290 results about "Slot coupling" patented technology

The invention provides a removable first edge ring configured for pin and recess/slot coupling with a second edge ring disposed on the substrate support. In one embodiment, a first edge ring includes a plurality of pins, and a second edge ring includes one or more alignment recesses and one or more alignment slots for mating engagement with the pins. Each of the alignment recesses and alignment slots are at least as wide as the corresponding pins, and each of the alignment slots extends in the radial direction a length that is sufficient to compensate for the difference in thermal expansion between the first edge ring and the second edge ring.

A wiring board includes a dielectric substrate, a signal transmission line formed on one surface of the dielectric substrate, a grounded layer formed on the other surface of the dielectric substrate, and a connection portion for connecting portion for connecting the signal transmission line to a waveguide, the connection portion being formed on the grounded layer. The grounded layer has a slot at a position opposed to an end of the signal transmission line. The connection portion includes a first dielectric portion disposed to cover the slot of the ground layer, a second dielectric portion laminated on the first dielectric portion, and a patch conductor provided at a position opposed to said slot on an interface between the first dielectric portion and the second dielectric portion. The wiring board enables the signals to be efficiently transmitted from the signal transmission line to the waveguide with a small loss and a small reflection.

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 multilayer antenna is provided, which includes a power supply portion generating a wave, a radiating portion, and a guide portion that makes it possible to guide the wave from the power supply portion to the radiating portion. The guide portion includes: at least two stacked guide layers having parallel planes and, for each pair of adjacent layers, a transition between the adjacent layers, including a reflector engaging with a slot-coupling. For at least one pair of adjacent layers, for which the guide portion includes a non-planar reflector, the slot-coupling includes a plurality of slots. Each slot includes a main body that is elongate along at least one axis. The slots are placed on at least one row and together form a pattern that extends along the reflector and has a shape that is dependent on the shape of the reflector.

The invention relates to a vertical coupled structure applied to a millimeter-wave microstrip antenna. The vertical coupled structure comprises microstrip patch antennae, a bottom-layer medium chip substrate, a substrate cavity forming structure, a grounding plate with a gap, a top-layer chip substrate and a coplanar waveguide adapter microstrip feeder line. The microstrip patch antennae are arranged on the bottom sides of the bottom-layer medium chip substrate and the top-layer chip substrate. The substrate cavity forming structure is formed by forming a cavity in the bottom-layer medium chip substrate. The coupling caliber of the gap is located between a bottom-layer medium chip and a top-layer chip. The coplanar waveguide adapter microstrip feeder line is arranged on the upper surface of the top-layer chip substrate. The interlayer vertical interconnection problem of the antenna and a radio-frequency circuit when working frequency is within a millimeter-wave frequency range can be solved by means of the vertical coupled structure. The vertical coupled structure has the advantages of being free of weld points and parasitic radiation and capable of obtaining an even radiation pattern, overcoming the adverse influence brought by a traditional single feed mode and design limitations and the like.

The invention relates to a variable polarization panel antenna unit, which is formed by slot coupling a plurality of metal layers from top to bottom; the topmost metal layer from top to bottom is a radiation patch printed layer, and the surface of the printed layer is printed with a radiation patch; the second layer is an etched coupling slot; the third layer is a microstrip line feeder network layer which is provided with a strip line feeder network thereon; and the forth layer is a grounding plate, and the forth layer and the second and third layers form a strip line transmission line. The U-shaped slot provided by the invention uses a vertical part arm length as a moderating variable, and an impedance deploying range is expanded obviously; a double-port feed structure is adopted, when the antenna works in a circular polarization mode, the TM10 and TM01 degeneracy mode field distribution has very good symmetry, and the circular polarization orthogonal isolation is high; and a strip line feed network structure is adopted, thereby not only effectively reducing spurious radiation and back reflection, but not increasing the profile thickness of the panel antenna excessively.

