CN2514505Y

CN2514505Y - Aerial loop structure

Info

Publication number: CN2514505Y
Application number: CN 01231804
Authority: CN
Inventors: 赵清泉; 陈志安
Original assignee: Tianhan Technology Co ltd
Current assignee: Waltop International Corp
Priority date: 2001-07-18
Filing date: 2001-07-18
Publication date: 2002-10-02
Anticipated expiration: 2011-07-18

Abstract

Disclosed is a structure of an antenna return circuit, the antenna return circuit is composed of a plurality of sets of n-shaped antenna sections, because every two adjacent n-shaped antenna sections of each antenna return circuit are arranged in an opposite position, when the antenna return circuit is disturbed by externally strong electromagnetic noises, pressures of opposite polarities will be generated by the two opposite positioned adjacent n-shaped antenna sections instead of signal which is generated under the effects of the external electromagnetic noises, thereby the externally strong electromagnetic noises can be counteracted, and the antenna return circuit has the function of reducing the disturbance of electro-magnetism.

Description

The antenna loop structure

Invention field

The utility model relates to a kind of antenna loop, and particularly a kind of antenna loop that forms by most group Jiong shape section antennas utilizes two adjacent Jiong shape section antennas to be the opposite state of phase place, to offset the interference of external electromagnetic noise.

Background technology

It receives the electromagnetic field of launching from wireless pen wireless electromagnetic number of fields letter stencil, be to utilize at circuit board with X, the impartial pitch arrangement of Y-axis array becomes the antenna loop of grid network, come the induction wireless pen to calculate its absolute coordinate, see also the schematic diagram (is example with the X-axis) that digiboard antenna loop shown in Figure 1 is arranged, every day, line loop 10 1 ends connected a switch 11, the other end is ground connection then, detect the signal of line loop 10 inductions every day through control to switch 11, because magnetic field intensity and square distance are inversely proportional to, the time writer of emission electromagnetic field is apart from antenna when far away more, can make that the received signal of antenna is faint more, opposite, the time writer of emission electromagnetic field is apart from antenna when near more, can make that the received signal of antenna is strong more,, and analyze the received signal power of each antenna as long as allow the microprocessor all antenna loops of P-SCAN one by one of digiboard, just can learn that time writer is sitting in the scope of that strip antenna, and must calculate its position coordinates.

Information products are handled towards two-forty now, H.D direction develops, yet the fast more easy more electromagnetic interference of following of processing speed, and the application scenario of digiboard, generally be accompanied by other information products around it, particularly for large-area digiboard, because of the antenna amount of its layout increases thereupon, be the switch use amount of reduction antenna, and by increasing antenna Jiong shape loop, because the increase of antenna length, more be subject to the interference of electromagnetic noise thereupon, the monitor institute width of cloth electromagnetic interference of penetrating particularly, and can influence the correct calculation of time writer position, therefore, how to eliminate the interference that the digiboard antenna is subjected to external electromagnetic noise, become the major subjects of research.

Summary of the invention

Main purpose of the present utility model is to be to provide a kind of antenna loop structure that reduces electromagnetic interference function that has, the formation of its antenna loop is to form by most Jiong shape sections, utilize two adjacent Jiong shape sections to form the opposite loop of phase place, to offset the interference of electromagnetic noise.

For realizing the purpose of this utility model, we propose a kind of antenna loop structure, its antenna loop is made of most Jiong shape section antennas, every group of two Jiong shape section antennas that antenna loop is adjacent wherein, be to be the opposite state of phase place, antenna loop structure whereby, the external electromagnetic noise of its induction, can offset by two adjacent Jiong shape section antennas of antenna loop, and have the function that reduces electromagnetic interference.

Described antenna loop structure, wherein said antenna loop are formed by odd number Jiong shape section antenna.

Described antenna loop structure, wherein said antenna loop are formed by even number Jiong shape section antenna.

A kind of antenna loop structure of digiboard, it is to be arranged to grid network with X, all equidistant majority group antenna loop of Y-axis array, wherein said antenna loop is made of most Jiong shape section antennas, every group of two Jiong shape section antennas that antenna loop is adjacent wherein, be to be the opposite state of phase place, antenna loop structure whereby, the external electromagnetic noise of its induction, be able to offset, and have the function that reduces electromagnetic interference by two adjacent Jiong shape section antennas of antenna loop.

