42results about How to "Improve antenna performance" patented technology

The invention discloses an ultra-wideband low-profile feed source loaded with a step medium, and relates to the field of ultra-wideband feed sources. The antenna comprises four log-periodic antennas, four groups of step dielectrics, dielectric cylinders, a reflection floor, a metal cavity and two feed baluns, the four log-periodic antennas are divided into two pairs which are orthogonally arranged, each pair comprises two log-periodic antennas which are oppositely arranged, the log-periodic antennas are fixed on the dielectric cylinder through screws, and an included angle is formed between the log-periodic antennas and the reflection floor; each group of stepped dielectric is formed by arranging twelve dielectric blocks in height stepped distribution, is positioned between the log-periodic antenna and the reflection floor, and clings to the reflection floor; the two feed baluns are orthogonally arranged, and each balun comprises a dielectric substrate, an index gradient microstrip line and a one-to-two power divider. The antenna is wide in frequency band, low in profile and suitable for serving as a primary radiator of a reflector antenna in the fields of satellite communication, radar detection, radio astronomy and the like.

An antenna system mounted on a vehicle according to an embodiment is provided. The antenna system comprises: a PCB on which electronic components are disposed; at least one radiator which is electrically connected to the PCB and is formed in a metal pattern having a predetermined length and width so as to transmit and receive signals; a bottom cover which is disposed below the PCB and consists of a metal plate having a slot area formed in an area corresponding to an area on which an antenna element is disposed; and a top cover which is coupled to the bottom cover and is configured to accommodate the PCB therein, wherein broadband operation is possible by means of the radiator and the metal plate having the slot area.

According to the electronic equipment, an antenna assembly comprises a radiator, a feed source and a first tuning circuit, the radiator comprises a first free end, a feeding point, a first grounding point and a second free end, the first free end and the feeding point are located on a first sub-frame, the second free end is located on a second sub-frame, and the first grounding point is located on the first sub-frame or the second sub-frame; the feed source is electrically connected with the feed point; the first tuning circuit is electrically connected to the radiator and has a first state and a second state; when the first tuning circuit is in a first state, the radiating body can form a first resonant mode supporting a first frequency band under excitation of the feed source, and main current of the first resonant mode is distributed between the first free end and the feeding point, and when the first tuning circuit is in a second state, main current of the first resonant mode is distributed between the second free end and the feeding point. The radiator can form a second resonance mode supporting the first frequency band under the excitation of the feed source, the main current of the second resonance mode is distributed between the feed point and the second free end, and the antenna performance of the electronic equipment is improved.

This disclosure relates to an antenna structure and a terminal device. The antenna structure includes: an antenna frame comprising: a conductive frame having a first frame and a second frame surrounding the first frame; the first frame having a gap; a circuit board assembly mounted on the second frame and connected to the first frame; the circuit board assembly being provided with an impedance component for adjusting the length of the antenna current path within the conductive frame. Embodiments of this disclosure enable improvements in antenna performance while reducing the impact on the device's appearance.

The invention discloses a miniaturized airborne communication antenna, which is characterized in that an active oscillator is arranged on the top layer of a double-sided PCB (Printed Circuit Board), the active oscillator comprises a rectangular microstrip line frame, two trapezoidal oscillators are arranged in the rectangular microstrip line frame, the bottom edge of each trapezoidal oscillator is connected with the short edge of the corresponding rectangular microstrip line frame, and the bottom edge of each trapezoidal oscillator is connected with the short edge of the corresponding rectangular microstrip line frame; an oscillator gap is reserved between the top edges of the two trapezoidal oscillators, and the top edges of the two trapezoidal oscillators are connected with a core wire and a ground wire of a coaxial antenna feeder arranged on the bottom layer of the double-sided PCB through metalized via holes. The invention also discloses a miniaturized airborne communication antenna array, a system and an unmanned aerial vehicle. According to the invention, through beam switching, coverage of a new antenna pattern is relatively comprehensive in a vertical plane and a horizontal plane, all spaces of the unmanned aerial vehicle in all directions can be basically completely covered, the antenna gain is far higher than that of a half-wave dipole antenna, and good antenna performance is provided for communication between the unmanned aerial vehicle and the ground and communication between unmanned aerial vehicles in an unmanned aerial vehicle group.

