445 results about "Slot antenna" patented technology

The embodiment of the invention provides a ka and k waveband dual-frequency dual-polarization broadband wide-angle scanning common-aperture antenna unit and an antenna array, and relates to the technical field of common-aperture antenna arrays, the antenna unit comprises an antenna unit substrate, a low-frequency antenna, a high-frequency antenna and a wide-angle matching layer; the low-frequency antenna and the high-frequency antenna are arranged in the antenna unit substrate, and the high-frequency antenna comprises a shielding enclosure frame which is located between the low-frequency antenna and the high-frequency horizontal polarization L-shaped feed probe and between the low-frequency antenna and the high-frequency vertical polarization L-shaped feed probe; the wide-angle matching layer is arranged on the front surface of the antenna unit substrate and is positioned above the low-frequency antenna and the high-frequency antenna; wherein the low-frequency antenna is an L-shaped probe coupling microstrip patch antenna with a shielding enclosure frame, and the high-frequency antenna is a slot antenna. The antenna is simple in structure, employs a printed board technology, is very low in processing difficulty, is lower in cost, and is easy to be interconnected with rear-end equipment.

The invention discloses an intelligent adaptive metasurface and an electromagnetic regulation and control method. The metasurface unit is of a three-layer composite structure and comprises a programmable phase shifter, a slot antenna and a coupling circuit, and real-time sensing of amplitude and phase information of incident electromagnetic waves and 0-360-degree continuous regulation and control of reflection phases are achieved. The array is composed of 6 * 6 independent control units and supports + / -60-degree beam scanning and high-precision direction of arrival estimation (error lt; 1 degree). Channel state information is obtained through a coupling link, a coding matrix is dynamically optimized in combination with a closed-loop feedback algorithm, and the communication quality is improved in a complex environment. Experiments show that the metasurface respectively brings 16dB, 19dB and 8dB channel gains in ideal, non-line-of-sight and real scenes, the problems that a traditional metasurface is poor in environmental adaptability and insufficient in phase precision are solved, and an innovative hardware platform is provided for 6G communication, an intelligent reflecting surface and a radar sensing system.

The utility model discloses a waveguide slot antenna comprising a feed port layer, a slow wave line layer and a radiation slot layer which are stacked in sequence. The feed port layer is provided with a feed port used for inputting electromagnetic waves or outputting electromagnetic waves. The end face of one end, facing the feed port layer, of the slow wave line layer is provided with a snakelike slow wave cavity, one end of the snakelike slow wave cavity is provided with a feed signal end, and the feed signal end is correspondingly connected with the feed port. A plurality of waveguide radiation slots are formed in the snake-shaped channel of the snake-shaped slow wave cavity at intervals; a plurality of radiation cavity units in one-to-one correspondence with the waveguide radiation slots are arranged on the end face of one end, facing the slow wave line layer, of the radiation slot layer at intervals, a plurality of radiation slots are arranged in the radiation cavity units at intervals, and signal connecting ends correspondingly coupled with the waveguide radiation slots are arranged at one ends of the radiation cavity units. According to the utility model, the scanning angle of the antenna can be increased to adapt to application occasions with high antenna scanning angle requirements, and the adaptability is high.

Embodiments of this application provide an antenna structure. The antenna structure includes a first radiation stub, a second radiation stub, and a first feed. The first radiation stub includes two grounding points and a first feed point. The first feed point is located between the two grounding points, and the two grounding points are configured for grounding. The first radiation stub is spaced apart from a ground connected to the two grounding points to form a slot, and the first radiation stub forms a slot antenna. The second radiation stub has a gap with the first radiation stub, and the second radiation stub is coupled to the first radiation stub through the gap. The first feed is electrically connected to the first feed point of the first radiation stub and is configured to provide a first feed signal for the first radiation stub by using the first feed point.

