CN211603354U - Near field communication antenna detection tool and near field communication antenna detecting system - Google Patents
Near field communication antenna detection tool and near field communication antenna detecting system Download PDFInfo
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- CN211603354U CN211603354U CN201922014311.4U CN201922014311U CN211603354U CN 211603354 U CN211603354 U CN 211603354U CN 201922014311 U CN201922014311 U CN 201922014311U CN 211603354 U CN211603354 U CN 211603354U
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Abstract
The utility model provides a near field communication antenna detection tool and detecting system, near field communication antenna detection tool includes the base plate, locate the resonance antenna on the base plate, resonance antenna is the annular, and have regional and the radio frequency access mouth that is used for placing the antenna that awaits measuring, resonance antenna includes main antenna section, connect in a plurality of regulating wires at main antenna section both ends and be used for switching on the zero ohm resistance of regulating wire, each regulating wire parallel arrangement just is open circuit, zero ohm resistance locates the department that opens circuit of one of them regulating wire, in order to switch on this regulating wire. The utility model provides a near field communication antenna detection tool and detecting system, zero ohm resistance sets up when the regulation line of difference is gone up, can switch on corresponding regulation line to adjust resonant antenna's size, take place the resonance with the antenna phase-match that awaits measuring of equidimension not. When the resonant antenna and the antenna to be detected resonate, the resonant frequency of the antenna to be detected can be detected by detecting the frequency emitted by the resonant antenna.
Description
Technical Field
The utility model belongs to the technical field of the antenna, more specifically say, relate to a near field communication antenna detection tool and near field communication antenna detecting system.
Background
With the determination of the near field payment standard, many high-end smart products start to configure the Near Field (NFC) payment function. Products with NFC payment functionality require an NFC chip and an NFC antenna. The NFC antenna is a near field coupling antenna, and the principle of implementing near field communication is in the form of magnetic coupling, that is, in the form of coil coupling. As NFC products become more and more popular, the detection mode of the NFC antenna becomes more and more important.
At present, in a production process, a detection method for an NFC antenna generally analyzes parameters such as the frequency of the antenna by using an LCR tester or a Network Analyzer (Network Analyzer) in a manner of direct feed of a thimble/spring plate. Through the mode of directly feeding the thimble/elastic sheet, traces can be left on the antenna, even the antenna is damaged; by means of the network analyzer, the test jigs or tools may be different due to different shapes of the antennas, and the jigs are required to be specific according to specific antenna systems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a near field communication antenna detection tool to the NFC antenna who exists among the solution prior art detects the technical problem who needs the tool of different shapes.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a near field communication antenna detection tool, includes the base plate, locates resonant antenna on the base plate, resonant antenna is the annular, and has the radio frequency that is used for placing the antenna that awaits measuring regional and is used for connecting the network analysis appearance and inserts the mouth, resonant antenna includes main antenna section, connect in a plurality of regulating wires at main antenna section both ends and be used for switching on the zero ohm resistance of regulating wire, each regulating wire parallel arrangement just is circuit break, one of them is located to zero ohm resistance the department that opens circuit of regulating wire to switch on this regulating wire.
Furthermore, the main antenna section is U-shaped, and each adjusting line is arranged at an opening of the main antenna section.
Further, the radio frequency access port is provided with at least one positive electrode access point and one negative electrode access point.
Further, the number of the negative electrode access points is four and the negative electrode access points are connected with each other, and each of the negative electrode access points is arranged around the positive electrode access point.
Furthermore, a positioning hole for positioning is formed in the substrate.
Furthermore, the number of the positioning holes is four, and the positioning holes are respectively arranged at four corners of the substrate.
The utility model also provides a near field communication antenna detecting system, including foretell near field communication antenna detection tool, still include network analyzer and radio frequency connecting wire, the both ends of radio frequency connecting wire connect respectively in network analyzer with near field communication antenna detection tool's radio frequency inserts the mouth.
