CN108052852A - A kind of match circuit of high frequency antenna - Google Patents
A kind of match circuit of high frequency antenna Download PDFInfo
- Publication number
- CN108052852A CN108052852A CN201711362332.4A CN201711362332A CN108052852A CN 108052852 A CN108052852 A CN 108052852A CN 201711362332 A CN201711362332 A CN 201711362332A CN 108052852 A CN108052852 A CN 108052852A
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- capacitance
- circuit
- match
- magnetic transformers
- match circuit
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 1
- 238000010923 batch production Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation 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
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10346—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the far field type, e.g. HF types or dipoles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Details Of Aerials (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The invention discloses a kind of match circuits of high frequency antenna, including interface circuit, match circuit, magnetic transformers, uncoupling circuit, difference channel and antenna match plate, 1, the 4 pins access match circuit of the magnetic transformers, match circuit is the importation of magnetic transformers, and match circuit 11 is made of capacitance C1, capacitance C2, capacitance C3 and capacitance C4；The capacitance C3 and C4 is connected in parallel, and one end of capacitance C3 and C4 are connected on No. 1 pin of magnetic transformers.The match circuit of this high frequency antenna, integral frame is novel, can adjust out many match parameters, reduces the loss of signal, improves efficiency, further improves antenna performance, reduces antenna cost, facilitates batch production；It realizes the matching of high-power high-frequency antenna, on the premise of meeting industry environment requirement, improves the operating frequency range of match circuit, circuit design is convenient for assembly, convenient for batch production, and ensures the uniformity of batch and by property.
Description
Technical field
The present invention relates to short-distance wireless communication equipment application technical fields, are specially a kind of match circuit of high frequency antenna.
Background technology
Since 2004, with RFID (Radio Frequency Identification) the relevant projects of technology
It applies and gushes out on each media are continuous now.Technology applications of the RFID in terms of gate inhibition is also commonplace；RFID is a kind of non-
The automatic identification technology of contact, it is by radiofrequency signal automatic identification target object and obtains related data, identification work without
Palpus manual intervention, is operable under various environment.RFID technique can identify multiple labels simultaneously, swift and convenient to operate；RIFD
There are following three big features；It is for identifying a type objects rather than bar code 1. each object can be identified；It 2. can be non-contact
Multiple objects are distinguished simultaneously at a distance, and bar code can only singly be distinguished in very near distance；3. it deposits
The information content of storage is very big.
The content of the invention
It is an object of the invention to provide a kind of match circuits of high frequency antenna, realize the matching of high-power high-frequency antenna,
On the premise of meeting industry environment requirement, the operating frequency range of match circuit is improved, circuit design is convenient for assembly, convenient for criticizing
Amount production, and ensure the uniformity of batch and by property, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical solution：A kind of match circuit of high frequency antenna, including interface
Circuit, match circuit, magnetic transformers, uncoupling circuit, difference channel and antenna match plate, 1, the 4 of the magnetic transformers
Pin accesses match circuit, and match circuit is the importation of magnetic transformers, and match circuit 11 is by capacitance C1, capacitance C2, electricity
Hold C3 and capacitance C4 compositions；The capacitance C3 and C4 is connected in parallel, and one end of capacitance C3 and C4 are connected to No. 1 of magnetic transformers
On pin, capacitance C1 and C2 phase simultaneously connect, and the common port of capacitance C3 and C4 are connected with the common port of capacitance C1 and C2, capacitance C1
It is connected with another common port of C2 with No. 4 pins of magnetic transformers, collectively forms the ground terminal of match circuit, interface circuit connects
It is connected on the both ends of capacitance C1；2,3 pins of the magnetic transformers are hanging, 5, the 8 pin access differential circuits of magnetic transformers,
The output par, c of magnetic transformers is formed, 8,7 pins of magnetic transformers export for the right way, and 6,5 pins are that negative road exports；It is described
Uncoupling circuit is formed by capacitance C5 and C6 are parallel with one another, and the both ends of capacitance C5 and C6 are connected to the 6 of magnetic transformers, 7
On pin, shunt capacitance C7 and C8 between 5,8 pins of magnetic transformers；The differential electrical routing capacitance C12, capacitance C13, electricity
Hold C14, capacitance C15, capacitance C16 and capacitance C17 compositions, capacitance C12 and capacitance C13 to be in series, be connected in parallel on magnetic transformers'
5th, between 8 pins；The capacitance C14, capacitance C15, capacitance C16 and capacitance C17 form capacitance bridge, and the common port of capacitance bridge passes through
Copper ground connection is applied, the Same Name of Ends of capacitance C14 and C16 are connected on number pin of magnetic transformers, the Same Name of Ends of capacitance C15 and C17
It is connected on number pin of magnetic transformers.
