34results about How to "Realize omnidirectional radiation" patented technology

The invention discloses a dual-polarized indoor distributed antenna which comprises a vertically polarized omnidirectional radiation unit, and a horizontally polarized omnidirectional radiation unit, wherein the horizontally polarized omnidirectional radiation unit is provided with a plurality of ridge horn oscillators, and the horizontally polarized omnidirectional radiation unit and the vertically polarized omnidirectional radiation unit are arranged coaxially and arranged at an specific interval in the axial direction. Therefore, the consistency of all frequency points in the main raditiondirection of the horizontally polarized omnidirectional radiation unit and the vertically polarized omnidirectional radiation unit is guaranteed, the dual-polarized indoor distributed antenna can be possibly applied in polarity diversity of MIMO (multiple input and multiple output), the problem of orthogonal isolation of the horizontally polarized omnidirectional radiation unit and the verticallypolarized omnidirectional radiation unit is effectively solved, and the non-relevant requirement of an MIMO technology on the antenna is met.

The invention discloses a compact type conformal PIFA array antenna working on a UHF frequency band. The compact type conformal PIFA array antenna working on the UHF frequency band is characterized by comprising a plurality of small-scale inverted-F-shaped antenna units, a horizontal antenna array which is composed of the inverted-F-shaped antenna units, a feed network and working frequency adjusting branches, the compact type conformal PIFA array antenna is printed on a flexible dielectric slab, and finally the flexible dielectric slab is bent and is arranged on the outer side face of a dielectric cylinder in a conformal mode to form a conformal radiator so as to achieve omnidirectional radiation. Repeated 90-degree bending operation of the inverted-F-shaped antenna units is adopted by the compact type conformal PIFA array antenna to achieve a low profile of the compact type conformal PIFA array antenna working on the UHF frequency band, and the overall height of the compact type conformal PIFA array antenna working on the UHF frequency band is about 0.06 lambda, wherein the lambda represents the air wave length. Due to the fact that the compact type conformal PIFA array antenna is arranged on the outer side face of the dielectric cylinder in a conformal mode, the sectional area of the compact type conformal PIFA array antenna can be reduced, and the compact type conformal PIFA array antenna can be installed in a narrow space. Due to the fact that the advantages that the inverted-F-shaped antenna units are convenient to manufacture, high in accuracy and low in cost are made full use of by the compact type conformal PIFA array antenna, miniaturization and the low profile of the compact type conformal PIFA array antenna working on the UHF frequency band are achieved, and high gain and the good omnidirectional radiation characteristic are achieved.

A small-size omnidirectional broadband dual-polarized MIMO antenna is composed of a horizontal polarization unit and a vertical polarization unit, wherein the horizontal polarization unit and the vertical polarization unit perform independent electric feeding, wherein the horizontal polarization unit is composed of four printed arc-shaped dipoles, a broadband balance-unbalance feed network, four arc-shaped parasitic wires and four double-L-shaped parasitic wires. The vertical polarization unit is composed of a discone, a circular sleeve and a grounded top loading planar ring. The working frequency band of the horizontal polarization unit is 1.7-2.8GHz; 48.9% relative bandwidth and a stable gain of 2.0-2.35dBi can be realized. The working frequency band of the vertical polarization unit is 1.68-2.72GHz; 48.9% relative bandwidth and a stable gain of 2.0-3.5dBi can be realized. Furthermore isolation degree between two radiation units is 25dB. The cross polarizations of the two radiation units are smaller than 20dB. According to the antenna, a horizontal radiation unit has a planar structure and a 50-ohm coaxial cable is utilized for performing electric feeding, and the dimension of the horizontal radiation unit is smaller than 100*100mm<2>; a vertical radiation unit has a discone structure and a 50-ohm coaxial cable is utilized for performing electric feeding, and the size of the vertical radiation unit is smaller than 84*84*22 mm<3>. The broadband dual-polarized omnidirectional MIMO antenna is suitable for a 4G LTE wireless communication system, a network and a base station.

