4results about How to "Improve omnidirectionality" patented technology

The application discloses an electronic device, and relates to the technical field of electronic products. The electronic device comprises a screen module, a frame, a back cover and an antenna assembly, the screen module, the frame and the back cover are sequentially stacked, the screen module and the frame are provided with a first radiation gap, and the frame and the back cover are provided with a second radiation gap; the antenna assembly comprises a first antenna unit, a second antenna unit, a third antenna unit and a fourth antenna unit, the first antenna unit and the second antenna unit are located at a first corner of the electronic device, the third antenna unit and the fourth antenna unit are located at a second corner of the electronic device, and the first antenna unit and the third antenna unit are located between the screen module and the frame, and the second antenna unit and the fourth antenna unit are located between the frame and the back cover; a radiation part of the first antenna unit and a radiation part of the third antenna unit face the first radiation gap, and a radiation part of the second antenna unit and a radiation part of the fourth antenna unit face the second radiation gap.

This disclosure relates to an antenna and an electronic device. The antenna includes: a mid-frame housing, including a bottom wall and a side wall connected to the bottom wall, the bottom wall having a radiating slot; a conductive frame, the conductive frame and the bottom wall enclosing a cavity with an opening, and electrically connected to the side wall; the radiating slot is located outside the cavity and adjacent to the opening. By forming a cavity antenna through the conductive frame and the mid-frame housing, and by forming a frame slot antenna through the radiating slot on the bottom wall of the mid-frame housing, an antenna combination with two excitation methods is formed. The antenna can radiate signals not only from one side of the conductive frame but also from one side of the bottom wall of the mid-frame housing through the radiating slot. This significantly improves the omnidirectionality of the cavity antenna, solves the problem of weak signals in local directions, improves signal strength during user use, and enhances the user experience.

The utility model discloses a vehicle gear part surface anticorrosion treatment device, which comprises a bottom plate and a treatment tank body fixedly arranged on the top of the bottom plate, the bottom of the treatment tank body is fixedly arranged on the bottom plate through four groups of support frames, and the top of the treatment tank body is provided with a top cover in a butt joint manner through fixing bolts. A spraying mechanism is fixedly installed on the inner wall of the treatment tank body, a positioning plate is welded and installed at the position, located at the bottom of the top cover, in the treatment tank body, and a transmission lead screw is installed between the bottom of the positioning plate and the bottom of the treatment tank body; and a main shaft motor used for driving the transmission lead screw to rotate is fixedly installed at the position, located at the bottom of the treatment tank body, of the bottom of the transmission lead screw, a rotating bearing mechanism is rotationally installed on the transmission lead screw, and a gear piece is placed on the rotating bearing mechanism in a limiting mode. The spraying effect is achieved according to different positions and different spraying ranges of the spraying nozzle in the rotating and transmission process of the tooth surface of the gear piece.

The utility model discloses an integrated omnidirectional antenna and digital key product thereof, integrated omnidirectional antenna includes circuit board, first antenna module and second antenna module. First antenna module and second antenna module become a whole system, under the premise of isolation degree satisfaction, first parasitic branch as a part of environment, under the premise of satisfying the non -circularity of first antenna module, make the field shape of second antenna module also can obtain the promotion. Second antenna module can adopt dipole form, namely in left and right direction symmetry or relative symmetry setting. First parasitic branch as the parasitic branch of first main radiation branch, for increasing the circularity of antenna field shape. Can change the resonant frequency and parasitic current of parasitic branch through adjusting the length, position (swing radian) of first parasitic branch and the distance between main radiation branch etc. mode, and then make up the antenna field type defect of first antenna module and second antenna module, finally produce the radiation field type of non -circularity less (less than 5dB) respectively in horizontal plane, realize omnidirectional performance promotion.