65 results about "Broadband microstrip antenna" patented technology

The invention discloses a multilayer broadband microstrip antenna, comprising an upper dielectric baseplate, a middle dielectric baseplate, a lower dielectric baseplate, an upper low dielectric constant insulating dielectric layer, a lower low dielectric constant insulating dielectric layer, a reflection plate and a feed probe, wherein rectangle radiators of metallic copper pasters are arranged on the lower surface of the upper dielectric baseplate and the upper surface of the middle dielectric baseplate and provided with U-shaped slot structures with different sizes respectively. Due to a special double-layer inverted U-shaped slot coupling feed way, the symmetry of directional diagrams on an E surface or H surface of the antenna is good, thus ensuring that the antenna has more consistent performances in more directions, and having more actual meanings as an exploration antenna and a communication antenna. The reflection plate with an EBG (electromagnetic band gap) structure can preferably restrain backward radiation in the specified frequency relative to a traditional metal reflection plate, thus improving the directivity of the antenna, thereby further improving the gain of theantenna.

A miniaturized ultra-wideband microstrip antenna, includes: a dielectric substrate; a feed line disposed on the dielectric substrate, and supplying an electromagnetic energy supplied from an external power source; a main radiating element radiating the electromagnetic energy inputted by the feed line; and at least one sub-radiating element disposed in proximity to the main radiating element for multi-radiation. Also, the antenna further includes at least one connection plate electrically connecting the main radiating element to at least one of the sub-radiating elements. The miniaturized ultra-wideband microstrip antenna can also be made ultralight, and include additional sub-radiating elements besides the main radiating element, whereby multi-radiation in UWB's range can be attained.

The invention relates to a T-shaped/inclined-L-shaped current guide slit dual-frequency broadband dual-circular polarization microstrip laminated antenna and belongs to the broadband microstrip antenna field. The microstrip laminated antenna is provided with an upper layer dielectric substrate, a lower layer dielectric substrate and a grounding plate; an upper layer patch is laid on the upper surface of the upper layer dielectric substrate; the upper layer patch is a hexagon-shaped radiation patch, circular grooves being cut at upper and lower opposite angles, rectangular grooves being cut at left and right opposite edges; oblique L-shaped slits are formed between the circular grooves and the rectangular grooves; T-shaped slits or slits of which the shape is similar to T are formed between the oblique L-shaped slits; two ends of the horizontal part of each slit of which the shape is similar to T are provided with folded line structures; through the loading of the T-shaped slits, the slits of which the shape is similar to T and the oblique L-shaped slits, the flowing direction of current at the surface of the antenna can be guided, and therefore, the gain performance of the antenna can be optimized; a lower layer patch is laid on the upper surface of the lower layer dielectric substrate; the lower layer patch is a hexagon-shaped radiation patch, circular grooves being cut at right and left opposite angles, rectangular grooves being cut at upper and lower opposite edges; the upper layer patch is arranged in a leftward eccentrically manner relative to the lower layer patch, so that the resistance matching of the single-feed laminated multi-frequency antenna can be realized; and a coaxial feed opening is formed at the upper layer patch.

The invention discloses an improved broadband microstrip antenna unit, which mainly solves the problems of narrow band width, high cross polarization and backward radiation of conventional microstripantennas. The antenna of the invention comprises a radiator (1), a dielectric substrate (2), an upper floor plate (3), a feed structure (5) and a lower floor plate (6). The upper floor plate is positioned between the dielectric substrate and the feed structure, and the lower floor plate is located on the lower surface of the feed structure. The upper floor plate is provided with a transverse gap (4) through etching. The radiator comprises an electric dipole (11) and a magnetic dipole (12). The electric dipole is composed of N pairs of rectangular patches arranged on both sides of the transverse symmetry axis of the transverse gap and horizontally arranged on the upper surface of the dielectric substrate. The magnetic dipole is composed of M metal connectors inside the dielectric substrate.The electric dipole is connected with the upper floor plate through the magnetic dipole, and the magnetic dipole and the electric dipole are arranged perpendicular to each other. The improved broadband microstrip antenna unit is improved in working bandwidth, is reduced in cross polarization and backward radiation, and can be applied to 5G communication and radar systems.