This utility model discloses a radiating arm, an antenna assembly, and an electronic device. The radiating arm includes a first radiating stub, a second radiating stub, and a current loop. The first radiating stub has a feed section. The second radiating stub is bent and connected to the first radiating stub, and has a grounding section spaced apart from the feed section. The current loop has a first through hole. The current loop is electrically connected to both the first and second radiating stubs, and at least a portion of the current loop is positioned close to the feed section. This radiating arm forms a current loop for gaining the radiating stub through structural optimization. When this radiating arm is applied to an antenna assembly and electronic device, the use of the current loop to gain the radiating stub can effectively improve its radiation performance.

The utility model provides an antenna assembly and electronic equipment, and relates to the technical field of electronic equipment. The antenna assembly comprises a radiation branch knot; a feed end; the matching circuit is electrically connected between the radiation branch knot and the feed end; the matching circuit comprises a first resonance circuit which comprises a first inductor, a first capacitor and a switch assembly. The switch assembly comprises a change-over switch and a plurality of tuning branches; the first capacitor is connected in parallel with the switch assembly; the first resonance circuit is used for generating resonance working in a first frequency band. By connecting the first capacitor beside the switch assembly in parallel, the equivalent capacitance influence of the switch assembly is eliminated, the frequency band range covered by the antenna assembly is increased, and the antenna performance is optimized.

This application provides a foldable terminal device, including a first feed source, and a first part and a second part that are foldable. The first part is configured with a first antenna element that is fed by the first feed source. The second part is configured with a second antenna element that is coupled to the first antenna element for coupled feeding when the foldable terminal device is folded. An operating frequency band of the second antenna element includes an operating frequency band of the first antenna element. The foldable terminal device provided in this application aims to provide a foldable terminal device with a simple structure and high antenna performance.

The present invention discloses a display device, comprising: a display panel, a heat dissipation film arranged on the side of the display panel away from the light emitting surface, and an antenna arranged between the display panel and the heat dissipation film and surrounding the display area of ​​the display panel; wherein the heat dissipation film comprises: a carbon nanotube layer, the orthographic projection of the carbon nanotube layer on the plane where the display panel is located at least covers the orthographic projection of the antenna. Since the carbon nanotube layer itself does not have the function of shielding signals, therefore, by at least arranging the carbon nanotube layer at the position corresponding to the antenna, the shielding effect of copper on the antenna signal can be effectively improved, thereby improving the antenna performance; and the carbon nanotube layer has good thermal conductivity, so that while improving the antenna performance, the heat dissipation performance of the display device can also be effectively guaranteed.

The invention provides an electronic device. A frame comprises a holding area and a lap joint area. The antenna assembly comprises a first radiator and a first signal source, the first radiator comprises a first radiation section, a second radiation section and a third radiation section, and the second radiation section comprises a first feeding point; the first signal source is electrically connected with the first feeding point and used for exciting a first resonance mode supporting a first frequency band to be formed on the first radiator, the first radiation section or the third radiation section comprises a sinking part, and the sinking part is arranged on the inner side of the lap joint area of the frame and is spaced from the lap joint area of the frame; a first resonance current of the first resonance mode is at least distributed in the sinking part and the second radiation section, at least part of the second radiation section is a holding area of the frame, and the second radiation section is used for forming medium loading of the first resonance mode when being held. According to the invention, absorption of a hand to electromagnetic waves transmitted and received by the antenna is reduced, and the antenna performance in a handheld scene is improved.

The invention discloses an antenna module and electronic equipment, and belongs to the technical field of communication. The antenna module comprises a first radiator, a metal floor and a feed source. The feed source is electrically connected with the first radiator; a first gap is formed between the metal floor and the first radiator; a first slot is formed in the metal floor; wherein the feed source is used for exciting a first current on the first radiator and exciting a first magnetic current at the first slot, the metal floor forms a second current on two opposite sides of the metal floor under the action of the first magnetic current, and the first current and the second current are consistent in phase.

The present disclosure relates to an antenna structure and a terminal device. The antenna structure comprises: a conductive frame, an impedance component, a first connecting member and a second connecting member; the conductive frame is divided into two frame areas; the first connecting member is connected with one of the frame areas and the impedance component respectively; the second connecting member is connected with the other frame area and the impedance component respectively; the impedance component is arranged near the division position of the conductive frame, and is used for tuning the antenna signal formed by the conductive frame. The embodiment of the present disclosure can reduce the influence of the division of the conductive frame on the antenna performance.