Preferably, the magnetic transformers are welded on using reflow soldering process on antenna match plate.
Preferably, the antenna match plate be printed circuit board, the ink of surface spraying green, antenna match plate use
Apply Copper treatment.
Preferably, the capacitance C13 is tunable capacitor, and the cathode of one end connection difference channel of capacitance C13 exports.
Preferably, the interface circuit is by the way of SMA sockets and radio frequency aperture lines fishing line.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) match circuit of this high frequency antenna, magnetic transformers are welded on antenna match plate, complete using reflow soldering process
Into substituting traditional manual welding, improve work efficiency so that the more smooth beauty of welding of magnetic transformers；Antenna
Matching board is printed circuit board, and production cost is low, the ink of surface spraying green, has antioxidation, can during long-time service
It is aoxidized with the deposited copper for preventing antenna match intralamellar part, antenna match plate adds the thickness of antenna match plate using Copper treatment is applied
Degree prevents antenna match plate from deforming, makes its installation more safe and reliable；Capacitance C13 is tunable capacitor so that of high frequency antenna
Subtle adjustment can be carried out again according to different environment with circuit, and the cathode of one end connection difference channel of capacitance C13 is defeated
Go out, which can be matched to playing the role of certain uncoupling between the signal wire of the positive and negative two paths of signals of output；
Interface circuit has been compatible with the two ways by the way of SMA sockets and radio frequency aperture lines fishing line, improves the anti-of interface circuit
Electromagnetic interference capability.
(2) match circuit of this high frequency antenna, integral frame is novel, can adjust out many match parameters, reduces letter
Number loss, improve efficiency, further improve antenna performance, reduce antenna cost, facilitate batch production；Magnetic transformers integrate
RFID technique, by radiofrequency signal automatic identification target object and obtains related data, and identification work, can without manual intervention
It works under various environment, can also identify multiple labels simultaneously, it is swift and convenient to operate；Realize of high-power high-frequency antenna
Match somebody with somebody, on the premise of meeting industry environment requirement, improve the operating frequency range of match circuit, circuit design is convenient for assembly, just
In batch production, and ensure the uniformity of batch and by property.
Description of the drawings
Fig. 1 is the high frequency matching disc circuit diagram of the present invention；
Fig. 2 is the antenna match plate schematic diagram of the present invention.
In figure：1 interface circuit, 11 match circuits, 2 magnetic transformers, 21 uncoupling circuits, 22 difference channels, 221 capacitances
Bridge, 3 antenna match plates.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of match circuit of high frequency antenna, including interface electricity
Road 1, match circuit 11, magnetic transformers 2, uncoupling circuit 21, difference channel 22 and antenna match plate 3, magnetic transformers 2 collect
Into RFID technique, by radiofrequency signal automatic identification target object and obtain related data, identification work without manual intervention,
It is operable under various environment, can also identify multiple labels simultaneously, it is swift and convenient to operate；1,4 pins of magnetic transformers 2 connect
Enter match circuit 11, match circuit 11 is the importation of magnetic transformers 2, and match circuit 11 is by capacitance C1, capacitance C2, capacitance
C3 and capacitance C4 compositions；Magnetic transformers 2 are welded on antenna match plate 3, are completed using reflow soldering process, substitute traditional hand
Work is welded, and is improved work efficiency so that the more smooth beauty of welding of magnetic transformers 2；Capacitance C3 and C4 are connected in parallel, electricity
The one end for holding C3 and C4 is connected on No. 1 pin of magnetic transformers 2, and capacitance C1 and C2 phase simultaneously connect, the public affairs of capacitance C3 and C4
End is connected with the common port of capacitance C1 and C2 altogether, and another common port of capacitance C1 and C2 and No. 4 pins of magnetic transformers 2 connect
It connects, collectively forms the ground terminal of match circuit 11, interface circuit 1 is connected to the both ends of capacitance C1；Interface circuit 1 is inserted using SMA
Seat and the mode of radio frequency aperture lines fishing line, have been compatible with the two ways, have improved the anti-electromagnetic interference capability of interface circuit 1；Magnetic
