67 results about "Slot coupling" patented technology

The application discloses a Ka dual-circular polarization antenna unit and a flat plate array antenna, which comprises, from top to bottom, a radiation patch layer, a slot coupling layer, a waveguide transmission layer and a feed network layer; a plurality of microstrip line structures are arranged on the radiation patch layer, the microstrip line structure comprises a first microstrip line and a second microstrip line, and the first microstrip line and the second microstrip line form a 90-degree phase difference of electric field orthogonal components; the slot coupling layer comprises a second substrate, the second substrate is provided with a source collapse groove corresponding to the microstrip line structure, and the slot coupling layer and the radiation patch layer are relatively displaced under the action of an external force; the microstrip line structure corresponding to the source collapse groove is switched between a left-handed circular polarization microstrip line and a right-handed circular polarization microstrip line through the relative displacement; and the source collapse groove and the first substrate form a linear polarization feed source. According to the application, each dual-circular polarization feed source is used to form dual-circular polarization, and a polarization partition plate of a feed source waveguide is not relied on, so that the thickness of the antenna structure is reduced.

The invention provides a low-profile circularly polarized antenna unit for slot coupling feed and an array thereof, and the antenna unit employs a plurality of metal layers which are coaxially arranged, are sequentially stacked up and down and are separated through dielectric layers, thereby achieving the high integration of a feed network, a coupling structure and a radiation unit in the vertical direction of the antenna unit. Specifically, the parasitic patch and the radiation patch which are stacked and coupled up and down are adopted, so that the working bandwidth of the antenna unit is expanded; furthermore, the interference of a feed network on the radiation performance of the antenna is reduced through the separation of the upper metal ground and the lower metal ground, and meanwhile, two orthogonally distributed gap structures formed in the upper metal ground are matched with the microstrip transmission line to perform coupling feed, so that the circular polarization performance of the antenna unit is improved; in addition, periodically arranged metallized shielding through holes are formed in the edges of the antenna units, so that surface wave propagation and electromagnetic coupling between the units are effectively inhibited, and the performance stability of the antenna unit during large-angle scanning is improved while the low-profile characteristic of the antenna unit is ensured.

This application provides a dual-polarized differential base station antenna, relating to the field of communication technology. The dual-polarized differential base station antenna includes a dielectric substrate, a first resonant cavity, multiple second resonant cavity groups, a coupling component, and a coaxial feed conductor. The first resonant cavity is disposed inside the dielectric substrate and extends to the upper and lower surfaces of the substrate. A first radiation slot is provided on the upper surface of the first resonant cavity. Multiple second resonant cavity groups are symmetrically distributed around the first resonant cavity. Each second resonant cavity group includes at least one second resonant cavity, and a second radiation slot is provided on the upper surface of each second resonant cavity. The coupling component connects the first resonant cavity to each second resonant cavity group. The coaxial feed conductor is connected to a ground plane and penetrates the dielectric substrate to connect to the upper surface of the first resonant cavity. The dual-polarized differential base station antenna of this application achieves high gain, high isolation, and wide bandwidth performance while maintaining a low profile structure.

The invention discloses a unilateral excitation independent dual-polarization beam-forming transmission and reflection integrated array antenna which comprises a high-isolation dual-polarization feed source and a metasurface. The feed source adopts orthogonal I-type slot coupling and double-layer orthogonal feed, and the port isolation is superior to 50dB. According to the dual-polarization feed antenna, the radiation patch is coupled and excited through the orthogonal I-type slot on the grounding plate, and the SMA side feed is coupled through the orthogonal feeder lines above and below the double-layer substrate. The metasurface reflection subsystem is an X-direction bow-tie-shaped multi-layer stack, and the transmission subsystem is a Y-direction oval multi-layer stack. The antenna works in an X wave band, and the frequency bands of the two ports are 9.98 GHz to 10.65 GHz and 9.67 GHz to 10.58 GHz. The excitation reflection gain of the port 1 is 20.2 dBi, and the excitation transmission gain of the port 2 is 20.3 dBi. The antenna has the characteristics of high gain, dual polarization independence, reconfigurable beams in different directions, high isolation and flexible beam regulation and control, and is suitable for systems of multi-beam communication, directional networking and the like.

