CN114884587A - NFC monomer test equipment - Google Patents
NFC monomer test equipment Download PDFInfo
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- CN114884587A CN114884587A CN202210441108.9A CN202210441108A CN114884587A CN 114884587 A CN114884587 A CN 114884587A CN 202210441108 A CN202210441108 A CN 202210441108A CN 114884587 A CN114884587 A CN 114884587A
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- 238000012360 testing method Methods 0.000 title claims abstract description 137
- 239000000178 monomer Substances 0.000 title claims description 7
- 230000008878 coupling Effects 0.000 claims abstract description 38
- 238000010168 coupling process Methods 0.000 claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention provides NFC single body test equipment which is characterized by comprising a coupling unit, an antenna unit, a matching unit, a test fixture and a network analyzer; the coupling unit comprises a coupling coil, a place connecting point and a feed connecting point; the antenna unit comprises an antenna coil, a first test point and a second test point; the matching unit comprises a matching PCB, a matching circuit, a third test point and a fourth test point; the test fixture comprises a placing table, a fixture upper die and a fixture lower die; the upper jig die is connected with the bracket of the test jig through a slide rail and moves up and down; when the upper die of the jig is pressed down, the antenna coil and the matching unit form coupling, and current can form a magnetic field of a closed loop in a direction perpendicular to a current loop, so that one-time testing is completed, the testing error is small, the cost is low, the speed is high, and the matching network is simple in design and easy to maintain.
Description
Technical Field
The invention relates to the technical field of wireless communication testing, in particular to a single testing device for NFC antenna consistency testing.
Background
Near Field Communication (NFC) is a standard short-range communication technology based on Radio Frequency Identification (RFID) technology, and is increasingly applied to mobile communication devices (smart phones, tablet computers, electronic readers, etc.) and various wireless internet infrastructures. Devices with NFC typically establish wireless communication within a very short distance. Communication can also be achieved between the NFC device and an unpowered NFC chip or tag. The NFC standard operates in the existing High Frequency (HF) range of 13.56MHz, including standards that have been defined by the NFC Forum non-profit industry association.
The method is applied to a plurality of terminals including mobile phones, tablet computers, automobiles, payment terminals and the like. The near field communication service combines the near field communication technology and the mobile communication technology, realizes multiple functions of electronic payment, identity authentication, ticketing, data exchange, anti-counterfeiting, advertisement and the like, and is a novel service in the field of mobile communication. The near field communication service enhances the functions of the mobile terminal, so that the consumption behavior of the user gradually becomes electronization, and a novel user consumption and service mode is established.
NFC conformance tests are used to determine whether an NFC device or device meets specification requirements, performed at various stages of the development cycle. The traditional NFC testing equipment is complex in matching design, large in testing error, high in cost, easy to damage and difficult to maintain.
Disclosure of Invention
The invention aims to provide NFC single-body testing equipment to solve the problems of how to realize decoupling of patch antennas and realize better isolation between closely-arranged patch antennas.
In order to solve the above problems, the present invention provides an NFC monolithic test device, which includes a coupling unit, an antenna unit, a matching unit, a test fixture, and a network analyzer; the coupling unit is connected with the network analyzer; the antenna unit is connected with the matching unit; the coupling unit comprises a coupling coil, a place connecting point and a feed connecting point; the antenna unit comprises an antenna coil, a first test point and a second test point; the matching unit comprises a matching PCB, a matching circuit, a third test point and a fourth test point; the test fixture sequentially comprises a placing table, a fixture lower die and a fixture upper die; the antenna unit is positioned on one surface of the placing table, which faces the lower jig die; the coupling unit is positioned on one surface of the lower jig die, which faces the upper jig die; the matching unit is positioned on one surface of the jig upper die facing the jig lower die.
Optionally, in the NFC monolithic test device, the site connection point and the feed connection point are connected to the network analyzer through an SMA interface and a Cable.
Optionally, in the NFC monolithic test device, the first test point, the second test point, the third test point, and the fourth test point correspond in position.
Optionally, in the NFC monolithic test device, the matching circuit is a circuit formed by connecting at least 1 capacitor in series.
Optionally, the NFC unit testing device further includes a base, and the jig lower die and the placing table are fixed to the base.
Optionally, in the NFC monolithic test device, the NFC monolithic test device further includes a bracket, and the bracket is perpendicularly fixed to the base.
Optionally, the NFC unit test device further includes a slide rail, and the jig upper die is fixed to the support through the slide rail and can move up and down along the support.
