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34results about How to "Reduce path loss" patented technology
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In-building-communication apparatus and method
ActiveUS20100197222A1Reduce path lossEliminate communicationActive radio relay systemsElongated active element feedEngineeringLithium electrode
An In-Building Communications system is disclosed which permits communication in tunnels, underground parking garages, tall buildings such as skyscrapers, buildings having thick walls of concrete or metal, and / or any building which has communication dead zones due to electromagnetic shielding. The invention includes a portable bi-directional amplifier (BDA) system, an outdoor antenna system attached to the building or independently mountable an indoor antenna system attached to the building or independently mountable inside the building, and a standardized, In-Building Communications (IBC) interface box affixed preferably to the exterior of the building. The interface box communicates with antenna systems attached to the building. The fire department or other emergency response personnel carry portable outdoor and indoor antenna systems and a portable, lithium-ion battery powered, bi-directional amplifier (BDA) system which may be connected to the building during an event such as a fire, earthquake, or an act of terrorism or whenever radio coverage enhancement is required. The portable BDA system is simply connected to the standardized, IBC interface box and powered thus restoring communications within.
Owner:SCHEUCHER KARL FREDERICK
Apparatus and method for configuring high-frequency path of dual mode mobile phone
InactiveCN1523912AReduce UMTS pathReduce path lossRadio/inductive link selection arrangementsTransmissionMobile telephonyEngineering
This invention relates to a device and method for reducing UMTS high frequency path loss in a double mode mobile phone compatible with GSM and UMTS. The structure of the device characterizes that a control part monitors and controls each function part of a mobile phone, and outputs the path set controls signals, the path part separates UMTS high frequency signals of DCS and GSM high frequency signals into their own paths for input / output based on the monitor and control of the control part, the duplexer and / receives UMTS signals, DCS emits / receives DCS signals, GSM emits / receives GSM signals.
Owner:INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
A radio frequency front-end circuit and a mobile terminal
ActiveCN109861735ASimple designShorten RF layout tracesSpatial transmit diversityEngineeringCircuit design
The invention provides a radio frequency front-end circuit and a mobile terminal. The circuit comprises a first double-pole double-throw switch; a first signal receiving circuit which is connected with one of the first antenna and the second antenna through a first double-pole double-throw switch and receives signals through the connected antenna; a second double-pole double-throw switch; a secondsignal receiving circuit which is connected with one of the third antenna and the fourth antenna through a second double-pole double-throw switch and receives signals through the connected antenna; athird double-pole double-throw switch which is respectively connected with the first double-pole double-throw switch and the second double-pole double-throw switch; a first radio frequency circuit which is connected with the third double-pole double-throw switch and comprises a signal receiving mode or a signal transmitting mode; And a second radio frequency circuit which is connected with the third double-pole double-throw switch and comprises a signal receiving mode or a signal transmitting mode. The circuit is simple in design, radio frequency layout wiring can be shortened on the basis that signal transmitting and / or receiving are / is achieved, and therefore path difference loss is reduced.
Owner:VIVO MOBILE COMM CO LTD
Radio frequency front-end circuit and mobile terminal
The invention provides a radio frequency front-end circuit and a mobile terminal. The circuit comprises a first signal transmitting circuit and a second signal transmitting circuit, a first change-over switch and a second change-over switch; and a double-pole double-throw switch. The first signal emission circuit is conducted through the first double-pole double-throw switch and the first change-over switch, and emits a signal through the first antenna or the second antenna. Or the first signal transmitting circuit is conducted through the first double-pole double-throw switch and the second change-over switch and transmits signals through the third antenna or the fourth antenna. The second signal transmitting circuit is conducted through the first double-pole double-throw switch and the first change-over switch and transmits a signal through the first antenna or the second antenna. Or the second signal transmitting circuit is conducted through the first double-pole double-throw switchand the second change-over switch and transmits signals through the third antenna or the fourth antenna. The circuit design is simple, the radio frequency layout wiring can be shortened, and the pathdifference loss is reduced.
