CN109975719A - A kind of sampling apparatus with shielding case of radio-frequency power supply - Google Patents
A kind of sampling apparatus with shielding case of radio-frequency power supply Download PDFInfo
- Publication number
- CN109975719A CN109975719A CN201711403365.9A CN201711403365A CN109975719A CN 109975719 A CN109975719 A CN 109975719A CN 201711403365 A CN201711403365 A CN 201711403365A CN 109975719 A CN109975719 A CN 109975719A
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- CN
- China
- Prior art keywords
- filter circuit
- multiplier
- pcb board
- directional coupler
- radio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of sampling apparatuses with shielding case of radio-frequency power supply, for 13.56MHz radio-frequency power supply, including pcb board, the pcb board front is equipped with filter circuit, multiplier, install metal shielding outside the filter circuit, multiplier additional, the pcb board back side is equipped with directional coupler, and the coupled output of directional coupler is aligned with filter circuit.Filter circuit and multiplier are mounted on pcb board front by the present invention, and install metal shielding additional on it, eliminate interference of the outer signals to multiplier.Directional coupler is mounted on the pcb board back side, the coupling output line of directional coupler is made to be sent to filter circuit input terminal directly through pcb board, shortens sampled signal line length, reduces external interference.
Description
Technical field
The present invention relates to radio-frequency power supply field more particularly to a kind of sampling apparatuses with shielding case of radio-frequency power supply.
Background technique
In 13.56MHz radio-frequency power supply, in order to improve the control precision of output power, need to carry out essence to output power
Really sampling, control circuit could be allowed to calculate in closed-loop control in this way, and more accurate, error is smaller, output accuracy is higher.General
It in sample circuit, is first sampled to obtain power output end voltage signal with directional coupler, is sent to multiplier later using filtering
Operation is finally given to control circuit.Due to high-power RF power supply transmission when can by transmission line into space radiated radio frequency (RF)
Signal, sample circuit and multiplier are highly susceptible to the interference of these radiofrequency signals in open environment, so as to cause sampling
Precision reduces.
Summary of the invention
The object of the present invention is to provide a kind of anti-interference, high-precision for 13.56MHz radio-frequency power supply sampling apparatus.
For achieving the above object, the technical scheme is that a kind of sampling cartridge with shielding case of radio-frequency power supply
It sets, is used for 13.56MHz radio-frequency power supply, including pcb board, the pcb board front are equipped with filter circuit, multiplier, the filtering
Metal shielding is installed additional outside circuit, multiplier, and the pcb board back side is equipped with directional coupler；The coupling of the directional coupler
Output end is closed to be aligned with filter circuit；
The filter circuit includes the first filter circuit, the second filter circuit, and multiplier includes the first multiplier, the second multiplication
Device；
The directional coupler input terminal is connected with input port, and directional coupler output end is connected with output port；It is described fixed
It is connected with the first output line to the first coupled output of coupler, the first output line passes through pcb board and is connected to the first filter circuit,
First filter circuit connects the first multiplier, and the first multiplier is connected to interface circuit；The directional coupler second couples defeated
Outlet is connected with the second output line, and the second output line passes through pcb board and is connected to the second filter circuit, the second filter circuit connection the
Paired multiplier, the second multiplier are connected to interface circuit；The interface circuit connects control circuit；The input port, output
Port is grounded respectively.
The beneficial effects of the present invention are:
Filter circuit and multiplier are mounted on pcb board front by the present invention, and install metal shielding additional on it, eliminate extraneous letter
Interference number to multiplier.Directional coupler is mounted on the pcb board back side, make the coupling output line of directional coupler directly through
Pcb board is sent to filter circuit input terminal.Sampled signal line length can be shortened in this way, reduce external interference.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is circuit topology figure of the present invention.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
As shown in Figure 1, a kind of sampling apparatus with shielding case for 13.56MHz radio-frequency power supply, which is characterized in that packet
Pcb board 1 is included, 1 front of pcb board is equipped with filter circuit, multiplier, installs metal screen outside the filter circuit, multiplier additional
Shell 2 is covered, 1 back side of pcb board is equipped with directional coupler 3.The coupled output of directional coupler is aligned with filter circuit, coupling
It closes output line and is sent to filter circuit input terminal directly through pcb board 1, shorten sampled signal line length, reduce external interference.
The filter circuit includes the first filter circuit 4, the second filter circuit 5, and multiplier includes the first multiplier 6, the
Paired multiplier 7.
3 input terminal of directional coupler is connected with input port IN, and 3 output end of directional coupler is connected with output port
OUT；3 first coupled output of directional coupler is connected with the first output line 8, and the first output line 8 is connected to across pcb board
First filter circuit 4, the first filter circuit 4 connect the first multiplier 6, and the first multiplier 6 is connected to interface circuit 9；It is described fixed
It is connected with the second output line 10 to 3 second coupled output of coupler, the second output line 10 passes through pcb board 1 and is connected to the second filter
Wave circuit 5, the second filter circuit 5 connect the second multiplier 7, and the second multiplier 7 is connected to interface circuit 11；The interface circuit
11 connections control circuit (being not drawn into figure)；The input port IN, output port OUT are grounded GND respectively.
In radio-frequency power supply sampling apparatus there are mainly two types of extraneous interference, one is on the coupling output line of directional coupler
The interference signal received, another kind are the interference that multiplier signal input terminal receives.The design is by filter circuit and multiplication
Device is mounted on pcb board front, and installs metal shielding additional on it, eliminates interference of the outer signals to multiplier.Coupling will be oriented
Clutch is mounted on the pcb board back side, and the coupling output line of directional coupler is made to be sent to filter circuit input terminal directly through pcb board.
