CN219643911U - Near field communication circuit structure and electronic equipment - Google Patents
Near field communication circuit structure and electronic equipment Download PDFInfo
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- CN219643911U CN219643911U CN202320512218.XU CN202320512218U CN219643911U CN 219643911 U CN219643911 U CN 219643911U CN 202320512218 U CN202320512218 U CN 202320512218U CN 219643911 U CN219643911 U CN 219643911U
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- 238000004891 communication Methods 0.000 title claims abstract description 112
- 230000000903 blocking effect Effects 0.000 claims abstract description 36
- 239000003990 capacitor Substances 0.000 claims abstract description 35
- 230000005291 magnetic effect Effects 0.000 claims description 10
- 230000001052 transient effect Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 5
- 239000011324 bead Substances 0.000 abstract description 23
- 238000010295 mobile communication Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000000670 limiting effect Effects 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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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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Abstract
The utility model provides a near field communication circuit structure and electronic equipment, which relate to the technical field of mobile communication and comprise a near field communication module, a lamp strip module, a shared annular line and a blocking capacitor, wherein the shared annular line comprises an anode signal line and a cathode signal line of a flat travelling line, the anode signal line and the cathode signal line are annular, the lamp strip module comprises a lamp strip driving circuit and a lamp bead, the lamp strip driving circuit is connected with the anode signal line and the cathode signal line, the lamp bead is connected between the anode signal line and the cathode signal line, the near field communication module is connected with the anode signal line and the cathode signal line, and the anode signal line and the cathode signal line are connected in series through the blocking capacitor. Through lamp area module and near field communication module sharing positive pole signal line and negative pole signal line, keep apart alternating current signal and direct current signal through blocking electric capacity for near field communication module need not additionally to set up near field communication loop antenna, can realize the compactification of circuit, practices thrift mobile communication equipment's inner space, has practiced thrift equipment cost simultaneously.
Description
Technical Field
The present utility model relates to the field of mobile communications technologies, and in particular, to a near field communication circuit structure and an electronic device.
Background
The near field communication scheme is a communication mode realized by using electromagnetic coupling in a short distance, and in the current mobile communication device, the scheme for realizing near field communication is as follows: when transmitting signals, the near field communication control chip (NFCC, near Field Communication Controller) converts information to be transmitted into modulated signals, the modulated signals are transmitted to the near field communication annular antenna after being converted by the matching circuit, and the near field communication annular antenna converts the modulated signals into a time-varying magnetic field; when receiving external signals, the near field communication loop antenna converts external time-varying magnetic fields into received signals, the received signals are transmitted to the near field communication control chip after being converted by the matching circuit, and the near field communication control chip demodulates the received signals to restore modulation signals in the received signals.
In a mobile communication device, a lamp belt is sometimes required to be added to realize special functions, such as message reminding, and the lamp belt is a strip-shaped light emitting array formed by connecting a plurality of light-emitting diodes (LEDs) in series or in parallel, and the implementation scheme of the lamp belt is as follows: the direct current voltage difference generated by the positive electrode (+) and the negative electrode (-) is controlled by the driving power supply, and when the direct current voltage at two ends exceeds the conducting voltage, the LED can convert electric energy into light energy, and the LED can emit light to realize the lighting of the LED.
In the existing mobile communication device, if the near field communication scheme and the lamp band are to be used simultaneously, the space reserved for the near field communication antenna is reduced due to the fact that the lamp band occupies the space of the communication device, and the performance of the communication antenna is greatly reduced. The current separation of the near field communication loop antenna from the lamp band circuit is disadvantageous for miniaturization of the mobile communication device and for compactness of the internal electronic circuits.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a near field communication circuit structure and electronic equipment.