The utility model provides a near field communication antenna detection tool and near field communication antenna detecting system's beneficial effect lies in: compared with the prior art, the utility model discloses near field communication antenna detection tool includes base plate and resonant antenna, and resonant antenna includes main antenna section, a plurality of regulating wire and zero ohm resistance. The adjusting line is connected with the main antenna section to enable the resonant antenna to form a ring, the adjusting lines are all open circuits, and the zero ohm resistors are arranged at the open circuits of the adjusting lines to enable the adjusting lines to be conducted. Therefore, when the zero ohm resistors are arranged on different adjusting lines, the corresponding adjusting lines can be conducted, so that the size of the resonant antenna is adjusted, and the resonant antenna is matched with antennas to be measured in different sizes to generate resonance. When the resonant antenna and the antenna to be detected resonate, the resonant frequency of the antenna to be detected can be detected by detecting the frequency emitted by the resonant antenna. This near field communication antenna detection tool matches the antenna that awaits measuring of equidimension not through adjusting the position of zero ohm resistance, need not design multiple detection tool according to the antenna that awaits measuring, improves the suitability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be 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 without inventive labor.
Fig. 1 is a schematic structural diagram of a near field communication antenna detection fixture according to an embodiment of the present invention;
fig. 2 is a working schematic diagram of the near field communication antenna detection jig provided in the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a near field communication antenna detection system according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
010-an antenna to be tested; 1-near field communication antenna detection tool; 11-a substrate; 110-positioning holes; 12-a resonant antenna; 121-a primary antenna segment; 122-adjustment line; 123-zero ohm resistance; 13-a radio frequency access port; 131-positive access point; 132-negative access point; 2-radio frequency connection line; 3-network analyzer.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and fig. 2, the near field communication antenna detection tool 1 of the present invention is now described, and the near field communication antenna detection tool 1 is used for detecting parameters such as resonant frequency of the near field communication antenna.
In one embodiment, the near field communication antenna detection fixture 1 includes a substrate 11 and a resonant antenna 12, the resonant antenna 12 is disposed on the substrate 11, and the substrate 11 is disposed to facilitate routing of the resonant antenna 12 and is a carrier of the resonant antenna 12. The resonant antenna 12 is in a loop shape, and after the resonant antenna 12 is fed, a loop current and a magnetic field perpendicular to the resonant antenna 12 are formed to communicate with an external device. The resonant antenna 12 comprises a main antenna segment 121, a plurality of adjusting lines 122 and a zero ohm resistor 123, the adjusting lines 122 are open-circuit, the adjusting lines 122 are arranged in parallel and are connected to two ends of the main antenna segment 121, and when the main antenna segment 121 and different adjusting lines 122 form a loop, the size of the formed resonant antenna 12 is different. Therefore, the zero ohm resistor 123 is adjusted to enable the zero ohm resistor 123 to conduct different adjusting lines 122, and therefore the size of the resonant antenna 12 can be adjusted to be matched with different antennas 010 to be tested. When the resonant antenna 12 is matched with the capacitance and inductance of the antenna 010 to be detected, resonance is easy to occur, so that the resonant frequency is detected. The resonance antenna 12 has a region for placing the antenna 010 to be tested, and the antenna 010 to be tested is placed on the substrate 11 for detection. The resonant antenna 12 further has a radio frequency access port 13 for accessing the network analyzer 3 to detect the resonant frequency of the resonant antenna 12, so as to obtain the resonant frequency of the antenna 010 to be detected.
