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Anti-multipath interference positioning antenna

A technology for positioning antennas and anti-multipath, applied to antennas, antenna coupling, antennas suitable for movable objects, etc., can solve problems such as large dimensions, heavy antenna weight, and large equipment space in automobiles, and achieve multipath effects The effects of reduced error, small amplitude and phase changes, and easy installation

Pending Publication Date: 2022-06-24
SHENZHEN SOUTH STAR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The vertical thickness of this kind of positioning antenna with choke coil is greater than 1 / 4 wavelength of the working frequency band, and its external dimension is relatively large, which affects the appearance design of the automobile and occupies a large equipment space of the automobile. In addition, this kind of The weight of the antenna is heavy, the material cost is high, and the processing is difficult

Method used

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  • Anti-multipath interference positioning antenna
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  • Anti-multipath interference positioning antenna

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Embodiment Construction

[0018] Example embodiments will now be described more fully with reference to the accompanying drawings. Exemplary embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of exemplary embodiments conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0019] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that, in the present disclosure, the terms "comprising", "configured with", and "disposed on" are used to indicate an open-ended inclusive meaning...

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Abstract

The invention relates to the technical field of wireless communication, and discloses an anti-multipath interference positioning antenna comprising a GNSS antenna, a choke structure, a low noise amplifier and a shielding box which are connected in sequence. The choke structure comprises a circular-ring-shaped substrate and metal layers covering the two surfaces and the center side face of the substrate. The radial width of the metal layer is 0.25 lambda, and lambda is the wavelength corresponding to the center frequency of electromagnetic waves received by the GNSS antenna. According to the anti-multipath interference positioning antenna, the choke structure is horizontally arranged, and the metal layer is printed on the substrate to form the metal groove with the opening in the side edge, so that interference of reflected / refracted multipath signals right behind / laterally behind the GNSS antenna can be suppressed, the thickness of the positioning antenna can be greatly reduced, and the positioning antenna can be conveniently installed in a narrow space. For a positioning antenna with multi-frequency signal receiving capability, a plurality of choke structures can be arranged along the thickness direction and / or the width direction, so that reflection / refraction signals in each frequency band can be inhibited.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a positioning antenna with anti-multipath interference. Background technique [0002] At present, more and more cars have automatic driving or assisted driving functions. As part of the automatic driving system, the navigation and positioning system has a great demand for high-precision positioning antennas. The anti-multipath interference signal has higher requirements. A common practice is to use chock ring technology to make a set of concentric metal grooves around the navigation and positioning antenna with a size of 1 / 4 wavelength depth of the antenna's operating frequency band, to convert the multipath (reflection and refraction) of the same satellite. The signals are canceled by inversion. The thickness of the positioning antenna with the choke coil is greater than 1 / 4 wavelength of the working frequency band in the vertical direction, and its...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/32H01Q1/52H01Q5/20
CPCH01Q1/36H01Q1/3233H01Q1/52H01Q5/20H01Q1/526
Inventor 梁胜潘银军李民
Owner SHENZHEN SOUTH STAR TECH
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