The utility model provides a near field communication circuit structure which comprises a near field communication module, a lamp strip module, a shared annular circuit and a blocking capacitor, wherein the shared annular circuit comprises an anode signal wire and a cathode signal wire of a flat travelling wire, the anode signal wire and the cathode signal wire are annular, the lamp strip module comprises a lamp strip driving circuit and a plurality of lamp beads, the lamp strip driving circuit is connected with the anode signal wire and the cathode signal wire, the lamp beads are respectively connected between the anode signal wire and the cathode signal wire, the near field communication module is connected with the anode signal wire and the cathode signal wire, and the anode signal wire and the cathode signal wire are connected in series through the blocking capacitor.
In one possible embodiment, one end of the positive electrode signal line is connected to the positive electrode output end of the lamp strip driving circuit, and one end of the negative electrode signal line is connected to the negative electrode output end of the lamp strip driving circuit.
In one possible implementation manner, one end of the blocking capacitor is connected with one end of the positive electrode signal wire, which is far away from the positive electrode output end, the other end of the blocking capacitor is connected with one end of the negative electrode signal wire, which is far away from the negative electrode output end, and the near field communication module is respectively connected with one end of the positive electrode signal wire, which is close to the positive electrode output end, and one end of the negative electrode signal wire, which is close to the negative electrode output end, through two differential signal wires.
In one possible implementation manner, one end of the blocking capacitor is connected with one end of the positive electrode signal wire, which is close to the positive electrode output end, and the other end of the blocking capacitor is connected with one end of the negative electrode signal wire, which is close to the negative electrode output end; the near field communication module is respectively connected to one end, far away from the positive electrode output end, of the positive electrode signal wire and one end, far away from the negative electrode output end, of the negative electrode signal wire through two differential signal wires.
In one possible implementation manner, the near field communication module includes a near field communication control chip, a matching circuit, two first differential signal lines and two second differential signal lines, the near field communication control chip is connected with the matching circuit through the first differential signal lines, and the matching circuit is connected with the positive electrode signal line and the negative electrode signal line through one second differential signal line respectively.
In a possible implementation manner, the near field communication circuit structure further comprises two transient diodes, and the two transient diodes are respectively connected in parallel to the two second differential signal lines.
In one possible embodiment, the positive signal line, the negative signal line and the blocking capacitor are connected in series to form a double turn coil.
In one possible implementation, the positive signal line and the negative signal line are metal traces on an FPC.
In one possible implementation manner, a magnetic protection layer is further arranged below the positive electrode signal line and the negative electrode signal line.
An electronic device comprises the near field communication circuit structure.
Compared with the prior art, the utility model has the beneficial effects that:
according to the near field communication circuit structure and the electronic equipment, the lamp band module and the near field communication module share the positive electrode signal wire and the negative electrode signal wire of the common annular line, and the alternating current signal and the direct current signal are isolated through the blocking capacitor, and the near field communication module uses the positive electrode signal wire, the negative electrode signal wire and the blocking capacitor as the near field communication annular antenna, so that the near field communication module does not need to be additionally provided with the near field communication annular antenna, the circuit can be compact, the internal space of the mobile communication equipment is saved, and meanwhile, the equipment cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a near field communication circuit structure according to a first embodiment of the present utility model;
fig. 2 shows a schematic diagram of the near field communication circuit structure shown in fig. 1 when implementing near field communication functions;
fig. 3 is a schematic structural diagram of another near field communication circuit structure according to a first embodiment of the present utility model;
fig. 4 is a schematic structural diagram of a near field communication circuit structure according to a second embodiment of the present utility model;
fig. 5 shows a schematic diagram of a common ring line arrangement.
