CN201087909Y

CN201087909Y - Electronic label antenna composed of words and letters

Info

Publication number: CN201087909Y
Application number: CNU2006200483135U
Authority: CN
Inventors: 菅洪彦
Original assignee: KUNRUI ELECTRONIC SCIENCE-TECHNOLOGY Co Ltd SHANGHAI
Current assignee: KUNRUI ELECTRONIC SCIENCE-TECHNOLOGY Co Ltd SHANGHAI; Shanghai Quanray Electronics Co Ltd
Priority date: 2006-11-30
Filing date: 2006-11-30
Publication date: 2008-07-16
Anticipated expiration: 2016-11-30

Abstract

The utility model discloses an electronic label antenna composed of letters. The top of the letters at two sides of a feeding point of the antenna is connected with the bottom to form an inductive ring. A fold line formed by the up-down connection of adjacent solid letters forms two arms of a dipole. The electronic label antenna of the utility model forms a letter fold line mode through alternately connecting the upper part and the lower part of adjacent solid English letters, and the length of the antenna is shortened, at the same time, the letters also play a role for advertisement and propagandism. The top of the letters at two sides of the feeding point of the antenna is connected with the bottom to form the inductive ring, so the impedance matching between the antenna and a chip is convenient.

Description

The electronic label antenna that a kind of writing letter constitutes

Technical field

The utility model relates to antenna technical field, the electronic label antenna that particularly a kind of writing letter constitutes.

Background technology

In recent years, automatic identifying method is in many service fields, aspect sale of goods and the logistics distribution, in commercial department, obtained popularizing fast and promoting in manufacturing enterprise and the material field of circulation.

Several years ago, bar code---paper tape has caused a revolution and has obtained extensive use in the recognition system field.Today, this bar code---paper tape can not satisfy people's demand under increasing situation.Though bar code is very cheap, its weak point is that storage capacity is little and can not rewrite.

A kind of technical best solution be with storage in a silicon.In daily life, having the IC-card of arranging the contact (phone IC-card, bank card etc.) is the most general structure of electric data carrier.Yet concerning IC-card, in many cases, the connection of mechanical contact is insecure.Data between the reader under data medium and one are carried out non-contact transmission with much flexible.According to the energy and the data transmission method that use, we are called radio-frequency recognition system (RFID-Radio FrequencyIdentification) to non-contacting recognition system.Therefore, RFID is that a kind of radio wave that utilizes is read and write programmed recording medium, radio-frequency technique is combined with the IC-card technology and can be used for the technology of remote, moving-target, wireless identification.

Rfid system is in concrete application process, and according to different application purposes and applied environment, the composition of system can be different, but with regard to its operation principle, system generally all is made up of transponder, reader and PC.Transponder should be placed on the object that will discern, can send and receive information, and can do processing such as read/write according to the operational order of receiving; Reader is to gather transponder information and transponder is sent the device of operational order, and the order of sending comprises read/write, selects order such as cancellation selections grade.

Antenna is a critical component in radio communication and the radar system as the equipment of a kind of reception and launching electromagnetic wave, and it is the interface of free space and transmission line, is commonly referred to " electronic eyes " or " electronic ear ".The effect of antenna in various radiotechnics equipment is identical basically.Any radiotechnics equipment all transmits signal by electromagnetic wave, and it must have the energy radiation or receive electromagnetic device, and antenna is exactly this device, so the effect of antenna at first is exactly radiation and receives electromagnetic wave.Based on such prerequisite, since the generation of wireless communication technique, antenna just has been born thereupon.

From the simplest wire antenna, surface antenna, antenna technology has experienced innovation for several times.Along with the expansion in antenna applications field, being showing improvement or progress day by day of wireless communication technology, people are more and more higher to the requirement of antenna: operating distance is far away as much as possible, and it is big as much as possible to gain, and power consumption is as much as possible little, and efficient is high as much as possible, and polarization is coupling or the like as much as possible.Invented technology such as microstrip antenna and antenna array in recent years again, made antenna be applied in more field, intelligence communication field particularly is such as the TD-SCDMA mobile phone.

