Disclosure of Invention
An object of the embodiment of the utility model is to provide an electronic tags antenna, electronic tags and metal casing, this electronic tags antenna can reach anti metal effect, avoids shielding, the coupling of metal, ensures that the radio frequency signal of electronic tags antenna transmission also can be received to the receiver even the electronic tags antenna is in near metal object.
In a first aspect, an embodiment of the present invention provides an electronic tag antenna, including: the medium substrate, the first radiation surface and the second radiation surface are attached;
the first radiation surface is provided with a metal short circuit ring and a first metal slot, and a spacing area is arranged between the metal short circuit ring and the first metal slot;
the second radiation surface is provided with a second metal slot and a third metal slot which correspond to the metal short-circuit ring and the first metal slot in position, the metal short-circuit ring is electrically connected with the second metal slot, and the first metal slot is electrically connected with the third metal slot, so that the first radiation surface and the second radiation surface form a closed loop structure;
the dielectric substrate is arranged between the first radiating surface and the second radiating surface and is positioned in the spacing area.
Preferably, the first radiation surface includes a first radiation plate and a second radiation plate;
the first radiation plate and the second radiation plate are connected through a chip; and the plate surfaces of the first radiation plate and the second radiation plate are different in size.
Preferably, the metal short-circuit ring and the first metal slot protrude from the first radiation surface and are flush with a plate surface of the dielectric substrate facing the second radiation surface.
In a second aspect, embodiments of the present invention provide an electronic tag, including any one of the electronic tag antennas of the first aspect.
Preferably, the electronic tag further includes a chip connecting the first radiation plate and the second radiation plate, a front surface case, and a back surface case;
the front shell is physically connected with the back shell to form a closed space;
wherein, the electronic tag antenna and the chip are both arranged in the closed space.
Preferably, four edges of the front surface case are inclined surfaces.
Preferably, two second round holes are oppositely arranged at two ends of the front shell;
the second round hole is collinear with the metal short circuit ring and the first metal slot hole.
Preferably, a plurality of first round holes are arranged on the first radiation surface;
the plurality of first round holes are used for being matched with an injection molding machine so as to fix the injection molding position of the first radiation surface during injection molding.
Preferably, the back shell is provided with a plurality of third round holes and two fourth round holes;
the number of the third round holes is the same as that of the first round holes, and the positions of the third round holes correspond to those of the first round holes one by one;
the positions of the two fourth round holes correspond to the positions of the two second round holes respectively.
In a second aspect, an embodiment of the present invention provides a metal shell, which is an outer shell of an electronic device, and is characterized in that the metal shell is provided with the above-mentioned electronic tag.
The embodiment of the utility model provides an electronic tags antenna, electronic tags and metal casing, wherein, electronic tags antenna includes dielectric substrate, the first radiating surface and the second radiating surface of laminating; the first radiation surface is provided with a metal short circuit ring and a first metal slot, and a spacing area is arranged between the metal short circuit ring and the first metal slot; the second radiation surface is provided with a second metal slot and a third metal slot which correspond to the metal short-circuit ring and the first metal slot in position, the metal short-circuit ring is electrically connected with the second metal slot, and the first metal slot is electrically connected with the third metal slot, so that the first radiation surface and the second radiation surface form a closed-loop structure; the dielectric substrate is arranged between the first radiation surface and the second radiation surface and is positioned in the spacing area. The utility model discloses electronic tags antenna utilizes above-mentioned structure, can reach the anti-metal effect, avoids shielding, the coupling of metal, ensures that the radio frequency signal of electronic tags antenna transmission also can be received to the receiver even the electronic tags antenna is in near metal object.
Detailed Description
Various aspects and features of the present invention are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art which are within the scope and spirit of this invention.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the invention.
These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also understood that, although the present invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the invention, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present invention will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the invention in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
The description may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the present invention.
Specifically, the utility model provides an electronic tags antenna includes first radiating surface 1 and the second radiating surface 2 of laminating, still includes dielectric substrate 3.
Fig. 1 is a schematic structural diagram of a first radiation surface 1 and a chip 4 according to an embodiment of the present invention, where the first radiation surface 1 is made of a metal material (including copper, aluminum, etc., and can be adjusted according to specific use conditions and manufacturer requirements). Specifically, the first radiation surface 1 includes a first radiation plate 11, a second radiation plate 12, and a chip 4; a gap exists between the first radiation plate 11 and the second radiation plate 12, the gap makes the first radiation plate 11 and the second radiation plate 12 disconnected, and feed points are arranged on both sides of the gap and used for transmitting signals. As shown in fig. 1, the first radiation plate 11 and the second radiation plate 12 are connected through the chip 4.
