CN115835614A - Wireless signal shielding device - Google Patents
Wireless signal shielding device Download PDFInfo
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- CN115835614A CN115835614A CN202211692922.4A CN202211692922A CN115835614A CN 115835614 A CN115835614 A CN 115835614A CN 202211692922 A CN202211692922 A CN 202211692922A CN 115835614 A CN115835614 A CN 115835614A
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- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000001228 spectrum Methods 0.000 claims description 8
- 238000000411 transmission spectrum Methods 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 2
- 108700010388 MIBs Proteins 0.000 description 1
- 101150039363 SIB2 gene Proteins 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- 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
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Abstract
The invention relates to the field of signal shielding equipment, in particular to a wireless signal shielding device which comprises a signal shielding device, a plurality of antennas and a mounting structure, wherein the signal shielding device is used for generating shielding signals, the mounting structure is used for mounting the signal shielding device, a top cover is arranged at the top of a shell to protect the signal shielding device in the shell, a placing groove is formed in the top cover, so that the antennas can be conveniently placed in the placing groove, the positions of the antennas are fixed through a locking structure, a first rotating head of each antenna can allow the antenna to rotate around the shell, then a sliding rod can adjust the height of each antenna body to a proper position, a second rotating head can be rotated to place the antenna bodies in the placing groove, and the positions of the antenna bodies are fixed through the locking structure, so that the antennas can be conveniently stored and protected, the movement and the carrying are more convenient, and the antennas cannot be damaged.
Description
Technical Field
The invention relates to the field of spent signal shielding equipment, in particular to a wireless signal shielding device.
Background
The working principle of mobile communication is that wireless devices (such as mobile phones and the like) and base stations complete signal transmission through specific frequency of electromagnetic waves and a modulation and demodulation mode in a specific frequency range. When the wireless communication equipment communicates, the wireless communication equipment contacts the base station through an uplink channel, and then the signal is transferred to a mobile service switching center to realize communication. In the standby state, the wireless communication equipment contacts with the base station through the broadcast control channel, once a call is required, a connection request is initiated to the base station, and a temporary communication channel is allocated to the wireless communication equipment according to the specific condition of a wireless communication infrastructure channel, so that the wireless communication equipment jumps to a service channel to realize the call and data transmission. Meanwhile, wireless communication must ensure enough signal-to-noise ratio to complete communication after effective reception.
With the development of wireless networks, wireless communication occupies a leading position in public communication, but in some occasions, such as examination room periphery, prisons, army premises, other critical places involved in secret, and the like, wireless signals need to be shielded, and the traditional wireless signal shielding device reduces the signal-to-noise ratio of wireless communication facilities by using high power to interfere the frequency band of the wireless communication facilities, so that the wireless communication parties cannot effectively modulate and demodulate communication channels to realize signal shielding. The shielding destroys the normal communication requirements of the public, so that the research and development of a targeted signal shielding module can meet the two requirements of shielding and communication.
The existing wireless signal shielding device is generally provided with a plurality of antennas so as to improve the coverage, but the antennas are inconvenient to store in the moving process, and the antennas are easily damaged.
Disclosure of Invention
The invention aims to provide a wireless signal shielding device, which aims to better protect an antenna and avoid damage when the wireless signal shielding device is carried and moved.
In order to achieve the above object, the present invention provides a wireless signal shielding device, including a signal shielding device, a plurality of antennas and a mounting structure, wherein the signal shielding device is disposed in the mounting structure, the mounting structure includes a housing, a top cover and a plurality of locking structures, the top cover is fixedly connected to the housing and is located at the top of the housing, the top cover has a plurality of placing slots, the plurality of locking structures are respectively disposed in the plurality of placing slots, the plurality of antennas are correspondingly disposed at one side of the plurality of placing slots, the antenna includes a first rotating head, a second rotating head, an antenna body and a sliding rod, the first rotating head is rotatably connected to the housing and is located at one side of the housing, the sliding rod is slidably connected to the first rotating head and is located at one side of the first rotating head, the second rotating head is rotatably connected to the sliding rod and is located at one side of the sliding rod, and the antenna body is connected to the second rotating head and is located at one side of the second rotating head.