The invention provides a broadband horizontal polarization waveguide slot antenna array, which comprises a radiation slot layer, a slot coupling layer, a feed network layer and a standard waveguide interface, and is characterized in that the radiation slot layer is provided with 16 independent ridge waveguides, 16 V-shaped slots are cut on each ridge waveguide, each ridge waveguide is blocked by three cavity isolation walls to form four ridge waveguide sections, and each cavity isolation wall is provided with one V-shaped slot. Four V-shaped slots are distributed on each ridge waveguide section, 64 I-shaped coupling slots are formed in the slot coupling layer, the I-shaped coupling slots are located under the ridge waveguide sections, and the feed network layer adopts a flattened narrow-edge ridge waveguide design. Comprising a five-order one-to-two ridge waveguide power divider, a ridge waveguide-to-common waveguide converter, a multi-branch waveguide impedance transformer and an E-plane T-shaped joint. The antenna has the beneficial effects that the antenna is light in weight and low in profile; the antenna bandwidth is improved; the antenna structure is simple.

The application belongs to the field of satellite mobile communication, and specifically provides a wide-beam metal-resistant antenna for satellite communication to overcome the problem that communication is interrupted under the interference of a metal environment for the existing satellite communication antenna. The application adopts a design of laminated slot coupling feed, improves the back and forward radiation of the antenna through a metal reflector plate and a forward radiation plate to improve the gain, generates 90 degrees of self-phase shift through a Wilkinson power divider, feeds a rotationally symmetrical "H" type slot at the same time, introduces a metal aluminum ring to pre-compensate the metal environment, reduces the influence of the surrounding metal floor on the antenna, and the metal reflector plate and the conductive metal aluminum ring together form a magnetic dipole, which is complementary to the directional diagram of the feed plate as an electrode to widen the lobe and improve the gain at a low elevation angle. Furthermore, the application has the advantages of wide beam, good low-elevation circular polarization performance and metal resistance, and is more suitable for satellite communication in actual scenarios.

The utility model discloses an external antenna and network equipment, and relates to the technical field of communication, the internal part of the external antenna is composed of a metal assembly, a second permanent magnet material and a slot coupling feed unit are embedded in the metal assembly, and a first permanent magnet material and an antenna switching unit are arranged in one side of a shell of the network equipment; when the first permanent magnet material and the second permanent magnet material are attracted, the antenna switching unit is electrically connected with the slot coupling feed unit. The effect of automatically switching the external antenna is achieved while the installation inconvenience caused by manual screwing is avoided, and the intelligent degree of antenna switching is improved.

The invention provides a microwave common-time double-frequency miniaturized radiator. According to the miniaturized radiator, two transistors are adopted to respectively construct negative resistance circuits to compensate resonator energy loss of a microwave common-time dual-frequency oscillator, and then output signals of SIW resonators are radiated and output through metal patches coupled through cross slot gaps. Comprising a high-frequency-band active negative resistance circuit, a high-frequency-band input blocking capacitor C1, a low-frequency-band active negative resistance circuit, a low-frequency-band input blocking capacitor C2, a high-frequency-band input matching circuit, a low-frequency-band input matching circuit and an SIW dual-mode dual-frequency radiation type resonator. According to the invention, the dual-mode resonator gap coupling metal patches are adopted to realize the function of common-time dual-frequency oscillation signal radiation output, and the oscillation signal obtained by radiation has the advantages of high output power, high isolation and low phase noise.

The application relates to the technical field of antennas and discloses a spiral circularly polarized satellite communication antenna, an antenna array and a UAV, which comprises a feed medium substrate, a metal ground plate is arranged on the first end face of the feed medium substrate, a dumbbell-shaped slot coupling structure is etched on the metal ground plate, a feed network input piece and a feed network output piece are arranged at intervals on the second end face opposite to the first end face; the feed network output piece is located in the middle part of the feed medium substrate, and the projection of the feed network output piece on the plane of the metal ground plate is perpendicular to the slot coupling structure; and a flexible medium substrate cylinder is vertically connected to the metal ground plate, metal radiation arms are spirally arranged on the outer surface of the flexible medium substrate cylinder, and the metal radiation arms are connected to the opposite two side end parts of the feed network output piece through metal connecting pieces. On the basis of providing stable circularly polarized radiation performance, the antenna structure is miniaturized by effectively simplifying the feed structure.

