11 results about "Antenna miniaturization" patented technology

This invention relates to the field of antenna technology, and particularly to a miniaturized circularly polarized antenna with a wide axial ratio and wide beamwidth. The antenna includes a dielectric substrate, a circular radiating patch unit, metal shorting posts, a coaxial differential feed structure, and a metal ground plane. The circular radiating patch unit consists of a pair of orthogonal fan-shaped cross-printed dipoles. A slot structure is added in the middle along the X-axis to divide the radiator into left and right parts, and three metal shorting posts are added to the end of each fan-shaped cross-printed dipole structure. The feed structure is a differential-feed coaxial cable, with its inner and outer conductors contacting the left and right halves of the circular radiating patch unit, respectively. Simultaneously, due to the slight difference in curvature between the two orthogonal fan-shaped printed dipoles, a phase difference is formed between the pair of orthogonal modes of the circular radiating patch unit, ultimately achieving circularly polarized radiation of the antenna. A metal short-circuit post is applied to the electric field zero of a conventional printed dipole, forming a new half-mode operating mode at low frequencies. Simultaneously, the slot structure improves the impedance characteristics of the half-mode, enabling antenna miniaturization. Due to the radiation contribution of the metal short-circuit post in the horizontal direction, the axial ratio beamwidth of this circularly polarized antenna is significantly extended. This application exhibits excellent forward radiation characteristics, along with miniaturization, a wide axial ratio beamwidth, simple structure, low cost, and ease of fabrication.

The application discloses a series feeding directional pattern shaped patch antenna, which is a compact, low-cost, high-gain and arbitrary beam shape realizable series feeding antenna, and achieves the purpose of miniaturization of the shaped antenna. The antenna comprises a dielectric substrate, a feeding line, a plurality of radiation patches and a metal grounding plate. The dielectric substrate comprises oppositely arranged top and bottom surfaces; the feeding line and the radiation patches are attached to the top surface of the dielectric substrate; and the metal grounding plate is attached to the bottom surface of the dielectric substrate. The plurality of radiation patches are distributed along the feeding line, and a slot structure one is formed on the radiation patches; and a slot structure two is formed at a set position of the feeding line. The application realizes the accurate control of the amplitude and phase of the unit through the special design of the series feeding antenna and the radiation unit, so as to achieve the purpose of realizing arbitrary beam shaping of the microstrip traveling wave series feeding antenna.

This utility model discloses a miniaturized wideband beam millimeter-wave antenna, including an radome, an antenna cavity, and a mounting component. The radome is fixedly mounted on the antenna cavity via the mounting component. The antenna cavity includes a circular waveguide with cylindrical grooves around its periphery, giving the antenna a wide beam characteristic within the operating frequency band and improving the antenna pattern in the low-frequency band. The radome includes a matching medium located inside the circular waveguide to extend the low-frequency operating bandwidth, thereby ensuring a gain greater than -0.5 dBi within a ±60° range in the 26 GHz to 40 GHz operating frequency band. Filling the circular waveguide opening with the matching medium reduces the diameter of the circular waveguide, achieving antenna miniaturization. Furthermore, the built-in radome reduces manufacturing costs, and mounting it externally to the equipment chassis avoids the influence of the internal structure of the chassis on performance, thus improving the antenna pattern.

The application discloses a medium lens, a radiation unit and a base station antenna, the medium lens is arranged above a vibrator, and the medium lens comprises a spherical body and a support; a beam adjustment cavity is constructed in the spherical body; the upper end of the support is connected with the spherical body, and the lower end of the support is used for fixing; the spherical body and the beam adjustment cavity are configured to: different phase compensations are performed on electromagnetic waves incident in different directions, so that the beams are focused; electromagnetic wave phase compensation and beam focusing are realized through the cooperative design of the spherical body and the beam adjustment cavity, the structural strength, the manufacturing process and the electromagnetic performance are taken into account at the same time, the gain and the comprehensive performance of the base station antenna are significantly improved, and the development requirements of 5G / 6G base station antenna miniaturization, low cost and high consistency are adapted.

This application relates to the technical field of antennas, and in particular to a miniaturized low-frequency loop antenna, comprising a loop frame made of a non-magnetic insulating material, a loop winding cavity formed on the loop frame, and a plurality of partition plates spaced axially on the loop frame, the partition plates being coaxially disposed within the loop winding cavity, dividing the loop winding cavity into a plurality of winding slots arranged axially, with wire passages provided on the partition plates, and adjacent winding slots connected by the wire passages; a magnetic layer equal in number to the number of winding slots and correspondingly disposed, and the magnetic layers forming a surrounding magnetic circuit with an air gap around the winding slots; an excitation coil including winding segments, the number of winding segments equal to the number of winding slots, one winding segment wound in a corresponding winding slot and located within the surrounding magnetic circuit, and adjacent winding segments electrically connected in series by connecting wires passing through the wire passages. This application can meet the requirements of antenna miniaturization and reliability in practical applications.