The antenna loop structure of described digiboard, more wherein said antenna loop are formed by odd number Jiong shape section antenna.

The antenna loop structure of described digiboard, more wherein said antenna loop are formed by even number Jiong shape section antenna.

As mentioned above, the utility model provides a kind of antenna loop structure that reduces electromagnetic interference function that has, the formation of its antenna loop is to form by most Jiong shape sections, and utilizes two adjacent Jiong shape sections to form the opposite loop of phase place, the interference that can offset electromagnetic noise.

Description of drawings

Fig. 1 is the schematic diagram of conventional digital plate antenna loop;

Fig. 2 is the schematic diagram of the utility model by the formed antenna loop structure of majority group Jiong shape section antenna;

Fig. 3 is the opposite state of phase place to offset the schematic diagram of electromagnetic noise interference for the utility model antenna loop by adjacent two Jiong shape section antennas.

Embodiment

Antenna loop structure of the present utility model, its antenna loop is to constitute by most Jiong shape section antennas, see also shown in Figure 2, the antenna loop X1-X12 that the antenna loop structure that it provides comprises has 12 groups altogether, and every group of antenna loop forms by most Jiong shape section antennas 21, the formed Jiong shape of other antenna loop section antenna 21 that wherein the Jiong shape section antenna of every group of antenna loop is adjacent with it, be to adhere to different antenna loops separately, so can tell time writer is to be arranged on which Jiong shape section antenna of antenna loop, two Jiong shape section antennas, 21 (A as antenna loop X5, B), the Jiong shape section antenna 21 of other adjacent with it antenna loop, be to belong to antenna loop X4, X6 and X12, X2, when time writer is positioned at the A position Jiong shape section antenna 21 of antenna loop X5, by with reference to its adjacent antenna loop X4, the signal that X6 produced, can tell time writer is to be arranged on the Jiong shape section antenna of antenna loop X5 A position, for eliminating the interference that antenna loop is subjected to external electromagnetic noise, the technological means that the utility model utilizes, see also shown in Figure 3, the adjacent two Jiong shape section antennas 21 that are the antenna loop by every group are to be the opposite state of phase place, so, when antenna loop 2 of the present utility model is subjected to external powerful magnetic interference, it is subjected to external electromagnetic wave effect and the signal that produces, then can pass through the opposite adjacent two Jiong shape section antennas 21 of phase place, the voltage that polarization is opposite and cancelling out each other, and must eliminate the interference of extraneous noise, it is to be formed by even number Jiong shape section antenna that Fig. 3 A demonstrates every group of antenna loop, and it is to be formed by odd number Jiong shape section antenna that Fig. 3 B demonstrates every group of antenna loop.

The digiboard antenna loop, become grid network by above-mentioned antenna loop structure with X, the impartial pitch arrangement of Y-axis array, even then this digiboard is to be large tracts of land, it is subjected to external electromagnetic noise, all will offset and significantly reduce because of the opposite adjacent Jiong shape section antenna of phase place, and better noise immunocompetence arranged, and improve environment or its large-area factor of its tired electromagnetic noise interference greatly, and limit its scope of application and space.

More than given accompanying drawing and explanation; it only is preferred embodiment of the present utility model; be not to be used to limit enforcement of the present utility model; generally be familiar with this technology the personage its comply with spirit of the present utility model; variation of being done or modification all should be encompassed in the protection range of claim of the present utility model.

Claims

1. antenna loop structure, its antenna loop are made of most Jiong shape section antennas, and it is characterized in that: every group of two Jiong shape section antennas that antenna loop is adjacent are to be the opposite state of phase place.

2. antenna loop structure as claimed in claim 1 is characterized in that: described antenna loop is formed by odd number Jiong shape section antenna.

3. antenna loop structure as claimed in claim 1 is characterized in that: described antenna loop is formed by even number Jiong shape section antenna.

4. the antenna loop structure of a digiboard, it is to be arranged to grid network with X, all equidistant majority group antenna loop of Y-axis array, it is characterized in that: described antenna loop is made of most Jiong shape section antennas, wherein every group of two Jiong shape section antennas that antenna loop is adjacent are to be the opposite state of phase place.

5. the antenna loop structure of digiboard as claimed in claim 4, it is characterized in that: more described antenna loop is formed by odd number Jiong shape section antenna.

6. the antenna loop structure of digiboard as claimed in claim 4, it is characterized in that: more described antenna loop is formed by even number Jiong shape section antenna.