The invention discloses a wireless fish finder. The wireless fish finder comprises an energy converter, an energy converter drive circuit, a Bluetooth chip, an antenna and a power management module. The Bluetooth chip is connected with the energy converter through the energy converter drive circuit. The power management module is respectively connected with the energy converter drive circuit and the Bluetooth chip, the Bluetooth chip is connected with the antenna, the antenna comprises a radiating element, a reflecting plate and a feed end. The radiating element comprises a triangular substrate, one corner of the triangular substrate serves as a fulcrum, the triangular substrate is supported by the reflecting plate, the triangular substrate is vertically erected on the reflecting plate, the front side and the reverse side of the triangular substrate are respectively provided with a copper-coated layer, plated through holes are evenly distributed in the periphery of the triangular substrate, and the copper-coated layer on the front side of the triangular substrate is connected with the copper-coated layer on the reverse side through the plated through holes. The wireless fish finder has the advantage that performance optimization of three parameters of miniaturization, wide bands and omni-directional radiation of the antenna of the wireless fish finder can be achieved.

The invention discloses a binary frequency reconfigurable microstrip antenna, and belongs to the technical field of basic electrical elements. The frequency reconfigurable antenna is composed of an intermediate layer dielectric substrate, an upper layer microstrip structure arranged on the intermediate layer dielectric substrate and a bottom layer metal floor with a rectangular defected ground structure, the upper-layer microstrip structure comprises a short microstrip feeder line, a long main microstrip line and microstrip annular structures with different sizes, wherein the microstrip annular structures surround the two sides of the main microstrip line. A gap is reserved between the main microstrip line and each of the annular structures on the two sides to place three PIN diodes, and the effective electrical length of the antenna is changed through on-off of the diodes to achieve the three-bit binary frequency reconfigurable characteristic. The design is simple in structure and small in size, is realized in the form of a microstrip circuit, only uses three PIN diode switches to realize eight different working states, can meet the frequency requirements under different communication systems, has a directional diagram in a low-frequency working state similar to the directional diagram of a half-wave oscillator, and realizes omnidirectional radiation on an H surface.

The invention provides a miniaturization multi-resonance antenna. The miniaturization multi-resonance antenna comprises a dielectric substrate, an annular radiation unit and a non-symmetric coplanar line feed transmission line arranged on the dielectric substrate, a parting structure radiation unit and a monopole radiation unit embedded in the annular radiation unit, and a half edge grounding plane arranged on the dielectric substrate; a dual-U-shaped radiation unit and the monopole radiation unit are both connected with the annular radiation unit; the non-symmetric coplanar line feed transmission line is connected with an inner conductor of an SMA; and an outer conductor of the SMA is connected with the grounding plane. The miniaturization multi-resonance antenna disclosed in the invention adopts the non-symmetric coplanar line feed structure and the inter-radiation-unit feed and multi-radiation-unit fusion design, so that a miniaturization design effect is achieved; and in addition,each radiation unit can be designed independently, so that multi-frequency-band design can be realized conveniently.

The invention discloses a dual-band dual-mode wireless body area network antenna, i.e., a planar microstrip antenna with dual purposes of on-body communication and out-of-body communication. Omnidirectional radiation and directional radiation are independently realized by working under a monopole mode and a cavity resonant mode. The structure of the antenna comprises an upper layer dielectric slaband a lower layer dielectric slab, wherein the upper surface of the upper layer dielectric slab is coated with metal to serve as the main radiator of the antenna, and the lower surface is not coatedwith the metal; the upper surface of the lower layer dielectric slab is coated with a metal layer to serve as the metal ground of the antenna, and the metal ground is provided with a round hole for afeeding metal column to pass; the lower surface of the lower layer dielectric slab is also coated with one section of rectangular metal structure; and two layers of dielectric slabs are connected through three metal columns, wherein the middle metal column is the feeding metal column for connecting the radiator with the tail end of the microstrip antenna, and the other two metal columns are independently connected with the radiator and the metal ground. By use of the antenna, the problem that an existing antenna feeding system with dual purposes of on-body communication and out-of-body communication is complex can be solved.