The invention discloses a millimeter wave ultra-wideband substrate integrated coaxial line antenna array based on a laminated metasurface. The ultra-wideband antenna array comprises a coplanar waveguide-to-substrate integrated coaxial line switching structure, a one-to-eight power divider based on a substrate integrated coaxial line structure, a butterfly coupling slot and a laminated metasurface antenna, after being fed in by the coplanar waveguide, energy is transmitted to the substrate integrated coaxial line power divider through the blind hole structure, and is uniformly distributed to eight channels in the substrate integrated coaxial line power divider; and then, the energy is coupled and fed to the laminated metasurface antenna through the coupling slot. The antenna can stably work in the frequency range of 15.84 GHz-49.15 GHz, the return loss (S11) is always lower than 10 dB, and the corresponding relative bandwidth is 102.5%. In a target working frequency band, the maximum peak gain of the antenna can reach 18.58 dBi, and the antenna has excellent ultra-wideband characteristics and good radiation performance.

The invention discloses a dual-polarized waveguide slot planar antenna array, which comprises a first waveguide power division network assembly, a second waveguide power division network assembly, a third waveguide power division network assembly, a radiation cavity assembly and a radiation slot assembly which are sequentially overlapped and connected from bottom to top. The first waveguide power division network assembly, the second waveguide power division network assembly, the third waveguide power division network assembly and the radiation cavity assembly realize electromagnetic energy transmission through slot coupling. The radiation slot assembly is located at the uppermost part of the antenna, comprises a cross-shaped radiation slot which is stacked up and down, and is used for radiating the electromagnetic energy in the radiation cavity to a free space. The whole antenna array is of a low-profile flat plate structure, the size is compact, dual-polarization radiation of the antenna is achieved in the same radiation aperture, an all-metal guided wave structure can be adopted, and reduction of antenna loss is facilitated.

The application discloses a kind of full duplex antennas based on slot coupling differential feed, including two pairs of butterfly dipole antennas, first dielectric plate, four groups of vertically placed signal transmission lines, metal floor, second dielectric plate, two U-shaped feed networks and third dielectric plate;The application is placed on the upper surface and lower surface of first dielectric plate by setting two pairs of butterfly dipole antennas, to radiate horizontal polarization and vertical polarization wave, in order to generate differential signal, four T-shaped slots with the same size are etched on the metal floor, then the differential signal at T-shaped slot is transmitted to the feed position of dipole antenna by four groups of vertically placed transmission lines, and the two U-shaped feed networks are placed vertically without dielectric layer, so as to obtain larger port isolation, which can be applied to simultaneous same frequency full duplex communication system, and wireless signals can be transmitted and received simultaneously at the same frequency, thereby improving spectrum utilization efficiency.

The utility model discloses a millimeter wave antenna coupling slot structure with wide impedance bandwidth, which comprises a coupling slot arranged on the surface of a radiation patch, telescopic pieces used for changing the effective area of the coupling slot are arranged on the inner walls of the two sides of the coupling slot, and an antenna base is connected below the radiation patch through an adjustable assembly. Through the arrangement of the adjustable assembly and the telescopic pieces, the adjustable assembly can flexibly adjust the height of the radiation patch, so that the performance parameters of the antenna can be optimized, different working environments and application requirements can be met, meanwhile, the effective area of the coupling gap can be changed through the coupling gap and the telescopic pieces on the inner walls of the two sides, and the antenna is more compact. Therefore, the impedance matching and radiation characteristics of the antenna are adjusted, and the working efficiency and bandwidth of the antenna are improved.