Wherein the signal shielding device comprises a wireless spectrum scanning module, a signal generating module, a wireless radio frequency module, a power adjusting module and a network management system interface,
the wireless spectrum scanning module is used for analyzing the received signals on the transmission spectrum and identifying candidate transmission channel frequencies in the transmission spectrum
The signal generating module is used for obtaining an output shielding signal based on the candidate transmission channel frequency;
the wireless radio frequency module is used for transmitting shielding signals;
the power adjusting module is used for adjusting the range of the radio frequency signal based on the working range;
the network management system interface is used for carrying out signaling exchange with an upper controller.
The signal shielding device also comprises a safety protection module, wherein the safety protection module is used for encrypting the data transmitted by the network management system interface.
The shell comprises a shell body and a non-slip mat, wherein the non-slip mat is fixedly connected with the shell body and is positioned at the bottom of the shell.
The locking structure comprises a first triangular block, a second triangular block, a first return spring and a second return spring, the first triangular block and the second triangular block are slidably connected with the top cover and located on two sides of the placing groove, the first return spring is arranged between the first triangular block and the top cover, and the second return spring is arranged between the second triangular block and the top cover.
The locking structure further comprises a protection pad, and the protection pad is connected with the first triangular block and the second triangular block.
The sliding rod comprises a loop bar, a third reset spring and an inner bar, the loop bar is fixedly connected with the first rotating head and is located on one side of the first rotating head, the inner bar is fixedly connected with the loop bar and is located on one side of the loop bar, and the third reset spring is arranged between the loop bar and the inner bar.
According to the wireless signal shielding device, the signal shielding device is used for generating shielding signals, the mounting structure is used for mounting the signal shielding device, the top cover is arranged at the top of the shell to protect the signal shielding device in the shell, the top cover is provided with the placing groove, so that an antenna can be conveniently placed in the mounting structure, the position of the antenna is fixed through the locking structure, the first rotating head of the antenna can allow the antenna to rotate around the shell, then the sliding rod can be slid to adjust the height of the antenna body to a proper position, the second rotating head can be rotated to place the antenna body in the placing groove, and the locking structure is used for fixing the position, so that the antenna can be conveniently stored and protected, the movement and carrying are more convenient, and the antenna cannot be damaged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a configuration diagram of a wireless signal masker according to a first embodiment of the present invention.
Fig. 2 is a sectional structural view of the wireless signal shield along the antenna according to the first embodiment of the present invention.
Fig. 3 is a structural diagram of a signal masker of a second embodiment of the present invention.
Fig. 4 is a sectional structural view of a signal masker of a third embodiment of the present invention.
Fig. 5 is a partially enlarged view a of fig. 4.
Fig. 6 is a sectional structural view of a signal shield along an antenna according to a third embodiment of the present invention.
Fig. 7 is a structural diagram of a signal masker of a fourth embodiment of the present invention.
Fig. 8 is a sectional view of a signal shielding device along a jack according to a fourth embodiment of the present invention.
Fig. 9 is a sectional view of a signal shielding device along a screw according to a fourth embodiment of the present invention.
101-signal shielding device, 102-antenna, 103-installation structure, 104-shell, 105-top cover, 106-locking structure, 107-first rotating head, 108-second rotating head, 109-antenna body, 110-sliding rod, 201-wireless spectrum scanning module, 202-signal generating module, 203-wireless radio frequency module, 204-power adjusting module, 205-network management system interface, 206-safety protection module, 301-shell body, 302-non-slip pad, 303-first triangular block, 304-second triangular block, 305-first return spring, 306-second return spring, 307-protection pad, 308-sleeve rod, 309-third return spring, 310-inner rod, 401-protection structure, 402-cover plate, 403-clamping structure, 404-cover plate body, 405-ejector rod, 406-sealing ring, 407-screw rod, 408-clamping block, 409-rotating handle.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
First embodiment
Referring to fig. 1 to 2, fig. 1 is a structural diagram of a wireless signal shielding device according to a first embodiment of the present invention. Fig. 2 is a sectional structural view of the wireless signal shield along the antenna according to the first embodiment of the present invention.