Optionally, in the NFC monolithic testing device, a metal probe is further included, and the metal probe is vertically fixed on the placing table.
Optionally, in the NFC monolithic test device, the test device includes more than 2 metal probes.
Optionally, in the NFC monolithic test device, the metal probe corresponds to the third test point and the fourth test point.
The invention provides NFC single body test equipment which is characterized by comprising a coupling unit, an antenna unit, a matching unit, a test fixture and a network analyzer; the coupling unit is connected with the network analyzer; the antenna unit is connected with the matching unit; the coupling unit comprises a coupling coil, a place connecting point and a feed connecting point; the antenna unit comprises an antenna coil, a first test point and a second test point; the matching unit comprises a matching PCB, a matching circuit, a third test point and a fourth test point; the test fixture comprises a placing table, a fixture upper die and a fixture lower die; the antenna unit is positioned on the upper surface of the placing table; the matching unit is positioned on the lower surface of the upper die of the jig; the coupling unit is positioned on the upper surface of the lower jig die; the upper jig die is connected with the bracket of the test jig through a slide rail and moves up and down; when the upper die of the jig is pressed down, the antenna coil and the matching unit form coupling, and current can form a magnetic field of a closed loop in a direction perpendicular to a current loop, so that one-time test is completed, the test error is small, the cost is low, the speed is high, the matching network is simple in design and easy to maintain.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural diagram of a test fixture for an NFC monolithic test device according to this embodiment;
fig. 2 is a structural diagram of a coupling unit of an NFC monolithic test device according to this embodiment;
fig. 3 is a structural diagram of an antenna unit of an NFC monolithic test device according to this embodiment;
fig. 4 is a structural diagram of a matching unit of an NFC monolithic test device according to this embodiment;
fig. 5 is an equivalent diagram of the matching circuit of the patch matching unit provided in this embodiment;
wherein the reference numerals are as follows:
100-a coupling unit; 101-a coupling coil; 102-site connection points; 103-a feed connection point; 200-an antenna element; 201-an antenna coil; 202-a first test point; 203-a second test point; 300-a matching unit; 301-matching the PCB board; 302-a matching circuit; 303-a third test point; 304-a fourth test point; 400-testing the fixture; 401-placing a table; 402-a jig lower die; 403-forming an upper jig die; 404-a base; 405-a scaffold; 406-slide rail.
Detailed Description
The following describes an NFC monolithic test device according to the present invention in further detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, and it is to be understood that such structures as are used are interchangeable where appropriate. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment provides an NFC monolithic test device, which includes a coupling unit 100, an antenna unit 200, a matching unit 300, a test fixture 400, and a network analyzer; the coupling unit 100 comprises a coupling coil 101, a place connecting point 102 and a feed connecting point 103; the antenna unit 200 comprises an antenna coil 201, a first test point 202 and a second test point 203; the matching unit 300 comprises a matching PCB board 301, a matching circuit 302, a third test point 303 and a fourth test point 304; the test fixture 400 includes a placing table 401, a fixture lower mold 402, a fixture upper mold 403, a base 404, a bracket 405, and a slide rail 406.
Fig. 1 is a structural diagram of a test fixture for an NFC monolithic test device according to the patch of this embodiment, as shown in fig. 1, the placing table 401 and the fixture lower mold 402 are fixed on the base 404, and the fixture upper mold 403 is fixed on the slide rail 406; the antenna unit 200 is located on one surface of the placing table facing the jig lower die 402; the coupling unit 100 is located on one surface of the lower jig die 402 facing the upper jig die 403; the matching unit 300 is located on one surface of the upper jig die facing the lower jig die 402; the antenna unit 200 can be mounted on the jig upper die 403 by means of fitting, fastening point clamping or embedding, so as to be convenient for repeated disassembly and assembly; the slide rail 406 is fixed on the bracket 405; the jig upper die 403 can move up and down along the bracket 405 by the slide rail 406.
Further, the mode of controlling the upper jig die 403 to move up and down may be manual; or an electromagnetic valve and an air cylinder are arranged on the inner side of the bracket 405 and connected with the jig upper die 403, and the air cylinder is controlled by a switch or a PLC to move up and down through a slide rail; or a motor can be added, a vertical thread structure is arranged on the inner side of the slide rail 406 and connected with the jig upper die 403, the motor is connected with the vertical thread structure, and the motor is controlled to rotate by a switch and a PLC (programmable logic controller), so that the vertical thread structure drives the jig to control the jig upper die 403 to move up and down.
