.6U patent/CN212485554U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969307A (en) * | 2020-06-28 | 2020-11-20 | 南京林业大学 | Symmetrical multi-groove terahertz 6G communication application frequency band antenna |
| CN111969307B (en) * | 2020-06-28 | 2023-08-15 | 南京林业大学 | Symmetrical multi-slot terahertz 6G communication application frequency band antenna |
| CN113113768A (en) * | 2021-03-22 | 2021-07-13 | 南京林业大学 | Symmetric multi-slot terahertz 6G communication application frequency band antenna based on butterfly-like structure |
| CN113113768B (en) * | 2021-03-22 | 2022-07-01 | 南京林业大学 | Symmetric multi-slot terahertz 6G communication application frequency band antenna based on butterfly-like structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rekha et al. | Dual band notched orthogonal 4-element MIMO antenna with isolation for UWB applications | |
| Islam et al. | Compact EBG structure for alleviating mutual coupling between patch antenna array elements | |
| CN111969307B (en) | Symmetrical multi-slot terahertz 6G communication application frequency band antenna | |
| Megahed et al. | Sub-6 GHz highly isolated wideband MIMO antenna arrays | |
| Singh et al. | A compact and wide band microstrip patch antenna for X-band applications | |
| CN212485554U (en) | Terahertz antenna suitable for 6G communication frequency band | |
| Deepak et al. | Design and analysis of hetero triangle linked hybrid web fractal antenna for wide band applications | |
| Mukta et al. | Design of a compact circular microstrip patch antenna for WLAN applications | |
| CN101777691A (en) | Slot printing monopole ultra-wideband antenna | |
| CN108461912B (en) | Terahertz microstrip antenna | |
| CN108429010B (en) | Ultra-wideband double-end-fire antenna based on modulation super-surface | |
| Jiang et al. | Design of a wideband quasi-Yagi microstrip antenna with bowtie active elements | |
| CN212182535U (en) | Novel butterfly-shaped slotted broadband terahertz antenna | |
| Liu et al. | A SIW-Based vivaldi array antenna for 5G wireless communication systems | |
| CN210129580U (en) | Novel multi-frequency broadband microstrip antenna | |
| CN111446538A (en) | Novel butterfly-shaped slotted broadband terahertz antenna | |
| Dwivedi et al. | UWB-MIMO DGS loaded patch antenna with low profile for millimeter-wave applications | |
| Madhav et al. | Linearly polarized microstrip planar filtenna for X and Ku band communication systems | |
| CN110556628A (en) | Novel multi-frequency broadband microstrip antenna | |
| Wei et al. | Design of L-Shaped Open-Slot Antenna Used in UAV Airborne Communication System | |
| Shelar et al. | Microstrip patch antenna with partial ground plane and parasitic patch for K band application in 5G | |
| Bhavani et al. | Low Profile Textile Flower Shaped Antenna for Ultra Wideband Applications | |
| CN113113768B (en) | Symmetric multi-slot terahertz 6G communication application frequency band antenna based on butterfly-like structure | |
| Yu et al. | Band-notched UWB printed log-periodic dipole antenna fed by half mode substrate integrated waveguide | |
| Mehdipour et al. | A new planar ultra wideband antenna for UWB applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221115 Address after: 13/F, Building B, Xingzhi Science Park, No. 6-3, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu Province, 210046 Patentee after: NANJING WESTERN BRIDGE TECH. Co.,Ltd. Address before: Longpan road Xuanwu District of Nanjing city of Jiangsu Province, No. 159 210037 Patentee before: NANJING FORESTRY University |