CN217363062U - Single feeder line double MIMO 5G frequency shift system - Google Patents
Single feeder line double MIMO 5G frequency shift system Download PDFInfo
- Publication number
- CN217363062U CN217363062U CN202220131777.1U CN202220131777U CN217363062U CN 217363062 U CN217363062 U CN 217363062U CN 202220131777 U CN202220131777 U CN 202220131777U CN 217363062 U CN217363062 U CN 217363062U
- Authority
- CN
- China
- Prior art keywords
- frequency shift
- frequency
- path
- output
- feeder
- 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.)
- Withdrawn - After Issue
Links
- 230000009977 dual effect Effects 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000008447 perception Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Transmitters (AREA)
Abstract
The utility model provides a single feeder walks 5G frequency shift system of two MIMO, include: the system comprises a 5G single-path frequency shift near-end machine, at least one over-current coupler, at least one power divider and at least one 5G single-path frequency shift far-end machine; the two input ends of the 5G single-path frequency shift near-end machine are respectively connected with the two output ends of the 5G NR information source through radio frequency feeders, the output end of the 5G single-path frequency shift near-end machine is connected with the input end of the power divider through a radio frequency feeder, and the output end of the power divider is connected with the input end of the first overcurrent coupler; and a first output end of the first overcurrent coupler is connected with an input end of the first 5G single-path frequency shift remote terminal through a radio frequency feeder. The utility model provides a single feeder walks 5G shift frequency technique of two MIMO realizes that single feeder walks 2X 2MIMO signal, reduces 5G high frequency transmission loss simultaneously, brings the resource saving. A single antenna feeder deployed in the existing network is reused, 2 x 2MIMO is supported, the network rate and the user perception are improved, and an operator is helped to improve the competitiveness.
Description
Technical Field
The utility model relates to a 5G communication equipment field, concretely relates to single feeder walks 5G frequency shift system of two MIMO.
Background
With the large-scale construction of 5G, the high-frequency band propagation loss of the 5G network is large. The existing network original antenna feeder supports 2.7G at most and cannot meet the requirements of 3.5G and above of a 5G network. The existing network cannot meet the requirement of 5G network MIMO (multiple input multiple output) by using the original single antenna feeder.
The traditional antenna feeder supports 2.7G at the highest, and in the 5G era, 5G is generally high in frequency and is not available. The line loss is too large at 3.5G high frequency by using a traditional cable and a traditional transmission mode, so that the power resource of equipment is wasted, and high energy consumption is caused.
A traditional room is divided into a single feeder line to output a same-frequency signal, a single cable 2 x 2MIMO cannot be realized, 2 cables must be laid for realizing MIMO, as shown in figure 1, the staggered arrangement needs to lay 2 sets of antenna feeders, the interval between two sets of antenna feeders is 1 meter, the arrangement is not easy, the construction is difficult, the property coordination is difficult, and the cable cost is extremely high under the background that the international copper price is continuously increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the original single set of antenna feeder of present net and can't satisfy 5G network MIMO (multiple input multiple output) demand, with traditional cable and traditional transmission mode line loss too big at 3.5G high frequency to extravagant equipment power resource leads to high energy consumption, difficult deployment, and the construction is difficult, technical problem that the cable cost is high, the utility model discloses a realize through following technical scheme.
A single-feeder dual MIMO 5G frequency shift system, comprising:
the system comprises a 5G single-path frequency shift near-end machine, at least one over-current coupler, at least one power divider and at least one 5G single-path frequency shift far-end machine; wherein the content of the first and second substances,
the two input ends of the 5G single-path frequency shift near-end machine are respectively connected with the two output ends of the 5G NR information source through radio frequency feeders, the output end of the 5G single-path frequency shift near-end machine is connected with the input end of the power divider through a radio frequency feeder, and the output end of the power divider is connected with the input end of the first overcurrent coupler;
and a first output end of the first overcurrent coupler is connected with an input end of the first 5G single-path frequency shift remote terminal through a radio frequency feeder.
