UAV onboard emergency communication three-band antenna device
An antenna device and emergency communication technology, which is applied in the direction of antenna grounding device, separately powered antenna array, antenna, etc., to achieve the effect of compact structure design, optimized front-to-back ratio and gain, and easy integration and use
Pending Publication Date: 2019-12-20
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
[0004] In view of the above problems, the object of the present invention is to provide a three-band antenna device for unmanned aerial vehicle emergency communication, aiming to solve the problem of ensuring small size, light weight, compact structure and satisfying the compatible design of three-band antennas
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[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0019] In order to illustrate the technical solution of the present invention, specific embodiments are used for description below.
[0020] figure 1 , 2 The structure of the three-band antenna device for emergency communication on a drone provided by the embodiment of the present invention is shown. For ease of description, only the parts related to the embodiment of the present invention are shown.
[0021] The three-band antenna device for drone-borne emergency communication provided by this embodiment includes a cavity reflecting surface 1. A plurality of 1.4G antenna units 2 are uniformly ar...
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The invention belongs to the technical field of antennas and provides an UAV onboard emergency communication three-band antenna device, which includes a cavity reflection surface, wherein a pluralityof 1.4G antenna units are evenly arranged along the circumferential direction around the central axis of the cavity reflection surface. The device further includes an integrated antenna unit. The integrated antenna unit includes a 2.4G antenna and an 800M antenna. A coaxial cable feeder line is disposed at the bottom of the 800M antenna. The bottom of the cavity reflection surface is further provided with an antenna control box. Only one 1.4G antenna unit communicates with the antenna control box at any time so as to achieve low cost and stable operation. In addition, the 2.4G antenna and the800M antenna are integrated such that the entire antenna device can operates at three frequency points without interfering with each other. The three-band antenna device is compact in structure and low in weight, has three compatible frequency points, is easy to integrate and use, and is particularly suitable for onboard emergency communication.
Description
Technical field [0001] The invention belongs to the field of antennas, and in particular relates to a three-band antenna device for emergency communication on a drone. Background technique [0002] In the UAV emergency communication application, the communication load usually requires the mobile communication terminal antenna to have multi-band, high gain, large bandwidth and other performance characteristics to meet the communication requirements, and with the development of mobile terminals tends to be miniaturized, so the antenna size Put forward higher requirements. [0003] For the three-band antenna, the working frequency range is 1350MHz~1500MHz (1.4G antenna for short), 2300MHz~2500MHz (2.4G antenna for short), 750MHz~850MHz (800M antenna for short), among which the 1350MHz~1500MHz frequency band is horizontal narrow beam Switching antennas, 2300MHz~2500MHz are high gain antennas to the ground, and 750MHz~850MHz are horizontal omnidirectional antennas. There are many ante...
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Login to View More IPC IPC(8): H01Q21/30H01Q21/29H01Q21/20H01Q19/10H01Q3/24H01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q1/28
CPCH01Q21/30H01Q21/293H01Q21/20H01Q19/10H01Q19/106H01Q19/104H01Q3/247H01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q1/285
Inventor 廖非凡周彦王振义邹力郎为民魏声云邹顺颜伟李祯陈金明
Owner NAT UNIV OF DEFENSE TECH