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9 results about "Whip antenna" patented technology
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A whip antenna is an antenna consisting of a straight flexible wire or rod. The bottom end of the whip is connected to the radio receiver or transmitter. The antenna is designed to be flexible so that it does not break easily, and the name is derived from the whip-like motion that it exhibits when disturbed. Whip antennas for portable radios are often made of a series of interlocking telescoping metal tubes, so they can be retracted when not in use. Longer ones, made for mounting on vehicles and structures, are made of a flexible fiberglass rod around a wire core and can be up to 35 ft (10 m) long. The length of the whip antenna is determined by the wavelength of the radio waves it is used with. The most common type is the quarter-wave whip, which is approximately one-quarter of a wavelength long. Whips are the most common type of monopole antenna, and are used in the higher frequency HF, VHF and UHF radio bands. They are widely used as the antennas for hand-held radios, cordless phones, walkie-talkies, FM radios, boom boxes, and Wi-Fi enabled devices, and are attached to vehicles as the antennas for car radios and two-way radios for wheeled vehicles and for aircraft. Larger versions mounted on roofs and radio masts are used as base station antennas for police, fire, ambulance, taxi, and other vehicle dispatchers.
Vehicle-mounted antenna servo mechanism system and communication vehicle
PendingCN122267499AAntenna supports/mountingsAntenna adaptation in movable bodiesRemote controlIn vehicle
A kind of vehicle antenna servo mechanism system, including servo control machine case and the turntable mechanism, whip antenna down mechanism and lifting rod controlled by servo control machine case;The turntable mechanism includes antenna servo platform base and two-dimensional servo turntable;Three two-dimensional servo turntables are provided on the antenna servo platform base, and three two-dimensional servo turntables are respectively installed on antenna servo platform base by flat plate antenna azimuth turntable;Each two-dimensional servo turntable is connected with flat plate antenna;The output end of the whip antenna down mechanism is connected with whip antenna;The servo system controls the motor of two-dimensional servo turntable and realizes the azimuth and pitch movement of flat plate antenna by forward and reverse rotation, and realizes the down movement of whip antenna by controlling the motor of whip antenna down mechanism and realizing the down movement of whip antenna.The system has CAN remote control function by time sequence control, and can realize integrated multiple types of antenna or multiple antenna to be deployed or withdrawn according to different azimuth, pitch angle needs by one key.
Owner:LIUZHOU CHANGHONG DIGITAL CONTROL MACHINE TOOL
Wireless communication device, control circuit and related system for scene under mine
The invention relates to the technical field of under-mine robot control, in particular to a wireless communication device for under-mine scenes, a control circuit and a related system. Wherein the wireless communication device is used for carrying out signal relay between the underground robot and the control terminal. The wireless communication device comprises a repeater packaged in a spherical antenna shell, and the spherical antenna shell is provided with N whip-shaped antennas in the radial direction of the spherical antenna shell. The N whip-shaped antennas are uniformly distributed on the spherical antenna housing, and the whip-shaped antennas are of a flexible springback structure. According to the whip antenna, the communication base station can ensure normal signal receiving no matter where the communication base station is located, and internal information transmission is optimized, so that the optimal communication effect is achieved.
Owner:SHANDONG GUOXING SMARTECH CO LTD +1
Multi-band multi-port outdoor whip antenna with coupler
The utility model relates to a multi-band multi-port outdoor whip antenna with a coupler, which comprises a connector, a chassis and an antenna shell, and the antenna shell comprises a shell, a sleeve and a top cover which are fixed together. The antenna assembly comprises a first mounting plate, a coupler, a plurality of first 2G oscillator arrays, a first 2G oscillator array parasitic piece, a plurality of second 2G oscillator arrays, a second 2G oscillator array parasitic piece, a third 2G oscillator array parasitic piece, a second mounting plate, a 3G feed panel, a first 3G oscillator, a second 3G oscillator and a 3G oscillator parasitic piece. According to the utility model, the coupler is applied, the radiation interference can be reduced, the communication capability and capacity are effectively improved, the directional antenna and the omnidirectional antenna are integrated, and the outdoor coverage is facilitated.
Owner:GATRONICS ELECTRONICS WUXI
Carbon fiber whip antenna structure and forming method
ActiveCN116505223BLower the resistance valuereduce adverse effectsAntenna supports/mountingsRadiating elements structural formsFiberCarbon fibers
The present application relates to whip antenna technical field, specifically to carbon fiber whip antenna structure and forming method. The existing carbon fiber whip antenna conduction performance is poor, the resistance value is large, the radiation efficiency is low. The carbon fiber whip antenna structure includes first metal joint, carbon fiber tube and second metal joint and the conductive wire connecting two metal joints. Its forming method is that the first metal joint and the second metal joint are installed at both ends of the mold; carbon fiber prepreg is laid; the conductive wire is wound; carbon fiber prepreg is laid again; the antenna outer surface is wrapped with metal mesh; the metal mesh is wound and fixed with the conductive wire; the connecting part of the metal mesh and the first metal joint and the second metal joint is wound with carbon fiber prepreg respectively; compaction and solidification; demolding. The carbon fiber whip antenna has good conduction performance, small resistance value, high resistance radiation efficiency, light structure quality, excellent mechanical properties, fatigue resistance, corrosion resistance, large power bearing, high radiation efficiency, long service life, high efficiency of the workpiece.