Owner:VIVO MOBILE COMM CO LTD
Terminal, and method for transmitting and receiving multiple carriers thereof
ActiveCN105490714AFulfilling free space requirementsCompatible with available spaceSpatial transmit diversityMulti bandMultiplexer
The invention provides a terminal and a method for transmitting and receiving multiple carriers thereof. The terminal comprises a multi-band antenna which is provided with a plurality of antenna structures and is used for transmitting or receiving carriers, corresponding to the antenna structures, in multiple carriers through the antenna structures, wherein the antenna structures are corresponding to different frequency bands; a baseband chip which is used for outputting a baseband signal, and configuring the antenna structures corresponding to the frequency bands of all carriers according to the frequency bands of all carriers; and a radio frequency module which is used for modulating the baseband signal on multiple carriers, transmitting the carriers to the multi-band antenna, or enabling the carriers received by the multi-band antenna to be transmitted to the baseband chip. According to the technical scheme of the invention, the method also gives consideration to a usable space of the antenna while meeting the multiband demands of the terminal, and reduces the path loss of a wireless link because a multiplexer is saved.
Owner:ZTE CORP
Uplink scheduling method for base station control
InactiveCN1878018AReduce transmit powerImprove system performanceTransmission control/equalisingRadio transmission for post communicationSystem propertyAuthorization
The invention discloses an ascending dispatching method to control base station, which comprises the following steps: measuring distance between user equipment UE and base station; distributing UE dispatching authorization with higher dispatching authorization for nearer UE to base station and lower dispatching authorization for farther UE from base station. The invention utilizes limit channel resource, which reduces interference for round UE to improve HSUPA system property.
Owner:HUAWEI TECH CO LTD
Information transmission method, initiating node and response node
PendingCN110740457AImprove transmission qualityBeamforming training implementationSpatial transmit diversityNetwork planningInformation transmissionEngineering
The embodiment of the invention provides an information transmission method, an initiating node and a response node. The information transmission method comprises the following steps that: the initiating node sends at least one first frame with at least one directional sending direction to a response node on a low-frequency channel for carrying out beamforming training in the sending direction, and receives a second frame comprising a beamforming training result from the response node on the low-frequency channel. According to the embodiment of the invention, the path loss of transmission information on a low-frequency channel can be reduced, and the signal strength is improved.
Owner:HUAWEI TECH CO LTD
Broadband high-power low-loss circular power allocation synthesizer
The invention provides a broadband high-power low-loss circular power allocation synthesizer which comprises a power allocation ring and at least one isolating ring, wherein the isolating ring is located on the outer portion of the power allocation ring. According to the technical scheme, the broadband high-power low-loss circular power allocation synthesizer is characterized in that low loss and broadband are achieved, and high amplitude and phase consistency exists between two branch circuits. The working principle of a micro-strip annular bridge is used, and therefore the problems of isolation resistance power capacity and insertion loss increase in a traditional Wilkinson power allocation synthesizer can be solved effectively.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
Communication signal transceiving component, terminal and signal transceiving method
Provided in the embodiments of the present invention are a communication signal transceiving component, a terminal and a signal transceiving method, relating to the field of network transmission. The transceiving component comprises: a common antenna, a first communication chip, a second communication chip, a coupler, and a switch module. The first communication chip and the second communication chip are connected to the coupler by means of the switch module. The coupler comprises a first branch and a second branch and is connected to the common antenna to transceive communication signals from the first communication chip and / or the second communication chip. The present invention solves the technical problem in the related art that a time-division mechanism, which needs to be utilized when a BT signal and a WLAN signal need to be transmitted simultaneously because the BT and the WLAN use in common the same antenna, may severely affect the data throughput rate of the WLAN, achieving the effect that two kinds of signals may be transmitted simultaneously to enhance the data throughput rate.
