525 results about "Dipole antenna" patented technology

An aspect of the present invention is an antenna pattern used in a UHF-band RFID inlay. The antenna pattern includes a first element and a second element. The first element is formed to include a loop portion and an emission portion. The loop portion includes a pair of electric power supply portions. The emission portion is connected to the loop portion, and extends line-symmetrically from the loop portion. The emission portion operates as a dipole antenna to emit a radio wave whose half wavelength is a first length. The second element is formed apart from the first element. The second element operates as a dipole antenna by electromagnetic coupling with the first element to emit a radio wave whose half wavelength is a second length. The second length is different from the first length.

An RFID tag including an inlay that is thin and easy to manufacture. The above problem is solved by an RFID tag including an inlay in which an IC chip and an antenna are provided on a base material having a main surface, wherein the antenna includes a loop conductive portion having both end portions connected to the IC chip so as to form a loop shape through the IC chip, and a dipole antenna portion disposed to surround the loop conductive portion with an interval allowing inductive coupling, and the loop conductive portion and the dipole antenna portion are formed on the main surface to have same thickness based on the main surface, and the IC chip is disposed on both end portions of the loop conductive portion.

The invention relates to a miniaturized millimeter wave filtering magnetoelectric dipole antenna with high out-of-band rejection, and relates to the technical field of communication antennae, and the miniaturized millimeter wave filtering magnetoelectric dipole antenna with the high out-of-band rejection effect comprises a strip line feed structure which is used for generating a lower stop band radiation zero point; the n-shaped feed structure is used for feeding the magnetoelectric dipole; according to the magnetoelectric dipole radiator, a U-shaped groove is etched in a dipole patch, so that the size of the antenna is reduced; the parasitic metal strips are used for enhancing the radiation suppression effect of the upper stop band; the folding split rings are folded to reduce the size of the split rings and enhance the radiation suppression effect of the lower stop band at the same time; the inverted L-shaped short circuit branch is used for enhancing the radiation suppression effect of the upper stop band, the absolute bandwidth of the antenna is 21.1 GHz to 31.0 GHz, the relative bandwidth is 37.0%, the lowest gain is 5.0 dBi, the highest gain can reach 7.8 dBi, the suppression level from the in-band highest gain to the radiation zero point of the upper stop band is larger than 40 dBi, and the suppression level from the in-band highest gain to the radiation zero point of the lower stop band is larger than 50.0 dBi.

The invention discloses a Ka-band four-tilt-beam magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave radio frequency front-end devices. Based on a magnetoelectric dipole composite radiation structure, four centrosymmetric radiation units are integrated on a low-loss substrate. The antenna comprises a probe patch of a coaxial gamma-shaped feed probe, a radiation patch, a parasitic patch, an upper dielectric substrate, a lower dielectric substrate, a middle curing layer, a shorter metal through hole of the coaxial gamma-shaped feed probe, a longer metal through hole of the coaxial gamma-shaped feed probe, a metal through hole c of the radiation patch, a metal through hole d of the parasitic patch and a metal ground backboard, a probe patch, a radiation patch and a parasitic patch of the coaxial gamma-shaped feed probe are located on the upper surface of the upper-layer dielectric substrate, and a metal ground backboard is located on the lower surface of the lower-layer dielectric substrate; the antenna has ultra-wide impedance bandwidth, has the characteristics of low cost, miniaturization, low cross polarization and back lobe suppression, and is superior to a traditional inclined beam antenna and an antenna array scheme.

Dipole antenna structures are disclosed. In certain embodiments, a dipole antenna structure includes a first dipole, a second dipole, a third dipole, and a fourth dipole aligned in parallel. The dipole antenna structure further includes a signal delay line structure electrically connected to a common signal feed. The dipoles are electrically connected to the common signal feed through the signal delay line structure.

