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Antenna system

一种天线系统、天线的技术，应用在天线、天线耦合、传输系统等方向，能够解决电波接收性能下降等问题，达到抑制接收性能降低的效果

Inactive Publication Date: 2016-07-27
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise radiated from such electronic equipment affects radio waves in the MF (mid-frequency) band or LF (low-frequency) band, so the reception performance of radio waves in the MF band or LF band of the antenna may be degraded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, in the drawings for explaining the embodiment, unless the direction is particularly described, the direction on the drawing is indicated, and the direction of the reference in each drawing corresponds to the direction of the symbols and numerals. In addition, directions such as parallel and right angles are directions that allow deviations to an extent that does not impair the effects of the present invention. In addition, as the window glass to which the present invention can be applied, for example, a front window glass attached to the front part of a vehicle, a rear window glass attached to the rear part of a vehicle, a side window glass attached to a side part of a vehicle, a window glass attached to the roof of a vehicle, Skylight glass, etc.

[0038] figure 1 This is a schematic diagram for explaining the configuration of the antenna sys...

Embodiment approach 2

[0086] Figure 7 It is a schematic diagram showing the structure of Embodiment 2. like Figure 7 shown, for a figure 2 The member of the same structure as the shown embodiment 1 is used with figure 2 The marker symbols for the same marker symbols. Descriptions of the same structures as those in Embodiment 1 are omitted.

[0087] In Embodiment 2, the processing of the output cable 93 of the noise source 90 and figure 2 A different example of Embodiment 1. In more detail, figure 2 The output cable 92 extends in the direction away from the window frame, but Figure 7 The output cable 93 of the middle noise source 90 extends along the window frame and is close to the first antenna 10 . In Embodiment 2, both the noise generator 91 and the output cable 93 will be described as noise sources. The noise generator 91 and the output cable 93 are independent noise sources, so the second antenna 20 is preferably installed closer to the noise generator 91 and the output cable 9...

Embodiment 1

[0096] (Conductor length of the first antenna conductor 17 and the second antenna conductor 25)

[0097] The results obtained by actually measuring the gain of the antenna by attaching a window glass for an automobile provided with a glass antenna to an actual vehicle will be described.

[0098] In the AM broadcast band, when receiving radio waves, the conductor length is the main factor compared to the pattern of the antenna conductor. Therefore, in this embodiment, a power supply point is provided at the upper corner of the window glass. The result when the antenna conductor is linearly extended in the lateral direction will be described.

[0099] First, the characteristics of an antenna that is to be received in the AM broadcast band will be described. Figure 9A It is a graph showing the relative relationship between the conductor length of the antenna conductor and the voltage received by the antenna. In other words, Figure 9A It is a graph showing the measured value ...

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PUM

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Abstract

An antenna system comprises: a first antenna that has a first antenna conductor and a first feeding point and that receives broadcast waves of a predetermined frequency band; a second antenna that has a second antenna conductor and a second feeding point and that receives noise from a noise source; and a cancel device that cancels, from the received signals acquired by the first antenna, the noise signals acquired by the second antenna. The antenna system is adjusted such that: the radio waves of the broadcast waves of the predetermined frequency band equally reach the first and second antennas; the reception gain of the predetermined frequency band received by the second antenna is lower than the reception gain of the predetermined frequency band received by the first antenna; and the output of the noise received by the first antenna is equal to the output of the noise received by the second antenna.

Description

technical field [0001] The present invention relates to an antenna system equipped on a vehicle such as an automobile. Background technique [0002] So-called hybrid vehicles and electric vehicles that use both an engine and an electric motor are equipped with electronic devices such as an electric motor and an inverter. Noise radiated from such electronic equipment affects radio waves in the MF (intermediate frequency) band or LF (low frequency) band, and thus the reception performance of the antenna in the MF band or the LF band may be degraded. [0003] Patent Document 1, for example, is known as a technique for coping with electromagnetic interference caused by noise radiated from a noise source in a vehicle. Patent Document 1 discloses a technique for electromagnetic interference of broadcast signals. [0004] Patent Document 1 discloses a technique in which an antenna for receiving broadcast waves (broadcast wave antenna) is arranged at a position where broadcast wav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H01Q1/32H01Q3/26
CPCH01Q1/1271H01Q1/52H04B1/1009H04B1/126H04B1/0475
Inventor 船津聪史寺岛文贵
Owner AGC INC
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