The invention provides a plane-type omnibearing dipole duplexing antenna, and the antenna includes a dielectric plate, a first resonator, a second resonator, a third resonator, an antenna arm, and a metal base plate. The first resonator, the second resonator, the third resonator and the antenna arm are disposed on the top surface of the dielectric plate, and the metal bottom plate is provided witha slot. The position where the slot is mapped on the top surface of the dielectric plate equally divides the antenna arm. The first resonator is of a three-terminal structure, wherein the first end passes through the position where the slot is mapped on the top surface of the dielectric plate, the second end is opposite to one end of the second resonator, and the third end is opposite to one endof the third resonator. The second resonator is connected with a low-frequency port, and the third resonator is connected with a high-frequency port. According to the invention, a duplexer and the antenna are integrated. The first resonator in the invention serves as the first stage of the filter and the feeder of the antenna, thereby further reducing the size and reducing the loss.

The invention provides a terminal with a reconfigurable antenna. The terminal comprises a non-grounding metal frame, an alloy bottom plate, a feed source, a suspension metal body, a first grounding circuit and a second grounding circuit, wherein the feed source is connected with the non-grounding metal frame, the non-grounding metal frame is connected with the suspension metal body, the suspensionmetal body serves as a suspension reference ground, the first grounding circuit comprises a first control switch and a first grounding point, the first signal end of the first control switch is connected with the non-grounding metal frame, the second signal end of the first control switch is connected with the first grounding point, the first grounding point is used for connecting the alloy bottom plate, the second grounding circuit comprises a second control switch and a second grounding point, the first signal end of the second control switch is connected with the suspension metal body, thesecond signal end of the second control switch is connected with the second grounding point, and the second grounding point is used for connecting the alloy bottom plate. According to the terminal provided by the invention, the reconstruction of the antenna radiation direction in the narrower and narrower trend of the clearance zone is realized, and the omnidirectional requirement of the antennain the terminal can be met.

The invention discloses a patch radiation unit. The patch antenna unit comprises a reflection plate and a radiation unit installed on one side surface of the reflection plate. The radiation unit comprises a radiation patch, a feed balun and a matching network, wherein the radiation patch is electrically connected with the matching network through the feed balun, the matching network is fixed on the reflection plate, the radiation patch is of a curved surface structure arched in the direction away from the reflection plate, and at least one slot line is formed in the radiation patch. By adopting a curved surface conformal and surface slotted structure, the working bandwidth of an antenna can be effectively broadened on the premise of reducing the width of the radiation unit.

The invention discloses an omnibearing circularly-polarized antenna of a handheld terminal. The antenna comprises a floor plate, dielectric substrates arranged on the floor plate, an inverted-F antenna and a monopole antenna which are both arranged on the dielectric substrates, wherein the plurality of dielectric substrates are sequentially connected on the floor plate to form a closed enclosure frame, and the inverted-F antenna and the monopole antenna are respectively arranged at the corners of the two dielectric substrates, and the inverted-F antenna and the monopole antenna are mutually connected, and a feed interface is arranged at the joint of the inverted-F antenna and the monopole antenna. According to the invention, the application of the antenna on the handheld terminal can be effectively realized, and the problems of miniaturization and the like are solved.

The invention relates to an intelligent antenna which comprises an antenna support frame (3). The antenna support frame (3) is of a cylindrical structure; a plurality of antenna unit arrays (1) are uniformly arranged around the antenna support frame (3) and enclose into a cylinder structure concentric to the antenna support frame (3); and a fixed part (4) is connected with between the antenna unit array (1) and the antenna support frame (3). The intelligent antenna has the beneficial effects that on the premise of not changing the existing hardware system, not only can the various performances of the intelligent antenna be ensured, but also the effect of keeping the gain unchanged in the wave beam scanning can be realized; and moreover, the installation is convenient, and the occupied space is small.

The invention discloses a single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI, which comprises a reflecting plate, a horizontally arranged first dielectric plate and a vertically arranged second dielectric plate, and is characterized in that a first dipole antenna and a second dipole antenna are symmetrically attached to the upper surface and the lower surface of the first dielectric plate; a dipole antenna array composed of four dipole antennas is formed, the dipole antenna array is used for achieving omnidirectional radiation and horizontal polarization characteristics of 5G signals, a radiator and a feed wire are attached to the first surface of the second dielectric plate, a ground wire is attached to the second surface of the second dielectric plate, the middle of the radiator is connected with the feed wire to form a feed point, the two tail ends of the radiator are connected with the reflecting plate to form a loop for realizing omnidirectional radiation and vertical polarization characteristics of 2.4 G signals, and the omnidirectional antenna provided by the invention has the characteristics of single port, double frequency, horizontal and vertical dual polarization, wide frequency, small size, good omnidirectional performance and high average gain.