The invention provides a wireless signal shielding device: comprising a signal shield 101, a plurality of antennas 102 and a mounting structure 103, said mounting structure 103 comprising a housing 104, a top cover 105 and a plurality of locking structures 106, said antenna 102 comprising a first rotating head 107, a second rotating head 108, an antenna body 109 and a sliding rod 110.
The signal shielding device 101 is disposed in the mounting structure 103, the top cover 105 is fixedly connected to the housing 104 and located on the top of the housing 104, the top cover 105 has a plurality of placement slots, the plurality of locking structures 106 are disposed in the plurality of placement slots, the plurality of antennas 102 are correspondingly disposed on one side of the plurality of placement slots, the first rotating head 107 is rotatably connected to the housing 104 and located on one side of the housing 104, the sliding rod 110 is slidably connected to the first rotating head 107 and located on one side of the first rotating head 107, the second rotating head 108 is rotatably connected to the sliding rod 110 and located on one side of the sliding rod 110, and the antenna body 109 is connected to the second rotating head 108 and located on one side of the second rotating head 108.
In this embodiment, the signal shielding device 101 is configured to generate a shielding signal, and the mounting structure 103 is configured to mount the signal shielding device 101, wherein the top cover 105 is disposed on the top of the housing 104 to protect the signal shielding device 101 in the housing 104, a placement groove is disposed on the top cover 105, so that the antenna 102 can be conveniently placed in the placement groove, and the position of the antenna 102 is fixed by the locking structure 106, the first rotating head 107 of the antenna 102 can allow the antenna 102 to rotate around the housing 104, and then the sliding rod 110 is slid to adjust the height of the antenna body 109 to a proper position, and then the second rotating head 108 can be rotated to place the antenna body 109 in the placement groove, and the locking structure 106 is used to fix the position, so that the antenna 102 can be conveniently stored and protected, and the movement and carrying are more convenient, and the antenna 102 cannot be damaged.
Second embodiment
Referring to fig. 3, fig. 3 is a structural diagram of a signal shielding device 101 according to a second embodiment of the invention. On the basis of the first embodiment, the present invention further provides a wireless signal masker 101, where the signal masker 101 includes a wireless spectrum scanning module 201, a signal generating module 202, a wireless radio frequency module 203, a power adjusting module 204, and a network management system interface 205, and the signal masker 101 further includes a security protection module 206.
The wireless spectrum scanning module 201 is configured to analyze a received signal over a transmission spectrum to identify candidate transmission channel frequencies within the transmission spectrum.
The signal generating module 202 is configured to obtain an output mask signal based on the candidate transmission channel frequency;
the wireless radio frequency module 203 is used for transmitting shielding signals;
the power adjusting module 204 is configured to adjust a radio frequency signal range based on the working range;
the network management system interface 205 is used for performing signaling exchange with a superior controller.
The security module 206 is configured to encrypt data transmitted by the network management system interface 205.