Fig. 2 is a structural diagram of a coupling unit of an NFC monolithic test device of the patch according to this embodiment, where the coupling unit 100 is connected to the network analyzer through the location connection point 102 and the feeding connection point 103; the concrete connection mode is as follows: the site connection point 102 and the feed connection point 103 are connected with the SMA interface, and then are connected with the network analyzer through the Cable.
Fig. 3 is a structural diagram of an antenna unit of an NFC monolithic test device of the patch according to this embodiment, where the antenna unit 200 includes the antenna coil 201, the first test point 202, and the second test point 203.
Fig. 4 is a structural diagram of a matching unit of an NFC monolithic test device according to this embodiment, where the matching unit 300 includes a matching PCB 301, a matching circuit 302, a third test point 303, and a fourth test point 304; the traditional NFC antenna test fixture usually needs to weld a new matching circuit on a PCB to test the consistency of the NFC antenna, but the welded PCB cannot be reused, and only another PCB can be found to weld other matching circuits, so that the cost is high; in this embodiment, the soldering position of the matching circuit 302 may be reused, and the 13.56Mhz required by the NFC test may be debugged only by connecting a capacitor in series in the middle of the matching circuit 302, so that a complex matching implementation is not required, and the use cost during the test may be reduced.
Fig. 5 is an equivalent diagram of the patch matching unit matching circuit provided in this embodiment, and the specific number of capacitors connected in series needs to be selected according to actual debugging, and in combination with fig. 4, the capacitors connected in series are connected to the overall coupling test circuit through the third test point 303 and the fourth test point 304, and it is not necessary to distinguish between a feed point and a ground feed point, so that the test is simple and easy to maintain.
The specific test method of the NFC monolithic test device provided in this embodiment is as follows:
placing the coupling unit 100 on the upper surface of the jig lower mold 402, placing the antenna unit 200 on the upper surface of the placing table 401, debugging the matching element of the matching circuit 302 to resonate to 13.56Mhz required by the NFC test, and placing the matching unit on the lower surface of the jig upper mold 403; it should be noted that, limiting devices are respectively disposed at corresponding positions on the lower jig 402, the placing table 401, and the upper jig 403 to ensure that the site connection point 102 and the feed connection point 103 can be connected to an SMA interface, and the positions of the first test point 202, the second test point 203, the third test point 303, and the fourth test point 304 correspond to each other and can be connected together through a metal probe;
the jig upper die 403 is controlled to press downwards, and the coupling condition and the result of the network analyzer are observed. When the jig upper die 403 is pressed downwards, the first test point 202, the second test point 203, the third test point 303 and the fourth test point 304 are connected together through a metal probe, the matching unit 300 is coupled with the antenna unit 200, current is in a direction perpendicular to a current loop, a magnetic field of a closed loop is formed, and the network analyzer can display a resonance result because the point connection point 102, the feed connection point 103 and the SMA interface are connected together and then connected together through the Cable and the network analyzer. The communication principle of NFC is used as a test method to test the NFC single antenna, one-time test can be completed through one-time simple action of pressing down the jig upper die 403, and the consistency of the conductivity of the ferrite and the consistency of the antenna coil can be accurately and effectively tested.
When different NFC antennas need to be tested, the tested antennas on the lower jig mould 402 only need to be taken down, and the antennas are very convenient to mount and take down due to the adoption of an active connection mode; and then installing a new NFC antenna to be tested, and then clearing welding spots of the antenna which is tested in the front.
It should be noted that the test fixture of the present invention has no requirement on the coil size of the NFC antenna to be tested, and different coil sizes do not affect the test process and the accuracy of the result. Before testing, the test point of the coil to be tested needs to be adjusted to match the position of the metal probe.