The application provides a low-profile miniaturized dual-band antenna based on LC resonance loading, relates to the technical field of microstrip antenna structure design, and comprises a metal floor, a dielectric plate, a radiation structure, an LC resonance structure and a feeding structure, the dielectric plate is fixedly arranged above the metal floor; the radiation structure is arranged above the dielectric plate, the radiation structure is composed of coaxial metal circular patches, a plurality of through holes are arranged on the radiation structure; the LC resonance structure is arranged in the through hole of the radiation structure; the feeding structure is arranged on the center line of the radiation structure, and the top end of the feeding structure penetrates through the dielectric plate and is connected with the radiation structure. The low-frequency antenna miniaturization and low-profile problem of the traditional low-frequency antenna are overcome, the size is significantly reduced, and the dual-band working capacity and good radiation performance are maintained.

This invention provides a millimeter-wave broadband packaged antenna structure, comprising a packaging substrate composed of alternating stacked metal layers and dielectric layers. Multiple metal layers have vertically aligned center-gap regions. A driving patch, a microstrip line matching segment, and a stripline are sequentially connected and aligned along the signal transmission path. A parasitic patch, parallel to and vertically aligned with the driving patch, is located in an adjacent metal layer directly above it. These two patches are not directly electrically connected but are fed through electromagnetic field coupling, allowing the driving patch and parasitic patch to operate at similar but different resonant frequencies, forming a dual-resonance operating mode. This effectively expands the antenna impedance bandwidth. Stripline shielding holes are provided on both sides of the stripline, and antenna shielding holes are arranged around the edge of the gap regions to suppress signal leakage and cavity resonance. This invention replaces the traditional coplanar or slotted method with a vertically stacked coupling structure, achieving antenna miniaturization while significantly improving bandwidth, and enhancing the design freedom of impedance matching through the microstrip line matching segment.

The utility model provides a PIFA antenna combination device, including substrate and a plurality of PIFA antennas of being located on the substrate, PIFA antenna includes antenna bottom plate, two first radiating arms, a second radiating arm, a first connecting piece and a second connecting piece, the first connecting piece connects two first radiating arms, and two first radiating arms are respectively located in the both sides of first connecting piece and are centrally symmetric with first connecting piece, and two first radiating arms are arranged in parallel with antenna bottom plate, the other side of two first radiating arms is connected with second connecting piece, and second connecting piece extends to antenna bottom plate direction and is bent with the extension piece parallel with antenna bottom plate, and the extension piece extends and exceeds the end of first radiating arm, and the extension piece connects second radiating arm, and second radiating arm is arranged perpendicularly with antenna bottom plate, the utility model can reduce the interference between first radiating arm and second radiating arm, reduces the length of resonant cavity, can reduce the space occupation, is favorable to antenna miniaturization.

The application discloses a compact dual-fed Vivaldi antenna and belongs to the electromagnetic field and microwave technology field. The antenna is composed of upper and lower two radiation units which are printed on the same dielectric substrate and are centrally symmetrical about a boundary surface. The upper radiation unit comprises a feeding structure and two radiation patches. The contour line of the radiation patch is composed of a main exponential gradual change line, a secondary exponential gradual change line and a cosine type outer contour line. The cosine type outer contour line is used for parameterized slotting treatment of the radiation patch. The radiation patches of the upper and lower radiation units can be overlapped and electrically connected. The microstrip lines of the feeding structures of the two radiation units share the same ground plate. Through the dual-fed central symmetrical design and the parameterized and differentiated cosine type slotting mode, the application improves the radiation factor and the design freedom of the antenna and simultaneously realizes the compact layout, can solve the technical problems of the miniaturization of the Vivaldi antenna and the low aperture utilization rate of the Vivaldi antenna array, is suitable for array antenna arraying, and simultaneously reduces the processing and use costs.

This invention discloses a low cross-polarization antenna based on deep learning-optimized design. The antenna employs a differential feed structure with an H-shaped coupling slot and vertical metal struts to suppress cross-polarization, eliminating the need for an external single-ended to differential converter. It expands bandwidth and stabilizes gain through a double-T-shaped matched short-circuit structure. A highly integrated, miniaturized antenna is achieved using an embedded vertically stacked differential excitation architecture. Optimization is performed using an antenna performance mapping model constructed from a CNN-Transformer hybrid neural network. The training process is optimized using simulated annealing, and optimal structural parameters are selected through multi-objective reverse design. The performance of the optimization method is finally verified through full-wave electromagnetic simulation. This invention combines antenna physics with a deep learning model to achieve synergistic optimization of antenna impedance, bandwidth, and gain, addressing the design requirements for balancing multiple antenna performance indicators. The designed antenna features low cross-polarization, stable gain, and miniaturization.