43results about How to "Wide beamwidth" patented technology

The invention belongs to the technical field of wireless communication, and discloses an ultra-low profile dual-band wide beam microstrip antenna based on multimode fusion. A rectangular radiation microstrip and a rectangular parasitic microstrip are attached to a dielectric substrate, and are located at an uppermost layer of the antenna; the dielectric substrate is located on an intermediate layer of the ultra-low profile dual-band wide beam microstrip antenna based on the multimode fusion; a metal bottom plate is located on the lower layer of the dielectric substrate; a gap between the rectangular radiation microstrip and the rectangular parasitic microstrip is used for radiating rays to polarize electromagnetic waves; metal through holes are formed in the dielectric substrate along theedge of the rectangular radiation microstrip and the rectangular parasitic microstrip; the metal bottom plate is located at the lowermost portion of the entire antenna, and a radio frequency connectoris installed. The antenna meets the requirement of achieving a wide beam of the antenna under the low profile condition of a traditional microstrip antenna; while ensuring the high performance of theantenna, the influence of the antenna on the shape of a carrier can be minimized; an angular scan phase control array antenna with high performance is conveniently obtained.

Flat-plate antennas have a compact form by use of a folded path network construction whereby received signals are coupled through a unitary network structure to an adjacent signal processing unit. On a folded path basis, processed signals are then coupled back into the network structure, combined with other received processed signals and then passed out of the network structure to an adjacent signal port. The signal processing unit may provide either amplification, phase shifting, or both. By reciprocal operation a signal to be transmitted may be divided into sub-array components, processed (e.g., power amplified and phase shifted), further divided, and coupled to each slot radiating element (e.g., 256 slots) of an array of slot sub-arrays. The unitary network structure may be formed of a stack of aluminum layers or plates, each having openings formed therein so that when the plates are stacked together normal and transverse waveguide sections are formed internally in an arrangement to provide signal coupling, combining and dividing. Methods employing folded path processing are also disclosed.

The invention discloses a micro structure MiMo radio frequency front end assembly. The micro structure MiMo radio frequency front end assembly comprises even groups of radio frequency front end transceiver assemblies including a micro transceiver antenna, a polarization transformer, a first channel filter, a second channel filter, an AGC (automatic gain control) receiving module and an ALC (adaptive logic circuit) emitting module, wherein the micro transceiver antenna is connected with an input end of the AGC receiving module through the polarization converter, the first channel filter and the AGC receiving module in sequence; an output end of the ALC emitting module is connected with the micro transceiver antenna through the second channel filter and the polarization transformer in sequence; the AGC receiving module comprises a first balance amplifier, a first electrically controlled attenuator, a second balance amplifier, a first coupler and a first direct-current processing circuit; the ALC emitting module comprises a second electrically controlled attenuator, a third balance amplifier, a fourth balance amplifier, a second coupler and a second direct-current processing circuit. The micro structure MiMo radio frequency front end assembly is high in integration degree and capable of greatly reducing the size of the MiMo radio frequency front end assembly, and has the advantages of being high in linearity, high in gain and the like.

The invention provides a wide beam dielectric resonator antenna, comprising a dielectric substrate, a metal floor, a microstrip feed line printed on a lower surface of the dielectric substrate, a rectangular dielectric resonator disposed on an upper surface of the metal floor, and four rectangular dielectric sheets. The metal floor is composed of a first metal floor and two identical second metal floors. The upper surface of the dielectric substrate is printed with a first metal floor, and two sides are respectively provided with two identical second metal floors. The four rectangular dielectric sheets are composed of two first rectangular dielectric sheets of the same structure and two second rectangular dielectric sheets of the same structure. The two first rectangular dielectric sheets of the same structure and the second rectangular dielectric sheets of the same structure are respectively attached to the upper and lower portions of the rectangular dielectric resonators on two opposite sides along the x-direction. The invention solves the technical problem that the dielectric resonator antenna beam is narrow, and can be used in wireless communication systems such as a satellite positioning navigation system and an intelligent transportation system.