The present invention provides an electronic device, comprising a metal frame, wherein the metal frame is provided with a plurality of slits, wherein the plurality of slits separate the metal frame into a plurality of independent frame segments, wherein the plurality of frame segments are used as antenna bodies and support frequency bands of a plurality of communication standards; at least three frame segments support the 5G frequency band, and among the at least three frame segments, at least one frame segment simultaneously supports the MHB frequency band of LTE, and outside the at least three frame segments, at least one frame segment supports the MHB frequency band of LTE; wherein at least one frame segment supporting the MHB frequency band of LTE outside the at least three frame segments is used together with the at least three frame segments to implement the 5G NSA communication standard. The present invention also provides an antenna device. The present invention supports the MHB frequency band of LTE and the 5G frequency band simultaneously through at least one frame segment, thereby reducing the number of antenna bodies, and mainly implements the 5G NSA communication standard through the metal frame, thereby improving the antenna performance.

The invention relates to the technical field of electronic equipment, and particularly provides wearable equipment which comprises an antenna system, a conductive component and a screen assembly, the antenna system comprises an annular radiator, the radiator comprises at least one part of a middle frame of the wearable equipment and is electrically connected with a circuit board of the wearable equipment, and the conductive component is electrically connected with the circuit board of the wearable equipment. The conductive part is arranged on the side, away from the screen assembly, of the circuit board and electrically connected with the circuit board. In the embodiment of the invention, the conductive part is connected with the circuit board, so that the area of the reference ground of the circuit board is effectively increased, and the grounding performance of the antenna system is improved. When a human body wears the wearable equipment, the radiation electric field of the antenna can return to the conductive part better, the absorption ratio of the human body is reduced, and the antenna performance of the wearable equipment is improved. Particularly, for a low-frequency antenna, the human body can become a part of the antenna, and the effect of enhancing the performance of the low-frequency antenna is achieved.

The application discloses an electronic device, and belongs to the technical field of communication. The electronic device comprises a first feed source, a first conductive part and a first radiator with a first branch and a second branch; the first branch and the second branch are connected integrally, the second branch extends along a first direction, and the main body of the first branch extends in a second direction after being bent; the first end of the first branch and the second end of the first branch are grounded respectively, and the first end of the first branch faces the second branch; the first feed source is electrically connected with the first part of the first branch through the first conductive part; or the first feed source is electrically coupled with the first segment of the first branch through the first conductive part; the electrical length of the first branch is 1 / 2 times of a first wavelength, the electrical length of the second branch is 1 / 4 times of a second wavelength, the first wavelength is a wavelength corresponding to a satellite communication frequency band, the second wavelength is a wavelength corresponding to a first frequency band, and the first frequency band is a sub-frequency band with a higher frequency in the satellite communication frequency band or the first frequency band is slightly higher than the satellite communication frequency band.

This invention discloses an eigenmode analysis method based on periodic Green's functions and its application. The method is characterized by: obtaining the element structure model of the target element and performing triangular mesh generation; constructing RWG basis functions; obtaining the periodic Green's function and using the EWALD transform to decompose it into spatial and spectral parts; constructing an impedance matrix; decomposing the impedance matrix to construct generalized eigenvalue equations and solving for the eigenvalues, thereby obtaining the mode importance of the target element and completing the eigenmode analysis. The advantages are: by using the periodic Green's function, the coupling between the target element and other elements in the periodic structure is directly calculated, accurately reflecting the true modes under infinite periods; using the EWALD transform to decompose the periodic Green's function into spatial and spectral parts, and then performing convergence in the spatial and spectral parts respectively, followed by summing, greatly accelerates the convergence speed, thereby significantly reducing computational complexity and improving computational efficiency.

The embodiment of the utility model provides an intelligent watch, and belongs to the technical field of terminals. The intelligent watch comprises a metal watch frame, the metal watch frame comprises a first frame body and a second frame body, and the first frame body and the second frame body are insulated from each other; and a metal ornament, the first frame body and the metal ornament are connected through a conductor, and the first frame body and the metal ornament form a radiator of a first antenna of the smart watch. The metal ornament is insulated from the second frame body, and the second frame body forms a radiator of a second antenna of the smart watch. On the basis that a metal watch frame of the intelligent watch comprises two frame bodies, a metal ornament of the intelligent watch is combined, the first frame body and the metal ornament are connected through a conductor to form a radiator of a first antenna, and the second frame body serves as a radiator of a second antenna, so that antennas required by different performances are provided, and the antenna performance of the intelligent watch is improved.