Owner:SHAANXI TIANYI ANTENNA
A broadband high-gain whip antenna
This application provides a broadband high-gain whip antenna, belonging to the field of antenna communication technology. The radome contains a radiating metal whip, which is a multi-segment metal tubular structure. Multiple isolators are arranged between these segments. Two completely independent antennas within each isolator are integrated into a common rod structure. A choke matching device is installed within the antenna base, and the bottom of the base houses a first antenna connector and a second antenna connector. Therefore, by designing isolators to change the length of the radiating whip, the operating frequency of the antenna is matched to the length of the radiating whip. Increasing the length of the radiating whip in the low-frequency band increases gain, while reducing the length in the high-frequency band prevents radiation pattern distortion, thus reducing gain. This improves the low-frequency gain and reduces the gain reduction problem caused by high-frequency pattern distortion.
Owner:CHONGQING HUAWEI IND GRP
Ship whip antenna fixing device
PendingCN121282607AAntenna supports/mountingsRadiating elements structural formsWhip antennaMechanical engineering
The ship whip-shaped antenna fixing device comprises a bottom fixing rod, and the top of the bottom fixing rod is provided with a disc-shaped adapter plate; the bottom surface of the disc-shaped adapter plate is vertical to the top of the bottom fixing rod, and an antenna mounting rod is vertically arranged on the top surface of the disc-shaped adapter plate; and the antenna mounting rod is used for mounting a ship whip-shaped antenna. Compared with other types of ship whip-shaped antenna fixing devices, the ship whip-shaped antenna fixing device adopts the sawtooth-shaped bent plate, so that the friction force of a mounting contact surface is increased, and the antenna mounting is extremely firm; compared with other types of devices, the device is fixed through a disc-shaped adapter plate bolt, and disassembly, assembly and maintenance are convenient.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD
A passive positioning reconnaissance system and method based on a magnetoelectric antenna and multi-sensor and micro unmanned aerial vehicle cooperation
The application belongs to the field of unmanned aerial vehicles, and discloses a passive positioning reconnaissance system and method based on a magnetoelectric antenna and multiple sensors and a micro unmanned aerial vehicle. The magnetoelectric antenna is arranged at the bottom center of the unmanned aerial vehicle platform, and the magnetoelectric antenna is composed of a piezoelectric layer and a magnetostrictive layer. A damping structure is arranged between the magnetoelectric antenna and the platform. A multiple sensor module is integrated inside the platform, including a GPS, an inertial sensor, a barometer and a magnetometer, for real-time solving of the own pose. A GPS antenna, a whip antenna and a sleeve monopole antenna are arranged on the top of the platform, the arm and the landing gear respectively, forming a spatial staggered layout. In operation, the magnetoelectric antenna captures target electromagnetic signals, combines the own pose obtained by the multiple sensors and the environment image collected by a high-definition camera, and transmits the signals to the ground end for fusion and solving of the target position. The spatial layout of the antenna makes the isolation degree better than -35 dB, solving the electromagnetic compatibility problem. The damping structure makes the vibration transmission rate as low as 0.04, ensuring signal stability.
Owner:XIDIAN UNIV
UHF ultra wide band omnidirectional communication antenna based on medium filling
PendingCN121416849ASimultaneous aerial operationsAntenna supports/mountingsUltra-widebandCommunications system
The invention relates to the technical field of radio frequency antennas. The UHF ultra wide band omnidirectional communication antenna comprises a matching transition structure and a radiation whip-shaped structure which form a whip-shaped antenna, the radiation whip-shaped structure is a metal cylinder structure, the front end of the radiation whip-shaped structure is coaxially connected and fixed with the matching transition structure, the front end of the matching transition structure is connected and fixed with a feed connector, and the feed connector is connected and fixed with the radiation whip-shaped structure. The feed connector penetrates through the matching floor and is fixed at the central position of the matching floor, a coupling sleeve is arranged at the circumferential position of the matching transition structure on the matching floor, and the inner ring of the coupling sleeve and the radiation whip-shaped structure are filled with filling media. The ultra-wideband whip antenna can effectively solve the limitation that the impedance bandwidth of a common quarter-wavelength whip antenna with the voltage standing wave ratio (VSWR) smaller than 3 is only about 30%, has the characteristics of ultra wideband and high reliability, greatly improves the working stability of the antenna in an air environment, realizes the ultra-wideband characteristic of the whip antenna, and can be widely applied to an omnidirectional communication system.
Owner:GUIZHOU AEROSPACE NANHAI SCI & TECH
Impedance matching method, device and system of telescopic antenna and wireless communication terminal
PendingCN121097375AAntennas earthing switches associationTelescopic elementsControl signalWhip antenna
The invention provides an impedance matching method, device and system of a telescopic antenna and a wireless communication terminal, and belongs to the technical field of wireless communication, and the method comprises the steps: determining the real-time length of the telescopic antenna; determining a real-time adjustment parameter of the impedance matching circuit based on the real-time length; and sending a control signal to the impedance matching circuit based on the real-time adjustment parameter, wherein the control signal is used for adjusting the characteristic impedance of the telescopic antenna. The real-time adjustment parameter of the impedance matching circuit is adjusted according to the real-time length of the telescopic antenna, so that the characteristic impedance of the telescopic antenna is adjusted, it is ensured that the characteristic impedance of the telescopic antenna is always matched with the characteristic impedance of a radio frequency system, and the communication effect of the telescopic antenna is effectively improved.
Owner:BEIJING GUODIAN GAOKE TECH CO LTD