The application provides a circularly polarized DRA array and communication equipment, the circularly polarized DRA array includes a feed plate, a plurality of metal plates installed on the first surface of the feed plate, a plurality of first fixing members, a plurality of SIW power dividers respectively installed on the corresponding metal plates, a plurality of second fixing members and a fixing plate erected on the plurality of SIW power dividers, the first surface of the feed plate is provided with a microstrip power divider, the second surface of the feed plate is provided with a microstrip slot coupling, the microstrip power divider is signal connected with the microstrip slot coupling, the metal plate is provided with a feed slot, wherein the microstrip power divider corresponds to the feed slot on the plurality of metal plates respectively, the plurality of SIW power dividers are fixedly connected with each other through the plurality of first fixing members, the fixing plate is fixedly connected with the feed plate through the plurality of second fixing members, the fixing plate and the feed plate clamp the plurality of SIW power dividers in cooperation, and the compact antenna structure is adopted to realize circular polarization, high frequency band coverage and high gain effect.

The embodiment of the present application relates to the technical field of antenna, and discloses a dual-frequency dielectric resonant antenna, which comprises a substrate, a feeding unit and an antenna unit; the substrate is provided with a plurality of feeding slots; the feeding unit is arranged on the substrate and is coupled with the feeding slots; the antenna unit comprises a plurality of dielectric resonators, the plurality of dielectric resonators are arranged on the substrate, and the plurality of dielectric resonators are sequentially connected in the same direction to form an integrated antenna unit, and one dielectric resonator is connected with one feeding slot.The embodiment of the present application sequentially connects the plurality of dielectric resonators in the same direction to form an integrated antenna unit, so that the integrated plurality of dielectric resonators only need to be bonded and fixed once, the installation of the antenna unit can be completed, the installation process is simplified, the installation alignment error caused by multiple installations of the antenna unit is reduced, and the performance simulation error and actual error of the antenna unit are avoided from being increased.

The invention discloses a low-profile broadband circularly polarized array antenna based on traveling wave slot coupling feeding. The array adopts a multi-layer structure and comprises a feed microstrip line layer, a first dielectric substrate, a metal plate with a cross recess, second to fifth dielectric substrate layers, a first metal sheet layer and a second metal sheet layer from top to bottom. The feed network realizes energy equal-amplitude in-phase and unequal-phase transmission through the first-stage T-shaped microstrip line and the second-stage unequal-length T-shaped microstrip line. The cross recess on the metal plate and the metalized through hole in the dielectric substrate work cooperatively to guide electromagnetic waves to radiate upwards and suppress transverse loss. The multiple layers of dielectric plates and the metal sheets are mixed and stacked and are arranged in a sequential rotation mode, so that the impedance bandwidth and the axial ratio bandwidth are effectively widened, and the antenna gain is improved. The antenna realizes the characteristics of high gain, wide bandwidth and low profile of 0.056 working wavelength under the center frequency of 7GHz.

This invention discloses a dual-polarized magnetoelectric dipole array antenna. The array antenna consists of antenna elements and a supporting structure. Multiple antenna elements are arrayed within the supporting structure. Each antenna element includes a radiating structure and a feeding structure. The radiating structure is a multi-layer structure with feeding structures arranged between its layers. The feeding structure employs dual-polarized microstrip feed lines. One side of each of the two microstrip feed lines is bridging and cross-laid on the lower surface of the bottom layer of the radiating structure. The feeding structure also includes two orthogonally arranged H-shaped coupling slots, which are arranged on the upper surface of the bottom layer of the radiating structure. This invention achieves ±45° dual-polarization through H-shaped slot coupling feeding and uses a slot coupling feeding and dual-polarized feed line co-layer design, compressing the antenna profile to 0.12λ0. The operating frequency band covers 3.2–5.36 GHz, the array antenna gain is better than 8 dBi, and the dual-polarization port isolation is better than 23 dB. It can simultaneously meet the requirements of the n78 and n79 frequency bands in 5G communication and is suitable for low-cost, miniaturized 5G base station equipment.

