CN102386475A - Radio frequency identification device (RFID) electronic tag type panel antenna - Google Patents

Abstract

The invention discloses a radio frequency identification device (RFID) electronic tag type panel antenna. The panel antenna comprises a substrate, a metal radiation layer, a metal grounding layer and an RFID chip, wherein the substrate is provided with a front surface and a back surface; the metal radiation layer is arranged on the front surface of the substrate; the metal grounding layer is arranged on the back surface of the substrate; the RFID chip is arranged on the front surface of the substrate; and the two sides of the RFID chip are provided with a plurality of connecting pins which are electrically connected with the metal radiation layer and the metal grounding layer. The panel antenna with the RFID electronic tag can be applied on an object with a metal surface or a big metal area or a liquid object, an RFID reader is not disturbed while reading data.

Description

The plate aerial of RFID electronic tag formula

Technical field

The present invention relates to a kind of RFID electronic tag, relate in particular to a kind of plate aerial of the RFID of having electronic tag function.

Background technology

The RFID electronic tag is to be used on the logistics field widely.It can be stored in the related data of commodity, credit card or gate inhibition's card in the RFID chip, after being read by the RFID reader, can carry out the checking out of commodity, commodity inventory control, POS and identification identity etc.

Employed on the market at present RFID electronic tag has a plastic tab earlier when making, on this plastic tab, make receiving and transmitting antenna, again a RFID chip is pasted on plastic tab, the pin of this RFID chip again with the antenna electrically connect.When the RFID electronic tag completes, directly on the surface that antenna and RFID chip are arranged, be coated with viscose, the RFID electronic tag can be pasted on commodity.

Because traditional typical R FID electronic tag limited use is in such environmental effects, in water, in the liquid or damp atmosphere all form easily and disturb and diffraction, perhaps the metal surface error rate that also can cause data to read is higher.

Summary of the invention

Main purpose of the present invention is to improve the disappearance of traditional RFID electronic tag, and the present invention combines the RFID chip and the plate aerial of RFID electronic tag.Because the area of the metal ground plane of plate aerial is big more; Make under the better situation of the reception of plate aerial; Plate aerial with RFID electronic tag can be used on metal covering or the article of metallic area than big or liquid;, will can not be interfered during at the RFID reader in reading of data.

In order to reach above-mentioned purpose, the present invention provides a kind of plate aerial of RFID electronic tag formula, comprising:

One substrate is ceramic material, has a positive and back side on it;

One metal radiating layer is located on the front of this substrate, and the area of this metal radiating layer equals the area of this substrate front surface or less than the area of this substrate front surface, has at least one first electrode part in a side of this metal radiating layer;

One metal ground plane; Be located on the back side of this substrate; The area of this metal ground plane equals the area at this substrate 1 back side or less than the area of this backside of substrate, a side of this metal ground plane has at least one second electrode part, and this second electrode part extends on the front of this substrate;

One RFID chip is located on the front of this substrate, and these RFID chip both sides have a plurality of pins, this pin and this first electrode part and the second electrode part electrically connect.

In order to achieve the above object, the present invention does not provide a kind of plate aerial of RFID electronic tag formula, comprising:

One substrate; Its upper surface has a metal radiating layer and the back side and has one and connect layer with connecing metal; Be penetrated with a signal feeding body in this substrate; First termination of this signal feeding body and this metal radiating layer electrically connect, second termination of this signal feeding body then is through to the bottom of substrate, this second termination not with this metal ground plane electrically connect;

One RFID chip is electrically connected between this second termination and this metal ground plane.

Effect of the present invention is, let plate aerial can be used in metal covering with RFID electronic tag metallic area is big or the article of liquid on,, will can not be interfered during at the RFID reader in reading of data.

Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.

Description of drawings

Fig. 1 plate aerial of the present invention and RFID chip decomposing schematic representation;

Fig. 2 plate aerial of the present invention and RFID chip portfolio schematic appearance;

Fig. 3 plate aerial schematic rear view of the present invention;

Fig. 4 plate aerial schematic top plan view of the present invention;

Fig. 5 is the section cross-sectional schematic of Fig. 4 in the 5-5 position;

Fig. 6 is a user mode sketch map of the present invention;

Fig. 7 is the another embodiment of the present invention sketch map;

Fig. 8 is the side cross-sectional schematic of Fig. 7;

Fig. 9 is an embodiment schematic top plan view again of plate aerial of the present invention;

Figure 10 is an embodiment elevational schematic view again of plate aerial of the present invention.