The invention relates to a millimeter wave omnidirectional circularly polarized antenna based on a circularly polarized loudspeaker. The millimeter wave omnidirectional circularly polarized antenna comprises a millimeter wave circularly polarized loudspeaker, and is characterized by further comprising a metal conical reflective face and the millimeter wave circularly polarized loudspeaker. An output end of the millimeter wave circularly polarized loudspeaker is a standard BJ320 waveguide, and an input mode is a TE10 mode which can be converted into a TE11 mode through a rectangular-circularly convertor. A circular polarization device respectively presents the capacitive function and the inductive load function to a perpendicular electric field vector and a horizontal electric field vector so that phases of the two vectors are lagged and lead, and the fact that waves radiated from an expanded T-shaped metal table has a good circularly polarization characteristic is guaranteed. The circularly polarized waves are radiated on the metal conical reflective face, the main radiation direction of the waves is changed from the axial direction to the radial direction, the direction of the radiation waves rotates reversely, the circularly polarization characteristic is not changed, but the radiation waves are omnidirectional, and circularly polarized radiation in a large angle range on a pitch face is achieved.

The invention discloses a broadband dipole. The broadband dipole comprises a reflection plate and a radiation unit installed on one side surface of the reflection plate. The radiation unit comprises aradiation assembly, a feed balun and a matching network. The radiation assembly is electrically connected with the matching network through the feed balun, the matching network is fixed on the reflection plate, and the radiation assembly is integrally of a curved surface structure arched towards the direction far away from the reflection plate. The radiation assembly comprises a flexible radiation base body and an insulating supporting piece, wherein the radiation base body is attached and fixed on the insulating supporting piece, and the insulating supporting piece is fixedly connected withthe reflecting plate. According to the invention, the effect of realizing broadband performance in an extremely small space can be achieved.

A small-sized intersecting and bending omnidirectional ultra-wideband antenna is disclosed and is used for solving a problem that a conventional small-sized ultra-wideband antenna cannot realize omnidirectional radiation and is large in cross-sectional area. Four semicircle sheets are the same in radius and intersect with each other vertically in pairs, two dipoles that are respectively a first dipole and a second dipole are formed, a coaxial line is positioned on center lines of the semicircle sheets, the coaxial line is connected with the first dipole after running through the second dipole, arc parts of the two dipoles are arranged in a face to face manner, top ends of arcs of the two dipoles are h1 from each other, each semicircle sheet is bent 90 degrees in an anticlockwise direction at r / 2 from a left side and a right side of a straight line, and r is radius of the semicircle sheet. The small-sized intersecting and bending omnidirectional ultra-wideband antenna is suitable for occasions where omnidirectional ultra-wideband antennas are applied.

The invention discloses a claw type ultrasonic transducer. The claw type ultrasonic transducer comprises a sandwich type piezoelectric ultrasonic transducer, a amplitude-changing pole and a claw typeomnidirectional radiator, wherein one end of the amplitude-changing pole is fixedly connected with the sandwich type piezoelectric ultrasonic transducer, and the other end of the amplitude-changing pole is fixedly connected with the claw type omnidirectional radiator; the sandwich type piezoelectric ultrasonic transducer comprises a rear cover plate, a piezoelectric ceramic crystal heap, and a front cover plate, and the rear cover plate, the piezoelectric ceramic crystal heap and the front cover plate are fixed together through stress bolts; and the claw type omnidirectional radiator comprisesa claw bottom and clamp fingers, one end of the claw bottom is fixedly connected with the amplitude-changing pole, the claw fingers are fixedly connected to the other end of the claw bottom, the clawbottom is of an open type structure, the plurality of claw fingers are arranged, and the claw fingers are uniformly distributed in the circumferential direction of the claw bottom. 360-degree omnidirectional acoustic radiation is achieved through the high-order bending vibration mode while high frequency and high power are achieved so that the acoustic radiation efficiency and the sound field action range can be improved, and the uniformity of a radiation sound field can be improved.