The detection principle of the near field communication antenna detection jig 1 is a resonance induction coupling principle. When the antenna 010 to be measured is close to the resonant antenna 12, as shown in fig. 2, the antenna 010 to be measured and the resonant antenna 12 will generate near-field resonance induction coupling, the antenna 010 to be measured and the resonant antenna 12 will generate frequency resonance, the resonant antenna 12 is a primary coil, and the antenna 010 to be measured is a secondary coil. When the secondary coil is viewed from the primary coil, the secondary coil can be equivalent to a resonant circuit consisting of a short-circuit inductor L and a resonant capacitor C, and the resonant frequency f is 1/(2 pi √ (CL)). The short-circuit inductance L and the resonant capacitance C of each antenna are fixed, so the resonant frequency f of each antenna is fixed, and if the area of the antenna 010 to be measured is increased (the length is increased), L is increased or the resonant capacitance C is increased, and the frequency f is reduced. Then, as the antenna 010 to be measured and the resonant antenna 12 are subjected to field resonance inductive coupling, and the frequencies of the antenna 010 to be measured and the resonant antenna 12 are equal (resonant), the resonant frequency of the antenna 010 to be measured can be obtained by directly measuring the frequency of the resonant antenna 12 at the moment. Finally, the frequency f is dynamically displayed on the screen by the network analyzer 3 for the user to read.
The near field communication antenna detection fixture 1 in the above embodiment includes a substrate 11 and a resonant antenna 12, where the resonant antenna 12 includes a main antenna segment 121, a plurality of adjusting lines 122, and a zero ohm resistor 123. The adjustment line 122 is connected to the main antenna segment 121 to form a loop of the resonant antenna 12, the adjustment lines 122 are all open-circuited, and the zero ohm resistor 123 is disposed at the open-circuited portion of the adjustment line 122 to turn on the adjustment line 122. Therefore, when the zero ohm resistors 123 are arranged on different adjusting lines 122, the corresponding adjusting lines 122 can be conducted, so that the size of the resonant antenna 12 is adjusted, and the resonant antenna is matched with the antennas 010 to be tested with different sizes to generate resonance. When the resonant antenna 12 resonates with the antenna 010 to be measured, the resonant frequency of the antenna 010 to be measured can be detected by detecting the frequency emitted from the resonant antenna 12. This near field communication antenna detection tool 1 matches the antenna 010 that awaits measuring of equidimension not through adjusting the position of zero ohm resistance 123, need not design multiple detection tool according to the antenna 010 that awaits measuring, improves the suitability.
Referring to fig. 1, in one embodiment of the near field communication antenna detection fixture 1, the main antenna segment 121 is U-shaped, each of the adjusting lines 122 is disposed at the opening of the main antenna segment 121, and since each of the adjusting lines 122 is disposed in parallel, the size of the resonant antenna 12 formed by the adjusting line 122 and the main antenna segment 121 closer to the opening side is larger, and the size of the resonant antenna 12 formed by the adjusting line 122 and the main antenna segment 121 closer to the U-shaped bottom of the main antenna segment 121 is smaller. Therefore, the size of the resonant antenna 12 can be changed by only changing which of the adjusting lines 122 is connected, and the operation is simple.
Referring to fig. 1, in one embodiment of the near field communication antenna detection fixture 1, the rf access 13 at least has a positive access point 131 and a negative access point 132, the positive access point 131 is used for connecting with a positive electrode (power feed) of the network analyzer 3, and the negative access point is used for connecting with a negative electrode (ground) of the network analyzer 3.
Furthermore, the number and distribution of the negative access points 132 are not limited, and when there are a plurality of negative access points 132, the connection is more stable. For example, the negative electrode access points 132 are four in number and connected to each other, and each negative electrode access point 132 is disposed around the positive electrode access point 131.
Referring to fig. 1, as a specific embodiment of the near field communication antenna detection tool 1 of the present invention, a positioning hole 110 is formed on the substrate 11, so as to facilitate fixing of the substrate 11 itself. Specifically, the substrate 11 is fixedly mounted at a set position by using a connector such as a screw or a bolt to pass through the positioning hole 110.
Further, the number and distribution of the positioning holes 110 are not limited herein. For example, the number of the positioning holes 110 is four, and the positioning holes are respectively arranged at four corners of the substrate 11, so that the fixed connection of the substrate 11 is more stable.