Owner:HUAWEI TECH CO LTD
Millimeter-wave indoor intelligent passive coverage method
ActiveCN107708134AReduce path lossPath loss improvementRadio transmissionNetwork planningBeam directionEngineering
The invention discloses a millimeter-wave indoor intelligent passive coverage method. Direct irradiation coverage is employed in a perpendicular incidence region (21), and a passive reflector (3) is employed for irradiation coverage in a shadow region (22). A signal from a base station (1) is reflected by the passive reflector (3), and then passes through an indoor window and other parts which allow millimeter waves to penetrate easily to arrive at the shadow region (22). The position of the passive reflector (3) enables the number of total reflections of the signal of the base station (1) from the passive reflector (3) to the shadow region (22) to be small as much as possible and enables the path (5) from the passive reflector (3) to the shadow region (22) to be short as much as possible.The wave beam direction (61) of a reflection wave (6) of the passive reflector (3), the number of wave beams and the polarization direction (62) can be adjusted and changed in real time according tothe business demands. The method can reduce the path loss of the millimeter waves, improves the independence of an MIMO channel, and can adjust the number of wave beams and characteristics of the shadow region (22) in real time according to the business demands. The method is characterized in energy saving performance, wide working band and low cost, and is liable to be integrated with a conventional indoor environment.
Owner:南京海得威尔通信科技有限公司
Dual-polarization high-gain directional antenna and design method therefor
InactiveCN105977651AImprove radiation efficiencyReduce distractionsPolarised antenna unit combinationsAntennas earthing switches associationOmnidirectional antennaHigh-gain antenna
The invention discloses a dual-polarization high-gain directional antenna and a design method therefor. The antenna comprises a group of positive 45-degree polarization high-gain antenna array which mainly consists of at least four positive 45-degree polarization antenna subunits; a group of negative 45-degree polarization high-gain antenna array which mainly consists of at least four negative 45-degree polarization antenna subunits; and a reflection plate, two opposite sides of which are respectively provided with two groups of antenna arrays so as to achieve the directional radiation of the antenna. The antenna subunits of the two groups of antenna arrays are orthogonal to each other, and are intersected mutually. Moreover, the distances between the central points of the subunits are greater than the half of the wavelength corresponding to the minimum frequency point of a frequency band designed for the antenna. The antenna can greatly improve the coverage and transmission of a wireless network signal, and especially greatly improves the coverage effect and long-distance bridge transmission performance of a 5GHz signal in a large region. The invention also discloses a design method for the antenna.
Owner:AXILSPOT COMM CO LTD
Wireless charging equipment
ActiveCN103001295AReduce path lossImprove charging efficiencyBatteries circuit arrangementsNon-electrical signal transmission systemsInductive chargingDirectivity
The invention discloses wireless charging equipment which comprises a detecting device, a high directivity antenna and a vacuum box. The detecting device and the high directivity antenna are arranged in the vacuum box, the detecting device is used for detecting the position of a charged device, and the high directivity antenna adjusts the direction to be aligned to the charged device for charging according to the charged device position detected by the detecting device. As the wireless charging equipment is used, the charged device can be charged at any position in the wireless charging equipment, and the freedom degree of wireless charging is improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Integrated structure of chip and substrate antenna based on flip process
PendingCN113629042ARealize path lossBest free designAntenna supports/mountingsSemiconductor/solid-state device detailsHemt circuitsElectrical connection
The invention relates to an integrated structure of a chip and a substrate antenna based on a flip process. The integrated structure comprises a flip chip 1-1, a connecting base plate 1-2, a high-frequency circuit 1-3, an antenna substrate 2-1, an antenna surface structure 2-2, an antenna feed hole 2-3 and a TSV through hole 1-6. The flip chip 1-1 is located below the antenna substrate 2-1, the antenna feed hole 2-3 penetrates through the antenna substrate 2-1, and the TSV through hole 1-6 penetrates through the flip chip 1-1; the connecting base plate 1-2 and the high-frequency circuit 1-3 are both located on the lower surface of the flip chip 1-1 and electrically connected, the antenna surface structure 2-2 is located on the upper surface of the antenna substrate 2-1, and the antenna surface structure 2-2 is connected with the connecting base plate 1-2 through an antenna feed hole 2-3 and a TSV through hole 1-6. Extremely small path loss between a high-frequency device and the antenna is reduced, and meanwhile, the requirements of a small-size structure and high performance are met.