A low-profile ultra-wideband wide-angle scanning phased-array antenna based on a tight coupling structure is composed of a metal floor and a plurality of antenna units, the antenna units extend in the X polarization direction and the Y polarization direction respectively to form a plane of any size, and an antenna array is formed; the antenna unit sequentially comprises an upper substrate, a dipole antenna and a lower substrate from top to bottom, the dipole antenna is vertically and crossly placed and comprises two layers of dielectric substrates and a layer of prepreg between the two layers of dielectric substrates, and a resistor-coated pattern is printed on the upper surface of the lower substrate.

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

The invention discloses a broadband and high-efficiency true time delay reflective array antenna, and belongs to the technical field of antenna engineering. Through the design of the broadband horn feed antenna, the broadband butterfly-shaped dipole antenna and the real-time-delay coaxial transmission line, high-efficiency directional radiation is realized. The gain bandwidth of the multi-layer patch type reflective array antenna is much larger than that of a traditional multi-layer patch type reflective array antenna; compared with a traditional transmission line phase modulation type reflective array antenna, due to stable time delay and shielding and no resonant structure, the antenna has better gain stability, and an in-band gain curve is increased approximately linearly. Finally, the antenna is simple in structure and can be realized only by a single-layer patch structure and a common coaxial transmission cable, and high-cost laminated patch processing is not needed.

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 relates to the technical field of wireless communication, and provides a filtering antenna structure, which comprises a first silicon-based dielectric layer, a first metal layer, a second silicon-based dielectric layer, a second metal layer, a third silicon-based dielectric layer, a third metal layer and a fourth silicon-based dielectric layer which are sequentially stacked and fixed, the first feed network structure is used for receiving externally transmitted energy in a first polarization direction and coupling the energy to the second silicon-based dielectric layer; the second feed network structure is used for receiving externally transmitted energy in a second polarization direction and coupling the energy in the first polarization direction and the energy in the second polarization direction to the third silicon-based dielectric layer; the third feed network structure receives energy excitation coupled by the first feed network structure and the second feed network structure; and the magnetoelectric dipole antenna structure on the fourth silicon-based dielectric layer is used for receiving energy coupled by the third feed network structure and performing filtering response. The filtering antenna structure has the characteristics of gain response adjustment and out-of-band filtering selection.

The invention provides a broadband tight coupling polarization conversion transmission and reflection integrated array antenna unit. An array is formed by periodically arranging a plurality of antenna units integrating transmission and reflection structures; the transmission structure comprises a cross-shaped dual-polarization receiving dipole antenna and a single-polarization radiation dipole antenna, a middle floor and a phase shift line are arranged between the two antennas, and a receiving layer and a transmitting layer of the transmission structure are formed through parallel double-line connection; the reflection structure is composed of a dipole antenna orthogonal to the receiving direction of the transmission structure, and reflection is completed through parallel double-wire grounding. The middle three layers of floors and the phase shift lines respectively form transmission and reflection band-shaped phase transmission lines, the lengths of the phase shift lines are adjusted according to different positions of each unit in the array, and spherical electromagnetic waves are converted into planar electromagnetic waves. The broadband bidirectional beam communication antenna has the advantages of broadband, low cost, bidirectional beam transmission and the like, and can be used for broadband bidirectional beam communication antennas.

In a magneto-electric dipole antenna, first to third substrates are stacked from top to bottom. A ground layer is disposed between the second and third substrates. Four sector patches and a first feed-out line are disposed on the first substrate. Four ground plates and first and second feed-in lines are disposed below the third substrate. Each of four vias penetrates the second and third substrates and the ground layer. A second feed-out line is disposed between the first and second substrates. Each of first and second feed-out probes penetrates the first to third substrates and the ground layer. The nth feed-out probe is connected to the nth feed-in line and the nth feed-out line, where 1≤n≤2. When two signals are fed to the feed-in lines, the signals are transmitted to the feed-out lines through the feed-out probes, and two electromagnetic waves are radiated.

