Crack waveguide antenna and manufacturing method thereof
A technology for waveguide antennas and manufacturing methods, applied in leaky waveguide antennas, structural forms of radiation units, circuits, etc., can solve problems affecting vehicle-to-ground communication RF systems, endanger rail traffic driving safety, rail traffic interruptions, etc., and meet transmission requirements performance, ensuring normal operation, and ensuring safe operation
Active Publication Date: 2012-10-03
中电科微波通信(上海)股份有限公司
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Problems solved by technology
According to the field use of the cracked waveguide antenna, it is found that there are hidden dangers of rainwater, dust and other erosion at the cracks of the cracked waveguide, the connection between the flange and the waveguide, and the connection between the adjacent cracked waveguide. If effective measures are not taken Measures will inevitably affect the transmission performance of the cracked waveguide antenna, and then affect the entire vehicle-to-ground communication RF system. In severe cases, it will lead to interruption of rail traffic and even endanger the driving safety of rail traffic.
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[0029] The related slot waveguide antenna and its manufacturing method will be described in detail below with reference to the drawings and specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.
[0030] like figure 1 Shown is a schematic structural view of the slotted waveguide antenna 10 . It includes two slotted waveguides 11 for transmitting signals, a sealing flange 13 arranged between the two slotted waveguides 11 and a flange cover 12 covering the sealing flanges 13 . The transmission signal input from the coaxial conversion (not shown in the figure) connected to the M terminal in the figure reaches the output terminal N through two cracked waveguides 11, and the redundant signal is transmitted by the load (not shown in the figure) connected to the N terminal. ) Absorption, so as to realize the transmission function of the signal.
[0031] like figure 2 Shown is a schematic structural view of the slott...
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The invention provides a crack wave guide antenna which has functions of water resistance, dust prevention, abrasion resistance, trampling prevention and can be conveniently used for ensuring normal running of various communication systems. The crack waveguide antenna is provided with at least one crack waveguide pipe, the crack waveguide pipe is used for transmitting a signal and comprises a pipeline and flanges, the flanges are formed at two ends of the pipeline, a plurality of cracks are arranged on the surface of the pipeline and are used for leading the signal to transmit from inside of the crack waveguide pipe to outside space, the crack waveguide antenna is characterized by also comprising a first protection layer, a second protection layer and a third protection layer, the first protection layer, the second protection layer and the third protection layer can be used for wave transmission, the first protection layer covers the plurality of cracks, the second protection layer is covered on the first protection layer, and the third protection layer is covered on the second protection layer.
Description
technical field [0001] The invention relates to a slotted waveguide antenna, in particular to a slotted waveguide antenna with protection function. Background technique [0002] With the development of computer technology, communication technology and automatic control technology, in the field of rail transit communication technology, a mobile block train control (CBTC) system based on wireless communication has been developed to realize vehicle-ground data transmission and train positioning has been widely used. The slotted waveguide antenna adopts the slotted waveguide as the two-way transmission medium of the train and the ground, that is, the slotted waveguide laid along the line and the wireless access point connected with the waveguide are used as the two-way transmission channel between the trackside and the train. The cracked waveguide in this system has a large communication capacity, can be transmitted in tunnels and curved channels, has strong anti-interference ab...
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IPC IPC(8): H01Q13/22H01Q1/40
Inventor 徐朝勇安彤印小忠徐凡陈俊华
Owner 中电科微波通信(上海)股份有限公司