The present invention relates to a dumbbell-shaped slot coupling excitation-based wideband low-profile microstrip antenna. The dumbbell-shaped slot coupling excitation-based wideband low-profile microstrip antenna comprises a rectangular radiation patch, a metallized isolation via hole array, an inner-layer metal ground board, a dumbbell-shaped coupling slot, a strip line feeder, a quasi-coaxial vertical interconnection structure, a microstrip feeder, an annular opening pad and an SMP connector for feeding. The antenna is constructed by using a laminated PCB technology; a three-dimensional transmission structure is constructed through a microstrip-quasi-coaxial metallized via hole-strip line structure; and the rectangular radiation patch is excited based on the special dumbbell-shaped coupling slot. The antenna has the advantages of compact structure, small horizontal dimension, low profile, low cost, easiness in processing, easiness in integration and the like, and can meet the use requirements of 12 GHz-to-18 GHz Ku bands and is very suitable for being applied to a Ku- band wideband phased array system.

The invention belongs to the technical field of communication, and especially relates to an LTE multi-frequency-band antenna and a mobile terminal. The LTE multi-frequency-band antenna comprises an antenna main body part, a first branch part and a second branch part; the antenna main body part is provided with a feeding point (101) and a first grounding point (102), and a first high-frequency band is covered through resonance; the first branch part and the antenna main body part are spaced by a first gap, the antenna main body part performs coupling feeding through the first gap, and is resonant at a first resonance frequency point (f1) to cover a first low-frequency band; and the second branch part and the antenna main body are spaced by a second gap, the antenna main body performs coupling feeding through a second gap, and is resonant at a second resonance frequency point (f2) to cover a second low-frequency band. The technical scheme adopts a double coupling feeding mode, the antenna bandwidth can be effectively increased, an antenna resonance main body is relatively clear, and antenna analyses and debugging are easy.

The invention discloses a differential filtering microstrip array antenna having high common-mode rejection. The antenna mainly comprises three layers of structures as follows: a feed network, a ground comprising a slot structure as well as four patch radiation units containing H-shaped resonator stimulation. The core content of the antenna is as follows: the antenna adopts the multiple layers of structures, first two orders of resonators are arranged at the first layer and the second layer respectively and are coupled through a slot at the second layer, the natural high common-mode rejection effect can be realized, and the natural 180-degree difference can also be formed at two ends of a second-order resonator by the aid of slot coupling, so that the second-order resonator has the Balun function; meanwhile, the second-order resonator is designed into the H shape and can further realize a power quartering function. Under the condition that no additional cascade filters exist and the area is increased, the antenna has the good filter characteristic and is minimized. In general, the antenna has the characteristics of high selectivity, high common-mode rejection, high gain, small size and the like.

The invention provides a back cavity slot antenna dual-frequency millimeter wave antenna based on a substrate integrated waveguide (SIW). The antenna comprises a radiation layer, a feed layer and a composite conversion structure, wherein the radiation layer is composed of a first metal coating and a first rectangular dielectric plate, the first metal coating is etched with two mutually parallel rectangular radiation slots, the first rectangular dielectric plate is provided with first metalized through holes for forming a circular SIW resonant cavity; the feed layer is composed of a second rectangular dielectric plate, a second upper metal coating and a second lower metal coating, the second rectangular dielectric plate is provided with second metalized through holes distributed in a gradually changing U-shaped manner so as to form a substrate integrated waveguide, and the second upper metal coating is etched with a rectangular coupling slot for slot coupling feed. The back cavity slotantenna dual-frequency millimeter wave antenna realizes the performance of millimeter wave dual-band radiation, and solves a technical problem that the dual-frequency millimeter wave antenna in the prior art is narrow in impedance bandwidth, low in antenna radiation gain and efficiency and complex in feed structure.