This invention discloses a method for operating in a circular waveguide TE 11 This invention relates to a millimeter-wave high-power rotating reflective waveguide phase shifter, belonging to the field of millimeter-wave transmission technology. It comprises a rectangular waveguide wide-side slot 3dB coupler, a rectangular-circular waveguide transition section, and a rotating circular waveguide phase shifting section, with its central plane divided into two symmetrical microwave channels. Electromagnetic waves are first injected through the first port of the rectangular waveguide wide-side slot 3dB coupler, then split into two paths entering the rectangular-circular waveguide transition section through the third and fourth ports of the coupler, and subsequently injected into the rotating circular waveguide phase shifting section. After propagating a certain distance within the two phase shifting waveguides, the waves are reflected by a rotating metal plate piston and finally output from the second port of the rectangular waveguide wide-side slot 3dB coupler. This invention modulates the phase at the output end by changing the electrical length of the electromagnetic wave propagating within the phase shifting section by rotating the position of the metal plate piston. Within the same operating frequency band, it possesses advantages such as high power capacity, compact structure, high phase shifting accuracy, and a large phase shifting range.

The invention relates to the technical field of antennas, in particular to a dual-band antenna based on a metal patch and a butterfly dielectric, which comprises a feed port, a dielectric substrate, a metal ground plane, a microstrip feeder line, an I-shaped slot, a rectangular metal patch, a triangular metal patch, a rectangular dielectric block and a cross dielectric radiator, according to the dual-band antenna, four groups of triangular metal patches and a cross-shaped medium radiator form a main radiation structure; the rectangular dielectric block is used as an electromagnetic energy conductor and transmits the energy coupled by the I-shaped slot to the radiation structure; the rectangular metal patch restrains electromagnetic energy and improves the radiation efficiency of the antenna. The novel design point is that the metal patch radiation and the medium radiation are combined to generate dual-band radiation, the design can be used in an antenna design system needing dual bands, the advantages of the metal patch radiation and the medium radiation are combined, and the antenna is suitable for more use scenes and requirements.

The application provides a novel ultra-wideband low-profile microstrip array antenna based on a gradient slot coupling, and relates to the technical field of antenna engineering. The novel ultra-wideband low-profile microstrip array antenna based on the gradient slot coupling comprises a ground plate, a lower dielectric, a gradient feed line, an upper dielectric and a radiation unit. The ground plate is provided with a gradient slot. The lower dielectric is arranged on one side of the ground plate. The gradient feed line is arranged on the side of the lower dielectric away from the ground plate. The upper dielectric is arranged on the side of the ground plate provided with the gradient slot. The radiation unit is arranged on the side of the upper dielectric away from the ground plate. In the application, the grid radiation unit is matched with the gradient slot coupling structure to reduce the circuit Q value and realize continuous impedance transformation. The impedance bandwidth is significantly widened while the low profile and miniaturization are maintained. The units are periodically arranged to form a surface array, the high gain and anti-interference requirements are met, and the application range of the antenna is effectively expanded.

The present disclosure provides a side-fed waveguide 1x4 circularly polarized antenna array and its application, which comprises: a power division feeding network comprising a primary power division network and a secondary power division network connected with the primary power division network; wherein the primary power division network adopts a side feeding mode, is used for realizing mode conversion from a coaxial line mode to a waveguide mode, and performing power division conversion on a fed-in signal to output a 1:2 primary power division signal; the secondary power division network is used for converting the 1:2 primary power division signal into a 1:4 secondary power division signal; and a four-ridge metal cavity circular polarizer is coupled and connected with the power division feeding network through a coupling gap, and is used for realizing circularly polarized radiation of the 1:4 secondary power division signal.

The application discloses a miniaturized metasurface antenna, which comprises three layers, namely a radiation layer, an air layer and a feed layer from top to bottom, wherein the radiation layer is provided with a metasurface radiation structure, and the feed layer is a microstrip line slot coupling feed structure; the metasurface radiation structure is composed of 16 square patches arranged in a 4*4 array, wherein a rectangular slot is loaded at the center of each square patch, and a branch is loaded at four corners; the metasurface radiation structure adjusts the equivalent capacitance of the metasurface antenna by changing the length and width of the loaded branch extending into the square patch; and the length of the current of the metasurface antenna is adjusted by changing the length and width of the rectangular slot. Compared with the existing conventional metasurface antenna, the metasurface antenna has the advantages of ensuring a wide impedance bandwidth and high gain of the metasurface antenna in the process of miniaturization.