The invention provides a low-profile vertically polarized end-fire antenna based on an artificial surface plasmon structure. The antenna comprises a microstrip line excitation structure, an SSPPs transmission and radiation structure, a top SSPPs loading structure, a dielectric layer and an SMA connector; the SSPPs transmission and radiation structure is uniformly distributed above a ground plate;the top SSPPs loading structure is directly connected with the SSPPs transmission and radiation structure; the top SSPPs loading structure is parallel to the plane of the ground plate; the SMA connector is located on the left side of SSPPs antennas arranged in a unilateral comb shape; the SMA connector is used for feeding the SSPPs antennas. By combining the wavelength shortening effect of the SSPPs theory, the working wavelength of the antenna can be effectively reduced, so that the purpose of miniaturization is achieved.

The invention discloses a binary frequency reconfigurable microstrip antenna, which belongs to the technical field of basic electrical components. The frequency reconfigurable antenna consists of an intermediate dielectric substrate, an upper microstrip structure disposed on the intermediate dielectric substrate, and a bottom metal floor with a rectangular defect ground structure, wherein the upper microstrip structure includes a short microstrip feed Electric wires, a longer main microstrip line and microstrip ring structures of different sizes around the two sides of the main microstrip line. A gap is left between the main microstrip line and the ring structures on both sides to place three PIN diodes, and the effective electrical length of the antenna is changed by switching the diodes to realize the three-bit binary frequency reconfigurable characteristic. The structure of this design is simple, the volume is small, and it is realized in the form of a microstrip circuit. Only three PIN diode switches are used to realize eight different working states, which can meet the frequency requirements of different communication systems. Similar to the direction diagram of the half-wave oscillator, omnidirectional radiation on the H-plane is realized.

The monopole water antenna comprises a coaxial cable, a metal bottom plate, a Teflon base, a first water tank, a second water tank and four arc-shaped water arms, the Teflon base is located above the metal bottom plate, the lower end face of the Teflon base is attached to the upper end face of the metal bottom plate, the first water tank is achieved by forming a cylindrical cavity in a cylindrical body, and the second water tank is achieved by forming a second cavity in the cylindrical body. The cylindrical main body is located above the Teflon base, the lower end face of the cylindrical main body is attached to the upper end face of the Teflon base, an inner core of the coaxial cable sequentially penetrates through the metal bottom plate, the Teflon base and the bottom of the cylindrical main body and then enters the cylindrical cavity, and the second water tank is achieved by forming a cone frustum cavity in the cone frustum main body. The small head end of the cone frustum main body is attached to the upper end face of the cylindrical main body, four through holes communicated with the cone frustum cavity are evenly formed in the side wall of the cone frustum main body along a circle at intervals, and the four arc-shaped water arms are installed at the four through holes in a one-to-one correspondence mode; the antenna has the advantages that the structure is simple, and omnidirectional radiation can be realized in two working frequency bands.

The invention discloses an omnidirectional terminal antenna. The omnidirectional terminal antenna comprises a radiating unit, a reflecting plate and a feed end and is characterized in that the radiating unit comprises a triangular substrate, one corner of the triangular substrate is supported on the reflecting plate as a supporting point, the triangular substrate perpendicularly stands on the reflecting plate, the front face and the back face of the triangular substrate are respectively provided with a copper cladding layer, plated through holes are evenly distributed in the periphery of the triangular substrate, and the copper cladding layer on the front face of the triangular substrate is connected with the copper cladding layer on the back face of the triangular substrate through the plated through holes. The omnidirectional terminal antenna has the advantages that a non-frequency-changing structure can be formed through a triangular resonance unit, the bandwidth can reach more than 30 percent, and the omnidirectional terminal antenna can be applied to a broadband system. Besides, the substrate integration waveguide technology is applied, the structural size of the antenna is reduced by 2 / 3, and omnidirectional radiation is achieved by omnidirectional terminal antenna.

The invention discloses an antenna device and a wireless router. The antenna arrangement comprising N antenna pairs, each antenna pair includes two dipole antennas, wherein the polarization directionsof the two dipole antennas are perpendicular to each other, the center positions of the N antenna pairs coincide, the two dipole antennas of each antenna pair are arranged opposite each other along astraight line passing through the center position, and the polarization directions of any two adjacent dipole antennas of the N antenna pairs are perpendicular to each other, wherein N is an odd number greater than 1. According to an embodiment of the present invention, omni-directional radiation of the horizontal pattern of the antenna device can be realized by arranging N antenna pairs.