Description of main reference numerals:
100-a near field communication circuit structure; 10-a near field communication module; 11-a near field communication control chip; 12-a matching circuit; 13-differential signal lines; 131-a first differential signal line; 132-a second differential signal line; 20-a lamp strip module; 21-a lamp strip driving circuit; 211-positive output; 212-a negative output; 22-lamp beads; 30-a common ring line; 31-positive signal line; 32-negative signal line; 33-a magnetic protective layer; 40-blocking capacitance; 50-protecting the module; 51-transient diode.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Example 1
Referring to fig. 1, an embodiment of the present utility model provides a near field communication circuit structure 100. The near field communication circuit structure 100 is applied to electronic equipment, such as mobile communication devices including mobile phones, smart watches and the like. The near field communication circuit structure 100 can realize near field communication and lamp band functions, and enables the near field communication loop antenna and the lamp band to share a circuit, thereby realizing the compactness of the circuit and being beneficial to the miniaturization and the performance improvement of the mobile communication device.
The near field communication circuit structure 100 includes a near field communication module 10, a lamp band module 20, a common ring line 30, and a blocking capacitor 40. The near field communication module 10 and the blocking capacitor 40 are respectively connected to two ends of the common loop line 30. The blocking capacitor 40 forms a loop antenna with the common loop line 30. The near field communication module 10 may be configured to transmit and receive signals to and from the loop antenna. The lamp strip modules 20 are connected to the common ring line 30, and the lamp strip modules 20 can emit light on the common ring line 30.
Specifically, the near field communication module 10 includes a near field communication control chip 11, a matching circuit 12, and a differential signal line 13. The near field communication control chip 11 is connected with the matching circuit 12 through the differential signal line 13. The matching circuit 12 is connected to the common ring line 30 through the differential signal line 13.
The near field communication control chip 11 can convert signals into modulation signals and transmit the modulation signals to the loop antenna for transmission through the matching circuit 12; the near field communication control chip 11 may also perform demodulation processing on the modulated signal received by the loop antenna.
The matching circuit 12 is composed of a plurality of capacitance, inductance and impedance converters, and is used for matching the near field communication control chip 11 with the loop antenna impedance to realize the maximum power transmission from the source end to the load.
The differential signal lines 13 may be metal traces on a printed circuit board (PCB, printed Circuit Board) or other substrate.
The differential signal line 13 includes a first differential signal line 131 and a second differential signal line 132. The near field communication control chip 11 and the matching circuit 12 are connected through the first differential signal line 131. The matching circuit 12 is connected to the common ring line 30 via the second differential signal line 132.
Specifically, the first differential signal line 131 is a set of a first signal line 131a and a second signal line 131b connected between the near field communication control chip 11 and the matching circuit 12. The second differential signal line 132 is a set of a third signal line 132a and a fourth signal line 132b connected between the matching circuit 12 and the common ring line 30.
The lamp strip module 20 includes a lamp strip driving circuit 21 and a plurality of lamp beads 22. The lamp strip driving circuit 21 is connected to the common ring line 30. The lamp beads 22 are arranged on the common annular line 30. The lamp strip driving circuit 21 can control the lamp beads 22 to be lighted through the common annular line 30.
The lamp strip driving circuit 21 includes a positive output terminal 211 and a negative output terminal 212. The positive electrode output terminal 211 and the negative electrode output terminal 212 are connected to the common ring line 30, respectively.
In some embodiments, the plurality of beads 22 are LED arrays, consisting of a plurality of LEDs, and are disposed on the common ring line 30 at a set distance and position.
The common ring line 30 may be a metal trace on a flexible printed circuit (FPC, flexible Printed Circuit) or other substrate.
The common ring line 30 includes a positive electrode signal line 31 and a negative electrode signal line 32. The positive electrode signal line 31 and the negative electrode signal line 32 are both annular, and the positive electrode signal line 31 and the negative electrode signal line 32 are parallel. The circuit designed in this way can meet the requirements of the lamp strip on wiring and the requirements of the near field communication circuit on wiring. The matching circuit 12 and the positive electrode signal line 31, and the matching circuit 12 and the negative electrode signal line 32 are connected through one second differential signal line 132, respectively. The positive and negative electrodes of the lamp strip driving circuit 21 are connected to the positive electrode signal line 31 or the negative electrode signal line 32, respectively. The plurality of lamp beads 22 are respectively connected between the positive electrode signal line 31 and the negative electrode signal line 32.
