CN203070320U - Reading-writing module for handheld type RFID reading-writing device and reading-writing device - Google Patents
Reading-writing module for handheld type RFID reading-writing device and reading-writing device Download PDFInfo
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- CN203070320U CN203070320U CN 201220691794 CN201220691794U CN203070320U CN 203070320 U CN203070320 U CN 203070320U CN 201220691794 CN201220691794 CN 201220691794 CN 201220691794 U CN201220691794 U CN 201220691794U CN 203070320 U CN203070320 U CN 203070320U
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Abstract
The utility model relates to a reading-writing module for a handheld type RFID reading-writing device. The reading-writing module comprises a baseband control unit, a power supply unit, an ultra-high frequency unit and a high-frequency unit; and the ultra-high frequency unit and the high-frequency unit are respectively connected with the different ports of the baseband control unit and carry out data interaction with the ports. The power supply unit includes: a first power supply module, which supplies power for the baseband control unit; a second power supply module, which outputs a power supply voltage and supplies power for the ultra-high frequency unit under the control of a first control signal outputted by the baseband control unit; and a third power supply module, which outputs a power supply voltage and supplies power for high-frequency unit under the control of a second control signal outputted by the baseband control unit. And the baseband control unit outputs any one of the first control signal and the second control signal according the type of the received protocol sent by an upper computer. With utilization of the reading-writing module for a handheld type RFID reading-writing device and the reading-writing device, the following beneficial effects are realized: electronic tags of multiple channels can be read and written by the reading-writing module; and the size of the reading-writing module is small and the weight thereof is light.
Description
Technical field
The utility model relates to field of radio frequency identification, more particularly, relates to a kind of module for reading and writing for the handheld RFID read write line and read write line thereof.
Background technology
RFID technology application industry is very extensive at present, as logistics, books, traffic, herding etc., all trades and professions are also varied to the demand of rfid interrogator, because handheld RFID read write line i.e. " hand-held set " is easy to carry, ease for use is good, be subjected to client's favor deeply, so the hand-held set diversified demand is especially remarkable.Hand-held set in actual use, because it moves with holding personnel, so may run into various environments for use and various electronic tag, occurred using on-the-spot application demand (that is to say, may under an environment for use, read the data of the multiple label that is in different frequency range) to the two-band read-write.Simultaneously, the mobility of hand-held set also requires its cube little, in light weight, so that the user of service can hand use for a long time and can not feel very tried.Existing hand-held set can only be read and write the electronic tag of a channel basically, now for the application that may have the label of multiple channel under the above-mentioned environment, all is to adopt different read write lines to read and write, and this has brought inconvenience to the user.
The utility model content
The technical problems to be solved in the utility model is, can only read and write the defective that electronic tag, weight are big, volume is bigger of a channel at the above-mentioned existing hand-held set of prior art, a kind of electronic tag that can read and write a plurality of channels, in light weight, the module for reading and writing and the read write line thereof that are used for the handheld RFID read write line that volume is little are provided.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of module for reading and writing for the handheld RFID read write line, comprise baseband control unit, power supply unit, ultrahigh frequency unit and high frequency unit; To be connected the line data of going forward side by side mutual with the different port of described baseband control unit respectively for described ultrahigh frequency unit and described high frequency unit; Described power supply unit be included as the power supply of described baseband control unit first power module, output supply voltage under first control signal control of described baseband control unit output for the second source module of ultrahigh frequency unit power supply and second control signal control in described baseband control unit output under output supply voltage be the 3rd power module of high frequency unit power supply; Protocol type that described baseband control unit receives according to it, that sent by host computer is exported in described first control signal or described second control signal.
Further, described ultrahigh frequency unit comprises ultrahigh frequency sending/receiving module and ultra-high frequency antenna, and described ultrahigh frequency sending/receiving module is connected between described baseband control unit and the described ultra-high frequency antenna; Described high frequency unit comprises high frequency sending/receiving module and high frequency antenna, and described high frequency sending/receiving module is connected between described baseband control unit and the described high frequency antenna.