A device may include a mainboard including a grounding unit, a radio-frequency circuit, and a conductor, wherein an annular radiation slot is provided on the conductor. The device may include a feeding terminal having a first end connected to a feeding point of the conductor and a second end electrically connected to the radio-frequency circuit of the mainboard. The device may include a first inductor having a first end connected to a grounding point of the conductor and a second end electrically connected to the grounding unit of the mainboard. The device may include a first capacitor provided in the annular radiation slot and having two electrodes respectively connected to both ends of the annular radiation slot in a width direction of the annular radiation slot, located between the feeding terminal and the first inductor in a length direction of the annular radiation slot.

The invention discloses a broadband omnidirectional conformal long-slot antenna and a wireless communication device, the antenna comprises two antenna units which are arranged up and down, and the two antenna units relatively rotate around the center at an angle of 45 degrees. Each antenna unit comprises an annular metal resonant cavity, a first annular dielectric substrate, a metal ring, a second annular dielectric substrate and a microstrip metal feeder which are sequentially arranged from inside to outside, and a circle of annular long seam is formed in the center of the metal ring. According to the antenna, the slot is used for providing low-frequency resonance points, the microstrip open-circuit line is used for providing high-frequency resonance points, the antenna achieves double working frequency bands, the working bandwidth of the antenna is greatly expanded through the design, the problem that the bandwidth of the antenna is insufficient is solved, the antenna is designed in a circular ring shape, a double-layer directional diagram compensation design method is applied, and the antenna performance is improved. Therefore, the antenna can achieve the omnidirectional radiation performance, and the problem that a traditional cavity-backed slot antenna is difficult to radiate in an omnidirectional manner is solved.

A device housing is provided for wirelessly receiving electric power in order to supply electric power to a device with an excellent power-receiving efficiency, while suppressing an increase in its size as a whole. Also, a device having the same device housing and a device housing for constituting a main body of a device which is a sensor or an actuator are provided. The device housing is provided with a power-receiving device for mainly generating an electric field or a magnetic field for performing wireless power supply. The power-receiving device includes at least one of a dipole antenna, a slot antenna, a monopole antenna, a chip antenna and an inverted-F antenna. The device housing has a size in a three-dimensional space, and expansion of its size in the three-dimensional space due to the provision of the power-receiving devices is substantially limited to one axis direction (X-axis direction) at most.

A single feed antenna design is conducted on a radiator of a specific shape (for example, a strip radiator or a slot radiator) to excite a plurality of antenna modes. For example, performing a feed design on a strip radiator may excite a CM wire antenna mode and a DM wire antenna mode. For another example, performing a feed design on a slot radiator may feed a CM slot antenna mode and a DM slot antenna mode. The antenna design may be used to cover a plurality of frequency bands when an antenna is miniaturized.

The invention discloses a double-frequency slot antenna structure with a back cavity and a design method, which are used for an omnidirectional communication system. The antenna can work in two frequency bands, the antenna comprises a disc metal cavity, eight arc-shaped gaps above the cavity, and some metal columns and metal sheets in the middle of the cavity, and the antenna feeds the gaps from the center of the bottom of the cavity in a coaxial probe feeding mode; a filtering mechanism is formed through a metal column and a metal sheet in the middle of the cavity, and high frequency is blocked through low frequency, so that high-band radiation waves are limited in the small cavity in the middle and then are radiated out from four first arc-shaped gaps above, and low-band radiation waves are radiated out from four second arc-shaped gaps above the whole disc cavity after passing through the filtering mechanism; high-frequency energy and low-frequency energy can be separated, different cavity sizes are formed at different frequencies, and working frequency radiation is controlled by combining the length of the gap.