The present invention discloses a miniature broadband microstrip antenna mainly for solving the problem in the prior art that the microstrip antenna is large is size and narrow in bandwidth. The antenna comprises a radiation array (1), an upper-layer dielectric substrate (2), a metal grounding plate (3), a lower-layer dielectric substrate (4), a microstrip feeder line (5) and a feed point (6). The radiation array is located on the upper surface of the upper-layer dielectric substrate and is connected with the metal grounding plate via a metal via hole (21) on the upper-layer dielectric substrate, the metal grounding plate is located between the two layers of dielectric substrates, the sizes of the radiation array, the dielectric substrates and the metal grounding plate are same, and the microstrip feeder line is located on the lower surface of the lower-layer dielectric substrate and is connected with the feed point. A rectangular slit (31) is etched on the metal grounding plate, by the rectangular slit, the electromagnetic energy is coupled to the radiation array from the microstrip feeder line, at the same time, a plurality of work modes are generated. The miniature broadband microstrip antenna of the present invention has the characteristic of being good in miniaturization, bandwidth and pattern characteristics, and can be used for the wireless communication and radar systems.

The invention discloses a broadband micro-strip antenna array coupling structure, and aims to provide a micro-strip patch antenna array, which is simple in structure, is conveniently and quickly debugged and can effectively reduce side-lobe levels of antennae. According to the technical scheme, a micro-strip patch antenna array body consists of a plurality of antenna radiation units longitudinally arranged on a dielectric support, wherein a coupling groove is formed below a radiation patch of each antenna radiation unit; the length of the coupling groove of each antenna radiation unit is progressively decreased from middle to two ends, so that a gradually variable coupling groove length aperture coupling form is achieved; the antenna radiation units with the coupling grooves which are equal in length are arranged in pairs on the array body; the lengths of the coupling grooves which are symmetrically formed in pairs from left to right are equal; the patch of each antenna radiation unit feeds through a unit feeder perpendicularly passing through the corresponding coupling groove. According to the broadband micro-strip antenna array coupling structure, the lengths of the coupling grooves are progressively decreased from middle to two ends, so that excitation current for the coupling of the feeders to the patches is changed, and the side-lobe levels of the antennae are reduced.

The invention provides a miniaturization double double-band-elimination ultra-wide-band microstrip antenna, and relates to the filed of ultra-wide-band wireless communication. The miniaturization double-band-elimination ultra-wide-band microstrip antenna comprises a dielectric substrate, a feeder line which is arranged on the dielectric substrate and is used for receiving electromagnetic waves, a radiating unit which is connected with the feeder line and is used for radiating the electromagnetic waves, a grounding plate which is arranged on the lower surface of the dielectric substrate, and two 6-shaped resonance circuits which are arranged on the dielectric substrate and are located on two sides of the feeder line in an axial symmetry mode. The upper end and the lower end of the radiating unit are respectively provided with a non-equivalent-width groove which is shaped like a Chinese character 'gong' and an outer-convex-shaped transition groove. The grounding plate is provided with a stepped groove which is matched with the outer-convex-shaped transition groove. The grounding plate and the radiating unit are designed to be two transition grooves, a standing-wave ratio band width is made to reach 2.4GHz - 11.6GHz, and a 131% relative standing-wave ratio band width is achieved. The non-equivalent-width groove which is shaped like the Chinese character 'gong' and the two 6-shaped resonance circuits respectively correspond to one fourth of 3.3GHz - 3.8GHz and one fourth of 5.0GHz - 6.0GHz, and the trapped wave function and the double-band-elimination design of the antenna are achieved.

The invention discloses a compact broadband microstrip antenna with harmonic suppression. The antenna comprises a single-layer dielectric substrate, and an antenna unit arranged on the dielectric substrate. The antenna unit comprises a rectangular patch, two quarter-wavelength resonators and a ground short-circuit pin. The first quarter-wavelength resonator and the second quarter-wavelength resonator are unequal in length and unequal in width and parallel to the radiating side of the rectangular patch, the ground short-circuit pin is inserted between the two quarter-wavelength resonators, andthe rectangular patch is excited by coupling feeding. The feeding point of the antenna is arranged on one quarter-wavelength resonator and fed by a copper axis probe; the rectangular patch in the antenna element is an ordinary patch antenna, and the first and second quarter-wavelength resonators have two resonant points offset from the center frequency, but do not participate in radiation. The antenna of the invention has the advantages of low cross section and simple structure, effectively increasing the antenna band width, and simultaneously having the advantages of high harmonic suppression.

