CN202434688U

CN202434688U - Near-field communication antenna

Info

Publication number: CN202434688U
Application number: CN2011205372036U
Authority: CN
Inventors: 金正敏; 徐珍旭; 蔡正勋
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Acoustic Technologies Changzhou Co Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-09-12
Anticipated expiration: 2021-12-20

Abstract

The utility model relates to a near-field communication antenna, which comprises a substrate, an antenna coil and a flexible circuit board. The antenna coil is provided with a conductive terminal and is attached on the surface of the substrate; the flexible circuit board is electrically connected with the conductive terminal; a notch matched with an outline of the flexible circuit board is arranged at a position where the substrate corresponds to the flexible circuit board; and the part (corresponding to the substrate) of the flexible circuit board is positioned in the notch. With the adoption of the near-field communication antenna, because the thickness is low, the conductive terminal of the antenna coil can be electrically conducted with the outside through the flexible circuit board relatively conveniently and flexibly.

Description

The near-field communication antenna

[technical field]

The utility model relates to field of antenna, relates in particular to a kind of near-field communication antenna.

[background technology]

NFC (Near Field Communication) is integrated by non-contact radio-frequency identification (RFID) and the technology of interconnecting and develops, and is a kind of technology that is used for wireless near field communication.NFC is combining induction card reader, induction type card and point-to-point function on one chip, can in short distance, discern and exchanges data with compatible equipment.The radio-frequency technique that the NFC technology is mainly moved based on the 13.56MHz frequency; Its transmission range is littler than RFID; The transmission range of RFID can reach several meters even tens meters; But because NFC has taked unique signal attenuation technique, NFC has characteristics such as distance is near, bandwidth is high, energy consumption is low with respect to RFID.So NFC operates between with interior distance at 10-20 centimetre, its message transmission rate can be 106,212 or 424kbps, than Infrared Transmission sooner, more reliably, simpler, more safer than bluetooth.

RFID more is used in production, logistics, tracking, the asset management, and the then main application target of NFC Near Field Communication technology is gate inhibition, public transport, mobile-phone payment, electronic bill, to the equality communication and the fields such as read write line terminal of message reference in moving, contact type intelligent card, smart card.Mobile phone can be formed the RFID mixed-media network modules mixed-media through built-in NFC chip, is used for defrayment, also can regard rfid interrogator, is used as exchanges data and collection.Thereby let people through any equipment, accomplish payment in any place, any time, obtain services such as information.

The NFC antenna performance is determining near-field communication distance and NFC electric terminal machine performance in the NFC electric terminal.For operating distance and the performance that guarantees near-field communication satisfies code requirement; The NFC antenna at NFC terminal adopts the planar coil antenna of multiturn usually at present; And coil dimension and thickness are relatively large, and, in the time of especially on being applied to mobile phone; Can only be attached on the cell phone rear cover, limit the application flexibility of NPC antenna.Plane N FC antenna does not obviously meet the development trend that the electronic terminal product volume reduces day by day.The current problem that need to solve is how under the satisfactory prerequisite of NFC operating distance that guarantees the NFC electric terminal, and the size that reduces the NFC antenna is to meet the design concept that current NFC electric terminal reduces volume day by day.

Therefore, be necessary a kind of new near-field communication antenna to be provided to above-mentioned shortcoming.

[utility model content]

It is relatively large that the purpose of the utility model is to solve above-mentioned near-field communication antenna thickness, and production cost is high, the deficiency that manufacturing process is complicated, and a kind of near-field communication antenna is provided.

A kind of near-field communication antenna; Comprise substrate and be attached to substrate surface and have the aerial coil of conducting terminal; Said near-field communication antenna also comprises the flexible PCB that electrically connects with said conducting terminal; The position of the corresponding flexible PCB of said substrate is provided with the notch with flexible PCB outline coupling, and the part of said flexible PCB counterpart substrate is positioned at said notch.

Preferably, said near-field communication antenna also comprises the first double faced adhesive tape layer of cloth that covers the aerial coil upper surface and is attached to the cover sheet of the first double faced adhesive tape layer of cloth upper surface, and the second double faced adhesive tape layer of cloth that sticks on base lower surface.

Preferably, also be provided with the 3rd double faced adhesive tape layer of cloth between said aerial coil and the substrate.

Preferably, said substrate is a ferrite-plate.

Preferably, said aerial coil comprises first inductance coil and is positioned at the second regional inductance coil that said first inductance coil surrounds.

Preferably; Said conducting terminal comprises first input end, first lead-out terminal that belongs to first inductance coil and second input terminal, second lead-out terminal that belongs to second inductance coil, and said first input end, first lead-out terminal and second input terminal, second lead-out terminal and flexible PCB electrically connect respectively.