Electronic tag prints on paper or the plastic film for the label that reduces cost often adopts, and label is attached to and means to have different resonance frequencys on the different objects like this.The environment of periphery is also bigger to the resonance frequency influence of electronic tag.Also having the frequency range of the electronic tag of UHF is 860MHz-960MHz, than the frequency band of broad, guarantee that country variant uses certain frequency band wherein, and label can use in any country.It is very necessary designing wide band electronic label antenna for this reason.

The most frequently used form of label antenna is half-wave dipole or short dipole, as shown in Figure 1a.Because the half-wavelength of hyperfrequency is greatly about about 15 centimetres, long based on the length of the label antenna of half-wave dipole, often adopt two arms of the broken line of bending, as Fig. 1 b as dipole antenna for this reason.Broken line can reduce the length of dipole antenna, and then reduces the cost of label.

On the broken line basis of bending people such as Mikko Keskilammi 2004 at IEEE ANTENNAS ANDWIRELESS PROPAGATION LETTERS, ' Using Text as a Meander Line forRFID Transponder Antennas ' has described three kinds of literal antennas to have delivered article.Wherein the literal of Fig. 2 a is the contour edge that adopts literal, and its bottom connects.And Fig. 2 b is to finish by alternately being connected of adjacent literal top and bottom with Fig. 2 c.Literal is the form that adopts profile equally.Such literal antenna can play the effect of advertising simultaneously with the name of company as antenna.

The utility model content

The utility model is the deficiency that overcomes above-mentioned prior art, and the technical problems to be solved in the utility model provides the electronic label antenna that a kind of writing letter constitutes.

For solving the problems of the technologies described above, the technical solution of the utility model is:

The electronic label antenna that a kind of writing letter constitutes, the top of putting the letter on both sides at the routed electricity of antenna all links to each other with the bottom, has constituted inductive loop, and the broken line that adjacent solid writing letter connects and composes has up and down been formed two arms of dipole.

Compared with prior art, the beneficial effects of the utility model are: the utility model electronic label antenna, by adjacent solid English alphabet top and the bottom alternately being connected and composed the broken line form of literal, shortened the length of antenna, literal also plays advertisement function simultaneously; The top of putting the letter on both sides at the routed electricity of antenna all links to each other with the bottom, has constituted inductive loop, the impedance matching between convenient antenna and the chip.

Description of drawings

Fig. 1 a is the dipole antenna schematic diagram of the utility model routine;

Fig. 1 b is the dipole antenna that the broken line of the utility model routine constitutes;

Fig. 2 a is first kind of dipole antenna schematic diagram that the broken line of the utility model prior art writing letter outline line formation is formed;

Fig. 2 b is second kind of dipole antenna schematic diagram that the broken line of the utility model prior art writing letter outline line formation is formed;

Fig. 2 c is the third dipole antenna schematic diagram that the broken line of the utility model prior art writing letter outline line formation is formed;

Fig. 3 is the dipole antenna schematic diagram that the broken line of the solid writing letter formation of the utility model is formed.

Number in the figure: the 30th, the routed electric point of dipole antenna; The 31st, inductive loop; The 32nd, two arms of the dipole that the broken line that adjacent solid writing letter connects and composes is up and down formed.

Embodiment

Further specifically describe the utility model antenna below in conjunction with the accompanying drawing example.

See also the dipole antenna schematic diagram of the broken line composition of the solid writing letter formation of Fig. 3 the utility model.The electronic label antenna that the utility model writing letter constitutes, the top of putting the letter on 30 both sides at the routed electricity of this dipole antenna all links to each other with the bottom, constituted inductive loop 31, the broken line that adjacent solid writing letter connects and composes has up and down been formed two arms 32 of dipole.

It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims

1. the electronic label antenna that constitutes of a writing letter is characterized in that:

Top at the letter on routed electric point (30) both sides of antenna all links to each other with the bottom, has constituted inductive loop (31), and the broken line that adjacent solid writing letter connects and composes has up and down been formed two arms (32) of dipole.