Wrench type resonant ring loaded Beidou microstrip antenna

Abstract

A Beidou microstrip antenna loaded with a wrench-type resonant ring relates to a microstrip antenna. It is equipped with a dielectric substrate, a good conductor layer on the upper and lower surfaces, and a coaxial feed structure; the upper and lower surface layers are respectively coated on the upper and lower surfaces of the dielectric substrate; the upper surface layer is a square patch, and the square patch is set in the middle of the dielectric substrate. Two wrench-shaped resonant rings are symmetrically loaded on a group of opposite corners of the chip. The wrench-shaped resonant ring is composed of an isosceles right-angled triangle cut corner, a rectangular gap and a circular groove with a gap. The apex of the isosceles right-angled triangle cut corner and the square The vertex of the opposite corner selected by the patch coincides, and the two right-angled sides are located on the two sides of the square patch drawn from this vertex. One short side of the rectangular gap coincides with the hypotenuse of the cut corner of the isosceles right-angled triangle. The other short side is a chord of the outer circle of the ring groove, and the center of the ring groove is located on the diagonal of the group of diagonals selected for loading by the square patch; the coaxial inner conductor of the coaxial feed structure is connected to Square patch.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a large broadband, high-gain wrench-type resonant ring-loaded Beidou microstrip antenna compatible with the working frequency points of the Beidou satellite system and the GPS system. Background technique [0002] The Beidou Satellite Navigation and Positioning System (BeiDou) is a regional active three-dimensional satellite positioning and communication system (CNSS) independently developed by my country for all-weather, high-precision, large-scale, fast and real-time positioning. It is the third mature satellite navigation system after the US Global Positioning System (GPS) and the Russian GLONASS Satellite Navigation System (GLONASS). At present, the navigation system has realized the positioning, timing and message functions in China and its surrounding areas, and has gradually penetrated into many fields such as surveying and mapping, telecommunications, water conservancy, transportat...

AI Technical Summary

Problems solved by technology

However, general microstrip antennas also have problems such as narrow frequency band, low gain, and poor end-fire performance, and the shape of the antenna patch has a direct impact on the frequency band, gain, and polarization of the antenna.

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