A wide-beam navigation antenna with broadband fss structure and double s-shaped probe feeding

A split resonant ring, wide beam technology, applied in the radiating element structure, antenna coupling, antenna grounding device and other directions, can solve the problem that the 3dB beam width and antenna bandwidth are not wide enough, the low elevation angle gain is not high, and it is difficult to meet the requirements of satellite navigation, etc. problem, to achieve the effect of being conducive to miniaturized design, improving feeding efficiency, and reducing the length of space

Active Publication Date: 2019-12-10
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The feeding structure of ordinary microstrip antenna is simple, but affected by surface waves, the low elevation gain is not high, and the 3dB beam width and antenna bandwidth are not wide enough, which is difficult to meet the requirements of satellite navigation

Method used

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  • A wide-beam navigation antenna with broadband fss structure and double s-shaped probe feeding
  • A wide-beam navigation antenna with broadband fss structure and double s-shaped probe feeding
  • A wide-beam navigation antenna with broadband fss structure and double s-shaped probe feeding

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0033] like figure 1 As shown, a dielectric substrate 102 with a dielectric constant εr=2.2, a radius r=28mm, and a thickness h=0.5mm is selected as the substrate of the split resonator ring. On the upper surface of the dielectric substrate, there are 4 large opening resonant rings 101a with an outer radius of r=11.5mm and an inner radius of r=9.5mm, and the opening diameter is 7.5mm; there are four other large openings with an outer radius of r=2.5mm and an inner radius of r=1.5mm The small split resonant ring 101b has an opening diameter of 1mm. The distance between the center of the large-aperture resonant ring 101a and the center of the dielectric substrate 102 is 16mm; the distance between the center of the small-aperture resonant ring 101b and the center of the dielectric substrate is 1...

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Abstract

The invention discloses a wide-beam navigation antenna adopting a broadband FSS structure having split-ring resonators in radiation crosslinked arrangement and double-S probe feed. Antenna bandwidth and beam width are broadened effectively, and application range is expanded. The antenna comprises the broadband FSS structure having the split-ring resonators in radiation crosslinked arrangement, a lampshade radiation structure and a double-S probe feed structure. Two kinds of split-ring resonators are uniformly arranged on the upper surface of a dielectric substrate in a radiation crosslinked manner; the upper edge of a truncated cone radiation surface is flush with the upper edge of a dielectric cylinder; and the lower edge of the truncated cone radiation surface is connected with the sidesurface of a metal cylinder with a wavy structure. A conical radiator body is arranged in the dielectric cylinder. Four double-S feed probes are arranged uniformly on a metal floor, and realize feeding according to phases of 0 degree, 90 degrees, 180 degrees and 270 degrees in sequence. Through the broadband FSS structure having the split-ring resonators in radiation crosslinked arrangement and the lampshade radiation structure, 3dB beam width of the antenna is expanded; and through the double-S probe feed structure, working bandwidth of the antenna is expanded, and application range of the antenna is also expanded.

Description

technical field [0001] The invention relates to the technical field of wide-bandwidth beam navigation antennas, in particular to a wide-band FSS structure adopting radiation staggered arrangement of split resonant rings and a wide-beam navigation antenna fed by double S-shaped probes. Background technique [0002] The wide-beam navigation antenna is an antenna mainly used for receiving satellite navigation signals. Good coverage is maintained within the range of 0° to 360° and elevation angles of 5° to 90°. In addition, the navigation antenna requires a wide 3dB beam width, high low elevation gain and a wide operating frequency band. Common microstrip antenna feed structure is simple, but affected by surface waves, low elevation gain is not high, 3dB beam width and antenna bandwidth are not wide enough, it is difficult to meet the requirements of satellite navigation. The broadband FSS structure with staggered radiating split resonator rings and the wide-beam navigation an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/52
Inventor 张岩贾诗童董涛殷杰王立伟
Owner BEIHANG UNIV
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