Abstract: A radiation therapy system may include a magnetic resonance imaging (MRI) device configured to acquire MRI data with respect to a region of interest (ROI). The MRI device may include a main magnet that is around a longitudinal axis and configured to generate a magnetic field. The MRI device may also include a radiation therapy device configured to perform a treatment on at least one portion of the ROI by delivering, based on the MRI data, therapeutic radiation to the at least one portion of the ROI. The radiation therapy device may be rotatable around the longitudinal axis. The MRI device may also include a first shielding structure configured to provide interference shielding for the MRI device or the radiation therapy device. The radiation therapy device may be rotatable relative to the first shielding structure around the longitudinal axis.

Abstract: A transmission device for a base station antenna includes a motor, a screw driven by the motor, a transmission shaft, and a linkage system. The linkage system is connected with the screw via the transmission shaft, so that the screw drives the linkage system via the transmission shaft. The linkage system includes: a worm driven by the transmission shaft, a worm gear meshed with the worm, at least one spur gear disposed on a same connecting shaft as the worm gear, and at least one connecting rod engagement element. The spur gear and the worm gear are fixed relative to each other. The connecting rod engagement element has a rack meshed with the spur gear, so that the worm drives the worm gear to rotate with the spur gear, and the spur gear drives the connecting rod engagement element via the rack to move in an axial direction of the transmission shaft.

Abstract: The present disclosure relates to a phase shifter assembly comprising a phase shift circuit and a dielectric assembly having at least one dielectric element movable relative to the phase shift circuit for phase shifting, wherein the at least one dielectric element is disposed at a set distance from the phase shift circuit to form a gap between the at least one dielectric element and the phase shift circuit. In addition, the present disclosure also relates to a cavity phase shifter and a base station antenna.

Abstract: Printed circuit boards for a base station antenna include a substrate layer, and a first conductive trace and a second conductive trace which are printed on the substrate layer and cross each other. The first conductive trace has two trace sections separated by the second conductive trace. Adjacent ends of the two trace sections separated by the second conductive trace are connected electrically by a jumper. The jumper has an electrical conductor, is isolated electrically from the second conductive trace and is fixed on the printed circuit board. The electrical conductor and the two trace sections are connected electrically at adjacent ends. The printed circuit board allows flexible wiring of the conductive traces on the printed circuit board.

Abstract: The present invention relates to an antenna assembly. The antenna assembly comprises a feed board, a backplane, and a calibration board. A plurality of radiating elements are mounted on the feed board and extend forwardly from the feed board. The feed board is mounted on a first major surface of the backplane, and the calibration board is mounted on a second major surface of the backplane opposite the first major surface. The antenna assembly further includes a conductive structure, which extends through openings in at least two of the feed board, the backplane and the calibration board so as to electrically connect a first transmission line on the calibration board with a second transmission line on the feed board. The antenna assembly according to embodiments of the present invention can also achieve high integration and miniaturization of the overall antenna construction. Further, the present invention relates to a base station antenna comprises an antenna assembly.

Abstract: The present disclosure relates to a mechanical transmission mechanism and a base station antenna.

Abstract: A multi-antenna mounting device includes: a mounting member to which two or more antennas are fixable; and a tilt angle adjusting mechanism including an upper adjusting component and a lower adjusting component spaced apart along a length direction of the mounting member. The upper adjusting component includes a plurality of tilt angle adjusting holes arranged in a row, one end of the upper adjusting component is connectable to the mounting member, and the other end is connectable to a user's support pole with a fastening element extending through one of the tilt angle adjusting holes. When the fastening element extends through different tilt angle adjusting holes, the multi-antenna assembly has different mechanical tilt angles relative to the support pole. The lower adjusting component includes a first section and a second section. The second section has a predetermined length and the first section is pivotable relative to the second section.

Abstract: An integrated antenna element includes a top PCB and a bottom PCB arranged in a laminate structure. Radiating surface units are arranged between the top PCB and the bottom PCB. A first balun and a second balun set separately set on the top and bottom PCBs respectively, each for different polarization. The integrated antenna element is capable of transmitting signals to a base station and receiving signals from a base station.

Abstract: The present disclosure relates to a mechanical transmission mechanism and a base station antenna.

Abstract: Printed circuit boards for a base station antenna include a substrate layer, and a first conductive trace and a second conductive trace which are printed on the substrate layer and cross each other. The first conductive trace has two trace sections separated by the second conductive trace. Adjacent ends of the two trace sections separated by the second conductive trace are connected electrically by a jumper. The jumper has an electrical conductor, is isolated electrically from the second conductive trace and is fixed on the printed circuit board. The electrical conductor and the two trace sections are connected electrically at adjacent ends. The printed circuit board allows flexible wiring of the conductive traces on the printed circuit board.

Abstract: A multi-antenna mounting device includes: a mounting member to which two or more antennas are fixable; and a tilt angle adjusting mechanism including an upper adjusting component and a lower adjusting component spaced apart along a length direction of the mounting member. The upper adjusting component includes a plurality of tilt angle adjusting holes arranged in a row, one end of the upper adjusting component is connectable to the mounting member, and the other end is connectable to a user's support pole with a fastening element extending through one of the tilt angle adjusting holes. When the fastening element extends through different tilt angle adjusting holes, the multi-antenna assembly has different mechanical tilt angles relative to the support pole. The lower adjusting component includes a first section and a second section. The second section has a predetermined length and the first section is pivotable relative to the second section.

Abstract: An integrated antenna element includes a compact printed board and at least two dual-polarized radiating elements. The compact printed board includes a top PCB and a bottom PCB in a laminate structure. Each radiating element includes a radiating surface unit and a layered-balun. The radiating surface unit is placed between the top PCB and the bottom PCB. The layered-balun includes a first balun and a second balun set separately set on the different PCBs each for different polarization. An antenna unit and a multi-array antenna are accordingly obtained.