The invention discloses an ultrahigh-frequency broadband microstrip antenna for partial discharge monitoring of a switchgear, and belongs to the field of an electrical equipment insulation state online monitoring technology. The antenna structurally comprises an antenna metal radiation patch, a medium substrate, a metal ground plate, a microstrip feed line and an SMA joint. The antenna provided by the invention has the advantages of wide frequency band, small standing-wave ratio, convenient impedance matching, low manufacturing cost, convenient installation, unaffected normal operation of monitoring equipment, and the like, and can meet the requirement for ultrahigh-frequency online monitoring of partial discharge of a switch gear used for a transformer station.

The present invention discloses a miniaturization broadband microstrip antenna, comprising a radiation patch configured to form two axially symmetric rectangular grooves along a narrow side direction on a rectangular patch, the radiation patch having a top and a bottom which have a same stair-stepping corner cut structure. An antenna constructed by the radiation patch with a rectangular gradual corner cut structure and an E-shaped grooving structure may only consist of the radiation patch, a dielectric slab, a metal floor and a probe. The radiation patch is located at the right side of the dielectric slab, the metal floor is located at the back side of the dielectric slab, and the probe is connected with the radiation patch through punching from one side of the metal floor. According to the invention, the flow direction of the microstrip antenna current is changed, and a plurality of resonance frequency points is increased, therefore broadband and miniaturization of the microstrip antenna are achieved.

The invention discloses a low-profile broadband microstrip antenna based on a differential feed technology. The low-profile broadband microstrip antenna comprises an upper dielectric plate, a lower dielectric plate and metal patches printed on the surfaces of the upper dielectric plate and the lower dielectric plate, wherein the upper dielectric plate and the lower dielectric plate are connected through four short-circuit grounding columns and two coaxial inner cores for feeding; the upper layer metal patch comprises a metal patch which is printed at the upper surface of the upper dielectric plate and is shaped like a Chinese character 'wang' and two concave-shaped metal patches which are printed on the upper surface of the upper dielectric plate, the lower surface of the upper dielectricplate is provided with two circular metal patches; and the metal patch on the lower dielectric plate is a metal floor. The two coaxial inner cores pass through an air gap between the lower dielectricplate and the two layers of dielectric plates, are respectively in contact with the two circular metal patches printed on the upper dielectric plate and are combined with the metal floor of the lowerdielectric plate to form two feed ports. The antenna adopts differential feed, has the advantages of a wide frequency band, a low section, a high gain, a simple structure and the like, and is suitablefor the wireless communication fields of base station communication, wireless local area networks and the like.

The invention provides a broadband microstrip antenna restraining surface waves. The broadband microstrip antenna restraining the surface waves belongs to aperture-coupled microstrip antennas, and comprises a patch printed board (1), a feed printed board (2) and a metal base board (3), wherein the patch printed board (1), the feed printed board (2) and the metal base board (3) are stacked plate materials with identical boundary dimensions. A radiation patch (4) is laid on the lower surface of the patch printed board, a microstrip line (5) is laid on the lower surface of the feed printed board (2), a metal ground layer is laid on the upper surface of the feed printed board (2), and a coupling clearance (6) and a clearance (7) shaped like a Chinese character 'jing' are etched in the metal ground layer. The coupling clearance (6) is located in the center of the metal ground layer and is surrounded by the clearance shaped like a Chinese character 'jing'. The broadband microstrip antenna restraining the surface waves has the advantages of being capable of effectively restraining the loss of the surface waves, enabling the operation bandwidth of the antenna to be broadened, and improving the consistency of the antenna performance of an in-band voltage standing wave ratio, gain, a directional diagram and the like.

Disclosed are a wide-band microstrip antenna and its feeder matching equipment and making method. The wide-band microstrip antenna comprises ground plate and microstrip paster unit, wherein between the ground plate and the microstrip paster unit has a distance and at least a supporting component for supporting and keeping the distance, and the supporting component is insulted with the group plate and microstrip paster unit. For the feeder matching equipment of the wide-band microstrip antenna, co-axial feeding lines goes through the ground plate and electrically connected with microstrip paster unit to make the input impedance of feeding point match with the feeding lines' impedance. The invention has the advantages of reducing radiation loss and of improving radiation efficiency.