The frequency of use by various operators in the country is as follows, which has a specific influence on the wireless spectrum scanning module 201 and the signal generating module 202. The uplink frequency 905-909Mhz and the downlink frequency 950-954Mhz of the China Mobile GSM900, the uplink frequency 1710-1785MHz and the downlink frequency 1805-1880MHz of the China Mobile GSM 1800; uplink frequency 909-915Mhz and downlink frequency 954-960MHz of China Unicom GSM; uplink and downlink frequencies of TD-SCDMA of China mobile are 1880-1920MHz and 2010-2025MHz; china Unicom WCDMA, uplink frequency 1920-1980Mhz, downlink frequency 2110-2170Mhz; the uplink frequency of China telecom CDMA2000 is 1920-1980MHz, and the downlink frequency is 2110-2170MHz; uplink and downlink frequencies of TD-LTE in China mobile are 1880-1900MHz, 2320-2370MHz and 2575-2635MHz; uplink and downlink frequencies of the TD-LTE in China Unicom are 2300-2320MHz and 2555-2575MHz, and uplink and downlink frequencies of the FDD-LTE are 1745-1765MHz and 1840-1860MHz; uplink and downlink frequencies 2370-2390MHz and 2635-2655MHz of TD-LTE in China telecom, and uplink and downlink frequencies 1765-1780MHz and 1860-1875MHz of FDD-LTE; uplink and downlink frequencies of 5G of China Mobile are 2515-2675MHz and 4800-4900MHz; the uplink and downlink frequency of China Unicom 5G is 3400-3500MHz; the uplink and downlink frequency of China telecom 5G is 3500-3600MHz.
A GSM broadcast channel BCH; an LTE physical broadcast channel PBCH (main message module: information of downlink system broadband BW, PHICH resource indication, system frame number SFN, mode of using mask by CRC, frequency point, PCI, number of antennas 102, etc.) and a physical downlink synchronization channel PDSCH (SIB 1: information including NSA layer; SIB2: information including URA and UE timer/counter; SIB3: information including parameters for cell selection and reselection; SIB5: information including parameters for cell common physical channel configuration; SIB7: information including uplink interference and dynamic persistence level; SIB11: information including measurement control information, system carefully transmits on BCCH, then maps to BCH or FACH, and always matches with BCH or FACH transmission size, if necessary, RRC is responsible for inserting padding bits; SIB18: identification of neighboring cells in idle and connected mode; SIB19: frequency and priority among cells of different systems.
The system information is divided into MasterInformationBlock (MIB) and multiple MIBs
SystemInformationBlocks (SIBs). The MIB includes a limited number of the most important, most commonly used transmission parameters that require further information from the cell. The SIBs are carried in the Systemlnformation (SI) message instead of the systemlnformationblocktype 1, the mapping of the SIBs to the SI information is flexibly configured and configured by the schedulinglnfo list contained in the systemlnformationblocktype 1, there are some constraints that each SIB is contained in a single SI message only, only SIBs with the same scheduling requirements (periodicity) can be mapped to the same SI message, and the systemlnformationblocktype 2 can always be mapped to the SI message corresponding to the first entry in the list of SI messages in the schedulinglnfo list. There may be multiple transmissions of SI messages with the same periodicity. SystemInformationBlockType1 and all SI messages are transmitted on DL-SCH
Third embodiment
Referring to fig. 4 to 6, fig. 4 is a cross-sectional structural diagram of a signal shielding device according to a third embodiment of the present invention. Fig. 5 is a partially enlarged view a of fig. 4. Fig. 6 is a sectional structure diagram of a signal shield along an antenna according to a third embodiment of the present invention on the basis of the second embodiment, the present invention further provides a wireless signal shield 101, the housing 104 includes a housing body 301 and a non-slip mat 302, the locking structure 106 includes a first triangular block 303, a second triangular block 304, a first return spring 305 and a second return spring 306, the locking structure 106 further includes a protection mat 307, the sliding rod 110 includes a sleeve rod 308, a third return spring 309 and an inner rod 310,
in this embodiment, the non-slip pad 302 is fixedly connected to the housing body 301 and is located at the bottom of the housing 104. The anti-slip pad 302 can increase the friction force between the shell body 301 and the placing surface, so that the placing is more stable.
