Hollow circular double-band single-layer microstrip antenna

A technology of microstrip antenna and hollow circle, which is applied in the field of satellite navigation, can solve the problems of inadaptability, thick dual-frequency point microstrip antenna, etc., and achieve the effect of improving positioning accuracy, high gain at low elevation angle, and increasing gain at low elevation angle

Inactive Publication Date: 2017-02-22
OLINKSTAR CORP
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  • Abstract
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Problems solved by technology

However, the current dual-frequency point microstrip antenna mostly adopts the form of stacking two dielectric plates, so

Method used

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  • Hollow circular double-band single-layer microstrip antenna
  • Hollow circular double-band single-layer microstrip antenna
  • Hollow circular double-band single-layer microstrip antenna

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Example Embodiment

[0025] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] like figure 1 As shown, it is a schematic structural diagram of an embodiment of a hollow circular dual-frequency circularly polarized single-layer microstrip antenna according to an embodiment of the present invention.

[0027] It includes a metal radiating plate 4, a dielectric substrate 3 and a metal reflective base plate 1; the metal radiating plate 4 and the metal reflective base plate 1 are respectively arranged on the upper and lower sides of the dielectric substrate 3; the metal radiating plate 4 is a hollow metal with the central circular area 5 cut out The radiation plate makes the surface current flow along the edge of the hollow area, and realizes radiation or reception of electromagnetic wave signals at two operating frequency points of high frequency and low frequency by changing the current path; set coaxial feed point 2 o...

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Abstract

The invention provides a hollow circular double-band single-layer microstrip antenna, which adopts the hollow circular microstrip radiation mode, and can not only work in two frequency points concurrently without increasing the thickness of the antenna, but also can significantly improve the low elevation gain as compared with the ordinary microstrip antenna. The hollow circular double-band single-layer microstrip antenna comprises a metal radiation plate, a medium substrate and a metal reflective substrate, wherein the metal radiation plate and the metal reflective substrate are respectively arranged on the upper surface and the lower surface of the medium substrate, and the metal radiation plate is a hollow metal radiation plate that excides the center circular area so that the surface current flows along the edge of the hollow area. By changing the current path, radiation can be realized or the electromagnetic signals of the high frequency and low frequency points can be received. The metal radiation plate is provided with coaxial feed points used for connecting with a feeder line, and the electromagnetic wave can be fed in.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, in particular to a hollow circular dual-frequency single-layer microstrip antenna. It is used in the Beidou satellite navigation system, and is also applicable to various navigation satellite systems including the GPS system of the United States, the Galileo system of Europe, and the GLONASS system of Russia. Background technique [0002] The Beidou satellite navigation system is the third mature satellite navigation system after the GPS system of the United States and the GLONASS system of Russia. Affected by the orbit of Beidou navigation satellites, satellite navigation receivers are used on land in China, and most satellites of the Beidou system are distributed at elevation angles between 15 degrees and 75 degrees. Therefore, an ideal receiving antenna has the strongest gain at an elevation angle of 15° to 75°. However, the current microstrip antennas have the strongest gain in...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08H01Q5/20
CPCH01Q1/38H01Q5/20H01Q13/08
Inventor 不公告发明人
Owner OLINKSTAR CORP
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