The invention provides a structure multiplexing ultra-wideband dual-polarization low-profile high-efficiency one-dimensional phased-array antenna, and belongs to the technical field of antenna engineering. The antenna is formed by one-dimensional periodic arrangement of a plurality of antenna units. The antenna unit comprises a bottom structure, and two horizontal polarized antennas and a vertical polarized antenna which are vertically arranged above the bottom structure; wherein the bottom structure is used for feeding the horizontal polarized antenna and the vertical polarized antenna; the horizontally-polarized antennas are arranged on the two sides of the vertically-polarized antenna in a mirror symmetry mode, the horizontally-polarized antennas and the vertically-polarized antenna are arranged in an orthogonal mode, and the horizontally-polarized antennas are achieved through slot radiators to serve as ideal conductor boundaries of the vertically-polarized antenna. According to the invention, based on the idea of structure multiplexing, the slot antenna is multiplexed as an ideal electric conductor to recover the equivalent boundary condition of an infinite area array, so that the bandwidth expansion is realized; meanwhile, the fishbone-shaped slot antenna and the folding dipole are designed, so that the dual-polarization bandwidth of the antenna is further improved, and the profile height of the array is reduced.

The invention discloses a waveguide slot antenna and a control method thereof. The antenna comprises a feed port layer, a slow wave line layer and a radiation slot layer which are stacked in sequence, the feed port layer is provided with a feed port used for inputting electromagnetic waves or outputting electromagnetic waves. The end face of one end, facing the feed port layer, of the slow wave line layer is provided with a snakelike slow wave cavity, one end of the snakelike slow wave cavity is provided with a feed signal end, and the feed signal end is correspondingly connected with the feed port. A plurality of waveguide radiation slots are formed in the snake-shaped channel of the snake-shaped slow wave cavity at intervals; a plurality of radiation cavity units in one-to-one correspondence with the waveguide radiation slots are arranged on the end face of one end, facing the slow wave line layer, of the radiation slot layer at intervals, a plurality of radiation slots are arranged in the radiation cavity units at intervals, and signal connecting ends correspondingly coupled with the waveguide radiation slots are arranged at one ends of the radiation cavity units. According to the invention, the scanning angle of the antenna can be improved to adapt to application occasions with high antenna scanning angle requirements.

The invention discloses a double-frequency dual-mode fabric antenna with enhanced edge emission gain. The double-frequency dual-mode fabric antenna comprises a radiation patch, an antenna dielectric substrate and an antenna floor, the radiation patch is attached to the upper surface of the antenna dielectric substrate, and the antenna floor is attached to the lower surface of the antenna dielectric substrate; wherein a symmetrical side of the radiation patch is respectively provided with a gain improving gap, the other side of the radiation patch extends outwards to form a microstrip feeder line, impedance matching gaps are respectively arranged between two sides of the microstrip feeder line and the radiation patch, and the antenna adopts a scheme of a microstrip line side-fed square microstrip patch antenna. The flexible wearable dual-frequency dual-mode antenna is simple in structure, meets the requirements of an on-body communication mode, is very small in-band gain fluctuation, is obviously higher than an existing flexible wearable dual-frequency dual-mode antenna in edge emission gain under the condition of guaranteeing the simple structure, and effectively improves the communication quality of an in-body communication mode.

The invention relates to the technical field of antennas, and discloses an antenna module and electronic equipment, and the antenna module comprises a first antenna, a second antenna disposed outside a resonant cavity, and a feed circuit. The first antenna is a cavity slot antenna formed by a slot structure arranged on a resonant cavity enclosed by the metal conductive shell and the resonant cavity. The second antenna comprises at least one radiation branch knot. And the feed circuit is used for feeding excitation current into the first antenna and the second antenna so as to transmit and receive wireless signals of different frequency bands by using the radiation slot and the radiation branch knot formed by the slot structure.

The present invention discloses a waveguide slot antenna with a horn cavity slot, which belongs to the technical field of high-power microwave antennas. The antenna includes a radiation cavity, a feeding waveguide, and a radome, wherein the radiation cavity is composed of a plurality of slotted waveguides. The slotted waveguide has a plurality of slots with horn cavities, and the slots with horn cavities are parallel to the center line of the wide side of the slotted waveguide; a feeding slot is provided at the bottom of each slotted waveguide, and the feeding slot is a rectangular wide slot, located at the center of the slotted waveguide and passing through the feeding waveguide, and the feeding slot is perpendicular to the slot with the horn cavity. The present invention can effectively reduce the maximum electric field strength inside the antenna and improve the power capacity of the antenna, and at the same time has the advantages of low profile, light weight, easy processing and low cost.

