32 results about "Microstrip patch array" patented technology

A sub-array of slot-coupled microstrip antennas fed using microstrip lines on an opposing substrate. Also provided is an omni-directional antenna comprised of six of the sub-arrays arranged in a hexagonal fashion. The gain of the antenna is ˜6 dB with a 3 dB elevation beam width of ˜30 degrees. The design provides constant beam angle over frequency, which is important for frequency-hopping applications, and the potential to add beam control to mitigate jamming in different sectors.

The invention discloses an ultra-compacted microstrip patch array antenna. The ultra-compacted microstrip patch array antenna comprises a dielectric plate, an antenna array and a metal floor, wherein the antenna array and the metal floor are arranged on the dielectric plate; the antenna array consists of more than two antenna array units; each antenna array unit comprises a feeder line and a radiation patch; a decoupling network is arranged between the radiation patches of every two antenna array units; and a certain gap is reserved between the decoupling network and the two radiation patches; and each decoupling network adopts an interdigital structure formed by a left comb tooth and a right comb tooth which are inserted oppositely. According to the ultra-compacted microstrip patch array antenna, the electromagnetic mutual coupling between the arrays can be greatly lowered while the excellent bandwidth performance of the antenna unit is ensured, so that the miniaturization of the antenna is realized while certain performance is ensured, so as to realize the ultra-compacted structure of the array antenna.

The invention belongs to the technical field of antenna, and provides an LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit, for solving the contradiction that a current circularly polarized microstrip patch array antenna needs to consider both low profile, circular polarization, high gain, and broadband development. In the LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit, an upper layer of radiation metal patch and a lower layer of radiation metal patch are different in the size; the resonant frequency point of the lower layer of radiation metal patch is higher than the center frequency of the antenna unit; the resonant frequency point of the upper layer of radiation metal patch is lower than the center frequency ofthe antenna unit; the chamfer size of the lower layer of radiation metal patch is greater than the chamfer size of the upper layer of radiation metal patch; and the chamfer size of the upper and lower layers of radiation metal patches enables the single point feed square patch to generate two orthogonal degeneration modes with the same amplitude to form a 90 DEG phase difference. The LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit utilizes the upper and lower radiation metal patches with the same shape and different size, thus being able to preferably consider both the performance demands for low profile and circular polarization of the microstrip patch chip, and greatly improving the frequency band bandwidth of the antenna.

The invention relates to a vertical polarization directional-printing filtering antenna, which comprises a three-layer structure, wherein the middle layer is a medium layer; the front side of the medium layer is an upper-surface metal layer (1); all the back of the medium layer is a metal layer which is called a lower-surface metal layer; one end of the upper-surface metal layer (1) is connected with a microstrip line (4); the microstrip line (4) is connected with a SIW (Substrate Integrated Waveguide) transmission line by a microstrip transition line (5); the SIW transmission line is provided with an SIW inductive window filter coupling window (8) formed by a metallized through hole (7) and with an SIW inductive window filter resonant cavity (9); the SIW transmission line is connected with a crossfeed microstrip patch array by a graded-index microstrip line (6); and the crossfeed microstrip patch array is formed by the feeding of a metal patch (2) by a metal connecting line (3). The antenna is easy to manufacture, has high machining precision and is especially suitable for high frequency, such as a Ku waveband.

The invention discloses a vertically polarized omnidirectional printing filtering antenna which is prepared by employing printed circuit board (PCB) technology. The antenna is characterized in that: the antenna comprises a lower surface metal layer, a dielectric layer and an upper surface metal layer from the top down; one end of the upper surface metal layer is provided with a microstrip line which is connected with an SIW (substrate integrated waveguide) transmission line through a microstrip gradually change line, and the SIW transmission line is connected with a first series feed microstrip paster array through a gradually change printing parallel wire; the lower surface metal layer is provided with a second series feed microstrip paster array. The vertically polarized omnidirectional printing filtering antenna has the characteristics of easy preparation and high processing precision, and is especially suitable for high frequency like a Ku wave band usage.

The invention relates to a multi-beam scanning antenna comprising a first PCB, a second PCB and a third PCB. The three PCBs closely fit one another from bottom to top. A metal grounding plate and a Rotman lens are arranged on a substrate of the first PCB. A micro-strip patch array and a direct-current loading line are arranged on a substrate of the third PCB. One side of the second PCB is provided with through holes in which coaxial connectors are arranged to connect the first PCB and the third PCB. Each of the coaxial connectors includes a metal wire core which is coated with an insulating medium, and both ends of the metal wire core extend out of the insulating medium. The micro-strip patch array is composed of at least two micro-strip patch linear arrays, each micro-strip patch linear array includes at least two micro-strip patch units, and every two micro-strip patch units are connected by a micro-strip line. Compared with the prior art, electric scanning in a two-dimensional space can be realized, and the antenna of the invention is simple in structure and convenient to maintain.

