65 results about "Broadband microstrip antenna" patented technology

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.

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.