It should be noted that the first radiation plate 11 and the second radiation plate 12 have different plate sizes, and as shown in fig. 1, the first radiation plate 11 and the second radiation plate 12 have the same width in the first direction and have different heights in the second direction.
The first radiation surface 1 is provided with a metal short circuit ring 13 and a first metal slot 14, and a spacing area is arranged between the metal short circuit ring 13 and the first metal slot 14. Specifically, in the embodiment of the present invention, the metal short-circuit ring 13 is disposed on the first radiation plate 11, and the first metal slot 14 is disposed on the second radiation plate 12 for illustration and illustration, but the embodiment of the present invention is not limited thereto, and the first metal slot 14 may also be disposed on the first radiation plate 11, so as to dispose the metal short-circuit ring 13 on the second radiation plate 12.
Here, the first metal slot 14 on the first radiation surface 1 is used to adjust the impedance and the directional diagram of the electronic tag antenna, for example, the first metal slot 14 is extended to the edge of the first radiation surface 1 along the first direction, the electronic tag antenna is capacitive, and the frequency is shifted toward the high frequency
Fig. 2 is a schematic structural diagram of a second radiation surface 2 according to an embodiment of the present invention, it can be seen that the second radiation surface 2 is provided with a second metal slot 21 and a third metal slot 22, and positions of the second metal slot 21 and the third metal slot 22 correspond to positions of the metal short-circuit ring 13 and the first metal slot 14 respectively, the metal short-circuit ring 13 is electrically connected to the second metal slot 21, and the first metal slot 14 is electrically connected to the third metal slot 22, so that the first radiation surface 1 and the second radiation surface 2 are attached to each other through the metal short-circuit ring 13, the first metal slot 14, the second metal slot 21 and the third metal slot 22.
The embodiment of the utility model provides a second radiant surface 2 is used for the reflection and adjusts the impedance, and is concrete, and second metal slot 21 and third metal slot 22 on the second radiant surface 2 are used for adjusting resonant frequency, and first metal slot 14 and second metal slot 21, third metal slot 22's the fluting degree of depth have asymmetric structure for current distribution is asymmetric.
Fig. 3 is a schematic cross-sectional structure diagram of an electronic tag according to an embodiment of the present invention, and it can be seen that the dielectric substrate 3 is located between the first radiation surface 1 and the second radiation surface 2, and is located in a spacing region between the metal short-circuit ring 13 and the first metal slot 14.
The widths of the second metal slot 21 and the third metal slot 22 on the second radiation surface 2 in the second direction are adjusted to perform impedance debugging, directional diagram, lobe width adjustment, gain effect optimization and the like, along with the increase of the width in the second direction, the impedance returns to the capacitive region from the capacitive region to the inductive region along with the increase of the width, the antenna gradually shifts to a high frequency, and when the directional diagram and the gain value reach the inductive region and form a conjugate impedance with the impedance of the chip 4, the transmission effect of the radio frequency signal of the electronic tag antenna is optimal. The metal short circuit ring 13 and the first metal slot 14 of the first radiation surface 1 are matched with the second metal slot 21 and the third metal slot 22 of the second radiation surface 2, so that the debugging effect is suitable for various application scenes. For those skilled in the art, the widths of the second metal slot 21 and the third metal slot 22 in the second direction can be calculated and simulated according to the different impedances of the chip 4, so as to perform precise adjustment, thereby achieving the best effect of the electronic tag antenna.
The embodiment of the utility model provides a medium base plate 3 is ordinary printed circuit board to glass cloth substrate FR4 is given first place to the basic technology preparation with the system circuit board forms, the embodiment of the utility model provides an just no longer describe excessively. The medium substrate 3 made of FR4 has the characteristics of high pressure resistance and high temperature resistance, and the dielectric constant can be controlled, so that the medium substrate is suitable for integral injection molding, can realize higher protection level and achieves good waterproof effect. Further, the metal short circuit ring 13 and the first metal slot 14 protrude from the first radiation surface 1 and are flush with the surface of the dielectric substrate 3 facing the second radiation surface, wherein the standard thickness of the dielectric substrate 3 is 1.6mm, which can ensure that the dielectric constant is constant, but in the specific implementation, the thickness can be adjusted according to the actual situation.