The utility model relates to the radio antenna technology, and discloses a directional antenna for Internet of Things communication and an Internet of Things communication device, the directional antenna comprises an artificial magnetic conductor reflecting surface located at the upper layer and a gradient metamaterial layer located at the lower layer, and the artificial magnetic conductor reflecting surface comprises metamaterial units arranged in a 5 * 5 array; in each metamaterial unit, the upper layer is a metamaterial patch covering the 2.4 GHz frequency band, the lower layer is a slot coupling antenna covering the Sub-1GHz frequency band, and the central axis of the central aperture of the fractal split resonant ring on the upper layer coincides with the central axis of the central aperture of the nested hexagonal ring on the lower layer. The utility model aims to provide a directional antenna which is low in power consumption and strong in interference resistance and can be used for long-distance and high-penetration communication of the Internet of Things.

The invention discloses a dual-polarized liquid crystal phased array based on a dual-polarized radiation subarray and a liquid crystal phase shifter. The dual-polarized liquid crystal phased array comprises the dual-polarized radiation subarray, the liquid crystal phase shifter and a power divider. The dual-polarized radiation subarray is obtained by cascading a plurality of dual-polarized radiation units in a series-fed manner, and the tapered output characteristic of a series-fed network enables a directional diagram to have a low side lobe characteristic in the longitudinal direction. And the dual-polarized radiation sub-arrays are in shunt-feed connection through a power divider. The liquid crystal phase shifter serves as a core device, continuous adjustment of a transmission phase can be achieved by adjusting bias voltage, the two ends of the liquid crystal phase shifter are connected with the radiation subarray and the power distribution circuit respectively in a slot coupling mode, and all the phase shifters are hidden below the array and do not occupy extra space. According to actual measurement, the dual-polarization channel of the liquid crystal phased array has return loss of more than 10 dB and port isolation of more than 25 dB in a designed frequency band, beam scanning is realized within + / -40 degrees, and the dual-polarization channel has an important application prospect in the fields of future communication and the like.

This invention discloses a broadband circularly polarized microstrip array antenna based on a hybrid S-shaped aperture and metasurface, belonging to the field of wireless communication antenna technology. The antenna employs a multi-layer stacked structure, comprising, from top to bottom, a first dielectric substrate, a second dielectric substrate, and a third dielectric substrate, and on the surfaces of each substrate are a metasurface radiating layer, a slot coupling layer, a microstrip feed network layer, and a metal grounding shield layer. The metasurface radiating layer is composed of periodically arranged rectangular metal patches; the slot coupling layer is etched with centrally symmetrical S-shaped bends; the microstrip feed network adopts a 2×2 sequential rotation architecture, providing excitation signals of equal amplitude and sequentially 90° phase difference. This invention increases the effective electrical length of magnetic flux through a topology-optimized S-shaped slot structure, achieves ultra-wideband characteristics through the hybrid resonance of slots, patches, and metasurfaces, and compensates for impedance singularities using sequential rotation feed technology, thus achieving wide bandwidth, high gain, high radiation efficiency, and excellent circular polarization performance.

The application relates to the technical field of radio frequency microwave circuits, and discloses a hybrid integrated duplexer with a frequency selection coupling output characteristic structure in a waveguide, which comprises a first rectangular waveguide, a second rectangular waveguide and a pair of circuits made on a dielectric substrate. The circuits on the substrate comprise a semicircular ring-shaped circuit and a first band-pass filter, the first band-pass filter is connected with the semicircular ring-shaped circuit in a gap coupling mode, and the semicircular ring-shaped circuit and the first band-pass filter are both located inside the first rectangular waveguide. The semicircular ring-shaped circuit and the first band-pass filter circuit on the dielectric substrate are matched with the first rectangular waveguide and the second rectangular waveguide, the core filtering and frequency dividing functions are directly built in the first rectangular waveguide, so that the integration of coupling and filtering is realized, the overall circuit size is reduced, the overall structure is compact, and the use requirement is met while high isolation, low insertion loss and excellent out-of-band suppression are realized.

