34results about How to "Increase antenna bandwidth" patented technology

A broadband antenna includes a coupling loop and a number of radiation bodies. The coupling loop is electrically coupled to a chip and the chip records several pieces of data. The radiation bodies respectively form a number of resonance loops with the coupling loop for providing a number of resonance frequencies of the broadband antenna. The coupling loop can feed in signals for reading data in the chip according to the resonance frequencies.

The invention discloses a wideband monopole microstrip antenna. The wideband monopole microstrip antenna includes a dielectric substrate, a circular radiating patch, a parasitic circular ring radiating patch, a metal grounding plate and a coaxial line, wherein the circular radiating patch and the parasitic circular ring radiating patch are printed on the upper surface of the dielectric substrate, and the metal grounding plate is arranged at the lower surface of the dielectric substrate and is connected with the bottom end of the dielectric substrate; and feeding holes are formed in the dielectric substrate; and the radiating units with short-circuiting holes, namely, the circular radiating patch and the parasitic circular ring radiating patch, can generate two working modes (TM01 and TM02) and four resonant frequencies, and therefore, the bandwidth of the antenna can be effectively increased. The short-circuiting holes are adopted, and therefore, the equivalent inductance of the antenna can change, and the TM01 mode can be enabled; the parasitic circular ring radiating patch with short-circuiting holes is additionally adopted, so that the capacitance distribution of the antenna can be changed, and therefore, the novel resonant mode TM02 can be exited, and the band of the antenna can be expanded.

The present invention by propagates a traveling wave of electric current along a microstrip antenna structure rather than a standing wave. By loading an antenna with a series of capacitive gaps of the correct values, the shape of the electric current distribution can be tailored to suppress the resonant properties of the antenna, specifically the standing wave of electric current that normally forms along the antenna structure. A microstrip antenna having a “bulls-eye target” structure comprised of a center disk and concentrically larger capacitively coupled annular sections will tailor the shape of the electric current distribution to achieve a suppression of the resonant properties of the antenna, thereby increasing the antenna bandwidth.

The invention discloses a broadband end-fire antenna array for a millimeter wave communication system. A power division network is designed by using a substrate-integrated coaxial line (SICL), an electromagnetic dipole antenna with a broadband working range is selected as a radiating element, and a broadband and high-gain antenna array is achieved by adopting a planar L-shaped probe excitation antenna. The broadband power division network employing the SICL disclosed by the invention has a wider working bandwidth in a millimeter wave band in comparison with the power division network employinga substrate-integrated waveguide transmission structure design, and has lower losses in the millimeter wave band in comparison with the power division network employing a microstrip line and a coplanar waveguide transmission structure design. The end-fire antenna array disclosed by the invention has the advantages of wide impedance bandwidth and radiation pattern bandwidth.

The invention relates to a quadrangle feeding-based dual-layer waveguide gap near-field focusing array antenna, and relates to a waveguide gap antenna. The quadrangle feeding-based dual-layer waveguide gap near-field focusing array antenna comprises a lower-layer feeding waveguide and an upper-layer radiation waveguide, an incident wave sequentially passes through the feeding waveguide, a couplinggap and the radiation waveguide from a feeding port and is finally radiated to an external space by a radiation gap, the feeding port and the feeding waveguide are fed through a central hole from a back surface by employing a standard feeding wave, quadrangle feeding is employed to substitute traditional central feeding, a signal is extended to four antenna angles from the center by the feeding waveguide with four arms, uniform-amplitude and same-direction feeding is performed from two ends to a middle part, a PMC boundary can be formed in the center of the feeding waveguide, thus, a metal boundary is substituted, the size is reduced, and the design cost is reduced. The length of the feeding waveguide is 44.8 millimeters, the width of the feeding waveguide is 5 millimeters, and the heightof the feeding waveguide is 2 millimeters.