Further, described ultrahigh frequency sending/receiving module further comprises for the ultra-high frequency antenna, the directional coupler that is connected with described ultra-high frequency antenna, ultrahigh frequency RFID integrated circuit, ultrahigh frequency transmitting branch, ultrahigh frequency receiving branch and the ultrahigh frequency oscillating unit that send or receive uhf electromagnetic wave; Described ultrahigh frequency transmitting branch is connected between the rf input interface of the radio-frequency (RF) output end mouth of described ultrahigh frequency RFID integrated circuit and described directional coupler; Described ultrahigh frequency receiving branch is connected between the radio frequency output interface of the rf inputs mouth of described ultrahigh frequency RFID integrated circuit and described directional coupler; Described ultrahigh frequency oscillating unit is connected with the local oscillations input/output port of described ultrahigh frequency RFID integrated circuit.
Further, described ultrahigh frequency receiving branch comprises that first equilibrates to imbalance converter; Described ultrahigh frequency transmitting branch comprise successively connect equilibrate to imbalance converter, first radio-frequency (RF) switch, dielectric filter, second radio-frequency (RF) switch, power amplifier and low-pass filter; Described second input end that equilibrates to imbalance converter is connected with the radio-frequency (RF) output end mouth of described ultrahigh frequency RFID integrated circuit, and the output terminal of described low-pass filter is connected with the rf inputs of described directional coupler.
Further, described high frequency sending/receiving module further comprises being converted to baseband signal or baseband signal being converted to the high-frequency radio frequency signal for the electromagnetic wave signal that described high frequency antenna is received and sends to the high-frequency RF ID integrated circuit of described high frequency antenna and generation and carry the high frequency local oscillated signal to the high frequency oscillation unit of described high-frequency RF ID integrated circuit.
Further, the agreement that described baseband control unit receives is the ISO18000-6C agreement, and it exports first control signal; The agreement that described baseband control unit receives is ISO14443A agreement or ISO15693 agreement, exports second control signal.
Further, described ultra-high frequency antenna is the ceramic body antenna, and it is welded on the circuit board by tie point; Described high frequency antenna is to be arranged on the printed antenna that the Copper Foil on the circuit board forms.
Further, described ultra-high frequency antenna and described high frequency antenna are arranged on the same printed circuit board, and described ultra-high frequency antenna is welded on the described circuit board, and described high frequency antenna is around the tie point of described ultra-high frequency antenna.
Further, described baseband control unit, power supply unit, ultrahigh frequency sending/receiving module and high frequency sending/receiving module are arranged on the same circuit board, described circuit board is arranged in the shielding box of a sealing, is connected with high frequency antenna with described ultra-high frequency antenna by cable respectively.
The utility model also relates to a kind of handheld RFID read write line, comprises the RFID module for reading and writing, it is characterized in that, the above-mentioned any described module for reading and writing of described RFID module for reading and writing.
Implement module for reading and writing and the read write line thereof for the handheld RFID read write line of the present utility model, has following beneficial effect: owing to be provided with ultrahigh frequency unit and high frequency unit at module for reading and writing, and this ultrahigh frequency unit and high frequency unit share same baseband control unit, simultaneously, using a plurality of power modules different, that controlled by the baseband control unit output signal is that above-mentioned ultrahigh frequency unit and high frequency unit are powered respectively, when making one of them cell operation, not working in the another one unit, reduces its interference each other; So this module for reading and writing can be read and write the electronic tag of a plurality of channels, and volume and weight are all less.
Description of drawings
Fig. 1 is that the utility model is used for the module for reading and writing of handheld RFID read write line and the structural representation of read write line embodiment module for reading and writing thereof;
Fig. 2 is the structural representation of ultrahigh frequency unit among the described embodiment;
Fig. 3 is the structural representation of described embodiment medium-high frequency unit.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further.