Further, the 5G single-path frequency shift near-end machine comprises a first single chip microcomputer, a clock synchronization module, a first frequency mixer and a first multifunctional device; the first single chip microcomputer, the clock synchronization module and the first frequency mixer are connected with each other pairwise, and the output end of the first frequency mixer is connected with the input end of the first multiplexer; the output end of the first multiplexer is connected with a second multiplexer in the 5G single-path frequency shift remote terminal.
Furthermore, the input end of the first mixer is connected with the first path of 3.5G radio frequency input signal, and two output ends of the first mixer are connected with two input ends of the first multiplexer in a one-to-one correspondence manner and respectively output 1.1G and 1.3G radio frequency signals; the third input end of the first multiplexer is connected with the second path of 3.5G radio frequency input signals, and the output end of the first multiplexer outputs 1.1G, 1.3G and 3.5G radio frequency output signals.
Further, the 5G single-path frequency shift remote terminal comprises a second single chip microcomputer, an FPGA synchronization module, a clock chip, a second frequency mixer and a second multiplexer; the second mixer, the second single chip microcomputer, the clock chip and the FGPA synchronous module are connected with each other pairwise, and the output end of the second multifunctional device is connected with the input end of the second mixer.
Further, the second multiplexer includes three output terminals, which respectively output 1.1G, 1.3G and a second path of 3.5G radio frequency output signals, wherein the 1.1G and 1.3G radio frequency output signals are connected to two input terminals of the second mixer one by one. The output end of the second mixer outputs a first path of 3.5G radio frequency output signal.
Furthermore, the system comprises a plurality of overcurrent couplers and a plurality of 5G single-circuit frequency-shifting remote terminals, wherein each overcurrent coupler is connected with one corresponding 5G single-circuit frequency-shifting remote terminal through a radio-frequency feeder line.
Further, the overcurrent coupler is a 3.5G overcurrent coupler.
Further, the 5G single-path frequency shift near-end machine supplies power to the 5G single-path frequency shift far-end machine through feeding.
Further, the 5G single-path frequency shift remote terminal integrates a dual-polarized antenna.
Further, a POE external power supply mode is adopted to supply power to the 5G single-path frequency shift remote terminal.
The utility model has the advantages of:
the utility model provides a single feeder walks 5G shift frequency technique of two MIMO realizes that single feeder walks 2X 2MIMO signal, reduces 5G high frequency transmission loss simultaneously, brings the resource saving. A single antenna feeder deployed in the existing network is reused, 2 x 2MIMO is supported, the network rate and the user perception are improved, and an operator is helped to improve the competitiveness. After frequency shift, the existing 2.7G passive antenna feed system of the network can be reused, and a large amount of resources are saved. After the 3.5G coupler and the 3.5G duplex device are replaced, the 2.7G passive antenna feeder system supports 3.5G, and rapid deployment of a 3.5G network is facilitated. After frequency shift, the 3.5G high frequency is shifted to the intermediate frequency, so that the loss in a transmission network is reduced, and power resources and energy consumption are saved. After frequency shift, double MIMO is fed back on a single day, the speed is higher, and the user perception is better.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic diagram of a conventional room-division dual MIMO system.
Fig. 2 shows a schematic diagram of a single feeder line dual MIMO 5G frequency shift system according to embodiment 1 of the present invention.
Fig. 3 is a schematic diagram illustrating internal structures of AU and RU in a single-feeder dual-MIMO 5G frequency shift system according to embodiment 1 of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The utility model provides a single feeder walks 5G frequency shift system of two MIMO uses near-end machine to shift frequency to the 5G signal of feed-in and handles and fall to the intermediate frequency channel, and after the back signal of shifting frequency reachs the remote unit through indoor passive distribution system, do again and shift frequency and handle and resume to original 5G signal. The system can upgrade the single-path passive antenna feeder distribution system to support 5G 2 x 2MIMO, and improves the user rate experience and enhances the network competitiveness of operators.
Example 1
As shown in fig. 1, according to the embodiment 1 of the present invention, a 5G frequency shift system for dual MIMO is provided for a single feeder, including:
the system comprises a 5G single-path frequency shift near-end machine (AU), at least one over-current coupler, at least one power divider and at least one 5G single-path frequency shift far-end machine (RU); wherein the content of the first and second substances,
two input ends of the 5G single-path frequency shift near-end machine are respectively connected with two output ends of the 5GNR information source through radio frequency feeder lines, and receive MIMO1 and MIMO2 signals. The output end of the 5G single-path frequency shift near-end machine is connected to the input end of the power divider through a feeder line, and the output end of the power divider is connected to the input end of a first overcurrent coupler (the overcurrent coupler above the power divider in fig. 2). The first output end of the first overcurrent coupler is connected with the input end of a first 5G single-circuit frequency-shifting remote terminal (namely a remote active antenna RU2 in FIG. 2) through a radio frequency feeder. The first 5G single-path frequency-shift remote terminal respectively sends out MIMO1 and MIMO2 signals through two antennas.
According to the preferred embodiment of the utility model, can also include more couplers, merit and divide ware, 5G single-way frequency shift remote terminal. For example, in fig. 2, N overcurrent couplers and N5G single-channel frequency-shift remote terminals are included. Each overcurrent coupler is connected to a remote unit by a radio frequency feed and produces a pair of MIMO1 and MIMO2 signals.
The utility model discloses a 5G NR frequency shift double-circuit system to 3.5G is the example, and it handles two way high-frequency 3.5G MIMO signals through frequency shift near-end machine (AU), and the frequency shift is 1.1G, 1.3G's intermediate frequency signal, through two way MIMO intermediate frequency signals of single feeder transmission, and the department is resumeed received intermediate frequency signal to the high frequency signal of two way 3.5G MIMO to distal end active antenna (RU).
As shown in fig. 3, it is a schematic diagram of the internal structures of AU and RU in a single feeder line dual MIMO 5G frequency shift system according to embodiment 1 of the present invention. The left side is the structure of the frequency shift near-end unit AU, and the right side is the structure of the active far-end unit RU.
The 5G single-path frequency shift near-end machine comprises a first single chip microcomputer, a clock synchronization module, a first frequency mixer and a first multifunctional device; the first frequency mixer is connected with a first path of 3.5G radio frequency input signal and is connected with the first single chip microcomputer and the clock synchronization module, and two output ends of the first frequency mixer are connected with two input ends of the first multifunctional device in a one-to-one correspondence mode and respectively output 1.1G and 1.3G radio frequency signals; the third input end of the first multiplexer is connected with the second path of 3.5G radio frequency input signals, and the output end of the first multiplexer is connected with the second multiplexer in the 5G single-path frequency shift remote terminal and outputs 1.1G, 1.3G and 3.5G radio frequency output signals. The first single chip microcomputer is also connected with a clock synchronization module.
The 5G single-path frequency shift remote terminal comprises a second single chip microcomputer, an FPGA synchronous module, a clock chip, a second frequency mixer and a second multiplexer; the second multiplexer comprises three output ends which respectively output 1.1G, 1.3G and a second path of 3.5G radio frequency output signals, wherein the 1.1G and 1.3G radio frequency output signals are connected with two input ends of the second frequency mixer one by one. The second mixer, the second single chip microcomputer, the clock chip and the FGPA synchronous module are connected with each other pairwise, and the output end of the second mixer outputs a first path of 3.5G radio frequency output signal.
It should be noted that, in this embodiment 1, the 5G single-channel frequency shift near-end device supplies power to the 5G single-channel frequency shift far-end device through power feeding, or supplies power to the 5G single-channel frequency shift far-end device by using a POE external power supply mode.