The invention discloses a radio frequency micro-electromechanical microstrip antenna, and belongs to the technical field of wireless communication. The radio frequency micro-electromechanical microstrip antenna comprises a metal frame and a microstrip antenna unit, wherein the microstrip antenna unit comprises a first adapter plate, a second adapter plate and a third adapter plate; metal shieldingstructures surrounding the central areas of the respective adapter plates are arranged on the three adapter plates, and the vertical interconnection of the metal shielding structures among the threeadapter plates is achieved by BGA interconnection structures; a first radiation patch is arranged on the front face of the first adapter plate; an air hole and a parasitic patch are arranged on the second adapter plate; a second radiation patch is arranged on the front face of the third adapter plate, and a reflecting surface s arranged on the back surface of the third adapter plate; and a feedinghole and a grounding hole are formed in the central area of the third adapter plate. The radio frequency micro-electromechanical microstrip antenna disclosed by the invention has the characteristicsof low profile, high gain and high bandwidth, and can solve the problems of narrow bandwidth and low gain of a low-profile microstrip antenna of a semiconductor substrate with a high dielectric constant.

A deformed dipole is suggested with trace elements configured for wideband LTE and GPS operation. The deformed dipole comprises a first dipole conductor disposed on a first surface and first side of the circuit board and a second dipole conductor disposed on an opposite surface and opposite side of the circuit board.

The invention discloses a small-size UWB (ultra wide band) microstrip antenna applied in the field of railway communication, and the microstrip antenna comprises a substrate, a radiation patch locatedon the front surface of the substrate, and a correction ground which is located on the back surface of the substrate. The central axis of the radiation patch and the central axis of the correction group are located on the same straight line, and the radiation patch sequentially comprises a radiator, a gradual change part and a feed part, wherein the radiator, the gradual change part and the feedpart are sequentially connected. The radiator comprises a first part and a second part, which are connected with each other. The second part is shaped like T, and the gradual change part is an integrated body of a rectangle and an inverted isosceles trapezoid. The feed part is a fine and long rectangle, and the correction ground is concave. The antenna solves the problems that an antenna used in the field of railway communication is bigger in size, is difficult for installation and integration, is narrower in communication band, is poor in accuracy and is lower in gain.

The invention discloses an antenna radiation device. The antenna radiation device comprises: a radiation unit comprising at least one pair of oscillator arms provided with hollow regions and mutuallyarranged at intervals; at least one feed body, wherein each feed body is configured to perform feed for the corresponding pair of oscillator arms; a Balun supporting structure arranged at the lower portion of the radiation unit, configured to support the radiation unit and connected with the radiation unit; and at least one feed cable having one section at the top portion divided into a first subsection, a second sub section and a third sub section in order from top to bottom, wherein an inner conductor of the first sub section of the feed cable is naked and is connected with the corresponding feed body, a dielectric layer of the second sub section of the feed cable is naked, and an outer conductor of the third sub section of the feed cable is naked and is connected with the Balun supporting structure. The antenna radiation device is better in bandwidth performance and low in production cost.

The invention provides a coupling structure Applied to a wireless communication device. The wireless communication device comprises a first grounding unit, a second grounding unit and an antenna. Thecoupling structure is arranged between the first grounding unit and the second grounding unit. The coupling structure comprises a first coupling part, a second coupling part and a third coupling part.The first coupling part, the second coupling part and the third coupling part form a filter. The antenna receives and/or transmits wireless signals of a first frequency band and a second frequency band, and the filter blocks the signals of the first frequency band between the first grounding unit and the second grounding unit and allows the signals of the second frequency band to pass through. The invention further provides a wireless communication device with the coupling structure.

The invention discloses a low-profile omnidirectional scanning end-fire antenna array, which can realize omnidirectional scanning of the azimuth plane when the beam points to the end-fire direction. The relative bandwidth of the central unit of the array whose VSWR is less than 2 is greater than 20%, and the profile height is about 0.054λ ₀ ,λ ₀ is the center frequency wavelength. The basic structure of the antenna unit includes: cylindrical feeding probe (1); upper dielectric substrate (2); lower dielectric substrate (3); top metal patch loading structure (4); middle inner metal patch loading structure ( 5); the middle outer ring metal patch loading structure (6); the floor (7); the metallized blind hole (8) connecting the top layer metal patch loading and the middle outer ring metal patch loading; connecting the middle outer layer The layer ring metal patch is loaded with the metallized through hole (9) of the subfloor; the middle layer metal line structure (10) connecting the metallized blind hole and the metallized through hole.

