1537 results about "Feed point" patented technology

The invention relates to the technical field of antenna equipment, in particular to a multi-frequency resonant circularly polarized antenna array and a communication performance test method thereof, and solves the problem that an antenna cannot communicate through different frequencies at the same time. The antenna array comprises an antenna substrate, a circular antenna assembly and a radio frequency signal line; the circular antenna assembly comprises a feeding point, a feeder line and a radiation unit; when the circular antenna assembly works in a low-frequency working frequency band, the first branch knot and the second branch knot in the radiation unit form a first equivalent resonance length, and when the circular antenna assembly works in a high-frequency working frequency band, the part, close to the feeder line, of the second branch knot in the radiation unit and the third branch knot form a second equivalent resonance length. And when the circular antenna assembly works in a working frequency band with higher frequency, the part, close to the feeder line, of the second branch knot in the radiation unit and the fourth branch knot form a third equivalent resonance length. According to the invention, multi-band radiation and receiving can be realized, and the flexibility of the antenna is improved.

A method protects against fault arcs in an electric power distribution system in which electric power from an electric feed point is distributed via a common superordinate main distribution line and from the common main distribution line via multiple subordinate output lines. The main distribution line can be interrupted by a main switch, and each of the output lines can be interrupted by a paired output switch. A fault arc current threshold which, when exceeded by a fault arc current of a fault arc, is a precondition for triggering the main switch is matched to the maximum forward current and / or the output trigger duration of the output switches such that a fault arc is quenched selectively either by one of the output switches or by the main switch before the energy released by the fault arc exceeds a specified energy threshold.

An antenna structure includes a metal cavity and a first radiator. A first slot and a second slot are provided on a first metal layer of the metal cavity, and a first end of the second slot is connected to the first slot. A first feed point is disposed in the first slot, and a second feed point is disposed in the second slot.

The invention provides a polarization anti-interference method and device for satellite navigation, computer equipment and a medium, and the method comprises the steps: obtaining a vertical polarization response vector and a horizontal polarization response vector of a first orthogonal feeding point and a second orthogonal feeding point, and calculating a current antenna polarization ratio, calculating simulation domain polarization weight vectors of the first orthogonal feeding point and the second orthogonal feeding point based on a preset optimization strategy and the current antenna polarization ratio; and inputting the simulation domain polarization weight vector into a corresponding numerical control attenuator and a numerical control phase modulator for adjustment to obtain positioning information after anti-interference. The multi-polarization interference suppression method has the advantages that the adjustment parameter value is obtained through the optimization strategy and the current antenna polarization ratio, and the multi-polarization interference suppression performance is improved.

An antenna structure includes a feeding radiation element, a first grounding radiation element, a second grounding radiation element, a connection radiation element, an extension radiation element, and a dielectric substrate. The feeding radiation element has a feeding point. The first grounding radiation element has a first grounding point. The first grounding radiation element is adjacent to the feeding radiation element. The second grounding radiation element has a second grounding point. The connection radiation element is coupled between the first grounding radiation element and the second grounding radiation element. The extension radiation element is coupled to the connection radiation element. A closed slot is surrounded by the connection radiation element and the extension radiation element. The feeding radiation element, the first grounding radiation element, the second grounding radiation element, the connection radiation element, and the extension radiation element are all disposed on the dielectric substrate.

According to one embodiment, an antenna device includes a waveguide including a feed point and a first region. The first region is around the feed point on a first plane crossing a first axis direction passing through the feed point. The waveguide includes a plurality of radiating portions provided in the first region. Each of the radiating portions includes a first slot extending along a first slot direction and a second slot extending along a second slot direction crossing the first slot direction. The radiating portions include first and second radiating portions. A first radiating portion direction from the feed point to the first radiating portion crosses the first axis direction. A second radiating portion direction from the feed point to the second radiating portion crosses the first axis direction and crosses the first radiating portion direction.

A dual circularly polarized antenna array includes an insulating substrate, an M number of feed modules, and an M number of antenna groups. The insulating substrate includes an M number of preset points. The M antenna groups are respectively disposed on the M preset points, and each antenna group includes four antennas. Any two opposite ones of the four antennas jointly have a 180-degree rotational symmetry relative to a corresponding one of the M preset points. Each antenna includes a conductive sheet, and a first feed point and a second feed point that are electrically coupled to one of the M feed modules. The first feed points of the four antennas can jointly generate a left-hand circular polarization through one of the M feed modules, and the second feed points of the four antennas can jointly generate a right-hand circular polarization through one of the M feed modules.