Preferably, said flexible PCB is provided with respectively a plurality of electric connection terminals that electrically connect with first input end, first lead-out terminal, second input terminal and second lead-out terminal, and said electric connection terminal is set up in parallel.

The beneficial effect of the utility model is: the near-field communication antenna thickness of this structure is thin, and the conducting terminal of aerial coil can conduct with the external world through flexible PCB is convenient neatly.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of the utility model near-field communication antenna;

Fig. 2 is the matching chart of substrate, aerial coil and flexible PCB among Fig. 1;

Fig. 3 is the explosive view of substrate, aerial coil and flexible PCB among Fig. 2.

[embodiment]

Below in conjunction with accompanying drawing and execution mode the utility model is described further.

Like Fig. 1, Fig. 2 and shown in Figure 3; The utility model provides a kind of near-field communication antenna 1; Comprise substrate 10, be attached to said substrate 10 lower surfaces the second double faced adhesive tape layer of cloth 11, be attached to said substrate 10 upper surfaces and have the aerial coil 12 of conducting terminal 121, the flexible PCB 13 that electrically connects with said conducting terminal 121, the cover sheet 15 that is attached to the first double faced adhesive tape layer of cloth 14 of said aerial coil 12 upper surfaces and is attached to the said first double faced adhesive tape layer of cloth, 14 upper surfaces, between said aerial coil 12 and substrate 10, the 3rd double faced adhesive tape layer of cloth 16 can also be set.

Aforesaid substrate 10 preferably can be selected ferrite-plate, and said cover sheet 15 is used for protecting near-field communication antenna 1 not receive the damage of physics and environment, and said the 3rd double faced adhesive tape layer of cloth 16 is used for that near field communication antenna 1 is adhered to destination apparatus and gets on.Be provided with the notch 101 that matees with flexible PCB 13 outlines in the position of said substrate 10 corresponding flexible PCBs 13; The part of said flexible PCB 13 counterpart substrates 10 is positioned at said notch 101; Like this, the thickness of near-field communication antenna 1 can not increase thickness because of increasing flexible PCB 13.

In the embodiment of the utility model; The said aerial coil 12 that has conducting terminal 121 comprises first inductance coil 122 and is positioned at the second regional inductance coil 123 that said first inductance coil 122 surrounds; Said aerial coil 12 can be single inductance coil; Said conducting terminal 121 comprises first input end 1221, first lead-out terminal 1222 that belongs to first inductance coil 122 and belongs to second input terminal 1231, second lead-out terminal 1232 of second inductance coil 123; Said flexible PCB 13 is provided with respectively and first input end 1221, first lead-out terminal 1222,

second input terminal

1231 and 1232 welding of second lead-out terminal and a plurality of electric connection terminals 131 of electrically connecting, and said electric connection terminal 131 is set up in parallel.Like this, no matter how many circles of aerial coil 12 coilings can weld respectively through flexible PCB 13 easily and realize to electrically connect, and can not increase the thickness of near-field communication antenna 1, and manufacturing process be simpler, production cost is lower.

Above-described only is the preferred embodiments of the utility model; Should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; Can also make improvement, but these all belong to the protection range of the utility model.

Claims

1. near-field communication antenna; Comprise substrate and be attached to substrate surface and have the aerial coil of conducting terminal; It is characterized in that: said near-field communication antenna also comprises the flexible PCB that electrically connects with said conducting terminal; The position of the corresponding flexible PCB of said substrate is provided with the notch with flexible PCB outline coupling, and the part of said flexible PCB counterpart substrate is positioned at said notch.

2. near-field communication antenna according to claim 1; It is characterized in that: said near-field communication antenna also comprises the first double faced adhesive tape layer of cloth that covers the aerial coil upper surface and is attached to the cover sheet of the first double faced adhesive tape layer of cloth upper surface, and the second double faced adhesive tape layer of cloth that sticks on base lower surface.

3. near-field communication antenna according to claim 2 is characterized in that: also be provided with the 3rd double faced adhesive tape layer of cloth between said aerial coil and the substrate.

4. near-field communication antenna according to claim 3 is characterized in that: said substrate is a ferrite-plate.

5. according to claim 3 or 4 described near-field communication antennas, it is characterized in that: said aerial coil comprises first inductance coil and is positioned at the second regional inductance coil that said first inductance coil surrounds.

6. near-field communication antenna according to claim 5; It is characterized in that: said conducting terminal comprises first input end, first lead-out terminal that belongs to first inductance coil and second input terminal, second lead-out terminal that belongs to second inductance coil, and said first input end, first lead-out terminal and second input terminal, second lead-out terminal and flexible PCB electrically connect respectively.

7. near-field communication antenna according to claim 6; It is characterized in that: said flexible PCB is provided with respectively a plurality of electric connection terminals that electrically connect with first input end, first lead-out terminal, second input terminal and second lead-out terminal, and said electric connection terminal is set up in parallel.