A millimeter wave antenna disclosed by the present invention comprises four layers of printed circuit boards and three layers of prepreg layers. The printed circuit boards and the prepreg layers are alternately stacked, the upper and lower end faces of the printed circuit boards are both provided with copper-clad layers, and the top of the millimeter wave antenna is provided with a plurality of rectangular horn antenna units arranged in rectangular grids. A rectangular quasi coaxial feed-coaxial feed-band ground coplanar waveguide feed three-stage feed structure is adopted, a feed line is led out to the back surface of the millimeter wave antenna, and various metallized through holes are formed in the millimeter wave antenna; the invention provides a semi-open two-stage rectangular horn antenna structure based on four layers of PCBs, and adopts a rectangular quasi coaxial feed-coaxial feed-band ground coplanar waveguide feed GCPW three-stage feed structure to realize antenna back feed.

The double-ridge horn antenna comprises a horn shell, a waveguide section, an upper ridge, a lower ridge and a coaxial feeder line, the bottom end of the horn shell is connected with the waveguide section, the upper ridge and the lower ridge are fixed to the inner walls of the two opposite side walls of the horn shell respectively, the upper ridge and the lower ridge are the same in structure, and the coaxial feeder line is arranged between the upper ridge and the lower ridge. A ridge line of the waveguide section comprises a straight line section and a curve section, the curve section adopts a cubic Bezier curve, the coordinate value of a control point of a tail end point of the curve is larger than that of a tail end point of the curve, the coaxial feeder line penetrates through the top end of the waveguide section, an inner conductor and an outer conductor of the coaxial feeder line are connected with an upper ridge and a lower ridge respectively, and the waveguide section is of a cubic structure. A wedge-shaped structure cavity which is integrally formed and manufactured is formed in the body; the widths of the upper ridge and the lower ridge gradually change from EF to EH in the length direction of the ridges. Through the unique design of the antenna form and structure, the problems of antenna frequency bandwidth and directional diagram bandwidth are solved, the antenna gain is greatly improved, and the structure is relatively simple.

The invention provides an antenna. The antenna comprises an antenna radiation unit, a grounding unit and a feed unit, wherein the antenna radiation unit is provided with two linear grooves and a plurality of curved grooves, the two linear grooves are perpendicular to each other and penetrate through the antenna radiation unit, the antenna radiation unit is divided into four sub-antenna radiation units by the two linear grooves, and the plurality of curved grooves are distributed at the periphery of the antenna radiation unit at equal intervals and are used for dividing current lines generatedby the four sub-antenna radiation units. The beneficial effects of the invention are that the antenna radiation unit is provided with the two linear grooves and the plurality of curved grooves, thereby increasing the resonance path, and expanding the bandwidth of the antenna; and the current on the antenna radiation unit can be ensured to flow along the orthogonal direction, and the isolation degree between ports is improved.

The invention provides a miniaturized dual-band antenna, which comprises a first dipole arm and a second dipole arm which are symmetrical to each other, and a dipole formed by the first dipole arm and the second dipole arm is used for generating a first resonance point; the first dipole arm and the second dipole arm are respectively provided with a first U-shaped groove, the two first U-shaped grooves are mutually symmetrical, openings of the two first U-shaped grooves are opposite, the first U-shaped grooves are used for generating a second resonance point, and the frequency of the first resonance point is different from that of the second resonance point; the two ends, close to each other, of the first dipole arm and the second dipole arm are connected with the feed structure. According to the dual-frequency antenna, a novel dual-frequency structure is adopted, a plurality of slot combinations can be loaded to realize broadband matching at a high frequency band, meanwhile, the dual-frequency antenna has the advantages of miniaturization and high radiation efficiency, and the requirement of a Wifi 6E frequency band can be well met.