Owner:BEIJING 7Q TECH
Antenna switching circuit, electronic device of antenna switching circuit and antenna switching method of antenna switching circuit
The invention discloses an antenna switching circuit, an electronic device of the antenna switching circuit and an antenna switching method of the antenna switching circuit. The antenna switching circuit is arranged in the electronic device which is provided with an internal antenna and a radio frequency module. The antenna switching circuit comprises an external antenna connector and at least one controller. The external antenna connector is provided with an independent grounding end for receiving independent grounding signals, and is electrically connected with an external antenna. The controller is provided with a first radio frequency end, a second radio frequency end and at least one control end. The first radio frequency end is electrically connected to the radio frequency module. The second radio frequency end is electrically connected to the internal antenna. The control end is used for detecting the independent grounding signals. When the independent grounding signals detected by the controller through the control end do not change, the controller enables the radio frequency module to be electrically connected with the internal antenna. When the independent grounding signals detected by the controller change, the controller can enable the radio frequency module to be electrically connected to the external antenna.
Owner:SHENXUN COMP KUNSHAN +1
Millimeter wave anti-blocking multi-unmanned aerial vehicle deployment method based on building geometric analysis
PendingCN114039652AReduce path lossHigh path lossRadio transmissionTransmission monitoringReal-time computingWhole systems
The invention discloses a millimeter wave anti-blocking multi-unmanned aerial vehicle (UAV) deployment method based on building geometric analysis, and mainly solves the problems of user clustering and UAV deployment when UAVs provide communication services for users in an urban environment. The specific method comprises the following steps: firstly, establishing a millimeter wave channel model capable of predicting signal blocking based on building geometric analysis; providing a BT-K-means multi-unmanned aerial vehicle clustering algorithm, and performing multiple iterations according to a minimum path loss principle to obtain a clustering result of the user and an initial position of the unmanned aerial vehicle; in each cluster, providing an unmanned aerial vehicle position coordinate searching method based on path loss sudden change perception, searching the minimum path loss value in six coordinate axis directions at the same time, unmanned aerial vehicle coordinates are continuously updated through multiple iterations, unmanned aerial vehicle position optimization is achieved, and the final deployment position of each unmanned aerial vehicle is obtained. According to the algorithm provided by the invention, the number of sight distance transmission users can be increased, and meanwhile, the total path loss of the whole system is effectively reduced.
Owner:NORTHWEST UNIV
Particle swarm algorithm-based heterogeneous unmanned aerial vehicle three-dimensional space deployment method and device
ActiveCN113395706AImprove communication qualityReduce path lossRadio transmissionNetwork planningThree-dimensional spaceSimulation
The invention provides a particle swarm algorithm-based heterogeneous unmanned aerial vehicle three-dimensional space deployment method and device, and the method comprises the steps: randomly initializing particles in a target region through a multi-target particle swarm algorithm, and enabling each particle to have four-dimensional parameters, including the three-dimensional space position of each unmanned aerial vehicle in a heterogeneous unmanned aerial vehicle group and the use condition of the unmanned aerial vehicle; calculating the change speed of the three-dimensional position of the unmanned aerial vehicle by using a multi-target particle swarm algorithm and updating the three-dimensional position of the unmanned aerial vehicle; based on the combination of discrete binary particle swarm optimization, calculating the variable quantity of the use condition of each unmanned aerial vehicle of each particle, and updating the use condition of each unmanned aerial vehicle; and on the basis, adding price difference and mutation operation in a genetic algorithm to prevent particle swarm optimization from falling into a local optimal solution too early. Through the combination of the multi-target particle swarm algorithm, the discrete binary particle swarm algorithm and the genetic algorithm, the problem that the deployment of the heterogeneous unmanned aerial vehicle needs to meet the network service is solved.
