CN110086509A - A kind of RFID system of high channel filtering - Google Patents
A kind of RFID system of high channel filtering Download PDFInfo
- Publication number
- CN110086509A CN110086509A CN201910396209.7A CN201910396209A CN110086509A CN 110086509 A CN110086509 A CN 110086509A CN 201910396209 A CN201910396209 A CN 201910396209A CN 110086509 A CN110086509 A CN 110086509A
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- 238000001914 filtration Methods 0.000 title claims abstract description 21
- 230000003321 amplification Effects 0.000 claims abstract description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 14
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0483—Transmitters with multiple parallel paths
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of RFID systems of high channel filtering, including input connector mouth, the input connector mouth is connect with the input terminal of low pass road filter unit and high channel filter unit respectively, low pass road filter unit and high channel filter unit are arranged in parallel, low pass road filter unit and high channel filter unit are connect with the input terminal of signal analysis unit, the output end of the radio-frequency channel matching unit is connect with multi-channel rf channel unit, the output end of the multi-channel rf channel unit and the input terminal of output connection port connect, the output end of the output connection port is connect with signal amplification unit, the present invention is by merging received radiofrequency signal to effectively be filtered the impurity signal in low frequency signal and high-frequency signal and by the way that high and low frequency signal is carried out integration to expand RFDI The identification section of system, while power amplification is carried out to the signal of output, improve the recognition speed and precision of radiofrequency signal.
Description
Technical field
The present invention relates to technical field of RFID, specially a kind of RFID system of high channel filtering.
Background technique
Application No. is a kind of multichannel UHF RFID antenna of " CN201510960223.7 " switches to cut in the prior art
Parallel operation, it includes input radio frequency signal jointing, low pass filter unit, multi-channel rf channel unit, radio-frequency channel matching
Unit, control logic unit and output radiofrequency signal jointing, the input radio frequency signal jointing connect low-pass filtering
Device unit input terminal, the low pass filter unit output end connect multi-channel rf channel unit input terminal, the multi-channel rf
Channel unit is equipped with radio-frequency channel matching unit and control logic unit, the multi-channel rf channel unit output end connection output
Radiofrequency signal jointing starts with from the switching characteristic of PIN pipe being presented under different bias voltages, constructs a performance
Excellent duplexer switch realizes arbitrary switch of the access port in multiple antenna by setting control logic unit,
For the insertion loss in channel within 1.5dB, isolation is then up to 60dB.
But the above-mentioned multichannel UHF RFID antenna switching device still has more obviously in use
Defect: 1, above-mentioned duplexer switch is provided only with a low pass filter unit, is only limitted to height for the filtering of signal
Within the scope of frequency, such signal filtering causes the radiofrequency signal section read relatively narrow, it is difficult to meet different types of RFID device and exist
It is used in different scenes；2, the signal output end of above-mentioned duplexer switch is not provided with effective signal processing apparatus, defeated
Signal out is easy to be influenced and influence the reception of signal receiving structure by environment.
Summary of the invention
The purpose of the present invention is to provide a kind of RFID systems of high channel filtering, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of RFID system of high channel filtering, including the filtering of input connector mouth, low pass road filter unit, high channel are single
Member, control unit, radio-frequency channel matching unit, signal analysis unit, output connection port, multi-channel rf channel unit and signal
Amplifying unit, the input connector mouth are connect with the input terminal of low pass road filter unit and high channel filter unit respectively, institute
State low pass road filter unit and high channel filter unit be arranged in parallel, low pass road filter unit and high channel filter unit with letter
The input terminal connection of number analytical unit, the signal analysis unit are connected to the input terminal of multi-channel rf channel unit, the control
The output end of unit processed is connect with multi-channel rf channel unit, and the output end and multi-channel rf of the radio-frequency channel matching unit are logical
The connection of road unit, the output end of the multi-channel rf channel unit and the input terminal of output connection port connect, and the output connects
The output end for connecing port is connect with signal amplification unit.