There is provided a wideband patch antenna and an antenna array. The antenna includes a dielectric substrate of a rectangle shape, a radiation patch formed on a top surface of the dielectric substrate, a coupling patch formed on the top surface of the dielectric substrate and extending from a side of the dielectric substrate to a position from the radiation patch by a distance, a metal support arranged on the lower surface of the dielectric substrate and extending from the edge of the lower surface of the dielectric substrate downward to the ground, a layer of air having a predetermined thickness being formed between the lower surface of the dielectric substrate and the ground. According to the embodiments, it is possible to improve the directivity of the wideband microstrip antenna while maintaining its small size.

The invention relates to the technical field of antennas, and particularly relates to a miniaturized ultra-wideband microstrip antenna. The antenna comprises a substrate, and a radiation patch and a grounding part are arranged on the substrate; the radiation patch comprises a monopole and a coupling structure; the coupling structure comprises a first part and a second part; the first part and thesecond part are arranged on two sides of the substrate; the first part comprises a second sub-patch, two parallel first sub-patches and two parallel third sub-patches, and the two first sub-patches and the two parallel third sub-patches are arranged on the two sides of the second sub-patch respectively; and the second part is a U-shaped structure. A size of the ultra-wideband microstrip antenna isonly 20mm*34mm, the ultra-wideband microstrip antenna has the small size, and the ultra-wideband microstrip antenna also has advantages of an ultra-wideband, a high gain and good omnidirectivity under the condition that the size is reduced. According to the antenna, an effective working frequency band is 3.05-11.08GHz, a total bandwidth is 8GHz, an average gain is higher than 5dBi, a peak value is 8.2dBi, and an omnidirectional radiation characteristic is achieved at 3.1-6GHz.

The invention discloses a novel balance Vivaldi antenna adopting an extra dielectric layer loading technology and a mixed type ripple edge, relates to the field of an antenna, and aims to solve the problem of severe beam deflection of the existing balance broadband microstrip antenna which works in a millimeter wave band. A conductor metal layer is attached between two dielectric substrate layers; two floor metal layers are attached on the two sides of the two dielectric substrate layers respectively; two extra dielectric layers are attached on the two sides of the two floor metal layers respectively; the two dielectric substrate layers are both rectangular structures; arc-shaped nicks are formed in the centers of the rectangles; the conductor metal layer adopts a comb-shaped structure; an M-shaped groove is formed in the comb head of the comb-shaped structure; multiple rectangular grooves are uniformly formed from one side to the comb tail of the M-shaped groove; the comb tail of the comb-shaped structure is connected with a comb handle; the comb heads of the floor metal layers are connected with a strip line structure through a balance-imbalance converter; and a region clamped between the comb head of the conductor metal layer and the comb heads of the floor metal layer coincide with the arc-shaped nicks of the dielectric substrate layers. By virtue of the novel balance Vivaldi antenna, beam stability can be improved.

The invention relates to a 5G application-oriented shared two-unit microstrip MIMO antenna based on a radiation structure, and the antenna comprises three layers of dielectric plates, i.e., a first dielectric plate, a second dielectric plate and a third dielectric plate, which are sequentially stacked from the top to the bottom; the dielectric plates are the same in size and material, an incomplete circular metal patch is arranged on the upper surface of the first dielectric plate, an arc-shaped notch is formed in the edge of the circular metal patch, and a first metal patch and a second metalpatch are distributed among the first dielectric plate, the second dielectric plate and the third dielectric plate; the invention relates to the broadband microstrip antenna. By adopting an aperturesharing technology, miniaturization of the antenna structure is realized; the miniaturization degree can reach (50 +/-0.5)%, the common bandwidth of the two unit antennas can reach (13.4 +/-0.1)%, theantenna has the characteristics of unidirectional radiation and low cost, and by adopting a coupled feeding technology, the port isolation degree and the far-field radiation gain between the unit antennas are improved.