Wherein the first triangle block 303 and the second triangle block 304 are slidably connected with the top cover 105 and located at both sides of the placing slot, the first return spring 305 is disposed between the first triangle block 303 and the top cover 105, and the second return spring 306 is disposed between the second triangle block 304 and the top cover 105. After the antenna body 109 contacts the first triangular block 303 and the second triangular block 304, the first triangular block 303 and the second triangular block 304 are pushed away by an external force, at this time, the first return spring 305 and the second return spring 306 are compressed, and then the first triangular block 303 and the second triangular block 304 are restored to original positions by restoring forces of the first return spring 305 and the second return spring 306, so that the antenna body 109 can be well protected.
Next, the protection pad 307 is connected to the first triangular block 303 and the second triangular block 304. The protection pad 307 is made of a flexible material, and the antenna body 109 can be flexibly contacted through the protection pad 307, so that the use is more convenient.
The loop bar 308 is fixedly connected with the first rotating head 107 and located at one side of the first rotating head 107, the inner bar 310 is fixedly connected with the loop bar 308 and located at one side of the loop bar 308, and the third return spring 309 is arranged between the loop bar 308 and the inner bar 310. When the antenna body 109 needs to be stored, the inner rod 310 is pulled, so that the second rotating head 108 can slide out of the loop bar 308 and then can rotate the antenna body 109 to store, at this time, the third return spring 309 is in a stretching state, when the antenna needs to be used, after the restriction of the locking structure 106 on the antenna body 109 is relieved, under the action of the restoring force of the third return spring 309, the inner rod 310 moves downwards, and then the antenna body 109 can be automatically rotated to be horizontal to the loop bar 308 by means of the support of the loop bar 308, so that the antenna is more convenient to use.
Fourth embodiment
Referring to fig. 7 to 9, fig. 7 is a structural diagram of a signal shielding device according to a fourth embodiment of the present invention. Fig. 8 is a sectional view of a signal shielding device along a jack according to a fourth embodiment of the present invention. Fig. 9 is a sectional view of a signal shielding device along a screw according to a fourth embodiment of the present invention. On the basis of the third embodiment, the present invention further provides a wireless signal shielding device 101, wherein the wireless signal shielding device 101 further includes a protection structure 401, the protection structure 401 includes a cover plate 402 and a fastening structure 403, the cover plate 402 includes a cover plate body 404, a plunger 405 and a sealing ring 406, and the fastening structure 403 includes a screw 407, two fastening blocks 408 and a rotating handle 409.
In this embodiment, the cover body 404 is rotatably connected to the top cover 105 and located on one side of the top cover 105, the plunger 405 is fixedly connected to the cover 402 and located on one side of the cover 402 close to the antenna 102, the sealing ring 406 is fixedly connected to the plunger 405 and located between the plunger 405 and the top cover 105, in order to maintain an aesthetic appearance and prevent external impurities from entering, the cover body 404 may be configured to cover the whole top cover 105, so as to provide better protection, in addition, when the cover body 404 is opened to a preset angle, the plunger 405 may contact the antenna body 109, and when the cover body 404 is continuously opened, the plurality of antenna bodies 109 may be simultaneously taken out from the locking structure 106 through the plunger 405, so as to make the use more convenient, the sealing ring 406 is configured to improve the sealing performance of the hole opened by the top cover 105 to accommodate the plunger 405, so as to prevent external impurities from entering.