The present subject matter provides an RFID device configured to provide improved antenna gain and directivity. The RFID device includes an antenna, a metamaterial (MTM) array, and a substrate. The substrate includes a first surface and a second surface, and the antenna includes a bottom surface and a top surface. The bottom surface of the antenna and the MTM array are formed on the first surface of the substrate. The antenna and the MTM array are separated by a gap. The antenna is formed from a first conductive material defining an area surrounded by a first perimeter. The antenna includes a nesting slot. The MTM array is formed from a second conductive material defining an area surrounded by a second perimeter.

A vehicle includes a window with an antenna assembly. The window includes a glass surface, a metal frame, and a set of defroster wires. A top defroster wire and a top edge of the metal frame define an antenna region. The antenna assembly includes a slot antenna disposed within the antenna region. The slot antenna is disposed on a glass surface of the window in a visible region of the window with a top side located proximate a horizontal cover line of the metal frame. A feed point is located in a central area of the slot antenna, and a first slot and a second slot of the slot antenna intersect at the feed point. A feed line extends from the feed point through a separation gap between the metal frame and the glass surface to connect the slot antenna to a communication device.

A plasma processing apparatus includes: a processing container; a resonator configured to resonate electromagnetic waves to be supplied; a slot antenna connected to the resonator; and a transmission window configured to transmit the electromagnetic waves radiated from the slot antenna and supply the electromagnetic waves into the processing container, wherein the resonator includes: an input port including an inner shaft and an outer cylinder; an output port including an inner shaft and an outer cylinder; a power supply fin connecting the inner shaft of the input port and the inner shaft of the output port and provided in the resonator; and a ground fin connected to the outer cylinder of the input port and the outer cylinder of the output port at a same potential and provided to protrude within the resonator so as to be inserted between fins of the power supply fin.

An electronic device comprises a housing, a printed circuit board, a first slot antenna, and a second slot antenna. The housing includes a side wall, a bezel coupled to the side wall, and a bottom plate coupled to the side wall. The printed circuit board is positioned within the housing between the bezel and the bottom plate, and at least partially forms a ground plane. The first slot antenna transmits and / or receives a first wireless signal having a first frequency and is formed in part by a first portion of a circumference of the bezel, and the ground plane of the printed circuit board. The second slot antenna transmits and / or receives a second wireless signal having a second frequency and is formed in part by a first portion of a circumference of the bottom plate, and the ground plane of the printed circuit board.

A wrist-worn electronic device includes a lower housing, an upper housing, a plurality of bezel connectors, a first global navigation satellite system (GNSS) antenna, a second GNSS antenna, and a communication antenna. The lower housing includes a side wall. The upper housing includes a bezel. The bezel connectors each provide an electrical connection to the bezel. The first GNSS antenna is configured to receive a first GNSS wireless signal. The second GNSS antenna is configured to receive a second GNSS wireless signal. The communication antenna is configured to transmit and receive a communication wireless signal. Each antenna is formed from a portion of the circumference of the bezel, a portion of the circumference of the side wall, and two of the bezel connectors.

The invention discloses a coplanar waveguide-rectangular waveguide horizontal conversion feed structure and a waveguide slot antenna, and belongs to the technical field of radar antennas. The structure mainly comprises a rectangular waveguide conversion section of which one end is connected with a rectangular waveguide and the other end is connected with a coplanar waveguide conversion section, and the rectangular waveguide conversion section is used for converting a dominant mode signal transmitted by the coplanar waveguide into a dominant mode signal transmitted by the rectangular waveguide; and one end of the coplanar waveguide conversion section is connected with the rectangular waveguide conversion section, the other end of the coplanar waveguide conversion section is connected with the coplanar waveguide feeder line, and the coplanar waveguide conversion section is used for performing impedance conversion on the input impedance of the rectangular waveguide conversion section and matching the impedance with the characteristic impedance of the coplanar waveguide feeder line. According to the invention, effective conversion of microwave or millimeter wave signals between the coplanar waveguide and the rectangular waveguide can be realized without vertical transition, and the antenna has the characteristics of simple structure, low profile, simple process and low loss.