The utility model provides a various implementation methods such as chip, singlechip, FPGA, detection circuitry can be adopted to FPGA synchronization module, clock chip, singlechip, because its concrete hardware implementation form is the ordinary selection of various prior art, no longer gives unnecessary details here.
The utility model provides a pair of single feeder line is walked 5G of two MIMO and is shifted frequency system, near-end machine feed-in 2 way 5G signals shift frequency, near-end machine shift frequency to intermediate frequency signal with the signal of information source feed-in, realize single port output 2 way 5G signals, transmit through single feeder line, locate to restore into 2 way 2 MIMO's 5G signals to 2 way intermediate frequency signal shifting far-end machine.
It should be noted that:
in the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed to reflect the intent: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore, may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A single-feeder dual MIMO 5G frequency shift system, comprising:
the system comprises a 5G single-path frequency shift near-end machine, at least one over-current coupler, at least one power divider and at least one 5G single-path frequency shift far-end machine; wherein the content of the first and second substances,
the two input ends of the 5G single-path frequency shift near-end machine are respectively connected with the two output ends of the 5G NR information source through radio frequency feeders, the output end of the 5G single-path frequency shift near-end machine is connected with the input end of the power divider through a radio frequency feeder, and the output end of the power divider is connected with the input end of the first overcurrent coupler;
and a first output end of the first overcurrent coupler is connected with an input end of the first 5G single-path frequency shift remote terminal through a radio frequency feeder.
2. A single-feed-line dual MIMO 5G frequency shift system according to claim 1,
the 5G single-path frequency shift near-end machine comprises a first single chip microcomputer, a clock synchronization module, a first frequency mixer and a first multifunctional device; the first single chip microcomputer, the clock synchronization module and the first frequency mixer are connected with each other pairwise, and the output end of the first frequency mixer is connected with the input end of the first multiplexer; the output end of the first multiplexer is connected with a second multiplexer in the first 5G single-path frequency shift remote terminal.
3. A single-feed-line dual MIMO 5G frequency shift system according to claim 2,
the input end of the first frequency mixer is connected with a first path of 3.5G radio frequency input signal, and two output ends of the first frequency mixer are correspondingly connected with two input ends of a first multiplexer one by one and respectively output 1.1G and 1.3G radio frequency signals; the third input end of the first multiplexer is connected with the second path of 3.5G radio frequency input signals, and the output end of the first multiplexer outputs 1.1G, 1.3G and 3.5G radio frequency output signals.
4. A single-feed-line dual MIMO 5G frequency shift system according to any of claims 1-3,
the first 5G single-path frequency shift remote terminal comprises a second single chip microcomputer, an FPGA synchronization module, a clock chip, a second frequency mixer and a second multi-function device; the second mixer, the second single chip microcomputer, the clock chip and the FGPA synchronous module are connected with each other pairwise, and the output end of the second multifunctional device is connected with the input end of the second mixer.
5. A single-feed-line dual MIMO 5G frequency shift system according to claim 4,
the second multiplexer comprises three output ends which respectively output 1.1G, 1.3G and a second path of 3.5G radio frequency output signals, wherein the 1.1G and 1.3G radio frequency output signals are connected with two input ends of the second frequency mixer one by one; the output end of the second mixer outputs a first path of 3.5G radio frequency output signal.
6. A single feed line dual MIMO 5G frequency shift system according to claim 1 or 2,
the system comprises a plurality of overcurrent couplers and a plurality of 5G single-path frequency-shifting remote terminals, wherein each overcurrent coupler is connected with one corresponding 5G single-path frequency-shifting remote terminal through a radio frequency feeder line.
7. A single feed line dual MIMO 5G frequency shift system according to claim 1 or 2,
the overcurrent coupler is a 3.5G overcurrent coupler.