The invention discloses a phase shift circuit, a phase shifter and an antenna, the phase shift circuit comprises a fixed circuit and a mobile circuit, the fixed circuit is provided with a power division line and a phase shift line, the power division line is provided with an input terminal, a first output terminal and a second output terminal, the phase shift line corresponds to the second output terminal, and the phase shift line is arranged in an open circuit; the mobile circuit can move relative to the fixed circuit, the mobile circuit is provided with a mobile line, and when the mobile circuit moves relative to the fixed circuit, the mobile line can be coupled with the phase shift line and enables the phase shift line to be switched from an open circuit state to a connected state. In the phase-shifting mode, the mobile line is coupled with the phase-shifting line, so that the phase-shifting line is switched from an open circuit to a connected circuit; in the wide beam mode, coupling is not generated between the mobile line and the phase shift line, the phase shift line is in an open circuit state, at the moment, a signal can only be output through the first output terminal after being input from the input terminal, and fewer antenna units are connected, so that the beam width of the antenna is relatively wide.

The invention relates to a millimeter wave antenna module and an electronic device. The millimeter wave antenna module comprises a dielectric substrate, a grounding plate, a radiation patch, a feed structure and a conductor structure. The radiation patch generates a first current of the surface through feeding of the feeding structure, and meanwhile, coupled feeding excitation between the conductor structure and the radiation patch generates a second current perpendicular to the plane where the radiation patch is located. According to the millimeter wave antenna module, a capacitive loading conductor structure is introduced, so that the module has a relatively small size, and thinning of the antenna module is realized, and due to the first current and the second current, the electric fielddistribution of the module is changed, so that the module has a relatively wide beam width, a monopole mode of the feed structure is suppressed, and a differential mode of the radiation patch is enhanced, thereby suppressing a cross polarization component and increasing the isolation of a dual polarization port.

The invention discloses a zero-refractive-index-material-based compact high-directionality planar antenna working at the frequency of 6 GHz. The planar antenna comprises a circular microstrip paster antenna and a zero-refractive-index planar lens. The circular microstrip paster antenna employs a coaxial feed way; the planar lens is arranged right in front of the antenna radiation direction and is formed by superposition of four circular thin dielectric layers at an interval of four millimeters; and magnetic resonance units with identical dimensions are distributed on surfaces of all dielectric plates in a periodic mode, wherein the magnetic resonance units have open resonant ring structures. An electromagnetic wave of antenna radiation is emitted in a similar plane wave mode based on the effect of the lens, thereby improving directionality. According to the invention, the planar antenna can be designed and processed simply. A novel artificial electromagnetic material is used for improving directionality of the microstrip paster antenna and the effect is good. Therefore, the zero-refractive-index-material-based compact high-directionality planar antenna has the broad application prospects in the directional antenna and wireless communication fields.

The invention relates to a Cassegrain antenna. The Cassegrain antenna comprises a feed source antenna (11), a main reflecting surface (13), an auxiliary reflecting surface and a main and auxiliary reflecting surface fixing device (14); the feed source antenna (11) is a conical horn in a horn antenna; the main reflecting surface (13) is in a paraboloid form; the auxiliary surface is replaced by a frequency selective surface (15); the frequency selective surface can generate resonance at the frequency points of 8 GHz to 14.5 GHz and 29 GHz to 34 GHz; electromagnetic waves can be transmitted at the frequency points, so that a wide radiation pattern can be generated; electromagnetic waves are reflected at other frequency points, so that a narrow radiation pattern can be generated; the performance of a Satcom-on-the-move system is greatly improved; the antenna works in a double-frequency mode; the working frequency bands of the antenna are 8-14.5 GHz and 29-34 GHz respectively; and in the two working frequency bands, the radiation patterns of the antenna comprise a narrow-wave beam radiation pattern and a wide-wave beam radiation pattern. The antenna can be well applied to the Satcom-on-the-move antenna system.