The embodiment of the invention relates to the technical field of communication, and discloses a radar antenna and an automobile intelligent driving system.The radar antenna comprises a substrate, an electromagnetic band gap structure layer, a ridge waveguide transmission structure and an antenna radiation layer, the electromagnetic band gap structure layer is provided with a pin unit, and the pin unit forms an electromagnetic shielding area; the ridge waveguide transmission structure is arranged in the electromagnetic band gap structure layer, one end of the ridge waveguide transmission structure is connected with a chip interface, the other end of the ridge waveguide transmission structure is connected with the antenna radiation layer, and the antenna radiation layer comprises a plurality of slot antennas arranged in the longitudinal direction and a plurality of choke groove assemblies. One choke groove assembly is adjacent to one slot antenna, and the electromagnetic band gap structure layer is connected with the antenna radiation layer to form a gap waveguide transmission channel. By means of the mode, electromagnetic connection between the layers can be achieved without a welding process, and the influence of welding quality difference on the antenna performance is avoided.

A vaginal drug delivery and / or sensor device is provided comprising a drug delivery unit and / or sensing unit and a flexible circuit board comprising a first and second area preferably connected via one bent area. Control circuitry is arranged on the first area of the FPCB. A wireless communication module is arranged on the FPCB, and a slot antenna is formed on the second area of the FPCB by providing a slot in a metal layer arranged on the second area. A microstrip line connects the wireless communication module to a connection point at or adjacent to a first end of the slot. A ceramic buffer is arranged over the slot antenna on the second area. At least one adhesive layer is arranged between the ceramic buffer and the slot antenna on the second area.

The present invention discloses a broadband dual-polarized slot hollow waveguide antenna, which includes a radiation slot layer, an H-polarization full-common-feed feeding network, an orthogonal mode separation layer, and a V-polarization full-common-feed feeding network stacked from top to bottom. The V-polarization full-common-feed feeding network adopts a bottom-feed feeding method to excite the radiation slot layer to generate vertically polarized waves. The H-polarization full-common-feed feeding network adopts a side-feed feeding method to cause the radiation slot layer to generate horizontally polarized waves. The orthogonal mode separation layer is designed based on a double-ridge rectangular waveguide cavity. The radiation slot layer is used to generate vertically polarized waves under the excitation of the V-polarization full-common-feed feeding network and horizontally polarized waves under the excitation of the H-polarization full-common-feed feeding network, and synthesize the vertically polarized waves and the horizontally polarized waves into cross-polarized waves and radiate them into free space. The advantages are that while having a relatively wide impedance bandwidth, the grating lobe level will not deteriorate significantly, and it has a high antenna efficiency and a high cross-polarization (XPD).

The invention discloses a biplane tapered slot antenna, and belongs to the technical field of antennas. The antenna comprises a dielectric substrate, a metal radiation patch, a metal conduction band and a resistor. The radiation patch is arranged in a double-plane manner, so that the different-plane tapered slot line is constructed, and the impedance matching of the antenna is improved while the power capacity is improved. The metal radiation patch comprises an upper radiation patch and a lower radiation patch, the metal conduction band and the lower radiation patch form a microstrip line, and the resistor, the upper radiation patch and the lower radiation patch are connected in series into a whole, so that the effective suppression of the reflection voltage of the antenna is realized; therefore, resistance loading does not affect the radiation efficiency of the antenna. Technical index parameters such as power capacity, reflection voltage and radiation efficiency are considered at the same time, a technical scheme with excellent comprehensive performance is provided for ultra-wideband microwave pulse radiation, and the ultra-wideband microwave pulse radiation model can be used as an antenna basic model.

A slot antenna device is disposed on a metal case and includes a slot, a first dielectric substrate, a feeding metal branch, a coupling metal branch, and a signal source. The slot is in the metal case and includes a first long side, a second long side, a first short side and a second short side. The first dielectric substrate is on the metal case adjacent to the first short side of the slot and located above the slot. The feeding metal branch is on the first dielectric substrate and above the slot. A first end of the coupling metal branch is connected to the metal case of the first long side, and a second end of the coupling metal branch extends along the first long side and toward the second short side. The signal source is electrically connected to the feeding metal branch and the metal case.