8. A single feed line dual MIMO 5G frequency shift system according to claim 1 or 2,
and the 5G single-path frequency shift near-end machine supplies power to the 5G single-path frequency shift far-end machine through feeding.
9. A single feed line dual MIMO 5G frequency shift system according to claim 1 or 2,
and the 5G single-path frequency shift remote terminal integrates a dual-polarized antenna.
10. A single feed line dual MIMO 5G frequency shift system according to claim 1 or 2,
and a POE external power supply mode is adopted to supply power to the 5G single-path frequency shift remote terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220131777.1U CN217363062U (en) | 2022-01-18 | 2022-01-18 | Single feeder line double MIMO 5G frequency shift system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220131777.1U CN217363062U (en) | 2022-01-18 | 2022-01-18 | Single feeder line double MIMO 5G frequency shift system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217363062U true CN217363062U (en) | 2022-09-02 |
Family
ID=83043608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220131777.1U Withdrawn - After Issue CN217363062U (en) | 2022-01-18 | 2022-01-18 | Single feeder line double MIMO 5G frequency shift system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217363062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114584159A (en) * | 2022-01-18 | 2022-06-03 | 江苏通鼎宽带有限公司 | Single feeder line double MIMO 5G frequency shift system |
-
2022
- 2022-01-18 CN CN202220131777.1U patent/CN217363062U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114584159A (en) * | 2022-01-18 | 2022-06-03 | 江苏通鼎宽带有限公司 | Single feeder line double MIMO 5G frequency shift system |
| CN114584159B (en) * | 2022-01-18 | 2024-06-18 | 江苏通鼎宽带有限公司 | Single feeder walk double MIMO's 5G frequency shift system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102308437B (en) | Antenna device | |
| EP2544505B1 (en) | Dual WiFi apparatus for wireless Internet and wireless Internet system using the same | |
| CN103682628B (en) | Antenna assembly and the method being used for forming antenna | |
| CN103580708B (en) | A kind of transceiver arrangement, array antenna device and indoor and outdoors covering system | |
| CN217363062U (en) | Single feeder line double MIMO 5G frequency shift system | |
| CN104092026B (en) | A kind of antenna transmission device and mobile terminal and antenna design method | |
| CN103747447A (en) | Radio modem and power TD-LTE private network common antenna system and implementation method thereof | |
| CN206022622U (en) | A kind of coupling parasitism low section high-isolation mimo antenna | |
| CN104332706A (en) | Antenna device, electronic equipment and method for setting the antenna device | |
| CN217363063U (en) | 5G NR frequency shift double-channel MIMO power self-balancing system | |
| CN109728406A (en) | Antenna system and electronic equipment | |
| CN103179388B (en) | Multiple-link satellite digital television signal matrix method of reseptance and device thereof | |
| CN217363096U (en) | 5G single-channel frequency shift remote terminal | |
| KR20150080421A (en) | Transmission and Receive Array Antenna Equipment with Ultra High Isolation | |
| CN217363064U (en) | 5G room divides double-circuit system of shifting frequency | |
| CN104467901B (en) | A kind of antenna multiplexed apparatus, method and electronic equipment | |
| CN114584158B (en) | MIMO power self-balancing system of 5G NR frequency shift double-circuit | |
| CN114584159B (en) | Single feeder walk double MIMO's 5G frequency shift system | |
| CN217363065U (en) | Terminal antenna monitoring device is divided to 5G room | |
| CN210806011U (en) | Antenna system and mobile terminal | |
| CN202696592U (en) | Transceiver device, array antenna device and indoor and outdoor coverage system | |
| CN103563167A (en) | Node in wireless communication system with different functional modes | |
| CN205610848U (en) | Signal transmission system | |
| CN103887606B (en) | Antenna device and method for making antenna device | |
| CN204795460U (en) | Built -in aerial, WOC device and signal transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220902 Effective date of abandoning: 20240618 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20220902 Effective date of abandoning: 20240618 |