The invention provides a miniaturized multi-resonance antenna, which includes a dielectric substrate, a ring-shaped radiation unit arranged on the dielectric substrate, an asymmetric coplanar line feeding transmission line, a split structure radiation unit and a monopole embedded in the ring-shaped radiation unit The radiating unit, the half ground plane set on the dielectric substrate, the double U-shaped radiating unit and the monopole radiating unit are all connected to the annular radiating unit, the asymmetric coplanar line feeding transmission line is connected to the inner conductor of the SMA, and the outer conductor of the SMA The conductor is connected to the ground plane. The present invention is a miniaturized multi-resonant antenna, which adopts an asymmetrical coplanar line feed structure, radiating unit indirect feeding and multi-radiating unit fusion design, and achieves the effect of miniaturized design, and each radiating unit can be independently designed, which is convenient for realization Multi-band design.

The invention provides a signal interference antenna device, comprising a columnar box with a built-in RF (radio frequency) circuit board, a normal motif helical antenna, a planar equiangular helical antenna and a broadband magnetic ring balun, wherein the normal motif helical antenna circles around the periphery of an inner wall of the box helically and comprises a joint A at the top of the box and a joint B at the bottom of the box; the planar equiangular helical antenna is wound around an inner wall at the top of the box at intervals and comprises a central joint C and an outside joint D connected with the joint A; the broadband magnetic ring balun is fixed on the RF circuit board in the box and manufactured by winding a two-wire transmission line on a high-frequency two-hole magnetic ring; and one joint of each transmission line in the two-wire transmission line is connected to an RF output end of the RF circuit board by a same coaxial line SMA (small A type) joint, the other joint of a first transmission line is connected with the central joint C and the other end of a second transmission line is grounded. The signal interference antenna device has the wider bandwidth and canrealize all-around beam radiation in a wide band.

The invention discloses a street lamp structure with a built-in antenna, and the structure comprises a lamp cap and a lamp holder; a lamp post is connected between the lamp cap and the lamp holder; the lamp post also serves as an antenna body, and an omnidirectional antenna is arranged in the antenna body; the lamp holder is fixed to a cement foundation through foundation bolts, and a wiring pipeis arranged in the cement foundation. The omnidirectional antenna comprises a dielectric substrate, and a plurality of groups of radiation units are arranged on the dielectric substrate, wherein any radiation unit comprises a first radiation arm arranged on the front surface of the dielectric substrate and a second radiation arm arranged on the back surface of the dielectric substrate, the first radiation arm and the second radiation arm are symmetrically arranged up and down, and a feed device connected with a cable device is arranged between the first radiation arm and the second radiation arm. According to the invention, signal coverage of the frequency band of 806-960 MHz can be achieved while normal lighting is met; meanwhile, the advantages of good concealment, small size, light weight and low cost are achieved, and panic of community residents to the electromagnetic environment can be greatly reduced.

The invention relates to an ultra-short wave wing conformal vertical polarization omnidirectional antenna which comprises a radiation patch, a resistor and inductor parallel loading element, a first exponential profile metal sheet, a metal floor and a second exponential profile metal sheet. The radiation patch is located on the upper surfaces of the wing; the first exponential profile metal sheetis located at the center of the radiation patch and is connected with a feed coaxial cable; the metal floor is positioned on the lower surface of the wing; the exponential profile metal sheets are positioned at two ends of the radiation patch and are connected with the metal floor; and one end of the resistor and inductor parallel loading element is welded on the radiation patch, and the other endis welded on the second exponential profile metal sheet. The antenna realizes good matching in an ultra-short wave microwave ultra-wide frequency band, the voltage standing-wave ratio in a full frequency band is less than 2.5, the omnidirectional radiation of a horizontal plane is realized in a vertical polarization working form, complete conformity with wings is realized, the height of the section of the antenna is 45mm, an airplane appearance structure is not additionally added, and the original aerodynamic performance of an airplane is protected.