The hexagonal dual-polarization high-selectivity frequency selective surface comprises a middle filtering layer and two magnetoelectric dipole antennas, and the section of the hexagonal dual-polarization high-selectivity frequency selective surface is hexagonal; the two magnetoelectric dipole antennas have the same structure and are symmetrically arranged relative to the middle filtering layer, the middle filtering layer is a middle metal layer with a central slot, the appearance of the middle metal layer is a regular hexagon, the central slot is hollowed out by a hexagon located in the center, and the middle metal layer is a rectangular metal layer. The six edge grooves extend outwards from the six edges of the hexagonal hollowed-out part respectively, and each edge groove faces one end point of the regular hexagon appearance of the middle metal layer. The middle filtering layer serves as a band-pass filter, electromagnetic waves penetrate through the middle filtering layer during resonance, suppression of low-frequency and high-frequency stop bands is achieved, and meanwhile the middle filtering layer serves as a common ground plane of the two magnetoelectric dipole antennas. According to the invention, the problems of high insertion loss in a wave-transparent window, insufficient out-of-band suppression, over-wide transition zone, poor angle stability and the like of the existing frequency selective surface can be solved.

A magneto-electric dipole antenna includes a substrate module, a director, a reflector and a feeding module. The substrate module has an upper surface and a lower surface. The director is disposed on the upper surface of the substrate module. The reflector is disposed on the lower surface of the substrate module. The feeding module is disposed in the substrate module between the director and the reflector. When a to-be-outputted signal is fed to the feeding module, a forward radiation that transmits in a forward direction pointing from bottom to top is generated, a backward radiation that transmits in a backward direction reverse to the forward direction is generated and is reflected by the reflector, and the forward radiation and the backward radiation thus reflected are directed by the director so as to generate the electromagnetic wave.

An antenna system includes a loop conductor and non-loop conductor configured to provide respective loop and dipole antenna functionality. A signal feed mechanism connects to both conductors at a signal feed point for simultaneous signal transceiving. The non-loop conductor comprises two elongate arms with an offset feed point creating shorter and longer arms, where the longer arm has increased width via a loop-shaped portion. When incorporated in eyewear devices, the loop-shaped portion extends circumferentially along a lens holder to retain lenses. The conductors may be configured through a diplexer for different frequency domains, with the non-loop conductor serving as a GPS antenna and the loop conductor as a data communication antenna. The radiation patterns of the conductors may be substantially orthogonal when driven by the signal feed mechanism. The system provides integrated antenna and mechanical functionality in wearable devices.

The invention discloses a graphene-based ultra-low-profile lightweight bucket integrated ultra-wideband antenna, and the antenna comprises a system floor which comprises a bottom plate and a frame which is arranged at the periphery of the bottom plate and wraps the whole antenna; the isolation metal is located in the system floor, is parallel to the short frame of the system floor and coincides with the perpendicular bisector of the long frame of the system floor, and two ends are connected with the long frame of the system floor; the wave-absorbing material is positioned in the system floor and is symmetrically distributed by taking the isolation metal as an axis; the dielectric substrate is positioned above the wave-absorbing material, is symmetrically distributed by taking the isolation metal as an axis, and is the same as the wave-absorbing material in length and width; and the patch dipole antennas are located above the dielectric substrate and symmetrically distributed with the isolation metal as the axis, the working frequency bands of the two patch dipole antennas range from 0.3 GH to 4 GHz, and 30 dB isolation exists between the two patch dipole antennas. The invention has the advantages of light weight, stability, strong adaptability and higher detection performance.

The invention discloses an oscillator structure and a base station antenna. The oscillator structure comprises a reflecting plate and two groups of oscillator bodies, each oscillator body comprises a feeder circuit board, a radiation sheet and a buckling part, the two groups of feeder circuit boards are mounted on the same side of the reflecting plate and are arranged in a crossed manner, the radiation sheet is a metal sheet, and the buckling part is arranged on the radiation sheet and can buckle the radiation sheet on the feeder circuit board in the same group. According to the scheme, the dipole antenna adopts a circuit board feeder mode, electric signals are coupled to the radiation sheet, and the advantage that the frequency band of the dipole antenna is wide is effectively utilized. Meanwhile, the radiation sheet can be formed by stamping a relatively thin metal sheet, so that the weight of the oscillator is greatly reduced, a good intermodulation index is achieved, mold opening is not needed, the cost is reduced, and the main advantages of a metal plate stamping process, a PCB feeder line and a dipole antenna are integrated.