The present invention provides a passive wireless temperature stress sensor applied to an isolation knife switch, comprising: an isolation knife switch contact finger base, an isolation knife switch contact finger, an antenna, a sensor base, a temperature stress sensitive element, a signal port, and a signal transmission line; the temperature stress sensitive element and the signal port are arranged together on the inclined surface of the sensor base; the sensor base is assembled at the root of the isolation knife switch contact finger; the sensor detection signal is transmitted to the antenna through the signal port and the signal transmission line, and is emitted in the form of electromagnetic waves through the antenna; the antenna is installed on one side of the isolation knife switch contact finger base. The passive wireless temperature stress sensor applied to the isolation knife switch provided by the present invention has excellent antenna performance, is easy to process, and has excellent temperature stress sensitive element performance. It can send temperature stress sensing data through the antenna with sufficient power using electromagnetic wave signals so that the reading device can stably receive and analyze it.

The utility model provides a miniature 4G cellular wireless communication camera antenna, which comprises a feed part and a grounding part, the grounding part comprises an antenna ground branch, and the feed part comprises a first low-frequency branch, a high-frequency branch and a second low-frequency branch; the first low-frequency branch is a linear branch, the second low-frequency branch is a C-shaped branch, the high-frequency branch is connected with the middle of the first low-frequency branch, the second low-frequency branch surrounds the high-frequency branch and is connected with the first low-frequency branch, and the antenna ground branch is an L-shaped branch. The antenna adopts a flexible printed circuit FPC, and the structure of the antenna is arranged on the FPC. A coaxial line is welded at a feed point of the antenna by using a first-generation ipex head. The camera provided by the utility model has wide communication bandwidth and good antenna performance, and the antenna is designed at the position of the camera base, so that a better antenna environment and an assembly environment can be obtained, and the product characteristics of convenience in assembly, excellent performance, stability and reliability are achieved.

The invention relates to an electronic device which comprises a middle frame, a circuit board and a conductive structure, the middle frame comprises a supporting part and a frame surrounding the supporting part, the frame is provided with a breaking joint, and the frame located on one side of the breaking joint forms a first antenna radiator; the circuit board is arranged on the supporting part, and an antenna clearance area is arranged on the circuit board; the conductive structure is arranged in the antenna clearance area, and the conductive structure is used for being coupled with the first antenna radiator. Therefore, the radiation capability of the first antenna radiator can be effectively improved, and the antenna performance of the first antenna radiator is improved, so that the communication performance of the electronic equipment is improved.

The satellite antenna oscillator comprises a vertical cylinder, a pair of first branches are arranged on the outer wall of the top end of the vertical cylinder in a left-right symmetry mode, a pair of second branches are arranged on the outer wall of the top end of the vertical cylinder in a front-back symmetry mode, a supporting arm is arranged on the inner wall of the top end of the vertical cylinder in a protruding mode, and a through hole is formed in the supporting arm in a concave mode; vertical grooves are concavely formed in the vertical cylinder on the two sides of the through hole and penetrate through the inner wall and the outer wall of the vertical cylinder. According to the oscillator, the antenna performance is improved through cooperation of the first branch knot, the second branch knot and the vertical cylinder, multi-frequency signals can be received, the overall structure is small, and cost and labor are reduced.

The application discloses an ultraband antenna array and an electronic device, and belongs to the technical field of electronic products. The antenna array comprises a first antenna unit, a second antenna unit and a third antenna unit, and a first distance and a second distance are smaller than a third distance; wherein the first distance is the distance between the first antenna unit and the third antenna unit, the second distance is the distance between the second antenna unit and the third antenna unit, and the third distance is the distance between the first antenna unit and the second antenna unit; wherein the phase centers of the first antenna unit, the second antenna unit and the third antenna unit deviate from the geometric centers.

The application discloses a frequency range determination method, a computer device and a computer readable storage medium, and belongs to the field of signal processing. The method comprises the following steps: acquiring a signal quality parameter of a medium frequency signal; determining a section with high antenna gain according to the acquired signal quality parameter, so as to determine a target frequency range. The application solves the problem that the sweep frequency bandwidth does not match the antenna bandwidth by adaptively adjusting a sweep frequency control signal, and improves the detection capability of the radar.

The utility model discloses a conformal antenna, which belongs to the technical field of microwave communication, and comprises at least two dielectric layers, a feed pin and conducting layers, the conducting layers are arranged on the upper surface and the lower surface of each dielectric layer, the conducting layers between two adjacent dielectric layers are tightly connected into a whole, the uppermost dielectric layer is provided with a through hole, and the feed pin is arranged in the through hole. The other dielectric layers are provided with side metalized via holes, one end of the feed pin is connected with the conductive layer of the uppermost dielectric layer, the other end of the feed pin sequentially penetrates through the through hole and the side metalized via holes and extends out of the lowermost dielectric layer, orthographic projections of the dielectric layers are overlapped, and the feed pin is connected with the conductive layer of the lowermost dielectric layer. Reamed holes are formed in the conductive layer on the periphery of the metalized via holes in the side edge of the dielectric layer and are formed in the conductive layer on the upper surface of the dielectric layer. According to the utility model, the space utilization rate of the antenna is improved, the maximum effective volume of the antenna is obtained, the gain and bandwidth of the antenna are improved, and signals of two frequency bands can be output through the same port.

The invention provides electronic equipment, a frame comprises a top edge, a first side edge, a bottom edge and a second side edge which are connected in sequence, and the first side edge comprises a finger overlapping area and a palm holding area; the antenna assembly comprises a first radiator and a first signal source, the first radiator comprises a first free end, a first feeding point and a first grounding end which are arranged in sequence, the first free end is located at the bottom edge, the first grounding end is located at the first side edge, and the first grounding end is located between a finger lap joint area on the first side edge and the bottom edge; the first signal source is electrically connected with the first feeding point so as to excite the first radiator to form a first resonance mode supporting a first frequency band, the first radiator further comprises a target radiation section, the target radiation section is at least partial strong current distribution section in the first resonance mode, at least partial target radiation section is arranged in the palm holding area of the first side edge, and the target radiation section is arranged in the palm holding area of the second side edge. And the target radiation section is used for forming medium loading of the first resonant mode under the holding of the palm. According to the invention, the antenna performance in a handheld scene can be improved.

The invention provides a reusable NFC steel wire seal and a monitoring system and method thereof, and belongs to the field of logistics safety and intelligent recognizing.According to the technical scheme, a circuit board and two lock heads with built-in funnel ball self-locking mechanisms are arranged in a shell, and a steel wire penetrates through the lock heads to form a conductive loop with a steel wire detection module; the circuit board executes a force-electricity dual-mode weighted discrimination algorithm, state determination is carried out by fusing real-time steel wire tension and loop current, and the number of use times is recorded during state switching; and the state and the number of times are sent to an external reader-writer through the NFC radio frequency circuit. According to the scheme, recycling of the seal body is achieved, violent shearing, soft damage and electrical attack behaviors are effectively recognized through force-electricity dual-mode fusion judgment, the characteristic of tamper-proof judgment is improved, and meanwhile the NFC communication performance is optimized through the double-face PCB layout.

This disclosure relates to an antenna module and a satellite terminal. The antenna module includes: an antenna dielectric layer; a radiator located on the antenna dielectric layer; and a feed assembly connected to the radiator for exciting the radiator to radiate two mutually perpendicular polarized waves. The antenna module of this disclosure generates two mutually perpendicular polarized waves, thereby enabling the antenna module to form circularly polarized radiation when transmitting and receiving wireless signals, thus improving the antenna performance of the antenna module while achieving an integrated antenna.

The embodiment of the application provides a kind of dual-frequency antenna based on hybrid radiation mode, it includes butterfly electric dipole unit, ground plate, dielectric substrate and feed part;Wherein, the butterfly electric dipole unit and ground plate are all set to the upper surface of dielectric substrate, the feed part is set to the lower surface of dielectric substrate;The butterfly electric dipole unit and ground plate are jointly provided with opening gap, and the opening gap is equivalent to magnetic dipole;The butterfly electric dipole unit includes two dipole arms and two connecting pieces, and the two dipole arms are connected to ground plate by two connecting pieces respectively;Two dipole arms are located at the two sides of opening gap respectively, and two connecting pieces are also located at the two sides of opening gap respectively.The dual-frequency antenna of the application realizes the function of low frequency omnidirectional radiation and high frequency directional radiation using planar structure, has good antenna performance, and the processing cost is low;And realize the wideband dual-frequency antenna performance and simplify the structure of antenna.

An antenna module mounted on a vehicle, according to an embodiment, is provided. The antenna module comprises: a PCB having a transmission line; a lower cover on which the PCB is arranged; an upper cover which is fastened to the lower cover so as to accommodate the PCB therein, and which has a metal plate formed in a partial region formed of a dielectric; a slot radiator, which radiates a radio signal through a slot region formed in the metal plate and a partial region of the upper cover; and a feeding structure, which transmits the radio signal to the slot radiator so that the radio signal of the transmission line formed on the PCB is radiated through the slot radiator.