Sampled signal line length can be shortened in this way, reduce external interference.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (1)
1. a kind of sampling apparatus with shielding case of radio-frequency power supply is used for 13.56MHz radio-frequency power supply, which is characterized in that including
Pcb board, the pcb board front are equipped with filter circuit, multiplier, install metal shielding additional outside the filter circuit, multiplier,
The pcb board back side is equipped with directional coupler；The coupled output of the directional coupler is aligned with filter circuit；
The filter circuit includes the first filter circuit, the second filter circuit, and multiplier includes the first multiplier, the second multiplication
Device；
The directional coupler input terminal is connected with input port, and directional coupler output end is connected with output port；It is described fixed
It is connected with the first output line to coupler input, the first output line passes through pcb board and is connected to the first filter circuit, the first filtering
The first multiplier of circuit connection, the first multiplier are connected to interface circuit；It is defeated that the directional coupler output end is connected with second
Outlet, the second output line pass through pcb board and are connected to the second filter circuit, and the second filter circuit connects the second multiplier, and second multiplies
Musical instruments used in a Buddhist or Taoist mass is connected to interface circuit；The interface circuit connects control circuit；The input port, output port are grounded respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711403365.9A CN109975719A (en) | 2017-12-22 | 2017-12-22 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711403365.9A CN109975719A (en) | 2017-12-22 | 2017-12-22 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109975719A true CN109975719A (en) | 2019-07-05 |
Family
ID=67072077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711403365.9A Pending CN109975719A (en) | 2017-12-22 | 2017-12-22 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109975719A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020090263A (en) * | 2001-05-26 | 2002-12-02 | 주식회사 대경바스컴 | Rf power supply apparatus |
| TWM256683U (en) * | 2004-03-01 | 2005-02-01 | Uvat Technology Co Ltd | The device for the reduction of EMI induced by radio frequency source |
| CN201504173U (en) * | 2009-04-10 | 2010-06-09 | 中国地质大学（武汉） | Digital radio frequency power supply |
| CN202405408U (en) * | 2011-12-28 | 2012-08-29 | 上海烈龙电子科技发展有限公司 | 400 MHz antistatic multilayer shielding microstrip line directional coupler |
| CN102771046A (en) * | 2010-02-24 | 2012-11-07 | 住友电气工业株式会社 | Amplifying device, signal processing device, wireless communication device, connector mounting structure, and coaxial connector |
| CN202617070U (en) * | 2012-05-17 | 2012-12-19 | 常州瑞思杰尔电子科技有限公司 | Dual-output phase-shifting all-solid-state radio frequency power supply |
| CN103166179A (en) * | 2013-03-11 | 2013-06-19 | 深圳市安众电气有限公司 | Under-power protection circuit for radio-frequency power supply |
| CN104463281A (en) * | 2014-12-12 | 2015-03-25 | 上海上大鼎正软件股份有限公司 | Carrier jamming restraining device of radio frequency identification reader-writer |
| CN207650373U (en) * | 2017-12-22 | 2018-07-24 | 北京北广科技股份有限公司 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
-
2017
- 2017-12-22 CN CN201711403365.9A patent/CN109975719A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020090263A (en) * | 2001-05-26 | 2002-12-02 | 주식회사 대경바스컴 | Rf power supply apparatus |
| TWM256683U (en) * | 2004-03-01 | 2005-02-01 | Uvat Technology Co Ltd | The device for the reduction of EMI induced by radio frequency source |
| CN201504173U (en) * | 2009-04-10 | 2010-06-09 | 中国地质大学（武汉） | Digital radio frequency power supply |
| CN102771046A (en) * | 2010-02-24 | 2012-11-07 | 住友电气工业株式会社 | Amplifying device, signal processing device, wireless communication device, connector mounting structure, and coaxial connector |
| CN202405408U (en) * | 2011-12-28 | 2012-08-29 | 上海烈龙电子科技发展有限公司 | 400 MHz antistatic multilayer shielding microstrip line directional coupler |
| CN202617070U (en) * | 2012-05-17 | 2012-12-19 | 常州瑞思杰尔电子科技有限公司 | Dual-output phase-shifting all-solid-state radio frequency power supply |
| CN103166179A (en) * | 2013-03-11 | 2013-06-19 | 深圳市安众电气有限公司 | Under-power protection circuit for radio-frequency power supply |
| CN104463281A (en) * | 2014-12-12 | 2015-03-25 | 上海上大鼎正软件股份有限公司 | Carrier jamming restraining device of radio frequency identification reader-writer |
| CN207650373U (en) * | 2017-12-22 | 2018-07-24 | 北京北广科技股份有限公司 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200421 Address after: 100176 No. 8 Wenchang Avenue, Beijing economic and Technological Development Zone, Beijing, Daxing District Applicant after: BEIJING NAURA MICROELECTRONICS EQUIPMENT Co.,Ltd. Address before: 101318 No. 26, A District, Tianzhu Road, Tianzhu Airport Industrial Zone, Beijing, Shunyi District Applicant before: Beijing BBEF Science & Technology Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240710 Address after: 100176 4s01, 4th floor, building 1, No.8 courtyard, Wenchang Avenue, Beijing Economic and Technological Development Zone, Daxing District, Beijing Applicant after: Beijing Huacheng Electronics Co.,Ltd. Country or region after: China Address before: 100176 Beijing Daxing District Beijing economic and Technological Development Zone Wenchang Road 8 Applicant before: BEIJING NAURA MICROELECTRONICS EQUIPMENT Co.,Ltd. Country or region before: China |
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