Array plasma antenna with omni-directional scanning function
A technology of plasma antennas and arrays, which is applied in the directions of antennas, antenna arrays, antenna grounding devices, etc., can solve the problems of complex feeding phase control of antenna arrays, and achieve good pattern controllability, high directivity coefficient, and controllability wide effect
Inactive Publication Date: 2013-10-30
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
However, this invention is still based on the principle of phased array, that is, the feed signals of each antenna unit must have a certain phase difference, so the feed phase control of the antenna array is relatively complicated
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Embodiment Construction
[0022] The present invention will be described in further detail below with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0023] like figure 1 As shown, the omnidirectional scanning plasma antenna array includes a plurality of plasma antenna units 1, and the plurality of plasma antenna units 1 are arranged and distributed at equal intervals on the same ring, and the distance between two adjacent plasma antenna units 1 is Fixed, between λ / 8-λ / 4, where λ=c / f, the speed of light c=3×10 8 m / s, f is the operating frequency of the plasma antenna array; the number N of plasma antenna units is 4-8. If the number of antenna elements increases, increasing the radius of the ring can keep the straight-line distance between adjacent antenna elements fixed.
[0024] like figure 2 As shown, the plasma antenna unit 1 includes a dielectric tube 2, an inert gas 3, an excitation feeding ring 4, a signal feeding ring 7 and a gr...
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The invention relates to a plasma antenna array which is constituted by leading a plurality of plasma antenna units to work simultaneously, and the pointing direction of a radiation pattern of the plasma antenna array can carry out omni-directional scanning on the plane on which the plasma antenna units are distributed. Signal feed loops on all the plasma antenna units can feed communication signals with same phase and amplitude onto plasma antennas. The higher exciting power is imposed on the plasma antenna unit in the direction which needs to produce stronger radiation so as to produce plasma with higher density and higher electrical conductivity. A radiation signal of the plasma antenna unit with the higher electrical conductivity is stronger than other antenna units, and then the plasma antenna array can produce the stronger radiation in the desired direction, thereby carrying out the omni-directional scanning on the pattern of the antenna array. The plasma antenna array is characterized in that the plurality of the plasma antennas are arranged into the array and work simultaneously, and the antenna array not only has high gain and directivity, but also has better pattern reconfigurability.
Description
technical field [0001] The invention relates to a plasma antenna array, in particular to an omnidirectional scanning surface wave driven plasma antenna array, which can realize the functions of stealth and reconfigurability of the directional diagram of the antenna. Background technique [0002] The rapid development of modern mobile communication systems puts forward higher requirements for communication system antennas. Communication antennas are developing towards frequency reconfigurable and pattern reconfigurable. Compared with traditional metal antennas, plasma antennas use plasma instead of ordinary metals to conduct and radiate electromagnetic waves, so they have unique advantages: First, by controlling plasma parameters, the radiation pattern, efficiency and operating bandwidth of the antenna can be improved. Realize dynamic reconstruction; second, the plasma antenna is an ordinary medium when it is not excited, and the radar cross section is extremely small. Thir...
Claims
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IPC IPC(8): H01Q1/26H01Q1/48H01Q21/00
Inventor 胡斌杰李学识周双
Owner SOUTH CHINA UNIV OF TECH