The screw 407 is rotatably connected with the housing 104 and penetrates through the housing 104, the two fixture blocks 408 are threadedly connected with the screw 407 and are located at two sides of the screw 407 and slidably connected with the housing 104, and the rotating handle 409 is fixedly connected with the screw 407 and is located at one side of the housing 104. The screw 407 may be provided for maintaining stability of the cover plate 402 when covering the top cover 105, and the screw 407 has two opposite threads, and when the screw 407 is rotated, the two blocks 408 may be driven to move outwards into the grooves on the top cover 105, so that the top cover 105 is fixed more stably, and when it is required to open, the screw 407 is rotated reversely.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A wireless signal shielding device is characterized in that,
including signal shielding ware, a plurality of antenna and mounting structure, signal shielding ware sets up in the mounting structure, mounting structure includes shell, top cap and a plurality of locking structure, the top cap with shell fixed connection, and be located the shell top, the top cap has a plurality of standing grooves, and is a plurality of locking structure sets up respectively in a plurality of in the standing groove, it is a plurality of the antenna correspondence sets up in a plurality of one side of standing groove, the antenna includes first rotation head, second rotation head, antenna body and slide bar, first rotation head with the shell rotates to be connected, and is located one side of shell, the slide bar with first rotation head sliding connection, and be located one side of first rotation head, the second rotation head with the slide bar rotates to be connected, and is located one side of slide bar, the antenna body with the second rotation head is connected, and is located one side of second rotation head.
2. The wireless signal masker of claim 1,
the signal shielding device comprises a wireless spectrum scanning module, a signal generating module, a wireless radio frequency module, a power adjusting module and a network management system interface,
the wireless spectrum scanning module is used for analyzing the received signals on the transmission spectrum and identifying candidate transmission channel frequencies in the transmission spectrum
The signal generating module is used for obtaining an output shielding signal based on the candidate transmission channel frequency;
the wireless radio frequency module is used for transmitting shielding signals;
the power adjusting module is used for adjusting the range of the radio frequency signal based on the working range;
the network management system interface is used for carrying out signaling exchange with an upper-level controller.
3. The wireless signal masker of claim 2,
the signal shielding device also comprises a safety protection module which is used for encrypting the data transmitted by the network management system interface.
4. The wireless signal masker of claim 3,
the shell comprises a shell body and a non-slip mat, wherein the non-slip mat is fixedly connected with the shell body and is positioned at the bottom of the shell.
5. The wireless signal masker of claim 4,
the locking structure comprises a first triangular block, a second triangular block, a first return spring and a second return spring, the first triangular block and the second triangular block are connected with the top cover in a sliding mode and located on two sides of the placing groove, the first return spring is arranged between the first triangular block and the top cover, and the second return spring is arranged between the second triangular block and the top cover.
6. The wireless signal masker of claim 5,
the locking structure further comprises a protection pad, and the protection pad is connected with the first triangular block and the second triangular block.
7. The wireless signal masker of claim 6,
the slide bar includes loop bar, third reset spring and interior pole, the loop bar with first rotation head fixed connection, and be located one side of first rotation head, interior pole with loop bar fixed connection, and be located one side of loop bar, third reset spring sets up the loop bar with between the interior pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211692922.4A CN115835614B (en) | 2022-12-28 | 2022-12-28 | Wireless signal shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211692922.4A CN115835614B (en) | 2022-12-28 | 2022-12-28 | Wireless signal shielding device |
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| Publication Number | Publication Date |
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| CN115835614A true CN115835614A (en) | 2023-03-21 |
| CN115835614B CN115835614B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211692922.4A Active CN115835614B (en) | 2022-12-28 | 2022-12-28 | Wireless signal shielding device |
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| CN114583431A (en) * | 2022-03-15 | 2022-06-03 | 陈佳 | Antenna for 5G equipment and using method thereof |
| CN216851993U (en) * | 2022-03-08 | 2022-06-28 | 山东美承数码科技有限公司 | Wireless communication signal interference device |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060012531A1 (en) * | 1993-04-27 | 2006-01-19 | Kinney Patrick W | Radio transceiver card communicating in a plurality of frequency bands |
| US20110154429A1 (en) * | 2009-12-17 | 2011-06-23 | Winegard Company | Internal television antenna and method for a portable entertainment module |
| CN110474704A (en) * | 2019-08-12 | 2019-11-19 | 浙江三维通信科技有限公司 | Radio signal shielding method and device based on adjustable Sweep Source |
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| Publication number | Publication date |
|---|---|
| CN115835614B (en) | 2024-01-26 |
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