6 results about "Dielectric plate" patented technology

The present invention provides a dual-band circular polarization selector and a preparation method thereof. The dual-band circular polarization selector comprises a dielectric substrate, a dielectricplate arranged on the dielectric substrate, a metal split resonant ring arranged on the surface of the dielectric plate, and a metal antenna arranged on the dielectric substrate, wherein an included angle is between the planes where the dielectric substrate and the dielectric plate are located. The dual-band circular polarization selector is a dual-band and miniaturized circular polarizer, the degree of integration is high, and the range of operating frequency is wide.

Band-pass filter having a body comprising a rectangular waveguide and a dielectric insert comprising a dielectric plate and a high temperature superconductive film in line with a number of rectangular windows of the same height. The waveguide has a×b cross-section, a being length of the wide wall and b the length of the narrow wall. Each wide wall has a fixing groove at the central portion and a rectangular recess in the fixing groove. The dielectric plate has two ends in the fixing grooves and is symmetric with a perpendicular bisecting plane of the wide wall. The rectangular recess is symmetric to the perpendicular bisecting plane and has same length as the waveguide, with its width w satisfies t<w<a/2, and depth d satisfies d<λ/4, t being total thickness of the dielectric plate and the high temperature superconductive film, and λ the wavelength of the central frequency of the pass-band of the band-pass filter.

The invention discloses a differential feed circular polarization metasurface antenna with a wide axial ratio bandwidth. The antenna comprises a first dielectric plate S1, a second dielectric plate S2, a metal grounding plate N, an antenna radiation structure M and a feed network F, the antenna radiation structure M comprises a first non-uniform metasurface structure unit, a second non-uniform metasurface structure unit and a third non-uniform metasurface structure unit; and a signal is input into the differential feed structure from a 50-ohm microstrip line connected with the microstrip line T1 at the bottom, and is transmitted to the antenna radiation structure M on the upper surface of the first dielectric plate S1 through a pair of coupling slots C1 and C2 on the metal grounding plate N. Received signals are converted into a pair of equiamplitude orthogonal polarized waves by the chamfers of the non-uniform metasurface structure units in the antenna radiation structure M, and finally energy is radiated out through the non-uniform metasurface structure units, so that the circularly polarized antenna is formed.

The invention discloses a circularly polarized antenna, and the antenna comprises a dielectric plate, a first radiation patch, a second radiation patch, a coplanar waveguide feeder line and a metal floor; the first radiation patch, the second radiation patch, the coplanar waveguide feeder line and the metal floor are jointly printed on the dielectric plate; the first radiation patch and the second radiation patch are connected with the metal floor, and the first radiation patch and the second radiation patch are used for being coupled with the coplanar waveguide feeder line and the metal floor to generate circularly polarized radiation waves. The circularly polarized antenna can generate circularly polarized radiation waves, is not influenced by the Faraday rotation effect, improves the communication quality, is suitable for dielectric plates made of various materials, and has the advantages of low profile and miniaturization since the first radiation patch, the second radiation patch, the coplanar waveguide feeder line and the metal floor are arranged on the dielectric plates in a printing manner. The invention also discloses a wireless communication device which has the same beneficial effects as the circularly polarized antenna.

The invention belongs to a sum-difference network, and provides a dual-circular-polarization sum-difference network in order to solve the technical problem that in an existing sum-difference network structure, modules are connected through cables, and the debugging difficulty is increased. Comprising a first dielectric plate, a first bonding plate, a second dielectric plate, a second bonding plate, a third dielectric plate, a third bonding plate and a fourth dielectric plate which are sequentially stacked, metal grounding structures are printed on the two sides of the first dielectric plate, the side, close to the second bonding plate, of the second dielectric plate, the side, close to the second bonding plate, of the third dielectric plate and the two sides of the fourth dielectric plate, and a levorotation sum-difference network structure is printed on the surface, close to the first bonding plate, of the second dielectric plate. A right-handed rotation sum-difference network structure is printed on the surface, close to the third bonding plate, of the third dielectric plate, feed holes are formed in the left-handed rotation sum-difference network structure on the second dielectric plate, and feed through holes which are communicated with one another are formed in the positions, corresponding to the feed holes, of the second bonding plate, the third dielectric plate, the third bonding plate and the fourth dielectric plate.