Highly-isolated three-array element micro-strip planar antenna array
A planar antenna, highly isolated technology, applied in the directions of antenna arrays, antenna arrays, and antennas that are energized separately, it can solve the problems of lack of systematicness and contingency, and achieve the effect of simple and compact structure, improved isolation, and easy implementation.
Inactive Publication Date: 2018-08-14
CHONGQING UNIV
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Problems solved by technology
In order to improve the isolation between the elements of the antenna array, there are common methods such as loading resonators or defective ground structures between the elements, but such methods are more accidental and lack systematic
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[0029] figure 1 Shown is a schematic diagram of the structure of a three-element microstrip planar antenna linear array. The dielectric substrate of the antenna array is FR4 material with a relative permittivity of 4.4 and a thickness of t=1.6mm. Its loss tangent is 0.02, and its dimensions are W=132mm and L=60mm. The size parameters of the three antenna array elements are w=24mm, l=29.2mm, the distance between the array elements is d=12mm, and the working frequency band of the antenna array is 2.4GHz. figure 2 Shown is a schematic diagram of the structure of the microstrip decoupling network.
[0030] According to the symmetry of the array, the decoupling network used to eliminate the coupling between adjacent array elements 1, 2 and adjacent array elements 2, 3 is the same. Considering elements 1 and 2, the microstrip line is loaded into the two-element antenna array as a decoupling network. Due to the symmetry, the impedance matrix of the antenna array is
[0031]
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The invention relates to a highly-isolated three-array element micro-strip planar antenna array, which comprises an upper-layer dielectric substrate, a lower-layer dielectric substrate, a ground plane, a micro-strip planar antenna array element radiation patch I, a micro-strip planar antenna array element radiation patch II, a micro-strip planar antenna array element radiation patch III and a micro-strip decoupling network structure, wherein the micro-strip planar antenna array element radiation patch I, the micro-strip planar antenna array element radiation patch II and the micro-strip planarantenna array element radiation patch III are all printed on the upper surface of the upper-layer dielectric substrate; the ground plane is printed between the upper-layer dielectric substrate and the lower-layer dielectric substrate; and the micro-strip decoupling network structure is printed on the lower surface of the lower-layer dielectric substrate. The micro-strip planar antenna array element radiation patch I, the micro-strip planar antenna array element radiation patch II and the micro-strip planar antenna array element radiation patch III are linearly arranged on the upper surface ofthe upper-layer dielectric substrate, and are bilaterally symmetrical along the center of a dielectric substrate. According to the highly-isolated three-array element micro-strip planar antenna array, the isolation degree of adjacent antenna array elements at the working frequency bands can be obviously improved.
Description
technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a highly isolated three-element microstrip planar antenna array. Background technique [0002] The development of mobile communication technology is changing with each passing day, and the requirements of communication systems for transmission rate and channel capacity are constantly increasing. Multiple-Input Multiple-Output (MIMO) technology has gained widespread attention and applications because of its advantages of greatly increasing channel capacity without increasing transmission bandwidth and transmission power. However, the distance between the array elements in the integrated MIMO system is small, which causes each antenna radiation array element to interact with each other and produce a mutual coupling effect, thereby deteriorating the overall radiation performance of the antenna array and reducing the transceiver efficiency of the communication system. The...
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IPC IPC(8): H01Q21/06H01Q1/52
CPCH01Q1/523H01Q21/065
Inventor 于彦涛李萌赵国强陈世勇黄天聪
Owner CHONGQING UNIV