169 results about "Slot coupling" patented technology

The invention discloses a relativistic magnetron with angular slotting coupling output, the magnetron adopts a radial extraction rectangular output structure, the magnetron comprises an anode, a cathode and a magnet, the anode comprises a long anode block and a short anode block, the end part of the short anode block is provided with an angular coupling slot, the end part of the long anode block is provided with a reflection ring, and the end part of the short anode block is provided with an angular coupling slot. A high-frequency magnetic field is distributed in a fan-shaped cavity formed among the short anode block, the long anode block and the reflecting ring, and the high-frequency magnetic field is coupled into an external waveguide through the angular coupling slot to realize output; according to the relativistic magnetron disclosed by the invention, the adopted output structure is positioned at the end part of the anode block, and all the resonant cavities participate in microwave energy extraction, so that the angular periodic symmetry of the resonant cavities is hardly influenced by the output structure; and the coupling output structure and the output structure are axially separated from the resonant cavity area, the external space of the resonant cavity can be used for arranging magnets, the excitation space is small, and the realization of light and small size of the system is facilitated.

The invention relates to a circularly polarized quasi-absorption filtering phased-array antenna. A unit of the antenna comprises a multi-layer dielectric substrate, a semi-cured layer, a metal floor, a stacked patch and an orthogonal H-shaped gap, the first dielectric substrate is provided with a parasitic square loop, the second dielectric substrate is provided with a cross-shaped strip, and radiation zero points are introduced to the upper and lower edges of a passband respectively; the 3dB orthogonal directional coupler and the L-shaped feeder form a feed network, circularly polarized radiation is realized through slot coupling, and an isolation port of the 3dB orthogonal directional coupler is connected with a 50-ohm resistor, so that the energy of a lower stop band is absorbed, the energy of an upper stop band is reflected, and a quasi-absorption filtering characteristic is presented; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good filtering performance, and when array scanning is 0-45 degrees, the overlapping impedance bandwidth is 12%, the axial ratio bandwidth is 15.8%, and the maximum scanning loss is 2.3 dB; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good quasi-absorption filtering performance, and has huge potential in millimeter wave satellite communication application.

The invention belongs to the field of antennas, and discloses a millimeter wave broadband circularly polarized antenna array and a manufacturing method thereof. The fourth metal layer is used for receiving and transmitting electromagnetic waves based on the sequential rotation feed network; the fourth metal layer is also used for serving as a ground plane of the grounding coplanar waveguide; the third dielectric layer is used for transmitting the received electromagnetic waves to the third metal layer; metal via holes are introduced into the third dielectric layer to realize the performance of the grounding coplanar waveguide; the third metal layer is used for coupling electromagnetic waves to the first radiation layer and the second radiation layer based on slot coupling; the third metal layer is also used for serving as a ground plane of the grounded coplanar waveguide; the first radiation layer and the second radiation layer are respectively used for directionally radiating electromagnetic waves to a free space; metal via holes are introduced into the first radiation layer and the second radiation layer, so that the performance of the magnetoelectric dipole antenna is realized; the millimeter wave antenna meets the requirement of a millimeter wave mobile communication working frequency band, and has the characteristics of large axial ratio bandwidth, easiness in processing, low loss and stable directional diagram.

The utility model discloses an integrated liquid crystal phased array for satellite ground communication. Comprising an upper quartz glass substrate, a lower quartz glass substrate, a liquid crystal medium arranged between the upper quartz glass substrate and the lower quartz glass substrate, polyimide films arranged above and below the liquid crystal medium, a coplanar waveguide transmission line and a slow-wave liquid crystal phase shift feed network which are arranged on the upper surface of the lower quartz glass substrate, and a plurality of slot coupling patch antenna units arranged on the upper surface of the upper quartz glass substrate, the metal ground is arranged on the lower surface of the upper substrate; the coplanar waveguide transmission line is connected with the slow-wave liquid crystal phase shift feed network, a plurality of coupling gaps are formed in the metal ground, and slow-wave liquid crystal phase shifters of the slow-wave liquid crystal phase shift feed network are correspondingly coupled with the gap coupling patch antenna units through the coupling gaps. And each slot coupling patch antenna unit is independently regulated and controlled through a corresponding slow-wave liquid crystal phase shifter so as to realize dual-beam and two-dimensional scanning. The liquid crystal phased array has the characteristics of double beams, two-dimensional scanning, high gain and easy integration.

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 relates to the technical field of phased-array antennas, in particular to a broadband phased-array antenna unit convenient to feed, which comprises an antenna unit, the output end of the antenna unit is electrically connected with a radiation patch, the bottom of the radiation patch is electrically connected with a grounding plate, the grounding plate is provided with a gap, and the gap is communicated with the antenna unit. The center of the antenna unit is provided with a center feed structure. According to the invention, by adopting a cross-shaped symmetrically distributed four-slot coupling feed mechanism and combining with a center combiner structure, the working bandwidth is expanded, the circular polarization characteristic is optimized, and meanwhile, the complexity of a feed network is remarkably simplified, the electromagnetic coupling design of the radiation patch and the double-layer grounding plate is matched with a surface slotting structure, so that the antenna efficiency is improved. According to the phased array system, the current distribution and the radiation efficiency are effectively improved, the feed regularity of the phased array system is ensured by the arrangement mode of rotary arrangement, and the radio frequency feed network adopts a multi-layer microstrip line and digital phase shift technology and supports low-loss and high-consistency signal distribution and phase control.

The invention discloses a two-dimensional adjustable radar cross section enhanced surface. The enhanced surface is formed by adding a one-dimensional Van atta array of a phase shifter into a feeder line and copying the one-dimensional Van atta array on the other dimension. The one-dimensional Van atta array has a low profile, and under the condition that the incoming wave direction is known, electromagnetic waves are made to backtrack along the incoming wave direction by regulating and controlling the phase of a phase shifter in the array. The unit structure of the one-dimensional Van atta array is composed of an antenna and a phase shifter. The antenna is a slot-coupled feed microstrip antenna, the radiation patch is rectangular, the dielectric substrate is arranged below the radiation patch, the antenna grounding plane with a slot is arranged below the dielectric substrate, the slot is I-shaped, the second dielectric substrate is arranged, and the T-shaped antenna feed microstrip line is arranged below the second dielectric substrate. The antenna feed microstrip line is connected with the phase shifter, and the units of the array at equal intervals are connected in pairs through microstrip lines with the same length to form a one-dimensional Van atta array.

The invention discloses a broadband circularly polarized magnetoelectric dipole antenna with superposed Ka-band radiation modes, and belongs to the field of radio frequency front-end devices. The antenna is composed of an electric dipole patch composed of a rectangular patch and a stepped patch, a magnetic dipole radiator composed of four metal columns, an H-shaped slotted coupling floor, a feeder line, coaxial feed metal columns, an SIW structure, a metal ground backboard, an upper dielectric substrate, a lower dielectric substrate and a pp bonding layer, an antenna unit is subjected to 4 * 4 arraying, and the circularly polarized radiation performance of the antenna unit is verified. According to the invention, the circularly polarized wave beam range is wide, and the axial ratio bandwidth is 3GHz to cover the complete working frequency band. After the array is formed, the active S parameters of the array elements are well matched, and the excellent axial ratio performance is still achieved during beam scanning.

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.

The invention discloses a broadband wide-angle scanning phased-array antenna unit and an antenna array, and belongs to the technical field of antennae, the broadband wide-angle scanning phased-array antenna unit comprises a first substrate layer, a second substrate layer, a first metal ground layer, a third substrate layer and a fourth substrate layer which are arranged in sequence; the first substrate layer, the second substrate layer, the first metal ground layer and the fourth substrate layer are respectively provided with a parasitic patch, an antenna radiator, a coupling gap and a strip-shaped feeder in a laying mode. And the strip-shaped feeder feeds through a feeding point on the back surface of the fourth substrate layer, feeds to the antenna radiator through the coupling gap, and finally feeds to the parasitic patch through coupling of the antenna radiator, so that electromagnetic signals are radiated outwards. According to the slot coupling feed structure, the impedance matching between the feed structure and the radiation structure is remarkably improved, and the antenna performance is greatly improved.

The invention discloses a low-profile broadband circularly polarized antenna for an ultra-wideband positioning system. The low-profile broadband circularly polarized antenna comprises a first dielectric substrate, a grounding plate and a second dielectric substrate, the first dielectric substrate, the grounding plate and the second dielectric substrate are sequentially attached from top to bottom; a plurality of circular metal patches are arranged on the upper surface of the first dielectric substrate to form a metasurface structure; a Z-shaped gap is etched in the grounding plate; the lower surface of the second dielectric substrate is provided with a microstrip feed structure, and the microstrip feed structure comprises a microstrip line, a feed branch with a gradual change structure, and an SMA connector. One end of the microstrip line is connected with the feed branch with the gradual change structure, and the other end is connected with the SMA connector. The circular metal patch is adopted to form the metasurface structure, the rectangular gaps of different sizes are etched in the center of the circular metal patch, the feed branch knot with the gradual change structure is coupled with the Z-shaped gap to excite the metasurface structure to generate circular polarization radiation, and large circular polarization bandwidth and impedance bandwidth are achieved.

The invention provides a substrate integrated trapped wave mirror image dielectric waveguide S-shaped circularly polarized antenna, which belongs to the field of antennas and comprises an S-shaped dielectric radiator, a metalized through hole, a microstrip feeder line, a first metal grounding plate, a first dielectric substrate, a second metal grounding plate and a second dielectric substrate, the S-shaped dielectric radiator is embedded in the first dielectric substrate and located in the center of the antenna, the lower surface of the S-shaped dielectric radiator is tightly attached to the second metal grounding plate, the upper surface of the S-shaped dielectric radiator is not covered, a plurality of metalized through holes penetrate through the first dielectric substrate and are arranged on the periphery of the S-shaped dielectric radiator in an array mode, and a gap is formed in the second metal grounding plate. The microstrip feeder is located on the lower surface of the second dielectric substrate and is perpendicular to the gap. The end, away from the gap, of the microstrip feeder is connected to a feed port in the second dielectric substrate. Circular polarization is easy to realize by combining the bent dielectric structure with the slot coupling feed at the bottom, and the radiation efficiency of the antenna is improved by using the notch mirror image structure in the antenna design.

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 belongs to the technical field of microwave communication, and particularly relates to a closely-arranged Z-type self-decoupling dielectric resonator antenna. Signals are coupled to top-layer high-dielectric-constant Z-type dielectric resonators through rectangular grooves, TM11 modes of the dielectric resonators are excited, the two top-layer high-dielectric-constant Z-type dielectric resonators are arranged back to back, the rectangular grooves are located under the dielectric resonators, and the dielectric resonators are transformed into Z types. The dielectric resonator antenna array is closely arranged and has a good isolation improvement effect, and the antenna has the advantages of low ECC, directional diagram recovery and the like. According to the invention, the TM11 mode of the top-layer high-dielectric-constant Z-type dielectric resonator is excited by using microstrip slot coupling feeding, the dielectric resonator antenna is tightly arranged, and compared with a traditional dielectric resonator antenna, the dielectric resonator antenna has the characteristics of low ECC, high isolation and the like.

The invention belongs to the technical field of antennas and microwaves, and discloses an antenna housing integrated array antenna unit and system. The antenna unit comprises a main shell, a parasitic patch layer, an auxiliary shell, a main patch layer, a printed board feed layer, a reflection bottom plate, a radio frequency coaxial connector and screws. According to the antenna unit, broadband wide-angle scanning can be realized through slot coupling and parasitic patch loading; according to the invention, current transmission is destroyed or resonance is caused by slotting and the like, and second and third harmonics are inhibited; by designing the shape of the patch, the link loss can be reduced, and the antenna efficiency is improved; the antenna array plane architecture of the traditional ground radar is that an antenna and an antenna housing are independently designed, and the antenna and the antenna housing are integrally designed, so that the link loss is reduced; the metal layer is plated inside the PPS medium, the PPS medium has characteristics, and the antenna material has a protection function and is good in environmental adaptability.

The application provides a microwave co-time dual-frequency miniaturized radiator. The application adopts two transistors to construct negative resistance circuits to compensate resonator energy loss of a microwave co-time dual-frequency oscillator, and then uses a cross-slot gap to couple the output signal of an SIW resonator to a miniaturized radiator of a metal patch. The application comprises a high-frequency active negative resistance circuit, a high-frequency input DC blocking capacitor C1, a low-frequency active negative resistance circuit, a low-frequency input DC blocking capacitor C2, a high-frequency input matching circuit, a low-frequency input matching circuit and an SIW dual-mode dual-frequency radiation resonator. The application uses a dual-mode resonator to achieve the function of co-time dual-frequency oscillation signal radiation output through gap coupling of a metal patch, and the obtained oscillation signal has the advantages of high output power, high isolation and low phase noise.

An appliance includes a cabinet with a door mounted to a front portion of the cabinet. The door is movable between an open position permitting access to a chamber within the cabinet and a closed position wherein the door encloses the chamber. The appliance also includes a first end plate mounted atop the cabinet by a first hook and slot coupling and a second end plate mounted atop the cabinet by a second hook and slot coupling.

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 discloses a dual-passband filter with all adjustable center frequency and bandwidth, and aims to provide a band-pass filter with low loss and wide tuning range. According to the technical scheme, each part comprises an input port, an output port, a coupled feeder line, a quarter-wavelength resonator with a variable capacitance diode loaded at the tail end, and a branch resonator with a variable capacitance diode loaded. According to the structure, a coupling line connected with a source and a load is adopted to feed a resonator in a slot coupling mode, the capacitance value of a variable capacitance diode is changed, and finally, the bandwidth and the center frequency are tunable. According to simulation verification, the center frequency of a high pass band of the all-tunable filter disclosed by the invention is continuously adjustable within 2.39-2.61 GHz, and at the moment, the center frequency of a low pass band is kept unchanged at 1.61 GHz and the bandwidth of 120 MHz; the center frequency of the low pass band is continuously adjustable within 1.45 GHz-1. 8GHz, and the center frequency of the high pass band is kept unchanged at 2.51 GHz and the bandwidth of 107MHz; the bandwidth of the high pass band is tunable in the range of 83-132MHz, the insertion loss fluctuates in the range of 1.16-1.45 dB, and at the moment, the center frequency of 1.6 GHz and the bandwidth of 122MHz of the low pass band are kept unchanged. The result shows that the microstrip filter with the tunable center frequency and bandwidth has the advantages of low loss, wide tuning range and wide application range.

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 invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator and a first feed source, the first feed source is connected with a first feeding point located on the first radiator, and the first feed source excites the first radiator to resonate in a first target frequency band; the second feed source and the adjusting circuit are respectively connected with a second feeding point and a third feeding point which are positioned on the second radiating body, and the second radiating body is coupled with the first radiating body through a gap between the second free end and the first free end; the second feed source excites the second radiator and / or the first radiator to resonate in a second target frequency band, and the adjusting circuit is used for adjusting and controlling the path length of the resonance current corresponding to the second target frequency band, and the path of the resonance current corresponding to the second target frequency band is different from the path of the resonance current corresponding to the first target frequency band. The radiation efficiency of the first target frequency band and the second target frequency band is effectively improved, so that the communication performance is improved.

According to the TE20 mode LTCC patch antenna and radar based on the SIW structure, the SIW structure is applied to a reverse phase balance feed network and a slot coupling patch antenna, is applied to a high-gain TE20 mode LTCC patch antenna array with the frequency band of 77-81GHz and is packaged in an integrated antenna, and the TE20 mode LTCC patch antenna and radar based on the SIW structure have the performance of high gain and wide frequency band; the SIW structure and the LTCC multilayer structure are combined to realize a high-performance, miniaturized and highly integrated high-frequency microwave device, which is an important innovation in the technical field of radio frequency and microwave. The LTCC technology adopted by the invention can realize stacking of multiple layers of ceramic substrates, and provides a basis for manufacturing a multilayer SIW device; the SIW structure realizes a complex waveguide structure on the LTCC substrate, the performance and efficiency of the device are improved, and the formed array antenna has unique advantages in the development of millimeter wave packaging antennas.

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 slotted microstrip antenna comprises a dielectric plate, a first microstrip feeder plate, a second coupling window plate and a third slotted microstrip antenna plate, and the dielectric plate comprises an upper dielectric plate and a lower dielectric plate. The first microstrip feeder plate, the lower dielectric plate, the second coupling window plate, the upper dielectric plate and the third slotted microstrip antenna plate are sequentially arranged from top to bottom, the second coupling window plate is a common grounding plate, and the lower dielectric plate and the upper dielectric plate are separated by the common grounding plate. And the first microstrip feeder plate arranged on the lower dielectric plate is electromagnetically coupled to the upper radiation patch through the slot aperture of the common grounding plate. The upper dielectric plate is made of a material with a low dielectric constant and is beneficial to radiation, and the lower dielectric plate contains a feed source and is made of a material with a high dielectric constant, so that a field is restrained in a feeder line, and the bandwidth of the antenna is obviously increased.

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 discloses a frequency-adjustable decoupling patch antenna array, which comprises frequency-adjustable patch antenna units, an adjustable open-circuit microstrip decoupling structure and a microstrip line-slot coupling feeding structure, wherein the adjustable open-circuit microstrip decoupling structure is arranged between the frequency-adjustable patch antenna units, the adjustable open-circuit microstrip decoupling structure utilizes the adjustment capability of a variable capacitance diode Cv1 on the antenna operating frequency and the differential mode impedance of the array, and the following effect of the variable capacitance diode Cv2 on the common mode impedance of the array following the differential mode impedance when frequency modulation, and the cross-polarization suppression effect of the microstrip line-slot coupling structure are combined, so that the frequency-continuously-adjustable decoupling patch antenna array is realized, and the decoupling depth, the adjustable bandwidth and the bandwidth in a single state can be considered.

The embodiments of the present specification provide a reconfigurable antenna based on slot coupling and a control method, wherein the reconfigurable antenna based on slot coupling comprises: an antenna body, a varactor diode and a PIN diode; the antenna body comprises a semicircular patch, a branch unit and a ground plane; there is a patch gap between the semicircular patch and the branch unit, the varactor diode is arranged in the patch gap, and the varactor diode connects the semicircular patch with the branch unit; the varactor diode is provided with a corresponding first bias circuit, and the first bias circuit is used to adjust the voltage across the varactor diode to reconstruct the antenna frequency; a floor gap is provided on the surface of the ground plane, a PIN diode is provided in the floor gap, and the PIN diode is provided with a corresponding second bias circuit, and the second bias circuit is used to adjust the on-off state of the PIN diode to reconstruct the antenna's radiation pattern, so as to achieve reconstruction of the antenna's frequency and radiation pattern through a simple structure.

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 application discloses an electronic device, a first radiator includes a first end and a second end arranged oppositely, and a connection point and a feed point arranged between the first end and the second end; a signal source is electrically connected to the feed point; a second radiator includes a third end and a fourth end arranged oppositely, the third end is coupled to the second end through a gap, and the fourth end is grounded; one end of a first switch circuit is electrically connected to the connection point, and the other end of the first switch circuit is grounded; one end of a second switch circuit is electrically connected to the first end, and the other end of the second switch circuit is grounded; a working mode of an antenna assembly includes a first working mode and a second working mode, in the first working mode, the first switch circuit is in a conduction state, and the second switch circuit is in a disconnection state; in the second working mode, the first switch circuit is in a disconnection state, and the second switch circuit is in a conduction state. The application provides an electronic device with an antenna assembly maintaining good antenna performance.