The invention provides a frequency, polarization and directional diagram reconfigurable antenna unit and array. The antenna unit comprises a tuning microstrip antenna unit and a reconfigurable feed phase-shift network which are stacked, the tuning microstrip antenna unit comprises a circular radiation patch etched with a circular gap and four variable capacitance diodes bridged on the circular gap; two output ports of a Wilkinson power division network in the reconfigurable feed phase shift network are respectively connected with two feed point micro-strips through PIN diodes, and four feed points form a structure which is in space symmetry and asymmetric in impedance. The circular radiation patch and the annular radiation patch in the antenna unit have continuity in structure, only four variable capacitance diodes are loaded on the annular gap, gain fluctuation is reduced, and the antenna unit is fed through four feed points which are symmetrical in space and asymmetric in impedance, so that the antenna unit is more stable in performance. Good matching can be kept between the feed phase-shifting network and the antenna unit in a broadband range, and the tuning bandwidth of the antenna is widened.

The dual-polarized antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a fourth dielectric substrate, a fifth dielectric substrate and a double-feed probe, the first dielectric substrate, the second dielectric substrate and the fifth dielectric substrate are stacked, one surface of the first dielectric substrate is provided with four centrosymmetric patch units, and the surface, close to the first dielectric substrate, of the second dielectric substrate is provided with a radiation patch coaxial with the patch units. A first I-shaped gap and a second I-shaped gap which are crossed, vertical and centrosymmetric are formed in the third dielectric substrate close to the second substrate surface, a plurality of first metalized via holes are formed in the periphery, and the gaps are coaxial with the patch unit; the fourth dielectric substrate is provided with a first T-shaped microstrip feeder line and a second T-shaped microstrip feeder line which are not in contact with each other, the periphery of the fourth dielectric substrate is provided with second metalized via holes which are in one-to-one correspondence with the first via holes, and the feeder lines are respectively corresponding to the I-shaped gaps; and the double-feed probe is respectively connected with the feed points of the first T-shaped microstrip feeder and the second T-shaped microstrip feeder through feed holes. By adopting the dual-polarized antenna, the port isolation and the wide-angle scanning range can be improved.

The invention provides a low-frequency improved antenna structure which comprises a substrate, an antenna circuit is arranged on the front face of the substrate, an antenna ground is arranged on the back face of the substrate, an antenna unit is arranged on the front face side of the first edge of the substrate, and a low-frequency lifting branch knot is arranged on the back face side of the second edge of the substrate. The first edge and the second edge are a group of opposite sides of the substrate; the feed point supporting foot of the antenna unit is connected with the feed point of the antenna circuit, and the grounding supporting foot of the antenna unit and the low-frequency lifting branch knot are both connected with the antenna ground. According to the low-frequency improved antenna structure, the low-frequency lifting branch knot is arranged on one side of the antenna ground of the other edge, opposite to the antenna unit, of the substrate to form low-frequency waves with new frequency, and the problems that the antenna unit is narrow in low-frequency bandwidth and low in efficiency when the size of the substrate is limited are solved.

The embodiment of the invention provides a notebook computer, an antenna assembly comprises an antenna support, an excitation source, a grounding area, a feeding point and a flexible conductive piece, a first ventilation opening is formed in the side edge of a first metal shell, a ventilation channel is formed in the antenna support, and the ventilation channel is opposite to and close to the first ventilation opening; the antenna support is provided with a first face facing one side of the display and a second face deviating from one side of the display, the excitation source and the feeding point are arranged on the second face of the antenna support, a grounding area is at least arranged on the second face of the antenna support, and the flexible conductive piece is connected with the grounding area and the first metal shell. The flexible conductive part is located on the side, away from the first ventilation opening, of the excitation source, and the area, directly facing the excitation source, of the first metal shell is provided with a radiation opening or a non-metal part. According to the notebook computer provided by the embodiment of the invention, the influence of the antenna on the all-metal texture of the notebook computer can be greatly reduced, and the design of a narrow frame of the notebook computer is facilitated.