Further, the multi-channel rf channel unit include 2,3,4 ... 63 or 64 single channel lists
Member is arranged in parallel between multiple single channel units, and the single channel unit is respectively connected with control logic unit, the control
Logic unit includes logic control level, capacitance and high-frequency inductor.
Further, low pass road filter unit is low-channel filter, and the output end of the input connector mouth is logical
Series connection low pass road filter unit is crossed to connect with power ground.
Further, the high channel filter unit is high pass channel filter, the output of the input connector mouth
End is connect by high channel filter unit of connecting with power ground.
Further, each multi-channel rf channel unit is connected with corresponding control unit, described control unit packet
Logic control end is included, the logic control end passes through connection inductance and list by capacitance connection power ground, the logic control end
The connection of road radio-frequency channel unit.
Further, the signal amplification unit is radio frequency signal amplifiers.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention uses effectively to believe low frequency by the merging of low pass road filter unit and high channel filter unit
Number and high-frequency signal in impurity signal be filtered, by the way that high and low frequency signal is carried out integration to expanding RFDI system
The identification section of system, while the identification range of signal is reduced, so that signal identification is more accurate；
2, the signal of output is carried out power amplification processing by the present invention, effectively increases the output intensity of signal, guarantees letter
It number can be received and recognized in the environment by signal recognition device.
The present invention is used by the merging of low pass road filter unit and high channel filter unit to effectively by low frequency signal
It is filtered with the impurity signal in high-frequency signal and by the way that high and low frequency signal is carried out integration to expand RFDI system
The identification section of system, while power amplification is carried out to the signal of output, improve the recognition speed and precision of signal.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is low-channel filter and high pass channel filter parallel circuit figure of the invention.
In figure: 1 input connector mouth, 2 low pass road filter units, 3 high channel filter units, 4 control units, 5 radio frequencies are logical
Road matching unit, 6 signal analysis units, 7 output connection ports, 8 multi-channel rf channel units, 9 signal amplification units.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2:
A kind of RFID system of high channel filtering, including the filtering of input connector mouth 1, low pass road filter unit 2, high channel
Unit 3, control unit 4, radio-frequency channel matching unit 5, signal analysis unit 6, output connection port 7, multi-channel rf channel are single
Member 8 and signal amplification unit 9, the input with low pass road filter unit 2 and high channel filter unit 3 respectively of input connector mouth 1
End connection, low pass road filter unit 2 and high channel filter unit 3 are arranged in parallel, and low pass road filter unit 2 and high channel filtering are single
Member 3 is connect with the input terminal of signal analysis unit 6, and the input terminal of signal analysis unit 6 and multi-channel rf channel unit 8 connects
Logical, the output end of control unit 4 is connect with multi-channel rf channel unit 8, and output end and the multichannel of radio-frequency channel matching unit 5 are penetrated
Frequency channel unit 8 connects, and the output end of multi-channel rf channel unit 8 is connect with the input terminal of output connection port 7, output connection
The output end of port 7 is connect with signal amplification unit 9, is set by the parallel connection of low pass road filter unit 2 and high channel filter unit 3
It sets, high and low frequency signal effectively can be subjected to integration to expand the identification section of RFDI system, while reducing letter
Number identification range so that signal identification is more accurate, the signal analysis unit 6 in the present embodiment is radio frequency processing chip, is led to
It crosses after radio frequency processing chip arranges the signal of collection and is sent to multi-channel rf channel unit 8, radio frequency processing chip passes through
The radiofrequency signal that low pass road filter unit 2 and high channel filter unit 3 are sent is analyzed and is integrated and is recoded into radio frequency letter
Number it is sent to multi-channel rf channel unit 8, the radio frequency processing chip in the present embodiment selects the limited public affairs of 100,000,100 electronics technology of Chengdu
The E28-2G4M27S type radio frequency processing chip of production is taken charge of, which includes the physical layer of multiplicity and Different Modulations are one
Money high-performance wireless transceiver for Internet of Things, and can be with compatible bluetooth agreement.