The invention provides an antenna structure and a communication terminal. The antenna structure comprises a first antenna irradiator, a second antenna irradiator, a matching network, a tuning circuit,an inductor and a signal source; a second end of the first antenna irradiator is coupled with a second end of the second antenna irradiator through a gap; a first end of the matching network is connected with a feeding point; a second end of the matching network is connected with a first end of the signal source; a first end of the tuning circuit is connected with a first access point of the first antenna irradiator; a second end of the tuning circuit is connected with a second access point of the second antenna irradiator; a third end of the tuning circuit is grounded; a first end of the inductor is grounded; a second end of the inductor is connected with the second access point under the condition that the feeding point is arranged on the first antenna irradiator, and the second end ofthe inductor is connected with the first access point under the condition that the feeding point is arranged on the second antenna irradiator; and a second end of the signal source is grounded. The antenna structure is capable of improving the medium frequency of high frequency efficiency of the antenna.

The invention discloses a dual-frequency dual-linear polarization phased-array antenna and an antenna unit, and the antenna unit comprises a hierarchical structure with a plurality of metal layers, and dielectric layers which are arranged between adjacent metal layers and are used for isolation, wherein the metal layers comprise a parasitic patch, a radiation patch, a transmitting feed network, afirst grounding metal plate, a second grounding metal plate and a receiving feed network, wherein the parasitic patch and the radiation patch are rectangular metal patches; the transmitting feed network feeds the parasitic patch and the radiation patch in an electromagnetic coupling mode; a gap is etched in the first grounding metal plate and is a common metal ground of the radiation patch, the transmitting feed network and the receiving feed network; a via hole opposite to the gap in the first grounding metal plate is etched in the second grounding metal plate; and the receiving feed networkfeeds the parasitic and radiation patches in a slot coupling mode. According to the invention, the low profile of the antenna and the performance of easy rear-end radio frequency integration can be realized through the microstrip patch, and the coverage of receiving and transmitting double frequency bands can also be realized.

The invention discloses a gap waveguide series feed high-gain millimeter wave antenna, and the antenna comprises a high-efficiency radiation unit subarray layer, a gap waveguide slot-coupling series feed network and a waveguide slot-coupling feed structure. The high-efficiency radiation unit subarray layer comprises a rectangular metal medium resonant cavity and a metal layer which is disposed on the upper surface of the rectangular metal medium resonant cavity in a coated manner and is provided with four rectangular slots. A wide side of a rectangular waveguide is provided with a coupling slot, so as to achieve the feed of the center of each gap waveguide. The plurality of gap waveguides are laterally arranged in an aligned manner to form a two-dimensional feed network. The wide side of each gap waveguide is provided with a coupling slot, so as to achieve the feed of each corresponding radiation subarray of the upper layer. The subarrays are excited to radiate energy to a space. The antenna provided by the invention works at the millimeter wave frequency band nearby 77GHz, is high in efficiency, is good in radiation characteristics, is low in cost, is easy to machine, is small in size, is high in stability, and is suitable for batch production.

The invention relates to the field of waveguide-microstrip transition structure in passive devices, and discloses a waveguide-microstrip conversion and power divider which is based on a double-layer substrate and has a slot coupling structure. The waveguide-microstrip conversion and power divider comprises double-layer substrates (1, 2), a microstrip (3) positioned on the upper surface of the upper-layer substrate (1), a first grounding metal plate positioned between the upper-layer substrate (1) and the lower-layer substrate (2), and a waveguide end (7) connected with the lower surface of the lower-layer substrate (2) through a second grounding metal plate, the first grounding metal plate is provided with a slot, the lower surface of the lower-layer substrate (2) is provided with a window which has the same shape and size as those of a cavity in a waveguide tube, and a frequency adjustment unit (5) is arranged at the window. The waveguide-microstrip conversion and power divider is suitable to be used for the feeding of microstrip antenna arrays with waveguide feeding forms, and can be used as a waveguide-microstrip transformation signal distributor in a radio frequency circuit.