Owner:ZHENGZHOU UNIV
Millimeter wave outdoor passive covering method
PendingCN107682873AImprove path lossReduce path lossNetwork planningHigh level techniquesFrequency bandMillimetre wave
A millimeter wave outdoor passive covering method is provided. A direct irradiation covering method is applied to a direct irradiation area (21) of a base station (1) and a passive reflector (3) irradiation covering method is applied to the shade area (22) of the base station (1). The base station (1) is located in such a way that a base station (1) signal can reach the shade area (22) by reflections as few as possible and passing by a path (5) as short as possible. The passive reflector (3) is located in such a way that base station (1) signal reaches the shade area (22) path (5) via a one-stage passive reflector (31) or a multi-stage passive reflector (32) by total reflections as few as possible and passing by a total distance as short as possible. The method reduces the path loss of large-scale millimeter-wave propagation, increases the number of independent channels, improves the independence of a MIMO channel, does not use a power supply, and is efficient in energy, wide in frequency band and low in cost, and liable to fuse with conventional environment and buildings.
Owner:南京海得逻捷信息科技有限公司
A radio frequency front-end circuit and mobile terminal
ActiveCN109873664BSimple designSmall lossSpatial transmit diversityTelecommunicationsAntenna (radio)
The invention provides a radio frequency front-end circuit and a mobile terminal. The circuit includes: a gating switch, respectively connected to the first antenna, the second antenna, and a radio frequency circuit module; a double-pole double throw switch, respectively connected to the gating switch, the third antenna, the fourth antenna, and the first radio frequency circuit; wherein, The radio frequency circuit module is connected to the first target antenna in the first antenna and the second antenna through the gating switch, and receives and / or transmits signals through the first target antenna; or, the radio frequency circuit module is through the gating switch, dual The pole double throw switch is connected with the second target antenna in the third antenna and the fourth antenna, and receives and / or transmits signals through the second target antenna; the first radio frequency circuit is connected with the third antenna and the third antenna through the double pole double throw switch. One of the fourth antennas is connected. The circuit design of the invention is simple, and on the basis of realizing signal transmission and / or reception, it can shorten radio frequency layout and wiring, thereby reducing path loss.
Owner:VIVO MOBILE COMM CO LTD
Mainboard device of three-rear-camera mobile phone
ActiveCN110138941AReduce distanceReduce path lossTelephone set constructionsPhysicsPrinted circuit board
The invention discloses a mainboard device of a three-rear-camera mobile phone. The mainboard device comprises a PCB (Printed Circuit Board); a through hole area arranged at the right end of the PCB,and a color lens and a telephoto lens arranged on the through hole area; a black-and-white area arranged above the through hole area, and a black-and-white lens arranged in the black-and-white area; an antenna area arranged above the black and white area; and an antenna control chip arranged on the back surface of the PCB and matched with the black and white area, wherein the color lens, the telephoto lens, the black and white lens and the antenna control chip are electrically connected with the PCB respectively, and the antenna area is electrically connected with the antenna control chip. Byadopting the design, the distance from the antenna to the control chip is greatly reduced through the adjustment of the camera, the path loss of the antenna is effectively reduced, the component areaof the PCB is increased, and the antenna can be effectively applied to the design of mobile phones with more functions and higher integration at present.
Owner:深圳市福日中诺电子科技有限公司
Antenna switching circuit and its electronic device and its antenna switching method
Owner:SHENXUN COMP KUNSHAN +1
Apparatus and method for configuring high-frequency path of dual mode mobile phone
InactiveCN1294778CReduce UMTS pathReduce path lossRadio/inductive link selection arrangementsTransmissionDual modeControl signal
This invention relates to a device and method for reducing UMTS high frequency path loss in a double mode mobile phone compatible with GSM and UMTS. The structure of the device characterizes that a control part monitors and controls each function part of a mobile phone, and outputs the path set controls signals, the path part separates UMTS high frequency signals of DCS and GSM high frequency signals into their own paths for input / output based on the monitor and control of the control part, the duplexer and / receives UMTS signals, DCS emits / receives DCS signals, GSM emits / receives GSM signals.