In some embodiments, one end of the positive signal line 31 is connected to the positive output terminal 211 of the lamp strip driving circuit 21, and the other end is open circuit, and the positive signal line 31 is a positive line for driving the lamp beads 22 to light. One end of the negative electrode signal line 32 is connected to the negative electrode output end 212 of the lamp strip driving circuit 21, the other end is open-circuited, and the negative electrode signal line 32 is a negative electrode line for driving the lamp beads 22 to light. The anode of the lamp bulb 22 is connected to the positive electrode signal line 31, and the cathode of the lamp bulb 22 is connected to the negative electrode signal line 32.
The lamp strip driving circuit 21 is an LED driving chip, and can generate constant signal voltage at the positive electrode output terminal 211 and the negative electrode output terminal 212, and when the voltage between the positive electrode output terminal 211 and the negative electrode output terminal 212 exceeds the conducting voltage of the lamp bead 22, the lamp bead 22 can conduct and emit light.
The blocking capacitor 40 is used for isolating the lamp band module 20 and the near field communication module 10 from each other, avoiding electromagnetic influence between them, and disconnecting the two positive and negative signal lines at low frequency and conducting at high frequency, thereby isolating the direct current signals between the positive and negative signal lines, but conducting the alternating current signals of the positive and negative electrodes. The blocking capacitor 40 is connected in series with the positive signal line 31 and the negative signal line 32, and is located at an end of the common loop line 30 away from the matching circuit 12.
In some embodiments, one end of the blocking capacitor 40 is connected to the open end of the positive signal line 31, and the other end of the blocking capacitor 40 is connected to the open end of the negative signal line 32. One end of one of the second differential signal lines 132 is connected to the matching circuit 12, and the other end is connected to one end of the positive signal line 31 near the positive output end 211 of the lamp strip driving circuit 21; one end of the second differential signal line 132 is connected to the matching circuit 12, and the other end is connected to one end of the negative electrode signal line 32 near the negative electrode output end 212 of the lamp strip driving circuit 21.
The blocking capacitor 40 is used for communicating the positive electrode signal line 31 with the negative electrode signal line 32, so that the positive electrode signal line 31 and the negative electrode signal line 32 form a loop antenna for transmitting and receiving the modulated signal of the high frequency modulated signal output by the near field communication control chip 11; the dc blocking capacitor 40 can prevent the lamp strip driving circuit 21 from being short-circuited at a constant voltage supplied to the positive electrode signal line 31 and the negative electrode signal line 32 through the positive electrode output terminal 211 and the negative electrode output terminal 212.
In some embodiments, the positive signal line 31, the negative signal line 32 and the blocking capacitor 40 form a dual turn near field communication loop antenna.
The positive signal line 31, the negative signal line 32 and the blocking capacitor 40 are connected in series to form a double-turn coil, and the calculation formula l=l of the NFC inductance value is calculated 0 N 2 Wherein L is 0 The inductance of the single-turn coil is represented by N, which is the number of turns of the NFC coil. It is known that, at the same area, the double-turn antenna can provide 4 times the inductance of the single-turn antenna, i.e., the double-turn antenna can achieve the same inductance as the single-turn antenna with a smaller area. Therefore, the area of the antenna can be reduced by the double-turn antenna, and the circuit can be miniaturized.
When the near field communication circuit structure 100 realizes the lamp band function, a constant forward voltage is generated between the positive electrode output end 211 and the negative electrode output end 212 of the lamp band driving circuit 21, the positive electrode signal line 31 and the negative electrode signal line 32 conduct the forward voltage generated by the lamp band driving circuit 21 to two ends of the lamp bead 22, and when the forward voltage is greater than the conducting voltage of the lamp bead 22, the lamp bead 22 can convert electric energy into light energy to emit light.