As shown in Figure 1, at the module for reading and writing for the handheld RFID read write line of the present utility model and read write line embodiment thereof, module for reading and writing comprises baseband control unit 1, power supply unit 2, ultrahigh frequency unit 3 and high frequency unit 4; Wherein, baseband control unit 1 receives the instruction and data that its host computer (not shown) is sent, and the output control signal is controlled the work of whole module for reading and writing; Simultaneously, this base band control module 1 also is transferred to the baseband signal that is ready for sending in above-mentioned ultrahigh frequency unit 3 or the high frequency unit 4 by different FPDP, makes it be converted to ultra-high frequency signal or high-frequency signal sends; This baseband control unit 1 also receives above-mentioned ultrahigh frequency unit 3 or the next baseband signal of high frequency unit 4 transmission in addition, obtains data content wherein.In the present embodiment, as shown in Figure 1, power supply unit 2 comprises first power module 21, second source module 22 and the 3rd power module 23, wherein, first power module 21 is above-mentioned baseband control unit 1 power supply, and second source module 22 and the 3rd power supply 23 are respectively ultrahigh frequency unit 3 and high frequency unit 4 power supplies respectively under the control of the control signal of baseband control unit 1 output, make its work.What deserves to be mentioned is that in the present embodiment, above-mentioned second source module 22 is by first control signal control of baseband control unit 1 output, and the 3rd power module 23 is by second control signal control of baseband control unit 1 output.When baseband control unit 1 output first control signal, second source module 22 is 3 power supplies of ultrahigh frequency unit, 3 work of ultrahigh frequency unit, the radiofrequency signal that receives or launch ultrahigh frequency; Simultaneously, baseband control unit 1 can't be exported second control signal, and just the 3rd power module 23 does not give high frequency unit 4 power supplies, and high frequency unit 4 is not worked; Otherwise, if baseband control unit 1 output second control signal, then high frequency unit work, similarly, this moment, baseband control unit 1 can not exported first control signal yet, and can not work in ultrahigh frequency unit 3.That is to say, going up at the same time that baseband control unit 1 can only be exported in above-mentioned first control signal and second control signal, another then can not exported.This makes above-mentioned ultrahigh frequency unit 3 and high frequency unit 4 can only have one can access the power supply supply and work, and another can not worked owing to there is not the power supply supply.Influencing each other between the radiofrequency signal when having avoided two unit to work simultaneously makes that unit of work is more stable, reliable.In addition, in the present embodiment, baseband control unit 1 is exported above-mentioned first control signal or second control signal according to its protocol type that receives, sent by its host computer.More particularly, the agreement that receives when baseband control unit 1 is the ISO18000-6C agreement, and it exports first control signal, makes ultrahigh frequency unit 3 work; Be ISO14443A agreement or ISO15693 agreement when baseband control unit connects 1 agreement of receiving, export second control signal, make high frequency unit 4 work.
As shown in Figure 2, in the present embodiment, ultrahigh frequency unit 3 comprises ultrahigh frequency sending/receiving module and ultra-high frequency antenna (being the ultrahigh frequency sending/receiving module among Fig. 2 except ultra-high frequency antenna), and the ultrahigh frequency sending/receiving module is connected between baseband control unit 1 and the ultra-high frequency antenna; And the ultrahigh frequency sending/receiving module comprises directional coupler, ultrahigh frequency RFID integrated circuit, difference high frequency transmitting branch (equilibrating to imbalance converter, first radio-frequency (RF) switch, dielectric filter, second radio-frequency (RF) switch, power amplifier and low-pass filter by second among Fig. 2 forms), ultrahigh frequency receiving branch (first equilibrates to imbalance converter) and strophotron.The ultrahigh frequency transmitting branch is connected between the rf input interface of the radio-frequency (RF) output end mouth of ultrahigh frequency RFID integrated circuit and directional coupler, be used for transmission by the output of ultrahigh frequency RFID integrated circuit, prepare the radiofrequency signal that sends by ultra-high frequency antenna; The ultrahigh frequency receiving branch is connected between the radio frequency output interface of the rf inputs mouth of ultrahigh frequency RFID integrated circuit and directional coupler, is used for signal that transmission receives by above-mentioned ultra-high frequency antenna to above-mentioned ultrahigh frequency RFID integrated circuit; The ultrahigh frequency oscillating unit is connected with the local oscillations input/output port of ultrahigh frequency RFID integrated circuit, is provided as the oscillator signal of local oscillating frequency.As shown in Figure 2, the ultrahigh frequency receiving branch comprises that first equilibrates to imbalance converter; And the ultrahigh frequency transmitting branch comprise successively connect equilibrate to imbalance converter, first radio-frequency (RF) switch, dielectric filter (in Fig. 2, dielectric filter is made of two dielectric filters arranged side by side), second radio-frequency (RF) switch, power amplifier and low-pass filter; Second input end that equilibrates to imbalance converter is connected with the radio-frequency (RF) output end mouth of ultrahigh frequency RFID integrated circuit, and the output terminal of low-pass filter is connected with the rf inputs of directional coupler.