As one preferably, multi-channel rf channel unit 8 include 2,3,4 ... 63 or 64 single channels
Unit is arranged in parallel between multiple single channel units, and single channel unit is respectively connected with control logic unit, control logic unit packet
Logic control level, capacitance and high-frequency inductor are included, single-channel RF channel unit is correspondingly arranged on single output connection port,
Channel distance between input connector mouth and single output connection port is equal, guarantees that input connector mouth connects to each output
The track lengths for connecing port are equal, reduce difficulty of matching, guarantee the consistency of each channel insertion loss.
Preferably as one, low pass road filter unit 2 is low-channel filter, and the output end of input connector mouth 1 passes through
Series connection low pass road filter unit 2 is connect with power ground, and the low-channel filter in the present embodiment selects the big rich telecommunication in Foochow limited
The LFCN-5000+ type low-pass filter of company's production, effective filter range of the low-pass filter are 5000MHZ or more frequencies
The radiofrequency signal of section.
Preferably as one, high channel filter unit 3 is high pass channel filter, and the output end of input connector mouth 1 passes through
Series connection high channel filter unit 3 is connect with power ground, and the high pass channel filter in the present embodiment selects the big rich telecommunication in Foochow limited
The HFCN-880+ type high-pass filter of company's production, effective filter range of the high-pass filter is 3200MHZ and following frequency range
Radiofrequency signal.
Preferably as one, each multi-channel rf channel unit 8 is connected with corresponding control unit 4, and control unit 4 includes
Logic control end, logic control end pass through connection inductance and single-channel RF by connection capacitance connection power ground, logic control end
Channel unit 8 connects.
Preferably as one, the signal amplification unit 9 is radio frequency signal amplifiers, and the signal in the present embodiment amplifies single
Member 9 is radio-frequency power amplifier, which selects the AM003536WM-BM-R type of U.S. AMCON company production
The power that frequency microwave power amplifier passes through change signal transmitting as signal amplification unit, the frequency microwave power amplifier
To improve the dynamics that penetrates of signal, anti-stop signal is caused in the environment compared with lossy.
In the present embodiment: C1 ﹑ C2 ﹑ C3, C4 are capacitance；A1, A2 are rectifier diode；R1,R2,R3,R4,R5,R6
For load resistance, low pass road filter unit 2 and high channel filter unit 3 are formed by above-mentioned electric elements.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of RFID system of high channel filtering, it is characterised in that: including input connector mouth (1), low pass road filter unit
(2), high channel filter unit (3), control unit (4), radio-frequency channel matching unit (5), signal analysis unit (6), output connect
Connect port (7), multi-channel rf channel unit (8) and signal amplification unit (9), the input connector mouth (1) respectively with low pass
Road filter unit (2) is connected with the input terminal of high channel filter unit (3), low pass road filter unit (2) and high channel filter
Wave unit (3) is arranged in parallel, low pass road filter unit (2) and high channel filter unit (3) with signal analysis unit (6)
Input terminal connection, the signal analysis unit (6) is connected to the input terminal of multi-channel rf channel unit (8), and the control is singly
The output end of first (4) is connect with multi-channel rf channel unit (8), the output end and multichannel of the radio-frequency channel matching unit (5)
Radio-frequency channel unit (8) connection, the output end of the multi-channel rf channel unit (8) and the input terminal of output connection port (7)
Connection, the output end of the output connection port (7) are connect with signal amplification unit (9).
2. a kind of RFID system of high channel filtering according to claim 1, it is characterised in that: the multi-channel rf channel
Unit (8) includes 2,3,4 ... 63 or 64 single channel units, it is in parallel between multiple single channel units
Setting, the single channel unit are respectively connected with control logic unit, and the control logic unit includes logic control level, blocking
Capacitor and high-frequency inductor.
