6results about How to "Change current distribution" patented technology

This utility model discloses a dual-polarized broadband base station antenna radiating unit, belonging to the field of broadband antenna technology. The dual-polarized broadband base station antenna radiating unit includes a metal reflector, a feed support, a radiator, and a feed conductor. The radiator includes four vibrating arms, each with a slot on its top surface and a trapezoidal slot on an adjacent side. The feed support has multiple mounting holes on its top surface, and the feed conductor is located inside these holes. A dielectric gasket is fixed to the outside of the feed conductor. This utility model is an integrated radiating unit, featuring high installation stability and good consistency in mass production. Its excellent cross-cutting ratio and port isolation characteristics, along with its 1700-2700MHz broadband characteristics, effectively address the current demand for broadband base station antennas, solving the problem that the relative bandwidth is still insufficient to meet the needs of existing ultra-wideband antennas.

The invention discloses a broadband filtering dual circular polarization array antenna, which belongs to the field of antenna technology. The antenna includes a feeding structure, a dielectric substrate and a floor from top to bottom; the feeding structure includes a circular serial feeding strip, a swastika-shaped branch and four umbrella-shaped excitation strips; the floor includes four circular holes, and the end of each umbrella-shaped excitation strip is 4mm-6mm away from the edge of the circular hole. The feeding structure cooperates with the circular hole to generate stronger circular polarization excitation, synthesizes a circular polarization wave with higher circular polarization purity as a whole, and realizes circular polarization radiation with higher gain and more stability; at the same time, the swastika-shaped branch and the slender slit constitute a low-frequency filtering structure, which cooperates with the umbrella-shaped excitation strip to generate radiation zero points at low frequencies and high frequencies, thereby improving the out-of-band suppression level of the antenna.

The invention, which belongs to the technical field of the antenna, discloses a broadband filtering dual-circularly-polarized array antenna comprising a feed structure, a dielectric substrate and a floor from top to bottom. The feed structure comprises a circular series-sequence feed strip, a swastika-shaped branch knot and four umbrella-handle-shaped excitation strips; the floor comprises four circular hole grooves, and the distance between the tail end of each umbrella-handle-shaped excitation strip and the edge of each circular hole groove is 4-6 mm. The feed structure is matched with the circular hole groove, so that stronger circular polarization excitation can be generated, circular polarization waves with higher circular polarization purity are synthesized on the whole, and circular polarization radiation with higher gain and more stability is realized; meanwhile, the swastika-shaped branch knot and the slender slit groove form a low-frequency filtering structure, and the low-frequency filtering structure is matched with the umbrella-handle-shaped excitation strip, so that radiation zero points can be generated at a low-frequency position and a high-frequency position, and the out-of-band rejection level of the antenna is improved.

The present invention discloses a multi-standard mobile communication signal direction-finding antenna, including a low-frequency antenna array and a high-frequency antenna array; the low-frequency antenna array includes a plurality of low-frequency circularly polarized antennas arranged in an L-shape on the same horizontal plane, the low-frequency circularly polarized antenna includes an upper microstrip antenna, a middle microstrip antenna, a bottom microstrip antenna, a feed network layer and a ground plane, and the high-frequency antenna array includes a plurality of high-frequency circularly polarized antennas arranged in an L-shape on the same horizontal plane; the high-frequency circularly polarized antenna includes a first Vivaldi antenna array and a second Vivaldi antenna array that are orthogonal to each other. The present invention has a simple structure and a reasonable design, and designs low-frequency circularly polarized antennas for use in 0.8GHz to 0.96GHz and high-frequency circularly polarized antennas for use in 1.7GHz to 2.7GHz, respectively. The use of these two circularly polarized antennas can achieve the effect of full-band coverage; using low-frequency circularly polarized antennas and high-frequency circularly polarized antennas as array elements, two groups of L-shaped direction-finding arrays are designed respectively, so as to solve the problem of large size and narrow bandwidth of the direction-finding array.

The present invention discloses a beam reconfigurable antenna and electronic equipment, comprising a dielectric substrate, a coplanar waveguide, at least two metal units and four radio frequency switches, wherein the dielectric substrate comprises a first surface and a second surface opposite to each other, the coplanar waveguide comprises a first ground wire, a second ground wire and a signal wire arranged between the first ground wire and the second ground wire; the coplanar waveguide and the four radio frequency switches are arranged on the first surface, and at least two metal units are arranged on the second surface and are periodically distributed; the first radio frequency switch and the second radio frequency switch are close to the input end of the coplanar waveguide, and the third radio frequency switch and the fourth radio frequency switch are close to the output end of the coplanar waveguide; the signal wire is connected to the first ground wire through the first radio frequency switch and the third radio frequency switch respectively, and the signal wire is connected to the second ground wire through the second radio frequency switch and the fourth radio frequency switch respectively. The present invention can realize the switching between single beam and multi-beam without additional compensation technology.

The utility model belongs to the technical field of communication equipment, and particularly relates to an ultra wide band car platform antenna, which comprises a fixed seat, the fixed seat is fixedly connected with an antenna cover, an antenna structure is arranged in the antenna cover, the antenna structure comprises an impedance disc cone, a guide disc cone is arranged below the impedance disc cone, and the guide disc cone is arranged below the impedance disc cone. A zigzag cone body and a zigzag cone are arranged below the guide disc cone, the zigzag cone is fixedly connected to the inner wall of the fixed seat, and the short circuit column is arranged on the inner wall of the fixed seat. According to the ultra-wide-band car frame antenna, the antenna structure is composed of the guiding disc cone, the impedance disc cone, the zigzag cone and the short circuit columns, the inductance and capacitance distribution of the antenna is changed through the arrangement of the short circuit columns, the minimum value of the resonant frequency can be obtained by adjusting the positions of the short circuit columns, and therefore the purpose that the antenna is broadened to the low frequency is achieved; meanwhile, the design of the zigzag cone can effectively expand the impedance bandwidth, and further improves the performance of the antenna.