In the present embodiment, as shown in Figure 3, high frequency unit 4 comprises high frequency sending/receiving module and high frequency antenna, and described high frequency sending/receiving module is connected between described baseband control unit and the described high frequency antenna; Described high frequency sending/receiving module further comprises being converted to baseband signal or baseband signal being converted to the high-frequency radio frequency signal for the electromagnetic wave signal that described high frequency antenna is received and sends to the high-frequency RF ID integrated circuit of described high frequency antenna and generation and carry the high frequency local oscillated signal to the high frequency oscillation unit of described high-frequency RF ID integrated circuit.
In addition, in the present embodiment, above-mentioned ultra-high frequency antenna is the ceramic body antenna, and it is welded on the circuit board by tie point; And high frequency antenna is to be arranged on the printed antenna that the Copper Foil on the circuit board forms.Ultra-high frequency antenna and high frequency antenna are arranged on the same printed circuit board, and ultra-high frequency antenna is welded on the described circuit board, and the track that forms high frequency antenna then distributes around the tie point of ultra-high frequency antenna.This set can be so that antenna occupation space minimum.
Simultaneously, above-mentioned baseband control unit 1, power supply unit 2, ultrahigh frequency sending/receiving module and high frequency sending/receiving module are arranged on the same circuit board (in this enforcement, this circuit board is not same circuit board with the circuit board that antenna is set, connect by cable therebetween), this circuit board (being provided with the circuit board of baseband control unit 1) is arranged in the shielding box of a sealing, is connected with described ultra-high frequency antenna, high frequency antenna and host computer (comprising that some constitute the peripheral components of read write line) by cable respectively.
In sum, in the present embodiment, the concrete course of work of module for reading and writing is as follows: power supply unit 2 is given each module for power supply that connects, baseband control unit 1 is selected the work agreement according to its instruction that receives then, if select the ISO18000-6C agreement, baseband control unit 1 output first control signal, make second source module 22 be 3 power supplies of ultrahigh frequency unit, start 3 work of ultrahigh frequency unit, carry out exchanges data with the ultrahigh frequency label, at last the information of ultrahigh frequency label is sent to baseband control unit 1; If select ISO14443A agreement or ISO15693 agreement, baseband control unit 1 output second control signal, make the 3rd power module 23 be high frequency unit 4 power supplies, start high frequency unit 4 work, carry out data interaction with high-frequency label, at last the information of high-frequency label is sent to baseband control unit 1, send the hand-held set body by baseband control unit 1 to by the interface circuit (not shown) again.
Wherein, baseband control unit 1 is used for control ultrahigh frequency unit 3 and high frequency unit 4 work, and the data that ultrahigh frequency unit 3 and high frequency unit 4 return are handled, and communicates by interface circuit and hand-held set body.
In the present embodiment, second source module 22 and the 3rd power module 23 adopt a plurality of mu balanced circuits to be the parts power supply of its power supply respectively, and the DC voltage of 3.3V and 5V is provided respectively.
The course of work of ultrahigh frequency unit 3 is: the comprehensive frequency generator that ultrahigh frequency RFID integrated circuit and strophotron are formed, produce difference carrier signal, equilibrating to imbalance converter through second is converted to the single-channel carrier signal and outputs to first radio-frequency (RF) switch, first radio-frequency (RF) switch is opened the signal output part with second dielectric filter, after the second dielectric filter filtering, 920MHz-925MHz frequency range carrier signal is outputed to the corresponding incoming end of second radio-frequency (RF) switch, and will output to the amplification that power amplifier carries out power through the carrier signal of filtering by second radio-frequency (RF) switch, signal after the amplification outputs to the inhibition that low-pass filter carries out harmonic wave, output to directional coupler then, by ultra-high frequency antenna carrier signal is radiate at last, activate label, communicate with label.During reception, the signal flow direction that ultra-high frequency antenna is received equilibrates to imbalance converter by directional coupler, first and is transferred to the ultrahigh frequency RFID integrated circuit, be that ultra-high frequency antenna is exported to directional coupler with the signal that receives, output to first through its directional couple end and equilibrate to imbalance converter, equilibrate to imbalance converter through first the one-channel signal of input is converted to differential signal and exports to the ultrahigh frequency RFID integrated circuit.After label is activated by carrier wave, returning rf echo signal is received by ultra-high frequency antenna, output to directional coupler, and output to first by its coupled end and equilibrate to imbalance converter, being converted to differential signal outputs to the ultrahigh frequency IC interior and carries out that small-signal amplification, demodulation, filtering, digital signal are amplified and decoding, at last data are sent to baseband control unit 1 and handle, the data after baseband control unit 1 will be handled send the hand-held set body to.