Owner:INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
Uplink scheduling method for base station control
InactiveCN100583675CReduce transmit powerImprove system performanceTransmission control/equalisingRadio transmission for post communicationUplink schedulingUser equipment
The invention discloses an ascending dispatching method to control base station, which comprises the following steps: measuring distance between user equipment UE and base station; distributing UE dispatching authorization with higher dispatching authorization for nearer UE to base station and lower dispatching authorization for farther UE from base station. The invention utilizes limit channel resource, which reduces interference for round UE to improve HSUPA system property.
Owner:HUAWEI TECH CO LTD
Three-dimensional space deployment method and equipment of heterogeneous UAV based on particle swarm algorithm
ActiveCN113395706BImprove communication qualityReduce path lossRadio transmissionNetwork planningThree-dimensional spaceGenetics algorithms
The present invention provides a three-dimensional space deployment method and device for heterogeneous UAVs based on particle swarm algorithm. The multi-target particle swarm algorithm is used to randomly initialize particles in a target area, and each particle has four-dimensional parameters, including a group of heterogeneous UAVs. The three-dimensional spatial position of each drone and the usage of the drone; the multi-objective particle swarm algorithm is used to calculate the change speed of the three-dimensional position of the drone and update the three-dimensional position of the drone; based on the combination of discrete binary particle swarm algorithm, the calculation of each The amount of change in the usage of each drone of each particle and update the usage of each drone; and on this basis, the spread and mutation operations in the genetic algorithm are added to prevent the particle swarm optimization from falling into the local minimum prematurely. Optimal solution; through the combination of multi-objective particle swarm optimization, discrete binary particle swarm optimization, and genetic algorithm, the problem of deploying heterogeneous UAVs needs to be satisfied with network services.
Owner:ZHENGZHOU UNIV
A radio frequency front-end circuit and mobile terminal
ActiveCN109861735BSimple designShorten RF layout tracesSpatial transmit diversityEngineeringComputer science
The present invention provides a radio frequency front-end circuit and a mobile terminal. The circuit includes: a first double-pole double-throw switch; a first signal receiving circuit, which is connected to one of the first antenna and the second antenna through the first double-pole double-throw switch, and receives signals through the connected antenna; The second double-pole double-throw switch; the second signal receiving circuit is connected to one of the third antenna and the fourth antenna through the second double-pole double-throw switch, and receives signals through the connected antenna; the third double-pole The double-throw switch is connected with the first double-pole double-throw switch and the second double-pole double-throw switch respectively; the first radio frequency circuit is connected with the third double-pole double-throw switch, including: a signal receiving mode or a signal transmitting mode; the second The radio frequency circuit, connected with the third double-pole double-throw switch, includes: a signal receiving mode or a signal transmitting mode. The circuit design of the present invention is simple, and on the basis of realizing signal transmission and / or reception, the radio frequency layout and wiring can be shortened, thereby reducing path loss.