Referring to fig. 2, when the near field communication circuit structure 100 implements a near field communication function to transmit signals, the near field communication control chip 11 converts information to be transmitted into modulated signals, the modulated signals are transmitted to one end of the matching circuit 12 through the first differential signal line 131, the matching circuit 12 performs impedance transformation on the modulated signals, and then the modulated signals are transmitted to one end of the positive signal line 31 and one end of the negative signal line 32, which are close to the lamp band driving circuit 21, through the second differential signal line 132, and are converted into a time-varying magnetic field on a ring antenna composed of the positive signal line 31, the negative signal line 32 and the blocking capacitor 40.
When the near field communication circuit structure 100 receives signals, the loop antenna composed of the positive signal line 31, the negative signal line 32 and the blocking capacitor 40 converts the external time-varying magnetic field into received signals, and then transmits the received signals to the matching circuit 12 via the second differential signal line 132, the impedance-transformed received signals of the matching circuit 12 are transmitted to the near field communication control chip 11 via the first differential signal line 131, and the near field communication control chip 11 demodulates the received signals to restore the modulated signals therein, so as to obtain the required information.
Referring to fig. 3, in some embodiments, one end of the blocking capacitor 40 is connected to one end of the positive signal line 31 near the positive output terminal 211 of the lamp strip driving circuit 21, and the other end is connected to one end of the negative signal line 32 near the negative output terminal 212 of the lamp strip driving circuit 21. One end of one of the second differential signal lines 132 is connected to the matching circuit 12, and the other end is connected to the open end of the positive signal line 31; one end of the other second differential signal line 132 is connected to the matching circuit 12, and the other end is connected to the open end of the negative signal line 32.
In this case, the blocking capacitor 40 may also connect the positive electrode signal line 31 and the negative electrode signal line 32 to form a loop antenna.
According to the near field communication circuit structure 100 provided by the utility model, the lamp band module 20 and the near field communication module 10 share the positive electrode signal line 31 and the negative electrode signal line 32 of the common annular line 30, and the alternating current signal and the direct current signal are isolated through the blocking capacitor 40, and the near field communication module 10 uses the positive electrode signal line 31, the negative electrode signal line 32 and the blocking capacitor 40 as the near field communication annular antenna, so that the near field communication module 10 does not need to be additionally provided with the near field communication annular antenna, the circuit can be compact, the internal space of mobile communication equipment is saved, and the equipment cost is saved. The number of turns of the common loop line 30 is large, so that the area of the antenna can be reduced, and the circuit can be miniaturized.
Example two
Referring to fig. 4, a near field communication circuit structure 100 is provided in the present embodiment, and is used in an electronic device. The present embodiment differs from the first embodiment in that:
the near field communication circuit structure 100 further comprises a protection module 50. The protection module 50 is used for protecting the lamp bead 22 of the lamp band module 20, and preventing the lamp bead 22 from being damaged irreversibly due to voltage breakdown of the near field communication module 10.
Specifically, since the second differential signal line 132 is connected to the positive signal line 31 and the negative signal line 32, when the modulated signal voltage of the near field communication exceeds the maximum voltage that can be borne by the lamp bead 22, the lamp bead 22 is damaged by irreversible breakdown.
The protection module 50 includes two transient diodes 51 (TVS, transient Voltage Suppressor). The two transient diodes 51 are connected in parallel to the two second differential signal lines 132, respectively.
The clamping voltage of the transient diode 51 is lower than the maximum voltage that the lamp bead 22 can bear, and when the modulated signal voltage of the near field communication exceeds the clamping voltage of the transient diode 51, the transient diode 51 is conducted, so that the lamp bead 22 connected between the positive electrode signal line 31 and the negative electrode signal line 32 is protected.
Referring to fig. 5, in some embodiments, a magnetic protection layer 33, such as ferrite, nanocrystalline, or other ferromagnetic material, may be disposed under the positive electrode signal line 31 and the negative electrode signal line 32. The magnetic shield layer 33 can weaken the reverse current generated by the metal under the positive signal line 31 and the negative signal line 32, so that the effective magnetic field intensity generated by the loop antenna can be improved when the loop antenna is used as a near field communication function.