The embodiment of the utility model provides an in above-mentioned electronic tags antenna, can make the electronic tags antenna reach anti metal effect, avoided shielding, the coupling of metal, even directly paste the label on the metal, can not influence the radio frequency signal's of electronic tags antenna transmission effect and reading and writing distance yet. Further, compare in the unable closely work at the metal object surface of antenna in traditional anti metal electronic tags, need bigger volume could satisfy and accord with the use scene, the embodiment of the utility model provides an in the electronic tags antenna first radiant surface 1 is integrated through standard printed circuit board to set the edge of electronic tags antenna to the inclined plane, reduce the size of anti metal electronic tags antenna, satisfy aesthetic property and practicality. Meanwhile, the magnetic induction lines on the metal surface are cut as a whole by the asymmetric first radiation plate 11 and the asymmetric second radiation plate 12, and energy is obtained by continuously cutting the magnetic induction lines, so that reading and identification (transmission of radio frequency signals) are performed.
The embodiment of the utility model also provides an electronic label containing the above-mentioned electronic label antenna, this electronic label still includes chip 4, front shell 5 and the back shell 6 of connecting first radiating plate and second radiating plate, and front shell 5 and back shell 6 physical connection form the enclosure space; the electronic tag antenna (i.e. the first radiation surface 1, the second radiation surface 2, the dielectric substrate 3) and the chip 4 are all located in the enclosed space formed by the front shell 5 and the back shell 6.
Fig. 4 is a schematic structural diagram of the front case 5 according to the embodiment of the present invention, four edges of the front case 5 are inclined planes, and an angle formed between the inclined plane in the first direction and the plane of the front case 5 is smaller than an angle formed between the inclined plane in the second direction and the plane of the front case 5. Wherein, the front shell 5 is provided with first round hole 51 on the inclined plane of second side, can fix electronic tags on fixed asset with multiple mode through first round hole 51, realizes that electronic tags works under multiple application scene.
The electronic tag antenna is positioned when the electronic tag is subjected to injection molding, so that the electronic tag after injection molding is unqualified. In order to solve this problem, as shown in fig. 1, a plurality of second circular holes 15 are provided on the first radiation surface 1; as shown in fig. 2, the second radiation surface 2 is provided with a plurality of third circular holes 23, and the number of the second circular holes 15 is the same as that of the third circular holes 23, and the positions of the second circular holes correspond to those of the third circular holes 23 one by one. The plurality of second circular holes 15 and the plurality of third circular holes 23 are used for being matched with an injection molding machine so as to fix the injection molding positions of the first radiation surface 1 and the second radiation surface 2 during injection molding, and therefore the position of the medium substrate 3 in a mold is not deviated. Fig. 1 and 2 show 4 second circular holes 15 and 4 third circular holes 23, but the embodiment of the present invention is not limited thereto, and the number of the second circular holes 15 and the number of the third circular holes 23 may be determined according to actual situations, such as the fixing member of the injection molding machine, the size of the first radiation surface 1, and the like.
Fig. 5 is a schematic structural diagram of the back cover 6 according to the embodiment of the present invention, wherein a plurality of fourth circular holes 61 are formed in the back cover 6; the number of the fourth round holes 61 is the same as that of the second round holes 15, and the positions of the fourth round holes are in one-to-one correspondence respectively, so that the positions of the fourth round holes 61 in the cavity of the injection molding machine table are adjusted, the problem that the injection molding process is insufficient in injecting glue of the medium substrate 3 is solved, the injection molding machine table can continuously inject glue, and a key effect is achieved for stable molding. The back shell 6 further comprises two fifth round holes 62, the positions of the two fifth round holes 62 correspond to the two first round holes 51 respectively, and the electronic tag is fixed on the asset through the first round holes 51 and the fifth round holes 62.
The electronic tag provided by the embodiment of the utility model is obtained by integrally injection molding the chip 4 and the high-reliability weather-resistant engineering plastic (the front shell 5 and the back shell 6), thereby facilitating batch production; based on the first round hole 51 arranged on the front shell 5 and the fifth round hole 62 arranged on the back shell 6, the electronic tag has a plurality of mounting modes, including but not limited to glue, bracket fixing, rivet crimping and the like; and the functions of water resistance, dust resistance, earthquake resistance and the like can be realized.
The embodiment of the utility model provides an electronic tags antenna among electronic tags is passive anti metal label antenna, need not to install the battery, adopts frequency hopping mode, does not receive the restriction and the influence of label quantity in the workspace, can work under the complicated operating mode conditions such as the indoor and outdoor equipment management of environment abominable relatively, storage, mould, electric power industry, and the memory can erase and write more than 10000 times repeatedly, and life can follow the whole life cycle of product.
The embodiment of the utility model provides a still provide a metal casing, use the shell body for electron device, when using, be provided with above-mentioned electronic tags on this metal casing, ensure that the receiver can receive the radio frequency signal of electronic tags transmission.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.