Owner:VIVO MOBILE COMM CO LTD
A radio frequency circuit and electronic equipment
ActiveCN111525933BTroubleshoot performance imbalancesImprove switching performanceRadio transmissionIndependent non-interacting antenna combinationsTransceiverRF module
Owner:VIVO MOBILE COMM CO LTD
A Broadband High Power Low Loss Ring Power Distribution Combiner
The invention provides a broadband high-power low-loss circular power allocation synthesizer which comprises a power allocation ring and at least one isolating ring, wherein the isolating ring is located on the outer portion of the power allocation ring. According to the technical scheme, the broadband high-power low-loss circular power allocation synthesizer is characterized in that low loss and broadband are achieved, and high amplitude and phase consistency exists between two branch circuits. The working principle of a micro-strip annular bridge is used, and therefore the problems of isolation resistance power capacity and insertion loss increase in a traditional Wilkinson power allocation synthesizer can be solved effectively.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
Communication signal transceiving component, terminal and signal transceiving method
Provided in the embodiments of the present invention are a communication signal transceiving component, a terminal and a signal transceiving method, relating to the field of network transmission. The transceiving component comprises: a common antenna, a first communication chip, a second communication chip, a coupler, and a switch module. The first communication chip and the second communication chip are connected to the coupler by means of the switch module. The coupler comprises a first branch and a second branch and is connected to the common antenna to transceive communication signals from the first communication chip and / or the second communication chip. The present invention solves the technical problem in the related art that a time-division mechanism, which needs to be utilized when a BT signal and a WLAN signal need to be transmitted simultaneously because the BT and the WLAN use in common the same antenna, may severely affect the data throughput rate of the WLAN, achieving the effect that two kinds of signals may be transmitted simultaneously to enhance the data throughput rate.
Owner:HUAWEI TECH CO LTD
Millimeter wave outdoor smart passive covering method
ActiveCN107682875AChange beam direction in real timeChange the number of beams in real timeRadio transmissionNetwork planningBeam directionEngineering
A millimeter wave outdoor smart passive covering method is provided. Direct irradiation coverage is applied to a direct irradiation area (21) and passive reflector (3) irradiation coverage is appliedto a shade area (22). A base station (1) and the passive reflector (3) are located in such a way that a base station (1) signal can reach a shade area (22) path (5) via the passive reflector (3) by reflections as few as possible and passing by a total distance as short as possible. The beam direction (61), the number, and the polarization direction (62) of reflection waves of the passive reflector(3) can be adjusted and changed in real time according to needs. The method reduces the path loss of large-scale millimeter-wave propagation, decreases a loss factor, improves the path loss of the shade area (22), improves the independence of a MIMO channel, can adjust the beam quantity and features of the shade area (22) according to needs, and is efficient in energy, wide in frequency band andlow in cost, and liable to fuse with conventional environment and buildings.
Owner:南京海得赛斯通信科技有限公司
A motherboard device for a triple rear camera mobile phone
ActiveCN110138941BReduce path lossReduce distanceTelephone set constructionsTelephoto lensLong-focus lens
The invention discloses a mainboard device of a three-rear camera mobile phone, which comprises: a PCB board; a through-hole area arranged at the right end of the PCB board, and a color lens and a telephoto lens are arranged on the through-hole area; The black-and-white area above the through-hole area, the black-and-white area is provided with a black-and-white lens; the antenna area is arranged above the black-and-white area; Antenna control chip; the color lens, the telephoto lens, the black and white lens and the antenna control chip are respectively electrically connected to the PCB board, and the antenna area is electrically connected to the antenna control chip. Using the above design, through the adjustment of the camera, the distance from the antenna to the control chip is greatly reduced, the path loss of the antenna is effectively reduced, and the component area of the PCB is increased, which can be effectively applied to mobile phones with more functions and higher integration. design.
Owner:深圳市福日中诺电子科技有限公司
Vehicle-mounted terminal system
InactiveCN111555766AReduce development costsReduce development difficultyAntenna arraysParticular environment based servicesIntelligent NetworkIn vehicle
The invention discloses a vehicle-mounted terminal system which comprises a wireless signal transceiving module which is arranged in a shark fin on a vehicle roof and comprises a plurality of antennas; a processing control module which is arranged in the vehicle roof, is positioned on the lower side of the wireless signal transceiving module and is connected with the wireless signal transceiving module through a Wilkinson power divider; and an in-car entertainment which is arranged on a center console in the vehicle and is connected with the processing control module through an optical fiber.According to the invention, the problems of high development cost, high development difficulty and difficulty in period control of the conventional intelligent networked automobile can be solved.
Owner:EVERGRANDE NEW ENERGY AUTOMOTIVE INVESTMENT HLDG GRP CO LTD
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