The invention discloses a small-size UWB (ultra wide band) microstrip antenna applied in the field of railway communication, and the microstrip antenna comprises a substrate, a radiation patch locatedon the front surface of the substrate, and a correction ground which is located on the back surface of the substrate. The central axis of the radiation patch and the central axis of the correction group are located on the same straight line, and the radiation patch sequentially comprises a radiator, a gradual change part and a feed part, wherein the radiator, the gradual change part and the feedpart are sequentially connected. The radiator comprises a first part and a second part, which are connected with each other. The second part is shaped like T, and the gradual change part is an integrated body of a rectangle and an inverted isosceles trapezoid. The feed part is a fine and long rectangle, and the correction ground is concave. The antenna solves the problems that an antenna used in the field of railway communication is bigger in size, is difficult for installation and integration, is narrower in communication band, is poor in accuracy and is lower in gain.

The invention discloses a polarization-agility microstrip antenna and relates to the field of microstrip antennas. The polarization-agility microstrip antenna comprises a dual-polarization microstrip antenna, a phase-shifting power division network, a first feed network and a second feed network, wherein a logic control unit is arranged in the phase-shifting power division network, phase-shifting power division network divides radio frequency signals input by an input port arranged in the phase-shifting power division network into signals with identical amplitude and phase differences of -90 degrees, 0 degree, 90 degrees and 180 degrees through the electric-regulation control by the logic control unit, the two paths of signals of the phase-shifting power division network are output to an output port I and an output port II arranged in the phase-shifting power division network, the output port I is connected with the first feed network, the output port II is connected with the second feed network, and the first feed network and the second feed network are respectively connected with an input port I and an input port II arranged in the dual-polarization microstrip antenna. The broadband microstrip antenna is simple in structure, convenient to use and capable of achieving optional polarization agility.

The invention relates to a multi-frequency band ultra wideband microstrip antenna, which comprises a dielectric layer, wherein a radiation patch and a microstrip feeder line connected with the radiation patch are arranged at one side of the dielectric layer; a grounding plate is arranged at the other side of the dielectric layer; the radiation patch comprises a middle radiation arm and L-shaped radiation arms arranged at the left and right sides of the middle radiation arm; the middle radiation arm comprises a rectangular patch and a rectangular ring in mutual connection; the L-shaped radiation arms comprises a transverse arm and a longitudinal arm; each of the middle radiation arm and the two L-shaped radiation arms generates resonant frequency; the lower side edge of the transverse arm of the L-shaped radiation arm at the right side and the upper side edge of the grounding plate are coincident; the lower side edge of the transverse arm of the L-shaped radiation arm at the left side is coincident with the upper side edge of the transverse arm of the L-shaped radiation arm at the right side.

The invention relates to an ultra-wideband microstrip antenna, in particular a multi-order alternately-nested recursive hollowed ring ultra-wideband antenna. The multi-order alternately-nested recursive hollowed ring ultra-wideband antenna has the advantages of high impedance bandwidth, low return loss, high gain, excellent radiation characteristic, simple structure and easiness in processing, and can be excellently applied to UWB (Ultra-Wide Band) communication systems. A dielectric substrate is provided; a favorable conductor layer is laid on the upper surface and the lower surface of the dielectric substrate respectively; the favorable conductor layer at the upper surface of the dielectric substrate is provided with a radiating patch which is provided with a multi-order alternately-nested recursive hollowed ring and adopts a rectangular microstrip feeder to perform feeding; the basic structure contours of multi-order alternately-nested recursive structures are square and circular; a circular groove is formed at the interior of the square radiating patch so as to form a hollowed ring structure, and next-order square and circular alternately-nested structures are formed sequentially at the interior of the circular groove so as to from recursive hollowed ring structures, and therefore, the multi-order alternately-nested recursive hollowed ring can be formed; and the favorable conductor layer at the lower surface of the dielectric substrate is provided with multi-order ladder-shaped gradient electromagnetic coupling ground plates which are in bilateral symmetry; and the width of the multi-order ladder-shaped gradient electromagnetic coupling ground plates varies gradually.

A broadband microstrip antenna, comprising an insulating substrate, a grounding sheet and a radiation sheet, the insulating substrate has a first surface and a second surface opposite to the first surface, the grounding sheet is made of conductive material And formed on the first surface, the radiation plate is made of conductive material and formed on the second surface, and includes a feed-in extending inward from the edge of the second surface and crossing the ground plate and supplying signal input arm, a radiation body extending from the feeding arm away from the ground plate, and a notch extending from a side of the radiation body toward a first direction, and the notch makes the side of the radiation body present a meandering shape In turn, the current distribution on the surface of the radiating body is changed, resulting in a high operating bandwidth.