The invention belongs to the technical field of anteannae, and discloses a liquid metal-based frequency- reconfigurable slot couple antenna, which comprises a feed network and a radiating part, The feeding network is a lower layer dielectric substrate, and the radiation part is an upper layer dielectric substrate. A rectangular microstrip patch is printed on the upper surface of the upper dielectric substrate, and a microfluidic channel annular groove filled with liquid metal or Teflon solution is engraved inside the rectangular microstrip patch. The invention adopts liquid metal to realize the reconfigurable characteristic. Compared with the traditional reconfigurable antenna, a pair of antennas can be used to realize the reconfigurable characteristic, and the structure is simple. Liquidmetal reconfigurable is simpler than electronic switch in realizing reconfigurable and wider tuning range. The liquid metal is braked by microfluidic channel, which is easy to realize and control compared with other braking methods. Gallium-indium-tin alloy is used as liquid metal, which is low cost and non-toxic; A large bandwidth is realized by using slot coupling feed.

The invention discloses a transmit-receive sharing dual-polarization waveguide array antenna, which comprises a dual-polarization antenna unit and a waveguide feed network, wherein the dual-polarization antenna unit is composed of a radiation port, a main waveguide, a transition waveguide, a vertical polarization waveguide, a horizontal polarization waveguide and a polarization switching waveguide. A method of a horizontal polarization and a vertical polarization sharing the same one aperture is utilized, so that the aperture utilization efficiency of the antenna is increased. The horizontal polarization and the vertical polarization adopt a waveguide feed mode, so that the loss of the feed network is reduced, and the antenna has high antenna efficiency. Two polarizations to a radiation unit adopt the same polarization feed mode, wherein the vertical polarization is direct feed, the radiation to the horizontal polarization adopts the vertical polarization feed, and the horizontal polarization of the radiation is realized through a waveguide step transition and slot-coupling mode.

The invention provides a substrate integrated waveguide device and a substrate integrated waveguide filter. The substrate integrated waveguide filter includes at least substrate integrated waveguide resonant cavity assemblies, a surface metal layer, a bottom surface metal layer and an intermediate metal layer, wherein single substrate integrated waveguide resonant cavity assembly includes a firstdielectric substrate layer, a second dielectric substrate layer and a metal layer; the metal layer is arranged between the first dielectric substrate layer and the second dielectric substrate layer; the metal layer is provided with a C type slit; the first dielectric substrate layer, the second dielectric substrate layer and the metal layer are each provided with metal through holes for preventingenergy leakage; the C type slit is coupled with the energy of the upper and lower layers; and the metal layer, the adjacent metal layer and the dielectric substrate layers between the metal layer andthe adjacent metal layer form a 1/2N mode substrate integrated waveguide structure. The whole substrate integrated waveguide filter utilizes the reasonable stacked multi-layer structure, and can reduce the volume of the integrated waveguide resonant cavity on the premise of guaranteeing that the substrate integrated waveguide performance is not changed, thus effectively solving the problem that the structural size of the metal waveguide is too large and is not easy to be integrated.

The invention discloses an X-band high-gain broadband lens antenna based on a phase gradient multilayer super-surface structure. The antenna exhibits a broadband characteristic by using a microstrip antenna based on H-type slot coupling as a feed source. Furthermore, a super-surface structural unit having a phase gradient variation feature is designed and arranged in accordance with a parabolic focusing equation. Therefore, good low profile characteristics are obtained. A combined super-surface transmission array can convert a normally incident quasi-spherical wave into a plane wave, thereby obtaining a high-gain antenna. The lens antenna operates in the X-band with a center frequency of 10 GHz and the relative bandwidth reaches 20.6%. The antenna gain can be increased from 8.25 dB to 18.98 dB, and the side-lobe level of the super-surface focusing is less than -14.3dB. The simple three-dimensional structure and compact size provide a new method for implementing high-gain antennas, andthe antenna is good in application prospect in field of long-distance wireless communication.