The present invention provides a dual-broadband co-aperture phased array antenna, which belongs to the field of array antenna technology. The antenna array is composed of a×b low-frequency antenna units and (2a×2b)n high-frequency antenna units. By reusing the high-frequency antenna structure as a low-frequency radiation structure, a compact layout is achieved. The high-frequency antenna unit adopts a broadband antenna such as a waveguide, horn or Vivaldi composed of a metal structure to achieve broadband radiation in the high-frequency band; the low-frequency antenna unit forms a broadband magnetoelectric dipole antenna radiation structure by reusing the metal structure of the high-frequency unit. The present invention improves space utilization efficiency and achieves dual-broadband characteristics through structural reuse. At the same time, by adjusting the high-frequency antenna unit structure and the low-frequency feeding method, multiple polarization forms can be achieved, thereby enhancing the adaptability of the antenna. In addition, the compact arrangement of the radiating units reduces the unit spacing and significantly improves the wide-angle scanning performance of the array.

The invention relates to the technical field of ultra-wideband antennas, and discloses an ultra-wideband wide-angle scanning tight coupling antenna and array, and the antenna comprises an impedance matching layer, an antenna radiation layer, an antenna supporting layer and a metal floor which are stacked from top to bottom. The impedance matching layer comprises three layers of eccentric cross-shaped dielectric plates, and the first eccentric cross-shaped dielectric plate at the top layer and the second eccentric cross-shaped dielectric plate at the middle layer are provided with circular grooves at the intersection center position of the two groups of orthogonal dipoles; the antenna radiation layer is provided with two groups of orthogonally arranged unequal-width pentagonal dipoles; the antenna supporting layer is provided with two groups of feed short circuit columns and two groups of metal rib belts; and the metal floor is provided with a two-section stepped feed through hole. According to the invention, the scanning range is expanded under the condition of ensuring good matching.

A radio-frequency identification (RFID) tag, wherein an operational characteristic of the tag is susceptible to influence by a material comprising an object to which it is attached, comprising: a substrate comprising an attachment region and a flap region, the attachment region for coupling the RFID tag to a surface of an object; and, an RFID inlay formed on the substrate, comprising a loop antenna and a dipole antenna, the loop antenna and the dipole antenna each having first and second portions within the attachment and flap regions, respectively, wherein a relative portion of the loop antenna within the attachment region has a positive influence on the operational characteristic when attached to an object and a relative portion of the dipole antenna within the attachment region has a negative influence on the operational characteristic, whereby the net influence on the operational characteristic by the object can be minimized.

The invention provides a broadband circularly polarized planar end-on-fire antenna based on a substrate integrated waveguide. The broadband circularly polarized planar end-on-fire antenna comprises a wave port, the substrate integrated waveguide and a dipole antenna, the wave port is connected with one side, far away from the dipole antenna, of the dielectric substrate and is used for generating an excitation signal through feed and driving electromagnetic wave transmission in the substrate integrated waveguide, so that the substrate integrated waveguide generates a vertical polarization electric field component and the dipole antenna generates a horizontal polarization electric field component; by adjusting the amplitude-phase relation between the two orthogonal polarization electric field components, broadband circular polarization radiation is realized. The broadband circularly polarized plane end-on-fire antenna does not need an additional radiation structure to compensate the vertical polarization component, avoids the increase of the profile height due to the addition of the additional structure, achieves the low profile design, and enables the structure to be more compact. The dipole antenna is directly connected with the upper metal plate and the lower metal plate, so that the overall size of the antenna is greatly reduced, the occupied space is reduced, the manufacturing process is simplified, and the production process and the material cost are reduced.

