Unlock instant, AI-driven research and patent intelligence for your innovation.

Antenna apparatus and signal transmission system

A technology of signal transmission system and antenna device, which is applied in the direction of loop antenna with ferromagnetic material core, transportation and packaging, anti-theft vehicle accessories, etc., which can solve the problems of increased vehicle weight and number of parts, and achieve space saving Effect

Active Publication Date: 2010-07-14
SUMIDA CORP
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is originally desired to reduce the weight of the antenna device mounted on the car, etc., but if the antenna device for transmitting and receiving signal radio waves is provided separately, the number of parts will increase, which will become the main reason for the weight increase of the car. reason

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antenna apparatus and signal transmission system
  • Antenna apparatus and signal transmission system
  • Antenna apparatus and signal transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Below, refer to Figure 1 to Figure 7 An embodiment of the present invention will be described. In the present embodiment, an example of the antenna device 1 for the transmission antenna of the keyless entry and the reception antenna of the antitheft device is described.

[0021] First, the overall operation of the keyless entry system and the anti-theft device will be described.

[0022] In the prior art, a car equipped with a keyless entry system transmits signal waves of a predetermined frequency around the car body (within a range of several meters). The frequency of this signal radio wave is, for example, 125 kHz or 134.2 kHz. Then, when the key receives a signal radio wave from the car, it loads its own ID on the signal radio wave, and transmits, for example, a 315 MHz signal radio wave to the car. After the car receives the 315MHz signal wave from the key, it authenticates based on the ID stored in advance. Then, under the situation that the car confirms that...

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

The invention provides an antenna apparatus, which has a simple structure and can be simultaneously used to the transmission and receiving of the signal electrical wave, wherein the antenna apparatus includes a first magnetic magnet core, with a open-magnetic circuit structure; an antenna coil, coiled on the first magnetic magnet core, one end of which is connected to the first terminal; a second magnetic magnet core having a closed magnetic circuit structure; an auxiliary coil, coiled on the second magnetic magnet core, wherein one end of auxiliary coil is connected to the other end of the antenna coil, and the other end of the auxiliary coil is connected to the second terminal.

Description

technical field [0001] The present invention provides an antenna device and a signal transmission system. In particular, the antenna device and signal transmission system can be mounted on, for example, a car door or the like, and used when locking / unlocking a door lock. Background technique [0002] Conventionally, there is known a keyless entry system (keyless entry system) that can realize locking / unlocking of a door of a car or the like without inserting a key into a keyhole (cylinder). For example, in a remote control device with a key used in a keyless entry system (hereinafter, simply referred to as a key remote controller), a button for instructing locking or unlocking, and a button for generating a predetermined frequency by pressing the button by the user are provided. Antenna devices for signal radio waves, etc. In addition, if the user presses the button of the key fob, the door can be locked or unlocked even if the user is several meters away from the car. In ...

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(China)
IPC IPC(8): H01Q7/06B60R25/01B60R25/24
Inventor 岩崎纪阳上田穗积
Owner SUMIDA CORP