The invention discloses a millimeter-wave dual-polarized antenna for a mobile terminal. The millimeter-wave dual-polarized antenna consists of a magnetic dipole antenna unit based on a semi-open substrate integrated waveguide resonator and an electric dipole antenna unit taking substrate integrated waveguide as a feeding balun. According to the millimeter-wave dual-polarized antenna, three antennas are respectively mounted on the left side, the right side and the upper side of equipment, so that a three-dimensional space signal cover demand of terminal equipment exceeding a hemisphere can be met; and the characteristic of dual polarization can be provided.

The invention relates to a design method of a Chebyshev microstrip array antenna. According to the method, model parameters comprise the width parameter W, length parameter L, and thickness parameterh of a microstrip antenna; the reasonable ranges of a dielectric constant and the thickness parameter h are set, and the distribution probability of the parameters within the ranges are analyzed according to actual situations; a plurality of groups of data are obtained, data analysis is performed on width deviation and length deviation in data analysis software on the basis of the obtained data; and the mathematical models of the deviation are obtained by means of data fitting. According to the design method of the above Chebyshev microstrip array antenna, data analysis is performed on the multi-element ideal Chebyshev antenna series-fed microstrip array antenna; when ideal data are utilized to design an engineering prototype, the deterioration of the parameters of the antenna caused by error caused by processing technologies and the randomness of plates can be avoided.

There are provided mechanisms for beam forming using an antenna array comprising dual polarized elements. A method comprises generating one or two beam ports. The one or two beam ports are defined bycombining at least two non-overlapping subarrays. Each subarray has two subarray ports. The two subarray ports have identical power patterns and mutually orthogonal polarizations. The at least two non-overlapping subarrays are combined via expansion weight vectors or expansion weight arrays. The expansion weights and map the one or two beam ports to subarray ports such that the one or two beam ports have the same power pattern as the subarrays. At least some of the expansion weights have identical non-zero magnitude and are related in phase to form a transmission lobe. The method comprises transmitting signals using said one or two beam ports.

The invention discloses an antenna with an adjustable wave width. The antenna comprises a switch device, a radiation device and a phase shifter; the switch device comprises a first input branch, a second input branch, a first output branch, a second output branch and a switching switch component; the radiation device comprises a first radiation unit and a plurality of second radiation units; eachsecond phase-shifting output port is connected with each second radiation unit in a one-to-one correspondence mode; the output port of the first output branch is connected with the input port of the phase shifter, and the input port is connected with the output port of the first input branch through the switching switch component; the output port of the second output branch is connected with the first radiation unit, and the input port is connected with the output port of the second input branch through the switching switch component; the input port of the second input branch is connected witha first phase-shifting output port; and the output port of the first input branch is connected with the input port of the second output branch through a switching switch component. Therefore, the beam width of the antenna vertical plane can be changed, and the requirements of different coverage scenes can be met.

The invention also discloses a de-metalized conformal dielectric resonator antenna, which includes a floor, a dielectric substrate, a dielectric resonator, a feed slit, a feeder line, a feed port, anda dielectric loading structure. The floor and the dielectric resonator exhibit an arc-shaped conformal feature. The dielectric resonator is fixed to the upper surface of the floor. The upper surfaceof the dielectric substrate is attached to the floor, and the lower surface of the dielectric substrate is attached to the feeder line. The feed slit is etched in the center of the floor. The feed port is located at the joint between the floor and the dielectric substrate. The front surface of the dielectric resonator is attached to the rear surface of the dielectric loading structure, and the dielectric resonator and the dielectric loading structure are fixed to the upper surface of the floor. The antenna achieves feeding by the feeder line. Then, the electromagnetic wave energy is coupled and transferred to the dielectric resonator on the upper surface through the feed slit on the floor. The de-metalized conformal dielectric resonator antenna has a good tuning structure and improved design degree of freedom, realizes flexible control of size and bandwidth, realizes de-metallization, reduces design and application difficulty, and has a wider beam width and higher gain.