The present disclosure relates an antenna assembly that includes an antenna structure and a substrate. The antenna structure may be formed from a single contiguous piece of metal. The antenna structure may include at least one slot antenna formed in the single contiguous piece of metal. The substrate may include at least one dielectric layer, and a waveguide comprising a metallized cavity that extends through the at least one dielectric layer. The antenna structure may be attached to the substrate, may be disposed at an upper surface of the substrate, and may cover the metallized cavity of the waveguide. The substrate may be a printed circuit board (PCB) substrate, an in-mold electronics (IME) substrate, a molded interconnect device (MID) substrate, or another suitable substrate.

The utility model relates to a high-gain dual-polarized waveguide slot antenna array, and belongs to the technical field of radars. Comprising a horizontally-polarized antenna and a vertically-polarized antenna which are arranged in a staggered mode, the horizontally-polarized antenna is composed of a horizontally-polarized radiation waveguide, a horizontally-polarized rectangular power dividing waveguide and a feed waveguide, and the horizontally-polarized radiation waveguide is located above the horizontally-polarized rectangular power dividing waveguide and connected with the horizontally-polarized rectangular power dividing waveguide through a transition waveguide; the feed waveguide is mounted on the lower side of the horizontal polarization rectangular power division waveguide; the vertical polarization antenna is composed of a vertical polarization radiation power division waveguide, a vertical polarization rectangular power division waveguide and a feed waveguide, the vertical polarization radiation power division waveguide is located above the vertical polarization rectangular power division waveguide and connected with the vertical polarization rectangular power division waveguide through a transition waveguide, and the feed waveguide is installed on the lower side of the vertical polarization rectangular power division waveguide. According to the utility model, the feed waveguide and the radiation waveguide are integrally processed in a mode of stacking multiple layers of waveguides; the waveguide feed network is used for feeding, and has remarkable advantages compared with a traditional micro-strip or strip line network.

An integrated antenna system includes a first patch, a second patch, and internal patches comprising electrically conductive material. Each of these patches has a radiator sub-patch and a feed-network sub-patch. The radiator sub-patches of the internal patches are located between the radiator sub-patches of the first and second patches to form an array of tapered-slot antenna elements. The radiator sub-patch of each internal patch tightly couples a neighboring pair of the antenna elements. The first patch, second patch, and internal patches are electrically isolated from each other. The feed-network sub-patches of the first and second patches are positioned to form an initial gap and cooperate with the initial gap to create a transmission line. The feed-network sub-patches of the first patch, second patch, and internal patches further form a corporate feed network that is fed by the transmission line and feeds the array of tapered-slot antenna elements.

The invention provides electronic equipment. The electronic equipment comprises an antenna. The working frequency band of the antenna comprises a satellite communication frequency band. A frame of the electronic equipment comprises a first position, a second position and a third position which are arranged in sequence, and insulation gaps are formed in the positions. The antenna takes the conductive part of the frame between the first position and the third position as a radiator. The antenna is coupled with an adjustable element at the second position. By adjusting the adjustable element, the antenna can generate directional diagrams with different maximum radiation directions, so that the experience of a user under a satellite communication condition is improved.

A vehicle includes a window with an antenna assembly. The window comprises a glass surface, a metal frame, and a series of defroster wires. An upper defroster wire and the top edge of the metal frame define an antenna area. The antenna assembly includes a slotted antenna located within the antenna area. The slotted antenna is positioned on a glass surface of the window in a visible area of ​​the window, with its top surface located near a horizontal cover line of the metal frame. A feed point is located in a central area of ​​the slotted antenna, and a first slot and a second slot of the slotted antenna intersect at the feed point. From the feed point, a feed line extends through a separation gap between the metal frame and the glass surface to connect the slotted antenna to a communications device.