Multi-frequency point and wide-beam circular polarization loop antenna
A loop antenna and wide beam technology, applied in the field of circularly polarized loop antennas with multi-frequency points and wide beams, achieves the effects of reducing the complexity of the feeding structure, simple antenna structure, and large frequency ratio
Active Publication Date: 2017-03-22
江苏道博信息技术有限公司
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Problems solved by technology
At present, there are no reports or patents on loop antennas with multi-frequency points, wide beams, and circular polarization performance at the same time. Its research and design are of great significance for improving the performance of satellite navigation systems such as GPS / Beidou.
Method used
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Embodiment 1
[0032] like figure 1As shown, in this embodiment, the metal floor 1 is set as a circular metal floor, the diameter of the circular metal floor is 190mm, and the thickness is 0.25mm; the grounded metal wall 2 is set as a rectangular metal wall, and the rectangular grounded metal wall The closed body formed is a square body, the cross section of the closed body is square, the perimeter of the closed body is 360 mm, the height is 36 mm, and the wall thickness is set to 0.02 mm; the four loop antennas in the closed body are all set as square metal rings , and the perimeters of the first loop antenna 3, the second loop antenna 4, the third loop antenna 5, and the fourth loop antenna 6 are set to 234mm, 196mm, 165mm, and 124.64mm respectively, and the heights are 23mm, 18mm, 9mm, and 5mm in sequence , the line width is 1.2mm, and the thickness is 0.02mm.
[0033] like figure 2 As shown, the first loop antenna 3, the second loop antenna 4, the third loop antenna 5 and the midpoint...
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The invention discloses a multi-frequency point and wide-beam circuit polarization loop antenna. The multi-frequency point and wide-beam circuit polarization loop antenna comprises a metal floor, wherein a sealing body is arranged on the metal floor and comprises a grounding metal wall, a first loop antenna, a second loop antenna, a third loop antenna and a fourth loop antenna are sequentially arranged in the sealing body from top to bottom and are concentrically arranged in a layered way, and the perimeters of the first loop antenna, the second loop antenna, the third loop antenna and the fourth loop antenna are sequentially reduced. The multi-frequency point and wide-beam circuit polarization loop antenna implemented by the invention is simple in structure and low in manufacturing cost; with the adoption of single feed, a plurality of working frequency points are achieved, and the complexity of a feeding structure is reduced; with the adoption of an n-shaped structure, multi-frequency point working of probe feeding can be achieved in a relatively wide frequency band range, and a relatively large frequency ratio can be acquired; and by the antenna, wide beam and circulation polarization both can be achieved in the plurality of working frequency points.
Description
technical field [0001] The invention belongs to the technical field of loop antennas, in particular to a circularly polarized loop antenna with multi-frequency points and wide beams. Background technique [0002] The satellite navigation and positioning system has the advantages of real-time, high precision, and all-weather, and plays an important role in the national economy and human life. In the satellite navigation and positioning system, the antenna, as the terminal for transmitting electromagnetic waves and the front end for receiving electromagnetic waves, has an important impact on the performance of the system. [0003] With the development of satellite navigation systems, their working frequency bands are gradually increasing. For example, the uplink of the Beidou first-generation navigation system is located at 1615.68MHz in the L-band, and the downlink is located at 2491.75MHz in the S-band; in the subsequent Beidou second-generation navigation system, the workin...
Claims
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IPC IPC(8): H01Q1/38H01Q1/50H01Q7/00
CPCH01Q1/38H01Q1/50H01Q7/00Y02D30/70
Inventor 朱旗邢红兵
Owner 江苏道博信息技术有限公司