The invention relates to a ridge waveguide bias slot coupling micro-strip oscillator dual polarized antenna. The antenna comprises two parallel arranged ridge waveguide bias slot coupling micro-strip oscillator dual polarized antenna units, more than two positive metal pasters and more than two negative metal pasters, wherein the positive metal pasters and the negative metal pasters are uniformly arranged on the outer side face of a micro-strip plate. Centers of the positive metal pasters correspond to more than two radiation seams on a first radiating waveguide. Centers of the negative metal pasters correspond to more than two radiation seams on a second radiation waveguide. The positive metal pasters and the negative metal pasters are coupling micro-strip oscillators, thereby achieving dual polarization. According to the invention, a ridge waveguide structure is adopted, thereby achieving dual polarization and low profiles; I-shaped coupling seams are used for direct coupling feeding, thereby achieving integrated design of antennas and feeder lines; and the antennas can freely from large plane arrays as units.

The utility model discloses a dual-polarized slot coupling antenna which comprises a feed network and a radiation sticker, wherein the feed network comprises a substrate, wherein the lower surface of the substrate is completely covered by copper, so that a first copper-covered region is formed; the upper surface of the substrate comprises a second copper-covered region and two independent rectangular regions with the same structures; each rectangular region comprises an upper edge, a bottom edge and two side edges; copper sinking via holes which are uniformly arrayed are formed in the upper edge and the two side edges; a slot region and a feed end are arranged in a region surrounded by all the copper sinking via holes; the slot region is close to the center of the substrate; the slot region is positioned in a positive projection region of the radiation sticker on the substrate; the feed end is close to the bottom edge; the part below the feed end in the rectangular region is a blank region. The dual-polarized slot coupling antenna has the advantages that all the back part of the feed network is ground plane metal; a feed microstrip line is arranged on the upper surface of the feed network, so that the feed network cannot radiate the back surface, the front-to-back ratio cannot be affected, and the influence due to an antenna mounting environment can be avoided.

The invention provides an antenna structure and a communication terminal. The antenna structure comprises a first antenna radiator, a second antenna radiator, a first impedance matching circuit, a second impedance matching circuit and a signal source, The first antenna radiator and the second antenna radiator are coupled through a slot. One end, away from the gap, of the first antenna radiator isgrounded, and a feeding point is arranged on the first antenna radiator; one end, away from the gap, of the second antenna radiator is grounded, and the absolute value of the difference value of the length of the second antenna radiator and the 1/4 wavelength of the third frequency band is smaller than a first specific value. The first end of the first impedance matching circuit is connected withthe feed point, and the second end of the first impedance matching circuit is connected with the first end of the signal source. The first end of the second impedance matching circuit is connected with the third end of the first impedance matching circuit, and the second end of the second impedance matching circuit is grounded. The second end of the signal source is grounded. According to the embodiment of the invention, the voltage standing wave ratio of the antenna can be reduced, and the performance of the antenna is improved.

The invention discloses an integrated substrate slot waveguide feed slot coupling metasurface antenna. The integrated substrate slot waveguide feed slot coupling metasurface antenna comprises an antenna radiation structure and an integrated substrate slot waveguide structure, wherein the antenna radiation structure and the integrated substrate slot waveguide structure are sequentially arranged andoverlapped from top to bottom; the integrated substrate slot waveguide structure includes an electromagnetic bandgap structure for shielding electromagnetic radiation energy and a feed structure fortransmitting energy to the antenna radiation structure. The feed structure comprises a second dielectric plate, the upper surface of the second dielectric plate is coated with a first copper-coated layer, and a slot is etched in the middle portion of the first copper-coated layer; and the lower surface of the second dielectric plate is provided with a microstrip feeder. The integrated substrate slot waveguide feed slot coupling metasurface antenna has the characteristics of a low profile, a wide bandwidth, a high gain, easiness in processing and the like, and can be used as a 5G millimeter wave antenna.