The invention provides an antenna assembly and electronic equipment, the antenna assembly comprises a radiator and a first feed source, the radiator comprises a first open end, a feed point, a second open end, a third open end and a first grounding point, and a first coupling gap is formed between the second open end and the third open end; the first feed source is electrically connected with the feed point; the first feed source is used for exciting the radiator to form a first resonant mode supporting a first frequency band, and resonant current of the first resonant mode is mainly distributed between a feed point and a first grounding point. The direction of the resonance current of the first resonance mode between the feeding point and the second opening end is the same as the direction of the resonance current between the third opening end and the first grounding point, and the first frequency band covers at least part of a medium-high frequency band or an ultrahigh frequency band; the antenna assembly can support the first frequency band and has a relatively long radiation aperture, so that the efficiency of the first frequency band is improved, and the structure of the radiator can support more frequency bands subsequently.

The invention relates to an antenna device and electronic equipment. The antenna device comprises a first radiator, a second radiator, a first feed source, a second feed source and a first tuning circuit, a first gap is arranged between the first radiator and the second radiator, and the first feed source feeds a first feed signal into the first radiator through a first feed point to enable the first radiator to support a first frequency band. The second feed source feeds a second feed signal into the second radiator through the second feed point to enable the second radiator to support a second frequency band, and the first tuning circuit is connected with the first connection point, the second connection point and the common ground end. The first tuning circuit is used for selectively conducting a path between the first radiator and the common ground end and a path between the second radiator and the common ground end so as to switch and adjust resonance modes excited by the first radiator and the second radiator. According to the antenna device, a plurality of frequency bands are supported by using fewer tuning circuits, so that the occupied space is saved, the miniaturization design is facilitated, and the cost is reduced.

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.

The utility model relates to an antenna with an FPC combined with a metal frame and communication equipment. The antenna comprises an FPC antenna and an outer frame made of a metal material, the FPC antenna is provided with a feeding point, a ground feeding point and a first radiator, and the FPC antenna is made of a flexible circuit board; the FPC antenna is indirectly coupled with the outer frame, and the outer frame serves as a second radiator of the antenna. According to the antenna and the communication equipment provided by the utility model, under the condition that the space environment of the equipment is relatively poor, a long-distance signal transmission effect can be realized by only depending on a single antenna, an enhanced electromagnetic field is generated by coupling the FPC antenna and the metal outer frame, the direction and the distance of signal transmission are further increased, and the antenna meets the transmission distance requirement of a Bluetooth antenna.

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 present disclosure provides an antenna, an antenna system and an automobile, belonging to the field of wireless communication technologies. The antenna includes a main antenna, a parasitic antenna and a main board; the main antenna and the parasitic antenna are both located on the surface of the main board, and the plane where the main antenna is located is parallel to the plane where the parasitic antenna is located and the positions are opposite; the feeding point of the main antenna is connected to the feeding transmission line of the main board, and the parasitic antenna is connected to the second grounding end of the main board; wherein, the difference between the resonant frequency point of the main antenna and the resonant frequency point of the parasitic antenna is less than a target threshold. When this antenna is applied in an automobile as a communication antenna of the automobile, such as a 4G communication antenna or a 5G communication antenna, it can achieve 4G or 5G wide-bandwidth coverage, such as full-bandwidth coverage. In addition, this antenna can also improve the out-of-band suppression ratio and enhance the anti-foreign frequency interference characteristics.

The present disclosure relates to the technical field of antennas, and provides a circularly polarized antenna, an array antenna, and a communication terminal. The circularly polarized antenna comprises a radiation patch, a grounding layer, a dielectric layer, and a power division module; the radiation patch and the grounding layer are oppositely arranged, and the dielectric layer is located between the radiation patch and the grounding layer; the power division module comprises an input end and two output ends, and the phase difference between output signals of the two output ends is 90°; the radiation patch comprises a first feed point and a second feed point, the first feed point is electrically connected to one output end, and the second feed point is electrically connected to the other output end; the virtual connection line between the first feed point and the center of the radiation patch is a first line, the virtual connection line between the second feed point and the center of the radiation patch is a second line, and the included angle between the first line and the second line is less than 90°. The circularly polarized antenna has a small size and a compact structure.

The invention discloses a resistor-loaded double-layer electric connection rotary symmetrical oscillator ultra-wideband antenna. The antenna comprises a dielectric substrate, a double-layer rotary symmetrical oscillator, a pair of metal through holes and a chip resistor. Wherein the double-layer rotationally symmetrical oscillator comprises a front radiation arm 1, a front radiation arm 2, a back radiation arm 3 and a back radiation arm 4, and each radiation arm is composed of a planar trapezoidal gradual change structure, a planar rectangular structure and a rotationally symmetrical tail end branch knot loading structure; the double-layer rotary symmetrical dipoles are connected through a pair of metal via holes, the planar resistor is loaded at a gap between the back radiation arms 3 and 4, and the feeding point is located at a gap between the front radiation arms 1 and 2. The antenna has the performance characteristics of ultra wide band and omnidirectional radiation, has the structural characteristics of ultra narrow size and ultra low profile, and is suitable for communication application scenes with limited space.

