57results about How to "Achieve widening" patented technology

A flexible dual-band planar microstrip antenna comprises a first U-shaped resonator (1), a second U-shaped resonator (2), a first rectangular branch (3), a second rectangular branch (6), a first rectangular ground (4), a second rectangular ground (7), a feeder (5) of the flexible microstrip antenna and a polyimide medium plate (8). A flexible polyimide material serves as the medium plate, so that the antenna has good folding and bending characteristics. Two U-shaped quarter-wave resonators of different sizes are used for coupling, so that ultra-wind band coverage of a first band from 1 GHz to 2.5GHz is achieved on the condition that the dual-band characteristic of the antenna is kept. The two rectangular branches are symmetrically distributed on the two sides of a U-shaped irradiator, and are used for achieving coverage of a second communication band of 5.5GHz. A coplanar waveguide feed method is adopted, so that the whole antenna is totally integrated on one side of the medium plate and is easy to adhere, and severe influences on performance of the antenna are not generated. The flexible dual-band planar microstrip antenna is suitable for various electronic products with microstrip antennas.

A method and an apparatus for fabricating a pattern which makes it possible to obtain a wide pattern having edges of a preferable shape. The apparatus for fabricating a pattern ejects a liquid material as liquid droplets from an ejecting section, and dispose the liquid droplets on a substrate in a line-shaped pattern. A plurality of line-shaped patterns are formed on the substrate by disposing a plurality of liquid droplets on the substrate in the line-shaped patterns, and then another set of liquid droplets are disposed between the line-shaped patterns so as to integrate the line-shaped patterns with each other.

The present invention proposes a system and method for suppressing the stimulated Brillouin scattering effect in a high-power, narrow-linewidth fiber laser amplifier, and performs single-frequency laser output from a single-frequency laser in a high-power, narrow-linewidth fiber laser The phase modulation signal used for phase modulation is φ f (t), where φ f (t)=rem(φ(t) / 2π), to realize the broadening of the single-frequency laser spectrum, so as to achieve the purpose of suppressing the stimulated Brillouin scattering effect. Compared with the existing white noise signal modulation and pseudo-random phase code modulation, the present invention can achieve more efficient stimulated Brillouin scattering suppression, and provide a theoretical basis and basis for further power improvement of high-power, narrow-linewidth fiber laser systems. Technical Support.

The invention discloses a medium-small span old bridge reinforcement and jointing-widening structure. The medium-small span old bridge reinforcement and jointing-widening structure comprises a reinforcement structure located below an old bridge and a jointing-widening structure located at at least one side of the old bridge. The reinforcement structure comprises a pair of reinforcement pile foundations arranged at the two sides of the old bridge span. Steel plates are erected between the pair of reinforcement pile foundations along the bridge bottom face to form a reinforcement bridge floor in a jointed mode. A hollow cavity is formed between the reinforcement bridge floor and the bottom face of the old bridge and filled with concrete. The jointing-widening structure comprises a pair of jointing-widening pile foundations arranged at the two ends of the old bridge span and at least one sides of the reinforcement pile foundations correspondingly. Steel plates are erected between the pair of jointing-widening pile foundations to form a jointing-widening bridge floor in a jointed mode, and the jointing-widening bridge floor is adjacent to the reinforcement bridge floor and identical to the reinforcement bridge floor in radian. A reinforcement plate is arranged on the jointing-widening bridge floor. A hollow cavity is formed between the reinforcement plate and the jointing-widening bridge floor and filled with concrete. Backfill is arranged on the jointing-widening bridge floor and reinforcement plate to be flush with the old bridge floor. According to the medium-small span old bridge reinforcement and jointing-widening structure, the existing bridge is reinforced and widened through the reinforcement structure and the jointing-widening structure, and the problem caused by dismantling and rebuilding of the old bride is avoided.