Wherein, Reference numeral

Plate aerial 10

Substrate 1

Positive 11

The back side 12

Metal radiating layer 2

First electrode part 21

Metal ground plane 3

Second electrode part 31

RFID chip 4

Pin 41

Housing 5

Base 51

Accommodation space 511

Groove 512

Joining hole 513

Gum 52

Loam cake 53

Outer surface 531

Inner surface 532

Air-vent 533

Waterproof and breathable film 54

Metal car plate 20

RFID reader 30

Plate aerial 40

Substrate 6

Metal radiating layer 61

Metal ground plane 62

Signal feeding body 63

First termination 631

Second termination 632

Embodiment

Now relevant detailed description of the present invention and technology contents cooperate graphic explanation following at present:

See also Fig. 1, Fig. 2, Fig. 3, be plate aerial of the present invention and the decomposition of RFID chip and combination outward appearance and plate aerial schematic rear view.As shown in the figure: the plate aerial 10 of RFID electronic tag formula of the present invention comprises: a substrate 1, a metal radiating layer 2, a metal ground plane 3 and a RFID chip 4.

This substrate 1 is processed a square or rectangular body by ceramic material, has positive 11 and one back side 12 on it.

This metal radiating layer 2; Be located on the front 11 of this substrate 1; This metal radiating layer 2 is in order to receive and to transmit; And the distribution area of this metal radiating layer 2 equals the area of this substrate 1 positive 11 or less than the area of this substrate 1 positive 11, has at least one first electrode part (microstrip line) 21 in a side of this metal radiating layer 2.

This metal ground plane 3; Be located on the back side 12 of this substrate 1; This metal ground plane 3 is in order to ground connection; And the distribution area of this metal ground plane 3 equals the area at this substrate 1 back side 12 or less than the area at this substrate 1 back side 12, has at least one second electrode part 31 in a side of this metal ground plane 3, and this second electrode part 31 extends on the front 11 of this substrate 1.

This RFID chip 4 is prior art, is located on the front 11 of this substrate 1, and the both sides of this RFID chip 4 have a plurality of pins 41, this pin 41 and this first electrode part 21 and second electrode part, 31 electrically connects.This RFID chip can receive the signal that external RF ID reader (not shown) is launched through metal radiating layer 2, and the signal of RFID chip 4 is passed to the RFID reader.

See also Fig. 4, Fig. 5, for plate aerial of the present invention overlook and Fig. 4 in the section cross-sectional schematic of 5-5 position.As shown in the figure: as from diagram, can to know that the front 11 of seeing this substrate 1 has metal radiating layer 2; The back side 12 of this substrate 1 has a metal ground plane 3, this RFID chip 4 of electrically connect between first electrode part 21 of this metal radiating layer 2 and second electrode part 31 of metal ground plane 3.Because RFID chip 4 is located on the plate type antenna 10; Because of the area of the metal ground plane 3 of this plate aerial 10 big more; Make the reception and the launching effect of plate aerial 10 good more; Therefore the RFID electronic tag can be used on the bigger metal object product (not shown) of volume, let and receive and transmit can not be interfered, be different from traditional RFID electronic tag and can't use on the product of the metal object that larger volume is arranged.

For example, see also Fig. 6 simultaneously, the plate aerial 10 that the present invention will have RFID electronic tag formula is installed on the metal car plate 20 of vehicle; The metal ground plane 3 at this substrate 1 back side 12 is with after the metal car plate 20 of vehicle contacts; Contact area is increased, make the reception of plate aerial 10 and launching effect better, and when emission and reception signal; Can not receive the interference of big metal object yet, let outside RFID reader 30 can read the stored data of RFID chip 4.

See also Fig. 7, Fig. 8, be the survey cross-sectional schematic of another embodiment of the present invention and Fig. 7.As shown in the figure: the plate aerial of RFID electronic tag formula of the present invention is after completing; Can plate aerial 10 of the present invention be installed in the housing 5 that plastics process, this housing 5 comprises: a base 51, a gum 52, a loam cake 53 and a waterproof and breathable film 54.

This base 51; The accommodation space 511 that has a ccontaining plate aerial 10 on it; These accommodation space 511 peripheries have a groove 512, and this groove 512 can be placed waterproof bar or a gluing in this groove 512 in order to winding loam cake 53 when winding loam cake 53; When loam cake 53 is connected to this groove 512, can reach waterproof effect.In addition, on this base 51 and be positioned at accommodation space 511 both sides and have a corresponding joining hole 513, but this joining hole 513 supply these base 51 interlockings or be fixed on this metal object, perhaps multiple double faced adhesive tape is pasted at base 51 back sides, directly sticks on these article.