Property converter 22,3 pins it is hanging, 5, the 8 pin access differential circuits 22 of magnetic transformers 2, composition magnetic transformers 2 it is defeated
Go out part, 8,7 pins of magnetic transformers 2 export for the right way, and 6,5 pins are that negative road exports；Uncoupling circuit 21 is by capacitance C5
With C6 is parallel with one another forms, the both ends of capacitance C5 and C6 are connected on the 6 of magnetic transformers 2,7 pins, and magnetic transformers 2
5,8 pins between shunt capacitance C7 and C8；It realizes the matching of high-power high-frequency antenna, meets the premise of industry environment requirement
Under, the operating frequency range of match circuit is improved, circuit design is convenient for assembly, convenient for batch production, and ensures the one of batch
Cause property and by property；Difference channel 22 is made of capacitance C12, capacitance C13, capacitance C14, capacitance C15, capacitance C16 and capacitance C17,
Capacitance C12 and capacitance C13 are in series, and are connected in parallel between 5,8 pins of magnetic transformers 2；Capacitance C13 is tunable capacitor so that
The match circuit of high frequency antenna can carry out subtle adjustment, one end connection difference of capacitance C13 again according to different environment
The cathode output of circuit 22, which can be to playing certain decoupling between the signal wire of the positive and negative two paths of signals of output
Close matched effect；Capacitance C14, capacitance C15, capacitance C16 and capacitance C17 form capacitance bridge 221, the common port of capacitance bridge 221
It is grounded by applying copper, the Same Name of Ends of capacitance C14 and C16 are connected on No. 8 pins of magnetic transformers 2, capacitance C15's and C17
Same Name of Ends is connected on No. 5 pins of magnetic transformers 2；Lines matching plate 3 is printed circuit board, and production cost is low, surface spray
The ink of green is applied, has antioxidation, during long-time service, can prevent that the deposited copper inside antenna match plate 3 from being aoxidized, day
Lines matching plate 3 adds the thickness of antenna match plate 3, prevents antenna match plate 3 from deforming using Copper treatment is applied, and makes its installation more
Add safe and reliable；Integral frame is novel, can adjust out many match parameters, reduces the loss of signal, efficiency is improved, into one
Step improves antenna performance, reduces antenna cost, facilitates batch production.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of match circuit of high frequency antenna, including interface circuit (1), match circuit (11), magnetic transformers (2), decoupling
Close circuit (21), difference channel (22) and antenna match plate (3), it is characterised in that：1,4 pins of the magnetic transformers (2)
Access match circuit (11), match circuit (11) be magnetic transformers (2) importation, match circuit (11) by capacitance C1,
Capacitance C2, capacitance C3 and capacitance C4 compositions；The capacitance (C3 and C4) is connected in parallel, and one end of capacitance (C3 and C4) is connected to magnetic
Property converter (2) No. 1 pin on, capacitance (C1 and C2) mutually simultaneously connects, the common port of capacitance (C3 and C4) and capacitance (C1 and
C2 common port) is connected, and another common port of capacitance (C1 and C2) is connected with No. 4 pins of magnetic transformers (2), common structure
Into the ground terminal of match circuit (11), interface circuit (1) is connected to the both ends of capacitance C1；2,3 pipes of the magnetic transformers (2)
Foot is hanging, 5, the 8 pin access differential circuits (22) of magnetic transformers (2), the output par, c of composition magnetic transformers (2), magnetic
Property converter (2) 8,7 pins be right way output, 6,5 pins are that negative road exports；The uncoupling circuit (21) is by capacitance (C5
And C6) it is parallel with one another form, the both ends of capacitance (C5 and C6) are connected on 6,7 pins of magnetic transformers (2), magnetism become
Shunt capacitance (C7 and C8) between 5,8 pins of parallel operation (2)；The difference channel (22) is by capacitance C12, capacitance C13, capacitance
C14, capacitance C15, capacitance C16 and capacitance C17 compositions, capacitance (C12 and capacitance C13) are in series, and are connected in parallel on magnetic transformers (2)
5,8 pins between；The capacitance C14, capacitance C15, capacitance C16 and capacitance C17 form capacitance bridge (221), capacitance bridge (221)
Common port be grounded by applying copper, the Same Name of Ends of capacitance (C14 and C16) is connected on No. 8 pins of magnetic transformers (2), electricity
The Same Name of Ends for holding (C15 and C17) is connected on No. 5 pins of magnetic transformers (2).