This application discloses an antenna structure and an electronic device. The antenna structure includes an antenna radiation body, a first coupled radiation branch, a second coupled radiation branch, a first feed, a first matching circuit, and a second matching circuit. The antenna radiation body is located between the first coupled radiation branch and the second coupled radiation branch, there is a gap between the antenna radiation body and the first coupled radiation branch, and there is a gap between the antenna radiation body and the second coupled radiation branch. The first feed is disposed between a first feed point on the antenna radiation body and a ground plane. The first matching circuit is disposed between a first position of the antenna radiation body and a ground plane. The second matching circuit is disposed between a second position of the antenna radiation body and a ground plane.

The invention provides an antenna device and electronic equipment, a coupling gap is formed between a first free end of a first radiator and a second free end of a second radiator of the antenna device, and a first grounding end of the first radiator and a second grounding end of the second radiator are far away from each other and are grounded; one end of the coupling amount adjusting circuit is electrically connected between the signal source and the feeding point, and the other end is electrically connected to the second radiator; the signal source excites the first radiator and the second radiator to jointly generate a resonance mode and support receiving and transmitting of wireless signals, part of resonance current formed by the resonance mode is electromagnetically coupled to the second radiator through the coupling gap, and the other part of resonance current flows between the first radiator and the second radiator through the coupling amount adjusting circuit. On this basis, the resonant current can form two current paths between the first radiator and the second radiator through the coupling gap and the coupling amount adjusting circuit, the resonant current of the first radiator and the second radiator is more dispersed, and the SAR value of the antenna device is low.

The invention provides an antenna assembly and electronic equipment, the antenna assembly comprises a radiator, a first feed source, a first matching circuit, a second feed source and a second matching circuit, the radiator comprises a first opening end, a feeding point, a second opening end, a third opening end and a first grounding point, and a coupling gap is formed between the second opening end and the third opening end; the first matching circuit is electrically connected between the feeding point and the first feed source; the second matching circuit is electrically connected between the feeding point and the second feed source; the first feed source and the second feed source share the radiator, the first feed source is used for exciting the radiator to form at least two resonance modes to support medium and high frequency bands, the second feed source is used for exciting the radiator to form at least two resonance modes to support ultrahigh frequency bands, and the radiator can support the medium and high frequency bands and can also support the ultrahigh frequency bands. And a plurality of frequency bands can be covered in a limited space.

An electronic device includes a radiator, a feed point, and a ground point. The plurality of radiators include a first radiator, a second radiator, and a third radiator. A first end of the first radiator and a first end of the second radiator are opposite to each other, and form a first gap. A second end of the first radiator and a first end of the third radiator are opposite to each other, and form a second gap. The feed point and the ground point are disposed on the first radiator. The ground point is disposed in a central region of the plurality of radiators or the first radiator, and the feed point is disposed between the central region and the first end of the first radiator. Gaps are formed between a plurality of radiators, so that a broadband antenna can be implemented.

An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a shorting radiation element, a third radiation element, a filter circuit, a proximity sensor, and a tuning circuit. The ground element provides a ground voltage. The feeding radiation element has a feeding point. The first radiation element and the second radiation element are coupled to the feeding radiation element, or are disposed adjacent to the feeding radiation element. The first radiation element is also coupled through the shorting radiation element to the ground voltage. The third radiation element is disposed adjacent to the first radiation element. The third radiation element is coupled through the filter circuit to the proximity sensor. The filter circuit is also coupled through the tuning circuit to the ground voltage.

The invention relates to an antenna structure, a control method thereof, a control device and electronic equipment, the antenna structure comprises a radiator, two ends of the radiator are a first free end and a second free end respectively, the radiator is provided with a plurality of spaced feeding points and a plurality of spaced grounding points, and the feeding points are spaced from the grounding points; the radiator can move relative to the feed source and the floor, so that the feed source can be switched and connected to a target feed point, the floor can be switched and connected to a target grounding point, the target feed point is one of the plurality of feed points, and the target grounding point is one of the plurality of grounding points. Through the movement of the radiator relative to the feed source and the floor, the feed source can be switched and connected to the target feed point, and the floor can be switched and connected to the target grounding point, so that the electrical length of the radiator is changed, switching of multi-band communication can be carried out under the conditions of not additionally adding a tuner and not occupying the space of the whole machine; the frequency of the antenna is reconfigurable, and the working requirements of the antenna in different frequency bands are met.