This gum 52 for double faced adhesive tape or viscose any, is fixed in this accommodation space 511 in order to this plate aerial 10 is pasted.

This loam cake 53 is connected in this groove 512, has an outer surface 531 and an inner surface 532 on it, has on this outer surface 531 always to put on to cover 53 air-vent 533.

This waterproof and breathable film 54; Be covered on the inner surface 532 of this loam cake 53 and seal this air-vent 533; This waterproof and breathable film 54 makes outside aqueous vapor can not enter into 511 li of accommodation spaces; Accommodation space 511 inner gas or aqueous vapors can be passed through 54 discharges of waterproof and breathable film simultaneously, let accommodation space 511 keep dry state.

See also Fig. 9, Figure 10, for the embodiment again of plate aerial of the present invention overlooks and elevational schematic view.As shown in the figure: another kind of plate aerial 20 of the present invention; Substrate 6 with a cubical ceramic material; These substrate 6 surfaces have a metal radiating layer 61 and the back side has a metal ground plane 62, are penetrated with a signal feeding body 63 in this substrate 6, first termination 631 and these metal radiating layer 61 electrically connects of this signal feeding body 63; 632 bottoms that are through to substrate 6, second termination of this signal feeding body 63; This second termination 632 not with these metal ground plane 62 electrically connects, this second termination 632 and this metal ground connection connect the layer 62 between electrically connect one RFID chip 4 is arranged, to form the plate aerial that another kind has the RFID electronic tag.

Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (10)

1. the plate aerial of a RFID electronic tag formula is characterized in that, comprising:

One substrate has a positive and back side on it;

One metal radiating layer is located on the front of this substrate;

One metal ground plane is located on the back side of this substrate;

One RFID chip is located on the front of this substrate, and these RFID chip both sides have a plurality of pins, this pin and this metal radiating layer and this metal ground plane electrically connect.

2. the plate aerial of RFID electronic tag formula according to claim 1 is characterized in that, this substrate is a ceramic material, and this substrate is square or rectangular body.

3. the plate aerial of RFID electronic tag formula according to claim 1; It is characterized in that; The area of this metal radiating layer equals the area of this substrate front surface or less than any of the area of this substrate front surface; One side of this metal radiating layer has and has one first electrode part at least, the pin electrically connect of this first electrode part and this RFID chip one side.

4. the plate aerial of RFID electronic tag formula according to claim 1; It is characterized in that; The area of this metal ground plane equals the area of this backside of substrate or less than any of the area of this backside of substrate; One side of this metal ground plane has at least one second electrode part, and this second electrode part extends on the front of this substrate, the pin electrically connect of this second electrode part and this RFID chip opposite side.

5. the plate aerial of RFID electronic tag formula according to claim 1 is characterized in that, the housing that also has plastics encapsulates this plate aerial, and this housing comprises:

One base has the accommodation space of a ccontaining plate aerial on it, this accommodation space periphery has a groove; And,

One loam cake is connected in this groove, has an outer surface and an inner surface on it, has the air-vent of always putting on lid on this outer surface.

6. the plate aerial of RFID electronic tag formula according to claim 5 is characterized in that, this groove is provided with any of a waterproof bar or gluing in this groove when the winding loam cake, when loam cake is connected to this groove, to reach waterproof effect.

7. the plate aerial of RFID electronic tag formula according to claim 5; It is characterized in that; On this base and be positioned at the accommodation space both sides and have a corresponding joining hole; Dispose a gum in the accommodation space of this base, this gum is any of double faced adhesive tape or viscose, is fixed in this accommodation space in order to this plate aerial is pasted.

8. the plate aerial of RFID electronic tag formula according to claim 5 is characterized in that, also has a waterproof and breathable film, is covered on the inner surface of this loam cake and seals this air-vent.

9. the plate aerial of a RFID electronic tag formula is characterized in that, comprising:

One substrate; Its upper surface has a metal radiating layer and the back side and has one and connect layer with connecing metal; Be penetrated with a signal feeding body in this substrate; First termination of this signal feeding body and this metal radiating layer electrically connect, second termination of this signal feeding body then is through to the bottom of substrate, this second termination not with this metal ground plane electrically connect;

One RFID chip is electrically connected between this second termination and this metal ground plane.

10. the plate aerial of RFID electronic tag formula according to claim 19 is characterized in that, this substrate is a ceramic material, and this substrate is a cube.

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