2. a kind of match circuit of high frequency antenna according to claim 1, it is characterised in that：The magnetic transformers (2)
It is welded on using reflow soldering process on antenna match plate (3).
3. a kind of match circuit of high frequency antenna according to claim 1, it is characterised in that：The antenna match plate (3)
For printed circuit board, the ink of surface spraying green, antenna match plate (3) is by applying Copper treatment.
4. a kind of match circuit of high frequency antenna according to claim 1, it is characterised in that：The capacitance C13 is adjustable
Capacitance, the cathode output of one end connection difference channel of capacitance C13.
5. a kind of match circuit of high frequency antenna according to claim 1, it is characterised in that：The interface circuit (1) is adopted
With SMA sockets and the mode of radio frequency aperture lines fishing line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711362332.4A CN108052852B (en) | 2017-12-18 | 2017-12-18 | Matching circuit of high-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711362332.4A CN108052852B (en) | 2017-12-18 | 2017-12-18 | Matching circuit of high-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108052852A true CN108052852A (en) | 2018-05-18 |
| CN108052852B CN108052852B (en) | 2021-01-29 |
Family
ID=62133378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711362332.4A Active CN108052852B (en) | 2017-12-18 | 2017-12-18 | Matching circuit of high-frequency antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN108052852B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174142B2 (en) * | 2004-05-12 | 2007-02-06 | Denso Corporation | Receiver having a built-in antenna and method of impedance-matching for the same |
| CN201830246U (en) * | 2010-10-19 | 2011-05-11 | 广州市索爱数码科技有限公司 | 3G (third generation telecommunication) mobile terminal antenna matching circuit |
| CN103050791A (en) * | 2011-10-15 | 2013-04-17 | 成都锐奕信息技术有限公司 | Circuit with multi-antenna compatibility |
| CN103095328A (en) * | 2011-10-31 | 2013-05-08 | 成都高新区尼玛电子产品外观设计工作室 | Radio frequency patch matching design circuit |
| CN203574105U (en) * | 2013-12-07 | 2014-04-30 | 威海北洋电气集团股份有限公司 | Decoupling device for radio frequency antenna |
| US8903332B2 (en) * | 2009-06-23 | 2014-12-02 | Silicon Laboratories Inc. | Circuit device and method of coupling to an antenna |
| US9595980B2 (en) * | 2014-10-17 | 2017-03-14 | Electronics And Telecommunications Research Institute | Oscillation circuit and transmitter including the same |
-
2017
- 2017-12-18 CN CN201711362332.4A patent/CN108052852B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174142B2 (en) * | 2004-05-12 | 2007-02-06 | Denso Corporation | Receiver having a built-in antenna and method of impedance-matching for the same |
| US8903332B2 (en) * | 2009-06-23 | 2014-12-02 | Silicon Laboratories Inc. | Circuit device and method of coupling to an antenna |
| CN201830246U (en) * | 2010-10-19 | 2011-05-11 | 广州市索爱数码科技有限公司 | 3G (third generation telecommunication) mobile terminal antenna matching circuit |
| CN103050791A (en) * | 2011-10-15 | 2013-04-17 | 成都锐奕信息技术有限公司 | Circuit with multi-antenna compatibility |
| CN103095328A (en) * | 2011-10-31 | 2013-05-08 | 成都高新区尼玛电子产品外观设计工作室 | Radio frequency patch matching design circuit |
| CN203574105U (en) * | 2013-12-07 | 2014-04-30 | 威海北洋电气集团股份有限公司 | Decoupling device for radio frequency antenna |
| US9595980B2 (en) * | 2014-10-17 | 2017-03-14 | Electronics And Telecommunications Research Institute | Oscillation circuit and transmitter including the same |
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| Publication number | Publication date |
|---|---|
| CN108052852B (en) | 2021-01-29 |
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Denomination of invention: A high-frequency antenna matching circuit Effective date of registration: 20220831 Granted publication date: 20210129 Pledgee: Tianjin SME Credit Financing Guarantee Center Pledgor: TIANJIN KCHT INFORMATION TECHNOLOGY CO.,LTD. Registration number: Y2022120000050 |
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