The invention discloses a mobile terminal millimeter wave phased array magnetic dipole antenna and a mobile terminal millimeter wave phased array magnetic dipole antenna array. The mobile terminal millimeter wave phased array magnetic dipole antenna comprises a phase-shift feed network for realizing the feed phase difference between different units and a semi-open substrate integrated waveguide resonant cavity used for realizing magnetic dipole radiation; and the semi-open substrate integrated waveguide resonant cavity adopts feed probes, and the tail end of a probe-type feed structure is connected to the phase-shift feed network. The phase-shift feed network and the semi-open substrate integrated waveguide resonant cavity are integrated onto two layers of laminated dielectric plate correspondingly, the final antenna structure is formed by the two layers of dielectric plate in a laminated mode, the lower layer is a phase-shift network layer, and the upper layer is a radiation structurelayer. The antenna array is applied to terminal millimeter wave communication so that a compact solution for solving the problem of signal coverage on the upper hemisphere surface of terminal equipment can be realized.

A wide-beam antenna has a modular radiator. The antenna is designed specifically for small cell or DAS applications where wide azimuth beamwidth is required such as an antenna mounted to a building near street level. The main radiator of the antenna is modular where the module can incorporate filtering elements for interference mitigation. The modular main radiator also provides tuning capability for the antenna.

The invention discloses a combined antenna for a millimeter wave automobile radar. The combined antenna is composed of three layers of dielectric materials and four layers of metal. The metal layer comprises a radiation layer, an antenna reflection layer, a strip line feed layer and a bottom floor layer. The radiation layer is etched with more than two identical grid radiation units which are arranged at equal intervals, and non-radiation edges of the grid units are bent arcs instead of traditional straight lines. The radiation edge replaces a traditional same-width microstrip line with a gradually-changed microstrip line, and the length and width of the connecting section between the units are consistent with those of the radiation edge of the grid unit, so that the design difficulty of the antenna is reduced. The patch units are added in the blank areas in the middle of the grid units and are connected with the non-radiation edges of the grids through the microstrip lines, and the patch units and the connecting sections between the units form a series patch antenna, so that the area of the antenna is effectively utilized. Because the area in the middle of the grid unit is small, the frequency of the resonant mode generated by the patch antenna is slightly higher than that of the grid antenna, the radiation units in two forms form a combined antenna effect, and the working bandwidth of the antenna is widened by the radiation of the generated two groups of resonant modes. The antenna adopts a via hole for feeding, feeding points are bilaterally symmetrical about the center of the linear array, and the via hole penetrates through a through hole in the antenna reflection ground layer and is connected with the strip line feeding layer; the strip line feed layer comprises a T-shaped power divider and a phase shifter realized by using an additional length, and is used for realizing differential feed. The antenna is simple in structure, easy to design, low in cost and suitable for millimeter wave band automobile radars.

The invention discloses a broadside antenna. The broadside antenna comprises a first dielectric substrate, metal patches, a grounding plate, a second dielectric substrate, a magnetic dipole, an excitation source and a coaxial cable, wherein the first dielectric substrate is provided with a gap and comprises a first surface and a second surface which are opposite to each other, the metal patches are arranged in contact with the first surface, a groove hole is formed in the grounding plate and is in contact with the second surface, the second dielectric substrate is arranged in parallel to the grounding plate and comprises a third surface and a fourth surface which are opposite to each other, a partial region of the projection of the second dielectric substrate on the grounding plate is arranged in the gap, the magnetic dipole is in contact with the third surface, the excitation source is in contact with the fourth surface, and the coaxial cable is arranged in the groove hole in a penetrating way and is connected with the excitation source. The broadside antenna disclosed by the invention has the characteristics of low profile and favorable end emission radiation; and by loading an EBG (Electromagnetic Band Gap) technology, the broadside antenna has favorable side emission radiation characteristic and extremely wide beam width, and the problems of relatively high profile, relatively low radiation efficiency and the like of an existing antenna are solved.