In summary, the present embodiment provides an NFC monolithic test device, which is characterized by including a coupling unit, an antenna unit, a matching unit, a test fixture, and a network analyzer; the coupling unit is connected with the network analyzer; the antenna unit is connected with the matching unit; the coupling unit comprises a coupling coil, a place connecting point and a feed connecting point; the antenna unit comprises an antenna coil, a first test point and a second test point; the matching unit comprises a matching PCB, a matching circuit, a third test point and a fourth test point; the test fixture comprises a placing table, a fixture upper die and a fixture lower die; the antenna unit is positioned on the upper surface of the placing table; the matching unit is positioned on the lower surface of the upper die of the jig; the coupling unit is positioned on the upper surface of the lower jig die; the upper jig die is connected with the bracket of the test jig through a slide rail and moves up and down; when the upper die of the jig is pressed down, the antenna coil and the matching unit form coupling, and the current can form a magnetic field of a closed loop in the direction perpendicular to a current loop, so that one-time testing is completed, the testing error is small, the cost is low, the speed is high, and the matching network is simple in design and easy to maintain.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The NFC single-body testing device is characterized by comprising a coupling unit, an antenna unit, a matching unit, a testing jig and a network analyzer; the coupling unit is connected with the network analyzer; the antenna unit is connected with the matching unit; the coupling unit comprises a coupling coil, a place connecting point and a feed connecting point; the antenna unit comprises an antenna coil, a first test point and a second test point; the matching unit comprises a matching PCB, a matching circuit, a third test point and a fourth test point; the test fixture sequentially comprises a placing table, a fixture lower die and a fixture upper die; the antenna unit is positioned on one surface of the placing table, which faces the lower jig die; the coupling unit is positioned on one surface of the lower jig die, which faces the upper jig die; the matching unit is positioned on one surface of the jig upper die facing the jig lower die.
2. The NFC monomer test device of claim 1, wherein the site connection point and the feed connection point are connected to the network analyzer through an SMA interface and a Cable.
3. An NFC monolithic test device according to claim 1, wherein the first test point, the second test point and the third test point and the fourth test point correspond in location.
4. The NFC cell testing device of claim 1, wherein the matching circuit is a circuit formed by at least 1 capacitor connected in series.
5. The NFC monomer test equipment of claim 1, further comprising a base, wherein the jig lower die and the placing table are fixed on the base.
6. The NFC monomer test device of claim 1, further comprising a bracket, wherein the bracket is vertically fixed to the base.
7. The NFC monomer test equipment of claim 1, further comprising a slide rail, wherein the jig upper die is fixed on the support through the slide rail and can move up and down along the support.
8. The NFC cell testing device of claim 1, further comprising metal probes, the metal probes being perpendicularly fixed to the placement table.
9. The NFC cell testing device of claim 8, wherein the testing device includes more than 2 of the metal probes.
10. The NFC monomer test device of claim 1, wherein the metal probes correspond to the third test point and the fourth test point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210441108.9A CN114884587A (en) | 2022-04-25 | 2022-04-25 | NFC monomer test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210441108.9A CN114884587A (en) | 2022-04-25 | 2022-04-25 | NFC monomer test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN114884587A true CN114884587A (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210441108.9A Pending CN114884587A (en) | 2022-04-25 | 2022-04-25 | NFC monomer test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115580322A (en) * | 2022-11-18 | 2023-01-06 | 北京紫光青藤微系统有限公司 | Method and apparatus for detecting failure, near field communication apparatus, and storage medium |
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| US20190348760A1 (en) * | 2018-05-09 | 2019-11-14 | Keysight Technologies, Inc. | System and method for near field test of active antenna system (aas)transceiver |
| CN112611920A (en) * | 2020-12-03 | 2021-04-06 | 深圳市卓睿通信技术有限公司 | Ferrite consistency detection jig and detection method |
| CN215986267U (en) * | 2021-08-23 | 2022-03-08 | 深圳市海德门电子有限公司 | NFC antenna testing device and electronic equipment |
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2022
- 2022-04-25 CN CN202210441108.9A patent/CN114884587A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140098846A1 (en) * | 2012-10-08 | 2014-04-10 | Netgear, Inc. | Near-field mimo wireless test systems, structures, and processes |
| CN205212845U (en) * | 2015-12-18 | 2016-05-04 | 上海安费诺永亿通讯电子有限公司 | NFC antenna testing arrangement |
| CN207908591U (en) * | 2018-01-02 | 2018-09-25 | 深圳市信维通信股份有限公司 | A kind of antenna measurement jig |
| US20190348760A1 (en) * | 2018-05-09 | 2019-11-14 | Keysight Technologies, Inc. | System and method for near field test of active antenna system (aas)transceiver |
| CN112611920A (en) * | 2020-12-03 | 2021-04-06 | 深圳市卓睿通信技术有限公司 | Ferrite consistency detection jig and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115580322A (en) * | 2022-11-18 | 2023-01-06 | 北京紫光青藤微系统有限公司 | Method and apparatus for detecting failure, near field communication apparatus, and storage medium |
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Country or region after: China Address after: 215300 Room 009, No. 55, Shengchuang Road, Yushan Town, Kunshan, Suzhou, Jiangsu Province Applicant after: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 215300 no.1689-5 Zizhu Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Applicant before: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Country or region before: China |