Aac Technologies Pte. Ltd.

Shenzhen Mindray Bio-medical Electronics Co., Ltd.

Shenzhen Cimc-tianda Airport Support Ltd.

Li Han

Yuehua Yue

Hua Jiang

Qingchen Chu

Wei Yan

Sheng Wang

Hua Li

Jianchuan Liu

Yuanda Zhou

Xufeng Zhang

Jianpeng Zhu

Chi Xie

Honglei Li

Mike Xiang

James Xue

Kun Bao

Jack Zhang

An antenna system includes: a radiating sheet provided with an elastic first fixing portion; an insulating bracket including a bracket body, and mounting portions, a second fixing portion and a first assembling portion; coupling circuit sheets, each of which is provided with a coupling circuit at a single side thereof and fixed in a slide rail of the mounting portion in such a manner that a feeding pin at a bottom of the coupling circuit sheet extends out of the one mounting portion; and a feeding network circuit board. In the antenna system and an assembly method thereof, and a base station array antenna, there is various one-time fixing structures, which makes the assembly to be simple and efficient, and there are few feeding welding points, which is suitable for automatic production.

Antenna system and assembly method thereof, and base-station array antenna

An antenna calibration network system, an antenna calibration network and a MIMO antenna are provided, and the antenna calibration network system includes a substrate, directional coupler groups provided on the substrate and arranged in a horizontal direction, and a multi-stage combiner network provided at front ends of the directional coupler groups. A parallel coupled line of each directional coupler extends along a horizontal direction. The multi-stage combiner network includes first-stage combiners arranged at one side of the directional coupler groups, and second-stage combiners cascaded with the first-stage combiner and passing between the two directional coupler groups corresponding to the two first-stage combiners to the other side of the plurality of the directional coupler groups. A space utilization rate of the calibration network board can be improved, a size of the calibration network board can be reduced, and antenna cost can be reduced.

Antenna calibration network system, antenna calibration network and MIMO antenna

The embodiments of the present invention relate to the field of communication technology, and disclose an antenna system and a mobile terminal. In the present disclosure, the antenna system includes: a first antenna, a second antenna, a third antenna, a fourth antenna, and a fifth antenna, wherein the first antenna, the second antenna, the fourth antenna, and the fifth antenna constitute a 4*4 MIMO operating at 3300 MHz to 3600 MHz, the second antenna and the third antenna constitute a 2*2 MIMO operating at 4800 MHz&#x2dc;5000 MHz, so that the antenna system of the present disclosure can support the operating band of the terminal in 5G communication, promoting the development of mobile terminal in the aspect of 5G communication.

Antenna system and a mobile terminal

A mobile terminal, including a display screen, a rear cover facing the display screen, a metal frame, and a circuit board; the metal frame and the circuit board are between the display screen and the rear cover and extend along outer profile of the rear cover. The antenna system includes at least one antenna unit. Each antenna unit includes a first gap in the metal frame and a second gap communicated with the first gap; the first gap extends along perimeter of the metal frame to form a strip-like hollow; the second gap extends from the middle of the first gap toward the rear cover until through the metal frame so as to divide the metal frame into a first section and a second section; the first section and the second section are electrically connected with the feeding point to form a first radiator and a second radiator, respectively.

Antenna system and mobile terminal

An electronic flow monitor, a control method and an anesthesia machine. The electronic flow controller can comprise a control module, an oxygen gas branch for delivering oxygen gas, an equilibrium gas branch for delivering equilibrium gas, and a gas mixing branch for mixing the oxygen gas and the equilibrium gas. The control module can meter an oxygen gas flow and an equilibrium gas flow through flow sensors. A first flow controller can be disposed in the oxygen gas branch, and a second flow controller can be disposed in the equilibrium gas branch. The first flow controller may be used to regulate the gas flow in the oxygen gas branch between zero and a maximum value and the second flow controller may be used to regulate the gas flow in the equilibrium gas branch between zero and a maximum value.

Electronic flow monitor, control method and anesthesia machine

A mobile terminal is disclosed. The mobile terminal includes a housing with an accommodation space, the housing including a metal rear cover serving as a radiator, the metal rear cover including a first metal part, a second metal part and a third metal part insulated to each other; a mainboard received in the accommodation space, the mainboard including a grounding part and a feed part; an antenna module including a grounding dynamic switch unit and a feed dynamic switch unit; wherein the grounding dynamic switch unit is connected between the grounding part and the first metal part, one end of the feed dynamic switch unit connects with the feed part, and the other end connects with the first metal part or the second metal part selectively.

Mobile terminal

A transmission wheel for a platform transmission apparatus includes a wheel frame having a disk with a central hole for fixing to a drive axle, and a plurality of ball rollers carried on each side of the disk by supports which extend axially. The ball rollers on each side of the disk each have a circular arc camber which lies on a common circle concentric to the axis, the rollers on each side being evenly spaced apart and staggered from the rollers on the other side. The supports include concave portions which correspond to the circular arc camber and also enhance the rigidity of the wheel frame.

Growing community of inventors

Shenzhen, China

Li Han