The invention discloses a Ka-band broadband characteristic magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave radio frequency front-end devices. The antenna comprises an upper-layer dielectric substrate, a semi-cured layer, a lower-layer dielectric substrate and a metal ground backboard which are stacked from top to bottom. The surface of the upper dielectric substrate is provided with four special hexagonal radiation patches, a central rectangular feed patch and four rectangular parasitic patches. A cross-shaped gap is defined by the four radiation patches, and the center feed patch and the specific metal through hole and the metal blind hole in the lower layer jointly form an inverted L-shaped feed probe. And each radiation patch and each parasitic patch are respectively connected to the metal ground backboard through metal through holes. The antenna has the advantages of wide bandwidth, stable performance and compact structure.

The invention relates to the technical field of antennas, in particular to a dual-circularly-polarized antenna unit and a satellite-borne phased-array antenna, and the dual-circularly-polarized antenna unit comprises a single-layer feed dielectric plate; and two feed ports. A four-feed-point power division network circuit; a 3dB bridge circuit; the dipole radiation unit comprises a radiation panel which is in a plate shape as a whole; the radiation arm is arranged at the edge of the radiation panel, and the radiation arm is arranged in a bending manner; the upper end of each feed pin is connected to the radiation panel, and the lower end of each feed pin is connected to the corresponding bonding pad outlet. According to the dipole antenna, the single-layer feed dielectric plate is arranged, the four-point feed power division network circuit and the first microstrip line and the feeder line of the 3dB bridge circuit are subjected to snakelike routing design and miniaturization processing, and the radiation arms of the dipole radiation units are also subjected to three-dimensional folding miniaturization arrangement, so that the height and the radiation aperture of the dipole antenna are reduced; the height of the antenna is only 0.125 wavelengths of a central frequency point.

To provide an antenna pattern that can be manufactured easily and inexpensively while expanding the communication distance of radio waves and the direction and range in which radio waves can be transmitted and received.SOLUTION: An antenna pattern 1 includes a base material 10 and a strip-shaped dipole antenna 20 that is made of a conductive material and extends linearly, on a surface 10a of the base material 10. The dipole antenna 20 has a connection portion 25 which is located in the middle of the dipole antenna 20 in the longitudinal direction and to which an IC chip 3 is connected. A pair of long sides 21 of the dipole antenna 20 that are located at both ends of the dipole antenna 20 in the width direction and extend in the longitudinal direction of the dipole antenna 20 are each formed in a wave shape with a plurality of concave and convex shapes arranged in the longitudinal direction.SELECTED DRAWING: Figure 1

Disclosed is a novel dipole antenna design having symmetric poles, each pole having a half circle resonator and an oval resonator that are electrically connected by a straight choke section; the dipole shape permits a wideband dipole response with a transition frequency between a lower and upper frequency band. A cross bar and capacitively-coupled stubs tune at the transition frequency to create a continuous impedance and gain-bandwidth. The dipole and the crossbar and stubs are formed on opposite surface or sides of a substate. Data demonstrates the novel dipole antenna can exceed the gain-bandwidth of the state-of-the-art bowtie by approximately 5 times, that is, its gain-bandwidth is 10:1 versus the standard bowtie gain-bandwidth of 2:1 at broadside.

The invention discloses a wide-axial-ratio wave beam dual circularly polarized antenna unit with a simple structure, an antenna, an array and a radar, which are arranged in a metal back cavity through a dielectric plate, and adjacent sides of first fan-shaped dipole antennas and second fan-shaped dipole antennas of a first group of radiation elements and a second group of radiation elements are in interdigital connection. The first end of the first feed balun is connected with the circle center of the first fan-shaped dipole antenna, the other end of the first feed balun is connected with the circular hole of the second fan-shaped dipole antenna of the second group of radiation elements, the first end of the second feed balun is connected with the circle center of the first fan-shaped dipole antenna, and the second end of the second feed balun is connected with the circular hole of the second fan-shaped dipole antenna of the first group of radiation elements; the first ends of the two ohm coaxial lines are respectively connected with the second ends of the two first feed baluns and the second end of the third sub-feed balun, the dual-circularly-polarized antenna overcomes the defects of the existing dual-circularly-polarized antenna technology, and the antenna which is simple and compact in structure and can realize dual-circularly-polarized is provided by utilizing a special staggered finger-shaped structure.