The invention discloses a light ultra-wideband low-profile filtering antenna, an antenna array and a preparation method, and relates to the technical field of microwave antennae, the light ultra-wideband low-profile filtering antenna comprises two layers of antenna radiation parts, rectangular radiation patch patterns are processed by using thin medium copper-clad plates, and the two layers of antenna radiation parts and two layers of PMI foam form a radiation part of an integrated antenna through a lamination technology; a slot coupling feed technology is utilized to open a slot in a floor, a strip line is utilized to excite a radiation patch through H-shaped slot electromagnetic coupling, and a coaxial-strip line transition structure is further integrated on a strip line layer; integrating the printed board with a metal base in a hot pressing mode; then, integrating the ring isolation-filtering assembly with the antenna through an SMT technology; and finally, the SMP coaxial connector is assembled through a clamping process to form a connecting port for a rear-end TR assembly, so that the rear-end TR assembly can be conveniently integrated with a rear-end module. The antenna is reasonable in design, achieves excellent impedance matching and radiation characteristics within the frequency band of 12-18 GHz, has a good out-of-band rejection function, and is compact in structure, reliable in process and suitable for batch production.

The invention provides a dual-polarization differential base station antenna, and relates to the technical field of communication. The dual-polarization differential base station antenna comprises a dielectric substrate, a first resonant cavity, a plurality of second resonant cavity groups, a coupling assembly and a coaxial feed conductor. The first resonant cavity is arranged in the dielectric substrate and extends to the upper surface and the lower surface of the dielectric substrate, and the upper surface of the first resonant cavity is provided with a first radiation slot. The plurality of second resonant cavity groups are symmetrically distributed around the first resonant cavity, each second resonant cavity group comprises at least one second resonant cavity, and the upper surface of each second resonant cavity is provided with a second radiation slot. The coupling assembly is connected with the first resonant cavity and each second resonant cavity group. The coaxial feed conductor is connected with the grounding layer, and the coaxial feed conductor penetrates through the dielectric substrate and is connected to the upper surface of the first resonant cavity. According to the dual-polarization differential base station antenna, the low-profile structure is kept, and meanwhile the performance of high gain, high isolation and wide bandwidth can be achieved.

The invention discloses a low-profile annular slot coupled feeding microstrip patch antenna and an electronic device, mainly through annular slot coupled feeding and a grounding metal column mode, radiation current is mainly concentrated on the grounding metal column, and compared with a traditional patch antenna, the microstrip patch antenna has better omni-directivity. According to the main technical scheme, the microstrip patch antenna for low-profile annular slot coupled feeding comprises a patch, the patch comprises a center piece and an annular piece, the annular piece surrounds the periphery of the center piece, and an annular slot is formed between the annular piece and the center piece; the dielectric layer is located between the patch and the reference stratum; the feed probe is connected with the central sheet; and the grounding metal column is connected with the annular sheet and the reference ground layer. The invention is mainly used for radiation.

The application belongs to the field of wireless communication, and particularly relates to a pattern reconfigurable medium resonant antenna based on reflection grooves, which comprises a medium resonator, a medium substrate, a metal ground, a feeding structure, a cross-shaped groove, two pairs of reflection grooves and a bias network; wherein the medium resonator, the metal ground, the medium substrate and the feeding structure are sequentially arranged from top to bottom, the metal ground is printed on the upper surface of the medium substrate, the feeding structure is printed on the lower surface of the medium substrate, and stable feeding is realized through a gap coupling mode; the cross-shaped groove and the two pairs of reflection grooves are both arranged on the metal ground, the cross-shaped groove is accurately arranged corresponding to the central region of the medium resonator, and the two pairs of reflection grooves are symmetrically arranged at the edge regions of the medium resonator.