Planar antenna

一种平面天线、天线的技术，应用在天线、环形天线、谐振天线等方向，能够解决不是圆极化特性等问题，达到改善接收特性的效果

Inactive Publication Date: 2007-03-07
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, neither application aims to obtain good circular polarization characteristics

Method used

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Examples

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Effect test

no. 1 example

[0042]FIG. 1 is a schematic plan view showing the structure of a planar antenna according to a first embodiment of the present invention. In the planar antenna of FIG. 1, on a dielectric substrate (hereinafter, simply referred to as "dielectric" or "substrate") 10 made of, for example, glass or ceramics, a dipole antenna element (linear antenna element) 1 is formed, which The dipole antenna element is a linear antenna conductor supplied with power (feed) from the feed point 1e. The substrate can be divided into two regions (sections) with the dipole antenna element 1 as a boundary. In one of these two divisions (the portion above the dipole antenna element 1 in FIG. 1), a first loop antenna element 2 is formed in the vicinity of one end 1a of the dipole antenna element 1, which serves as an electromagnetic coupling loop. The parasitic loop antenna element is not supplied with power and is loop (rectangular). The first loop antenna element 2 is arranged in such a manner that ...

no. 2 example

[0053] Fig. 7 is a schematic plan view showing the structure of a planar antenna according to a second embodiment of the present invention. In the planar antenna of FIG. 7, on one surface (x-y plane) of a dielectric substrate 10 made of, for example, glass or ceramics, a four-sided (rectangular) loop antenna element (feeding loop antenna element) 1A is formed. The loop antenna element 1A is supplied with electric power (feeding) from a feeding point 1e. In the vicinity of one side 11 of the two opposite (in the x-axis direction) sides (short sides) of the feeding loop antenna element 1A, a parasitic rectangular loop antenna element (antenna conductor serving as an electromagnetic coupling loop) 2 is provided, and the loop antenna The long side of the element 2 extends along the y-axis direction. In addition, another parasitic rectangular loop antenna element (antenna conductor serving as an electromagnetic coupling loop) 3 is provided in the vicinity of the other side 12, and...

no. 3 example

[0063]Fig. 9 is a schematic plan view showing the structure of a planar antenna according to a third embodiment of the present invention. In the planar antenna of FIG. 9, on one surface (x-y plane) of a dielectric substrate 10 made of, for example, glass or ceramics, a folded dipole antenna element 1B is formed, and the folded dipole antenna element is fed from a feeding point 1e. Supply electricity (feed). In the vicinity of one side 15 of the two opposite (in the y-axis direction) sides (long sides) 15 and 16 of the antenna element 1B, a parasitic rectangular loop antenna element (antenna conductor serving as an electromagnetic coupling loop) 2 is provided, and the loop antenna The long side of the element 2 extends along the y-axis direction. In addition, another antenna element (antenna conductor serving as an electromagnetic coupling loop) 3 is provided in the vicinity of the other side 16, and the long side of the loop antenna element 3 extends along the y-axis directio...

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PUM

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Abstract

planar antenna. The planar antenna of the present invention comprises: a linear antenna element (1) to be supplied with electric power; and loop parasitic antenna elements (2, 3) arranged in the vicinity of said linear antenna element (1), said linear antenna element and loop parasitic antenna elements are disposed on one side of the dielectric substrate (10). This simple arrangement provides a planar antenna with good circular polarization properties.

Description

technical field [0001] The invention relates to a planar antenna. The present invention specifically relates to a technique adapted to generate circularly polarized waves using an antenna formed on a dielectric substrate. Background technique [0002] Recently, vehicles (movable objects) such as automobiles are often equipped with antennas for high-band GPS (Global Positioning System) and antennas for receiving satellite radio waves of satellite digital broadcasting. In addition, an antenna for transceive radio waves is required in an ETC (Electronic Toll Collection) system that automatically charges expressways and toll roads, and a wireless telecommunication system is required in a VICS (Vehicle Information Communication System) that provides traffic information. mark. [0003] For such radio waves to be transceived by movable objects, circularly polarized waves are employed in GPS radio waves, satellite radio waves for satellite broadcasting, and ETC radio waves. Most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/32H01Q1/38
CPCH01Q9/16H01Q9/26H01Q7/00H01Q1/32H01Q21/24
Inventor 安德雷·安德连科马庭透
Owner FUJITSU LTD
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