And high frequency unit 4 comprises high-frequency RF ID integrated circuit and the high frequency oscillator that is attached thereto, and high-frequency RF ID integrated circuit links to each other with baseband control unit 1.In the present embodiment, high frequency antenna is selected the 13.56MHz band antenna for use.High frequency unit 4 is made up of high-frequency RF ID radio-frequency transmissions circuit and high-frequency RF ID radio-frequency (RF) receiving circuit.High frequency oscillator the local oscillation signal that produces is outputed to high-frequency RF ID integrated circuit and through it after inside is modulated and is amplified, the carrier signal that output has been amplified is to high frequency antenna, by high frequency antenna carrier signal is radiate, activate label, communicate with label.After label is activated by carrier wave, returning rf echo signal is received by high frequency antenna, output to high-frequency RF ID integrated circuit, portion carries out small-signal amplification, demodulation, filtering within it, digital signal is amplified and decoding, at last data are sent to baseband control unit 1 and handle, the data after baseband control unit 1 will be handled send the hand-held set body to.
The utility model also relates to a kind of handheld RFID read write line, comprises the RFID module for reading and writing, the module for reading and writing that is used for the handheld RFID read write line that this RFID module for reading and writing is above-mentioned.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a module for reading and writing that is used for the handheld RFID read write line is characterized in that, comprises baseband control unit, power supply unit, ultrahigh frequency unit and high frequency unit; To be connected the line data of going forward side by side mutual with the different port of described baseband control unit respectively for described ultrahigh frequency unit and described high frequency unit; Described power supply unit be included as the power supply of described baseband control unit first power module, output supply voltage under first control signal control of described baseband control unit output for the second source module of ultrahigh frequency unit power supply and second control signal control in described baseband control unit output under output supply voltage be the 3rd power module of high frequency unit power supply; Protocol type that described baseband control unit receives according to it, that sent by host computer is exported in described first control signal or described second control signal.
2. the module for reading and writing for the handheld RFID read write line according to claim 1, it is characterized in that, described ultrahigh frequency unit comprises ultrahigh frequency sending/receiving module and ultra-high frequency antenna, and described ultrahigh frequency sending/receiving module is connected between described baseband control unit and the described ultra-high frequency antenna; Described high frequency unit comprises high frequency sending/receiving module and high frequency antenna, and described high frequency sending/receiving module is connected between described baseband control unit and the described high frequency antenna.
3. the module for reading and writing for the handheld RFID read write line according to claim 2, it is characterized in that described ultrahigh frequency sending/receiving module further comprises directional coupler, ultrahigh frequency RFID integrated circuit, ultrahigh frequency transmitting branch, ultrahigh frequency receiving branch and the ultrahigh frequency oscillating unit that is connected with described ultra-high frequency antenna; Described ultrahigh frequency transmitting branch is connected between the rf input interface of the radio-frequency (RF) output end mouth of described ultrahigh frequency RFID integrated circuit and described directional coupler; Described ultrahigh frequency receiving branch is connected between the radio frequency output interface of the rf inputs mouth of described ultrahigh frequency RFID integrated circuit and described directional coupler; Described ultrahigh frequency oscillating unit is connected with the local oscillations input/output port of described ultrahigh frequency RFID integrated circuit.