The utility model provides a multi-band antenna and a mobile terminal, and the antenna comprises a first radiation branch knot, a second radiation branch knot, a third radiation branch knot, a fourth radiation branch knot, a feeding point, and a grounding point. The first radiation branch knot, the second radiation branch knot and the third radiation branch knot are electrically connected with the feeding point and the grounding point and then extend towards the left side of the feeding point. The fourth radiation branch knot is electrically connected with the feeding point and the grounding point and then extends towards the right side of the grounding point. The third radiation branch knot is located below the second radiation branch knot, and the second radiation branch knot is located below the first radiation branch knot. The multi-band antenna not only can broaden the radiation band of the whole antenna, but also enables the antenna to have good harmonic suppression capability.

A vehicle includes a window with an antenna assembly. The window includes a glass surface and a metal frame along a perimeter of the glass surface. The antenna assembly is disposed on the glass surface and includes an antenna, a feed point and a ground plane. The antenna has a first end and a second end opposite the first end and is disposed in a visible region of the window. The feed point is located at the first end of the antenna. The ground plane is connected to the antenna at the first end. The metal frame is on top of at least part of the ground plane, and the ground plane is electrically coupled to the metal frame.

The invention provides an antenna system and terminal equipment, which can be applied to the technical field of communication. The antenna system comprises a metal frame and an equivalent filter circuit. At least one antenna area is arranged in the metal frame, a first antenna branch knot and a second antenna branch knot are arranged in the antenna area, and a coupling gap is formed between the first antenna branch knot and the second antenna branch knot; the first antenna branch knot is provided with a first feeding point, and the second antenna branch knot is provided with a second feeding point; the equivalent filter circuit is arranged at the coupling gap, the first end of the equivalent filter circuit is connected with the metal frame, and the second end of the equivalent filter circuit is grounded; the equivalent filter circuit comprises a first inductor and an adjustable capacitor module which are connected in parallel, and the adjustable capacitor module is configured to be capable of dynamically regulating and controlling the self capacitance value. According to the invention, the problem of mutual interference isolation of a breakpoint-free metal frame antenna in medium and high frequency bands is effectively solved, and meanwhile, low-frequency switching coverage of an antenna system can be realized, so that the problem of narrow low-frequency bandwidth of the antenna is solved.

The invention discloses a broadband miniaturized microstrip antenna applied to wireless terminal equipment, and the structure of the antenna comprises double layers of dielectric substrates, a coupling metal patch layer disposed on the upper surface of the first layer of first dielectric substrate, and a second layer of second dielectric substrate stacked on the first layer of first dielectric substrate. The radiation metal patch layer is arranged on the upper surface of the second dielectric substrate on the second layer and is etched with a U-shaped groove which is nested inside and outside, the grounding metal plate layer is arranged below the air layer on the first layer and is etched with an L-shaped groove, and a feed source point connected to the coupling metal patch layer is arranged on a grounding metal patch. The microstrip antenna provided by the invention is compact in structure and small in size, is easy to be integrated in a small wireless terminal device, can work in two working frequency bands of 2.45 GHz-2. 76 GHz and 3.22 GHz-4. 56 GHz at the same time, and can cover N41 / N77 / N78 and other core communication frequency bands in 5G Sub-6.

The invention provides an electronic device. A floor of the electronic device comprises a first edge and a second edge which are connected in a bent mode. The first radiating body, the second radiating body and the floor are arranged at intervals, and orthographic projections of a first feeding point of the first radiating body and a second feeding point of the second radiating body on the floor are located in a current weak point area of characteristic current of the floor; the first feed source is electrically connected to the first feed point and the second feed point, the phase difference of excitation signals fed into the first feed point and the second feed point by the first feed source is 180 degrees, and the first radiator and the second radiator jointly excite the floor to generate excitation current flowing in the extension direction of the first edge under the action of the first feed source. And the wireless signal of the target frequency band is supported. Therefore, the first radiating body and the second radiating body are mainly used as feed structures and do not have harsh electrical length limitation, and the two radiating bodies can realize miniaturization design and enable the first antenna to have a relatively wide bandwidth.