Referring to fig. 3, the present invention further provides a near field communication antenna detection system, which includes the near field communication antenna detection fixture 1 in any of the above embodiments, and further includes a network analyzer 3 and a radio frequency connection line 2, wherein two ends of the radio frequency connection line 2 are respectively connected to the radio frequency access ports 13 of the network analyzer 3 and the near field communication antenna detection fixture 1.
The utility model provides a near field communication antenna detecting system has adopted near field communication antenna detection tool 1, and near field communication antenna detection tool 1 includes base plate 11 and resonant antenna 12, and resonant antenna 12 includes main antenna section 121, a plurality of regulating wire 122 and zero ohm resistance 123. The adjustment line 122 is connected to the main antenna segment 121 to form a loop of the resonant antenna 12, the adjustment lines 122 are all open-circuited, and the zero ohm resistor 123 is disposed at the open-circuited portion of the adjustment line 122 to turn on the adjustment line 122. Therefore, when the zero ohm resistors 123 are arranged on different adjusting lines 122, the corresponding adjusting lines 122 can be conducted, so that the size of the resonant antenna 12 is adjusted, and the resonant antenna is matched with the antennas 010 to be tested with different sizes to generate resonance. When the resonant antenna 12 resonates with the antenna 010 to be measured, the resonant frequency of the antenna 010 to be measured can be detected by detecting the frequency emitted from the resonant antenna 12. The near field communication antenna detection system matches the antennas 010 to be detected with different sizes by adjusting the position of the zero ohm resistor 123, and various detection jigs do not need to be designed according to the antennas 010 to be detected, so that the applicability is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. Near field communication antenna detection tool, its characterized in that: including the base plate, locate resonance antenna on the base plate, resonance antenna is the annular, and has the radio frequency that is used for placing the antenna that awaits measuring regional and is used for connecting the network analysis appearance and inserts the mouth, resonance antenna include main antenna section, connect in a plurality of regulating wires at main antenna section both ends and be used for switching on the zero ohm resistance of regulating wire, each regulating wire parallel arrangement just is open circuit, one of them is located to zero ohm resistance the department that opens circuit of regulating wire to switch on this regulating wire.
2. The near field communication antenna inspection jig of claim 1, wherein: the main antenna section is U-shaped, and each adjusting wire is arranged at an opening of the main antenna section.
3. The near field communication antenna inspection jig of claim 1, wherein: the radio frequency access port is provided with at least one positive pole access point and one negative pole access point.
4. The near field communication antenna inspection jig of claim 3, wherein: the number of the negative electrode access points is four and the negative electrode access points are connected with each other, and each negative electrode access point is arranged around the positive electrode access point.
5. The near field communication antenna inspection jig of claim 1, wherein: the base plate is provided with a positioning hole for positioning.
6. The near field communication antenna inspection jig of claim 5, wherein: the number of the positioning holes is four, and the positioning holes are respectively arranged at four corners of the substrate.
7. Near field communication antenna detecting system, its characterized in that: the near field communication antenna detection jig comprises the near field communication antenna detection jig of any one of claims 1 to 6, and further comprises a network analyzer and a radio frequency connecting wire, wherein two ends of the radio frequency connecting wire are respectively connected to radio frequency access ports of the network analyzer and the near field communication antenna detection jig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922014311.4U CN211603354U (en) | 2019-11-20 | 2019-11-20 | Near field communication antenna detection tool and near field communication antenna detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922014311.4U CN211603354U (en) | 2019-11-20 | 2019-11-20 | Near field communication antenna detection tool and near field communication antenna detecting system |
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| CN211603354U true CN211603354U (en) | 2020-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Effective date of registration: 20201020 Address after: 215300 floor 3, new generation communication technology industrial park, room 5, No. 1689, Zizhu Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: KUNSHAN YIQU INFORMATION TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 215300 room 10, plant no.1689-5, Zizhu Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Kunshanyuanboxun Communication Technology Co.,Ltd. Patentee before: KUNSHAN YIQU INFORMATION TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |