15results about How to "Improve antenna performance" patented technology

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.

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 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 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 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.

The utility model discloses a small -size base station antenna frame for disaster emergency, including substrate and the MxN antenna array integrated on the substrate, the antenna array is divided into a plurality of pxp sub -matrix that can work independently, and each sub -matrix contains pxp radiating unit and a plurality of radio frequency switches, and each radio frequency switch is connected two adjacent diagonal radiating unit respectively, and each sub -matrix back surface is provided with antenna rotation unit, the utility model divides the antenna array into a plurality of sub -array, adopts radio frequency switch control feed network, supports a variety of sub -array combination mode, and mode switching time reduces from minute level to millisecond level, and disaster response speed is greatly promoted. The utility model positioning accuracy enhances, compared with the traditional scheme >5m precision, adopt the multi -sub -array TDOA joint positioning error of utility model antenna structure <1m. In addition, the coplanar design can directly replace the existing base station antenna, need not structural reconstruction, and the compatibility is strong.

This invention discloses a 5G antenna for a mobile communication terminal and a mobile communication terminal. The 5G antenna includes a main radiating element and a parasitic element. The main radiating element includes a feed point, a feed point connecting segment connected to the feed point, and a first antenna stub and a second antenna stub respectively connected to both ends of the feed point connecting segment. The parasitic element is separated from the second antenna stub by a first isolation region. In this invention, by setting the first antenna stub and the second antenna stub separately in the main radiating element to adapt to the mid-high frequency band and low frequency band of 5G communication respectively, the antenna frequency band can be better distinguished for structural design, avoiding the problem of difficulty in balancing various frequency bands, thereby significantly improving antenna performance.

The present disclosure relates to a shell assembly and an electronic device, wherein the shell assembly comprises a camera decoration piece, the camera decoration piece comprises an annular decoration piece made of a metal material piece, and a feed point and at least two grounding points are arranged on the annular decoration piece in a spaced manner, the at least two grounding points comprise a first grounding point and a second grounding point, the annular decoration piece between the feed point and the first grounding point is used for radiating an antenna signal of a first frequency band, and the annular decoration piece between the feed point and the second grounding point is used for radiating an antenna signal of a second frequency band. In this way, the camera decoration piece can radiate antenna signals of two frequency bands, thereby further improving the utilization rate of the camera decoration piece and also facilitating the improvement of the antenna performance of the electronic device.