The invention discloses a millimeter wave linearly polarized vehicle-mounted fanned beam antenna, belonging to the technical field of antennas. The antenna comprises a planar sum-difference network, coupled-fed slots, waveguide slots, metal walls, a microstrip slot surface, rigid support foam and a metal sheet, wherein a sum port and a difference port of the planar sum-difference network are ports connected with the outside; the waveguide slots are formed on the back of the planar sum-difference network; the waveguide slots and the planar sum-difference network are connected by the coupled-fed slots; the metal walls are positioned at the two sides of the waveguide slots; the planar sum-difference network, the coupled-fed slots, the waveguide slots and the metal walls integrally serve as an antenna back sheet; the metal sheet is positioned on the reverse side of the antenna back sheet and covers the planar sum-difference network; the microstrip slot surface is bonded with the waveguide slots by conductive adhesives; and the rigid support foam is positioned between the metal walls, is fixed on the metal walls and covers the microstrip slot surface. The antenna has the following beneficial effects: the defects of high processing cost, low yield, small work bandwidth and long processing period of metal waveguide slot arrays and the defect of low gain of microstrip patch array antennas are overcome.

The invention discloses a low-loss frequency scanning antenna plane array based on a hybrid feeding structure in a limited bandwidth. The frequency scanning array is composed of a plurality of parallel subarrays, including a double-layer microstrip patch array, a metal floor, an E-plane bent waveguide, a waveguide slot and a microstrip line electromagnetic coupling feeding structure, a waveguide power splitter and a 180-degree elbow, wherein one end of the E-plane bent waveguide is a feeding port, the other end is a waveguide port connected with a matching load, and the sub-array is fed by anE-plane waveguide power splitter; a metal floor with an elliptical slot is placed on an E-plane waveguide, a microstrip line is arranged at a position corresponding to each slot on a dielectric substrate to form an electromagnetic coupling feeding structure, and two sides of each microstrip line are respectively connected with a microstrip transmission line, and ports of the microstrip transmission line are respectively connected with corresponding microstrip patch units. The invention significantly broadens the bandwidth, reduces the loss of the frequency scanning slow wave line, improves theefficiency and the gain of the array, and improves the performance of the frequency scanning antenna.

The invention provides a planar microstrip patch array antenna. The planar microstrip patch array antenna comprises one row of radiation patch array composed of radiation patches which are arrayed along the straight line, wherein feed networks, which are symmetrical mutually, are arranged on two sides of the radiation patch array; feed notches, which are symmetrical mutually, are formed in two central positions of radiation edges on two sides of each radiation patch; and a central feed point of each feed notch is connected with the feed network located on the same side. By adopting the planar microstrip patch array antenna provided by the invention, the problems of an existing planar microstrip patch array antenna that an antenna radiation pattern is asymmetrical and double ports need to be switched to a single port in a differential connection process of a radio frequency front-end circuit can be solved.

A microstrip patch array antenna suppressing side lobes. The microstrip patch array antenna have a plurality of antenna array elements on two-dimensional planar having A axis and B axis for suppressing side lobes, wherein the antenna array elements are linearly arranged in a direction of the A axis by spacing a first predetermined distance between the antenna array elements, the arranged array elements are arranged in a direction of the B axis by spacing a second predetermined distance between the antenna array elements and a predetermined portion of the microstrip patch array antenna having the arranged array elements are horizontally shifted to a predetermined distance. The present invention can reduce leakage of signal or prevent to receive undesired signal and to transmit signals to undesired direction by using the above mentioned array pattern instead of reducing a distance of spacing between antenna elements.

The invention provides a W-band reconfigurable microstrip filter based on intercalated graphene. The W-band reconfigurable microstrip filter comprises a metal grounding plate, a dielectric substrate,a plurality of microstrip patches and a plurality of intercalated graphene structures, wherein a layer of the metal grounding plate is deposited on the bottom surface of the dielectric substrate, theplurality of patches are arranged on the surface of the dielectric substrate in an array manner to form a microstrip patch array structure, and a circle of the intercalated graphene is arranged aroundthe patch array structure. According to the invention, the change of the conductivity of the intercalated graphene affects the coupling capacitance with the patch unit, and finally changes the resonant frequency and passband number of the filter, so the change of the microstrip filter in a frequency range is more flexible, the problem of irreversible operation of a printed board is solved, and the application field in production practice is expanded. Structurally, the micro-strip coupling filter of an array structure is adopted, and the size of the filter can be further reduced on the premisethat the performance is not changed.

The invention relates to a conformal antenna technology, in particular to a rapid estimation method for the directional diagram of a radian-deformed conformal microstrip patch antenna, which sequentially comprises the steps of modeling a microstrip patch antenna on a dielectric plate, simulating a microstrip patch antenna model, obtaining a radiation electric parameter value, determining an H-surface directional diagram function of the curved surface microstrip patch antenna through curve fitting, and obtaining an H-surface directional diagram and a directional diagram function of a conformal antenna formed by a curved surface microstrip patch array. The invention provides an effective antenna direction rapid estimation method for the patch microstrip antenna influenced by deformation. The method comprises the following steps: simulating antennas with different degrees of deformation to obtain antenna radiation pattern data, and performing curve fitting to obtain an antenna H-surface pattern function formula, so that a deformed conformal microstrip patch antenna array far-field H-surface pattern can be quickly calculated through the formula. When the directional diagram of the deformed microstrip antenna is calculated, the formula provided by the invention can be applied mechanically to achieve rapid calculation.