4. the module for reading and writing for the handheld RFID read write line according to claim 3 is characterized in that, described ultrahigh frequency receiving branch comprises that first equilibrates to imbalance converter; Described ultrahigh frequency transmitting branch comprise successively connect equilibrate to imbalance converter, first radio-frequency (RF) switch, dielectric filter, second radio-frequency (RF) switch, power amplifier and low-pass filter; Described second input end that equilibrates to imbalance converter is connected with the radio-frequency (RF) output end mouth of described ultrahigh frequency RFID integrated circuit, and the output terminal of described low-pass filter is connected with the rf inputs of described directional coupler.
5. the module for reading and writing for the handheld RFID read write line according to claim 4, it is characterized in that described high frequency sending/receiving module further comprises being converted to baseband signal or baseband signal being converted to the high-frequency radio frequency signal for the electromagnetic wave signal that described high frequency antenna is received and sends to the high-frequency RF ID integrated circuit of described high frequency antenna and generation and carry the high frequency local oscillated signal to the high frequency oscillation unit of described high-frequency RF ID integrated circuit.
6. the module for reading and writing for the handheld RFID read write line according to claim 5 is characterized in that, the agreement that described baseband control unit receives is the ISO18000-6C agreement, and it exports first control signal; The agreement that described baseband control unit receives is ISO14443A agreement or ISO15693 agreement, exports second control signal.
7. the module for reading and writing for the handheld RFID read write line according to claim 6 is characterized in that, described ultra-high frequency antenna is the ceramic body antenna, and it is welded on the circuit board by tie point; Described high frequency antenna is to be arranged on the printed antenna that the Copper Foil on the circuit board forms.
8. the module for reading and writing for the handheld RFID read write line according to claim 7, it is characterized in that, described ultra-high frequency antenna and described high frequency antenna are arranged on the same printed circuit board, described ultra-high frequency antenna is welded on the described circuit board, and described high frequency antenna is around the tie point of described ultra-high frequency antenna.
9. the module for reading and writing for the handheld RFID read write line according to claim 8, it is characterized in that, described baseband control unit, power supply unit, ultrahigh frequency sending/receiving module and high frequency sending/receiving module are arranged on the same circuit board, described circuit board is arranged in the shielding box of a sealing, is connected with high frequency antenna with described ultra-high frequency antenna by cable respectively.
10. a handheld RFID read write line comprises the RFID module for reading and writing, it is characterized in that, described RFID module for reading and writing is as any described module for reading and writing of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691794 CN203070320U (en) | 2012-12-14 | 2012-12-14 | Reading-writing module for handheld type RFID reading-writing device and reading-writing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691794 CN203070320U (en) | 2012-12-14 | 2012-12-14 | Reading-writing module for handheld type RFID reading-writing device and reading-writing device |
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| Publication Number | Publication Date |
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| CN203070320U true CN203070320U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220691794 Expired - Lifetime CN203070320U (en) | 2012-12-14 | 2012-12-14 | Reading-writing module for handheld type RFID reading-writing device and reading-writing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834956A (en) * | 2015-04-30 | 2015-08-12 | 东莞电子科技大学电子信息工程研究院 | Ultrahigh frequency and high frequency radio-frequency identification label and signal transmission method thereof |
| CN109388984A (en) * | 2017-08-10 | 2019-02-26 | 无锡陶唐智能技术有限公司 | Apart from read-write system in a kind of RFID double frequency near field |
-
2012
- 2012-12-14 CN CN 201220691794 patent/CN203070320U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834956A (en) * | 2015-04-30 | 2015-08-12 | 东莞电子科技大学电子信息工程研究院 | Ultrahigh frequency and high frequency radio-frequency identification label and signal transmission method thereof |
| CN104834956B (en) * | 2015-04-30 | 2017-12-08 | 东莞电子科技大学电子信息工程研究院 | A kind of hyperfrequency and high-frequency radio frequency identification label and its method for transmitting signals |
| CN109388984A (en) * | 2017-08-10 | 2019-02-26 | 无锡陶唐智能技术有限公司 | Apart from read-write system in a kind of RFID double frequency near field |
| CN109388984B (en) * | 2017-08-10 | 2021-12-21 | 无锡陶唐智能技术有限公司 | RFID dual-frequency near-field middle-distance reading and writing system |
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Granted publication date: 20130717 |