409 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.

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.

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 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 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.

The invention discloses a broadband circularly polarized radiator antenna based on slot gap waveguide, and relates to the technical field of waveguide slot antennae, the broadband circularly polarized radiator antenna based on slot gap waveguide is provided with a circularly polarized radiation slot structure, a slot gap waveguide transmission structure and a microstrip feed structure from top to bottom in sequence; the microstrip feed structure comprises a dielectric substrate and a radio frequency SMA connector, wherein the back surface of the dielectric substrate is coated with copper, and the front surface of the dielectric substrate is etched with a microstrip patch. The slot gap waveguide transmission structure adopts an all-metal slot gap waveguide structure, comprises periodically arranged metal pins and stepped metal ridges, and is used for transmitting electromagnetic waves; the circularly polarized radiation slot structure comprises dumbbell-shaped slots, orthogonal radiation slots and metal fins, and is used for realizing broadband circularly polarized wave radiation. The microstrip patch excitation is adopted to facilitate active high integration, and the broadband circular polarization performance, the out-of-band filtering characteristic and the good heat dissipation characteristic are achieved through the slot gap waveguide transmission structure design and the orthogonal radiation slot design.

This invention provides a broadband circularly polarized slot antenna for partial discharge detection in high-voltage electrical equipment, comprising a first dielectric substrate, a second dielectric substrate, a coupled feed structure, an annular slotted metal patch, a metal ground, a shorting pin, a metal post, and a coaxial line. The first dielectric substrate is disposed parallel to the upper center of the second dielectric substrate. The coupled feed structure is printed on the upper surface of the first dielectric substrate, the annular slotted metal patch is printed on the lower surface of the first dielectric substrate, and the metal ground is printed on the upper surface of the second dielectric substrate. An annular slot is formed in the center of the annular slotted metal patch, and the coupled feed structure is coupled to the annular slot. This invention can better match the complex electromagnetic environment formed by multiple reflections inside high-voltage equipment, thereby improving the acquisition efficiency and detection reliability of partial discharge signals, thus completely solving the detection blind zone problem caused by the random polarization of discharge signals in traditional linearly polarized antennas.

The invention discloses an orthogonal dual-polarization metal slot antenna substructure and a manufacturing method thereof, and an array antenna, and the substructure comprises a first horizontal antenna unit half-radiation sheet, a second horizontal antenna unit half-radiation sheet, a first vertical antenna unit half-radiation sheet, and a second vertical antenna unit half-radiation sheet. The first horizontal antenna unit half-radiation sheet, the second horizontal antenna unit half-radiation sheet, the first vertical antenna unit half-radiation sheet and the second vertical antenna unit half-radiation sheet are of a cross-shaped integrally-formed structure. The outer edges of the first horizontal antenna unit half-radiation sheet, the second horizontal antenna unit half-radiation sheet, the first vertical antenna unit half-radiation sheet and the second vertical antenna unit half-radiation sheet are of arc-shaped structures; the non-electromagnetic sensitive area of each half radiation sheet in the orthogonal dual-polarization metal slot antenna substructure is provided with a plurality of weight reduction cavities. Therefore, the problems of structural design and manufacturing of some high-frequency-band, small-size and high-performance orthogonal dual-polarization metal slot array antennas are solved.

To provide a converter that can couple a derivative waveguide to a coaxial wire with low loss.SOLUTION: A converter 10 that electromagnetically couples a dielectric waveguide 3 and a coaxial line 2 comprises a shaft-shaped waveguide member 7 made of a dielectric and having a conical shaped part 71 at one end portion in an axial direction, a taper slot antenna 6 disposed to face a conical surface 71a of the conical shaped part 71, a housing 4 that accommodates the waveguide member 7 and the taper slot antenna 6, and a support member 8 that supports the waveguide member 7 with respect to the housing 4, wherein the coaxial line 2 is connected to the taper slot antenna 6 and the dielectric waveguide 3 is connected to the waveguide member 7. The support member 8 contacts a part in a circumferential direction of an outer peripheral surface 7a of the waveguide member 7 to support the waveguide member 7 with respect to the housing 4, and a gap is formed between another part in the circumferential direction of the outer peripheral surface 7a of the waveguide member 7 that is not contacted by the support member 8 and an inner surface 4a of the housing 4.SELECTED DRAWING: Figure 6

An antenna module includes a slot antenna structure and a metamaterial module. The slot antenna structure includes a feed point and a first substrate. The feed point is arranged at the first substrate. The metamaterial module is arranged at the first substrate. A position of the metamaterial module does not overlap with a position of the feed point. The metamaterial module is coupled with the feed point. The metamaterial module is configured to disperse an electromagnetic wave of the feed point.

The present invention relates to the field of wireless communication technology, and in particular to a duplex antenna. The duplex antenna described in the present invention is a single integrated duplex antenna. Specific signals need to be transmitted and received at specific ports and cannot leak to another port. The first port is connected to a monopole antenna for receiving energy fundamental signals, and the second port is connected to a slot antenna for reflecting harmonic signals. Isolation between ports is formed by different resonant current modes, without the need for additional duplex filters or power dividers to achieve duplex operation of the antenna. The feed lines of the monopole antenna and the slot antenna are zigzag, which increases the isolation between the ports. The present invention provides a duplex antenna with self-contained port isolation, which can further and effectively reduce the node area, thereby achieving the miniaturization of the receiving node of the wireless sensor network.

Embodiments of the present application provide an electronic device, comprising a front shell, the front shell is provided with a slot antenna, the slot antenna comprises a slot structure and a feed structure; the slot structure is formed at the edge of the front shell and is axisymmetric about the center line of the slot antenna, the slot structure comprises a first slot and two second slots located on both sides of the first slot, the first slot is axisymmetric about the center line, the two second slots are axisymmetric about the center line, and the feed structure is located at the middle position of the first slot; the feed structure feeds the slot antenna to excite a target antenna mode; the target antenna mode comprises a CM slot mode or a frequency-doubled mode having the same characteristics as the CM slot mode. Thus, the high-SAR antenna mode is eliminated, the low-SAR antenna mode is retained, and external passive SAR reduction is not required, thereby solving the technical problems of related art SAR reduction technology requiring higher power consumption and more complex circuit design, saving cost and reducing power consumption.