Example III
Referring to fig. 1 to 5, an electronic device is provided in this embodiment. The electronic device comprises a device body and a near field communication circuit structure 100 arranged in the device body. The near field communication circuit structure 100 is the near field communication circuit structure 100 in the first embodiment or the second embodiment. The near field communication circuit structure 100 can realize near field communication and lamp band functions, and enables the near field communication loop antenna and the lamp band to share a circuit, thereby realizing the compactness of the circuit and being beneficial to the miniaturization and the performance improvement of the mobile communication device.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. The utility model provides a near field communication circuit structure, its characterized in that includes near field communication module, lamp area module, sharing ring line and blocking capacitor, sharing ring line includes positive pole signal line and the negative pole signal line of walking the line, positive pole signal line with the negative pole signal line all is the annular, lamp area module includes lamp area drive circuit and a plurality of lamp pearl, lamp area drive circuit with positive pole signal line with the negative pole signal line is connected, a plurality of the lamp pearl connect respectively in between positive pole signal line with the negative pole signal line, near field communication module with positive pole signal line with the negative pole signal line is connected, positive pole signal line with the negative pole signal line passes through blocking capacitor establishes ties.
2. The near field communication circuit structure of claim 1, wherein one end of the positive signal line is connected to a positive output terminal of the lamp strip driving circuit, and one end of the negative signal line is connected to a negative output terminal of the lamp strip driving circuit.
3. The near field communication circuit structure of claim 2, wherein one end of the blocking capacitor is connected with one end of the positive electrode signal wire away from the positive electrode output end, the other end of the blocking capacitor is connected with one end of the negative electrode signal wire away from the negative electrode output end, and the near field communication module is respectively connected with one end of the positive electrode signal wire close to the positive electrode output end and one end of the negative electrode signal wire close to the negative electrode output end through two differential signal wires.
4. The near field communication circuit structure of claim 2, wherein one end of the blocking capacitor is connected to one end of the positive electrode signal line near the positive electrode output end, and the other end of the blocking capacitor is connected to one end of the negative electrode signal line near the negative electrode output end; the near field communication module is respectively connected to one end, far away from the positive electrode output end, of the positive electrode signal wire and one end, far away from the negative electrode output end, of the negative electrode signal wire through two differential signal wires.
5. The near field communication circuit structure of claim 1, wherein the near field communication module comprises a near field communication control chip, a matching circuit, two first differential signal lines and a second differential signal line, the near field communication control chip and the matching circuit are connected through the first differential signal lines, and the matching circuit and the positive electrode signal line and the negative electrode signal line are respectively connected through one second differential signal line.
6. The near field communication circuit structure of claim 5, further comprising two transient diodes connected in parallel on the two second differential signal lines, respectively.
7. The near field communication circuit structure of claim 1, wherein the positive signal line, the negative signal line and the blocking capacitor are connected in series to form a double turn coil.
8. The near field communication circuit structure of claim 1, wherein the positive signal line and the negative signal line are metal traces on an FPC.
9. The near field communication circuit structure of claim 1, wherein a magnetic shield layer is further disposed under the positive signal line and the negative signal line.
10. An electronic device comprising the near field communication circuit structure of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320512218.XU CN219643911U (en) | 2023-03-07 | 2023-03-07 | Near field communication circuit structure and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320512218.XU CN219643911U (en) | 2023-03-07 | 2023-03-07 | Near field communication circuit structure and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN219643911U true CN219643911U (en) | 2023-09-05 |
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|---|---|---|---|
| CN202320512218.XU Active CN219643911U (en) | 2023-03-07 | 2023-03-07 | Near field communication circuit structure and electronic equipment |
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| CN (1) | CN219643911U (en) |
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2023
- 2023-03-07 CN CN202320512218.XU patent/CN219643911U/en active Active
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