The invention discloses a millimeter wave broadband dual-polarization magnetoelectric dipole antenna. The antenna comprises a first dielectric plate, a first bonding layer, a second dielectric plate, a second bonding layer, a third dielectric plate and a metal floor which are sequentially arranged from top to bottom, the upper surface of the first dielectric plate is provided with a group of electric dipoles used for radiating electromagnetic waves, a feed structure and a metal patch, and magnetic dipoles are arranged between two adjacent layers of the first dielectric plate, the first bonding layer, the second dielectric plate, the second bonding layer and the third dielectric plate. A first metal column unit used for moving out of a matching abnormal resonance point in a working frequency band is arranged between the first dielectric plate and the first bonding layer. According to the invention, millimeter wave frequency band, wide bandwidth performance, compact structure and multi-polarization characteristic can be integrated in one antenna, so that the requirements of wireless communication on high speed, low cost, large coverage, good anti-interference capability and the like can be met.

The invention discloses a broadband wide-beam millimeter wave magnetoelectric dipole antenna, and belongs to the technical field of radio frequency front-end devices. The antenna mainly structurally comprises an upper-layer dielectric plate, a middle-layer dielectric plate, a lower-layer dielectric plate, a metal radiation through hole, a metal radiation patch, a parasitic unit through hole, a parasitic unit patch, a left feed through hole, a right feed through hole, a metal feed patch, a coaxial line and a metal ground. Wide impedance bandwidth in the range of 18.2-40.3 GHz is realized when the antenna works in a millimeter wave frequency band, the relative bandwidth exceeds 75%, and the antenna has wide beam width performance; the structure is simple and manufacturing is convenient.

The invention belongs to the technical field of antennas, and provides a broadband circularly polarized millimeter wave magnetoelectric dipole antenna which comprises an excitation port, a microstrip feeder line, a 0.127 mm thick dielectric plate, a bonding layer, a metal floor, a grounding copper column, a 1.575 mm thick dielectric plate, a radiation patch and a parasitic patch. According to the millimeter wave circularly polarized antenna disclosed by the invention, the circular arc-shaped patch and the rectangular patch are effectively overlapped, and the axial ratio bandwidths of the two antennas are combined, so that a new radiation patch is formed, the broadband is realized, the axial ratio of the designed antenna unit is increased from 29.72 GHz-33.19 GHz to 27.95 GHz-43.33 GHz on the premise that the existing radiation performance is not influenced, and the antenna unit has a wide application prospect. The frequency band range of the antenna impedance matching lower than-10dB is 23.8-61.6 GHz, and the impedance matching relative bandwidth reaches 88.5%; the range of the frequency band with the axial ratio lower than 3dB is 27.95-43.33 GHz, and the relative bandwidth of the axial ratio reaches 43.1%; the frequency band range of the 3dB gain is 25.09-42.09 GHz, the relative bandwidth of the 3dB gain reaches 50.6%, the maximum gain 9.6 dBic is achieved at the 34GHz, the performance is excellent in all aspects, and the requirement of a broadband wireless communication system can be met.

The invention discloses a dual-port coaxial feed circular polarization magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave satellite communication antennas. The antenna comprises a first metal patch layer, a dielectric substrate a, a second metal patch layer, a dielectric substrate b and a metal ground which are sequentially stacked from top to bottom, the second metal patch layer comprises four radiation patches which are arranged in a rectangular array, and each radiation patch is composed of a square patch and a circular ring patch at an inner corner; a metal through hole is formed in the dielectric substrate and is connected with the radiation patch and the metal ground, so that a magnetoelectric dipole radiation path is formed; the first metal patch layer is provided with a probe patch a, the center of the second metal patch layer is provided with a probe patch b, and the probe patch a and the probe patch b form two space orthogonal inverted L-shaped feed probes through a short column and a long column respectively; and the inner conductors of the two feed ports are respectively connected with the long columns of the two probes. The antenna has the advantages of wide impedance bandwidth, wide beam coverage, low profile and easy integration, and is suitable for a low-orbit satellite communication terminal.