Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Patch antenna with wire radiation elements for high-precision GNSS applications

a technology of radiation elements and antennas, applied in the field of antennas, can solve the problems of overall design complexity, inability to meet the standard operation of high-precision gnss receivers, and inability to meet the standard operation of forward hemispheres, and achieve the effect of reducing directional patterns

Active Publication Date: 2019-05-09
TOPCON POSITIONING SYST INC
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes two different types of antennas that produce circularly-polarized signals. The first type uses a single-band antenna with a ground plane and patch connected by four wires, which create an extra electromagnetic field that reduces interference in the antenna's own field. This allows for a smaller ground plane and eliminates the need for an additional power supply. The second type is a dual-band antenna that includes a ground plane and two patches, connected by four wires, which also produce an extra electromagnetic field to reduce interference. However, the patent also addresses the potential for the wires to increase interference in the second type of antenna, and a solution is proposed to minimize this effect.

Problems solved by technology

If the length of the ground plane is equal to that of the patch, the DP level in the backward hemisphere is the same as in the forward hemisphere which is unacceptable for the standard operation of high-precision GNSS receivers.
However, potential drawbacks of such a design are the overall design complexity and the requirement of a separate supply line to power the loop radiator.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009]In accordance with an embodiment, a single-band right-hand circularly-polarized patch antenna comprises a ground plane and a patch connected to each other with at least four (4) wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch electromagnetic field in the nadir direction. In accordance with the embodiment, this facilitates an antenna with low DP level (i.e., Down / Up level) in the nadir direction and with a smaller (and shorter) ground plane such that the size of the ground plane becomes practically as long as the patch, and there is no additional power supply necessary to power the wires. In accordance with an embodiment the patch antenna is a single-band right-hand circularly-polarized patch antenna providing a reduced directional pattern in the backward hemisphere.

[0010]In accordance with ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A right-hand circularly-polarized patch antenna comprising a ground plane and a patch connected to each other with one or more wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch field in the nadir direction.

Description

TECHNICAL FIELD[0001]The present invention relates generally to antennas, and more particularly to patch antennas used in Global Navigation Satellite Systems (GNSS).BACKGROUND OF THE INVENTION[0002]A wide range of consumer, commercial, and industrial applications utilize patch antennas in GNSS applications which can determine locations with high accuracy. Currently deployed systems include the United States Global Positioning System (GPS) and the Russian GLONASS, and others such as the European GALILEO system are under development.[0003]In a GNSS, a navigation receiver receives and processes radio signals transmitted by satellites located within a line-of-sight of the navigation receiver. A critical component of a GNSS is the receiver antenna. Key properties of the receiver antenna include bandwidth, multipath rejection, size, and weight. High-accuracy navigation receivers typically process signals from two frequency bands. For example, two common frequency bands are a low-frequency...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): H01Q9/04H01Q5/385
CPCH01Q9/0428H01Q5/385H01Q9/0442H01Q9/0407H01Q9/0414
Inventor ASTAKHOV, ANDREY VITALIEVICHTATARNIKOV, DMITRY VITALIEVICHSHAMATULSKY, PAVEL PETROVICH
Owner TOPCON POSITIONING SYST INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com