3. a kind of RFID system of high channel filtering according to claim 1, it is characterised in that: the low channel filtering list
First (2) are low-channel filter, and the output end of the input connector mouth (1) passes through series connection low pass road filter unit (2) and electricity
Connect to source.
4. a kind of RFID system of high channel filtering according to claim 1, it is characterised in that: the high channel filtering is single
First (3) are high pass channel filter, and the output end of the input connector mouth (1) passes through series connection high channel filter unit (3)
It is connect with power ground.
5. a kind of RFID system of high channel filtering according to claim 1, it is characterised in that: each multi-channel rf
Channel unit (8) is connected with corresponding control unit (4), and described control unit (4) includes logic control end, the logic control
By capacitance connection power ground, the logic control end is connect by connecting inductance with single-channel RF channel unit (8) at end.
6. a kind of RFID system of high channel filtering according to claim 1, it is characterised in that: the signal amplification unit
It (9) is radio frequency signal amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396209.7A CN110086509A (en) | 2019-05-14 | 2019-05-14 | A kind of RFID system of high channel filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396209.7A CN110086509A (en) | 2019-05-14 | 2019-05-14 | A kind of RFID system of high channel filtering |
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| Publication Number | Publication Date |
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| CN110086509A true CN110086509A (en) | 2019-08-02 |
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| CN201910396209.7A Pending CN110086509A (en) | 2019-05-14 | 2019-05-14 | A kind of RFID system of high channel filtering |
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| CN203788272U (en) * | 2014-01-23 | 2014-08-20 | 合肥安佛电子技术有限公司 | RM100 receiver front-end assembly module |
| CN104392193A (en) * | 2014-11-12 | 2015-03-04 | 广州中大微电子有限公司 | Card reader and method for filtering received signals of RFID card reader |
| CN104467888A (en) * | 2014-12-31 | 2015-03-25 | 陕西烽火电子股份有限公司 | Multi-channel shortwave receiving device |
| CN105610420A (en) * | 2015-12-21 | 2016-05-25 | 深圳市科陆电子科技股份有限公司 | Multichannel ultrahigh-frequency RFID antenna switch switcher |
| CN106099370A (en) * | 2015-04-29 | 2016-11-09 | 联发科技股份有限公司 | Antenna system, harmonics restraint element and radio-frequency unit |
| CN209659305U (en) * | 2019-05-14 | 2019-11-19 | 云南电网有限责任公司带电作业分公司 | A kind of RFID system of high channel filtering |
-
2019
- 2019-05-14 CN CN201910396209.7A patent/CN110086509A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070024864A1 (en) * | 2005-07-28 | 2007-02-01 | Nuflare Technology, Inc. | Position measurement apparatus and method and pattern forming apparatus and writing method |
| CN1937427A (en) * | 2005-09-22 | 2007-03-28 | 株式会社泛泰 | Mobile communication terminal having rfid reader and communicating method thereof |
| CN201017327Y (en) * | 2007-04-05 | 2008-02-06 | 田靖 | Wireless radio frequency recognizing card reading device |
| CN101916896A (en) * | 2010-07-02 | 2010-12-15 | 中国电子科技集团公司第七研究所 | Radio-frequency signal coupler |
| CN103353544A (en) * | 2012-06-15 | 2013-10-16 | 杭州祺来电子有限公司 | Shunt linear isolating circuit device |
| CN203788272U (en) * | 2014-01-23 | 2014-08-20 | 合肥安佛电子技术有限公司 | RM100 receiver front-end assembly module |
| CN104392193A (en) * | 2014-11-12 | 2015-03-04 | 广州中大微电子有限公司 | Card reader and method for filtering received signals of RFID card reader |
| CN104467888A (en) * | 2014-12-31 | 2015-03-25 | 陕西烽火电子股份有限公司 | Multi-channel shortwave receiving device |
| CN106099370A (en) * | 2015-04-29 | 2016-11-09 | 联发科技股份有限公司 | Antenna system, harmonics restraint element and radio-frequency unit |
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Application publication date: 20190802 |