CN103606003B - The automatic off resonance mu balanced circuit of radio frequency identification label chip - Google Patents
The automatic off resonance mu balanced circuit of radio frequency identification label chip Download PDFInfo
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- CN103606003B CN103606003B CN201310652366.2A CN201310652366A CN103606003B CN 103606003 B CN103606003 B CN 103606003B CN 201310652366 A CN201310652366 A CN 201310652366A CN 103606003 B CN103606003 B CN 103606003B
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Abstract
The automatic off resonance mu balanced circuit of a kind of radio frequency identification label chip, comprise antenna, the outer matching network of sheet, rectification and power supply generation module, reception and sending module, digital baseband control module and storage unit, its feature is to add matching network in automatic off resonance sheet between the outer matching network of described sheet and described rectification and power supply generation module, and in this automatic off resonance sheet, matching network is made up of voltage feedback circuit, voltage-controlled impedance transformation unit and voltage cut-out first metal-oxide-semiconductor.The present invention can matching network parameter in adjustment sheet on one's own initiative, stable required operating voltage range.
Description
Technical field
The present invention relates to integrated circuit.The particularly automatic off resonance mu balanced circuit of a kind of radio frequency identification label chip.
Background technology
Along with the develop rapidly of microelectric technique, CMOS technology can manufacture the chip being applied to microwave region, and radio circuit can be integrated on the chip of large scale digital circuit.More broad application will be opened with the low-cost wireless system of CMOS technology manufacture.Radio-frequency (RF) tag is exactly an extraordinary application of prospect.
When within 1973, bar code is pushed out, its inventor once foretold: after 25 years, carried out alternative bar code by there being a kind of new technology.Now, radio-frequency (RF) tag has been gone in face of people.It is not only the simple substitute of bar code, more can the up-to-date information technology such as comprehensive wireless communication, microelectronics, internet, carrying out carrying out whole process supervision management from producing, selling and uying even recycling to all national products, greatly improving the running efficiency of entire society.
The working frequency range of radio-frequency (RF) tag comprises, and 1: low frequency tags frequency of operation is at 30kHz-300kHz, and typical frequency of operation has: 125kHz, 133kHz.2: high-frequency label frequency of operation is at 3MHz-30MHz, and typical frequency of operation is 13.56MHz.3: ultrahigh-frequency tag frequency of operation is greater than 400MHz, typical operating frequency is 915MHz, 2.45GHz, 5.8GHz.
A complete radio-frequency (RF) tag generally includes: antenna 1, the outer matching network 2 of sheet, and rectification and power supply generation module 3, receive and send 4, digital baseband block and storage unit 5.
Summary of the invention
The object of the present invention is to provide the automatic off resonance mu balanced circuit of a kind of radio frequency identification label chip, this circuit can matching network parameter in adjustment sheet on one's own initiative, stable required operating voltage range.
Technical solution of the present invention is as follows:
The automatic off resonance mu balanced circuit of a kind of radio frequency identification label chip, comprise antenna, the outer matching network of sheet, rectification and power supply generation module, reception and sending module, digital baseband control module and storage unit, its feature is to add matching network in automatic off resonance sheet between the outer matching network of described sheet and described rectification and power supply generation module, and in this automatic off resonance sheet, matching network is made up of voltage feedback circuit, voltage-controlled impedance transformation unit and voltage cut-out first metal-oxide-semiconductor:
Described voltage feedback circuit, by resistance, second metal-oxide-semiconductor, 3rd metal-oxide-semiconductor, 4th metal-oxide-semiconductor is formed, the rectification described in one termination of described resistance and the voltage output end of power supply generation module, the drain electrode of second metal-oxide-semiconductor described in another termination of described resistance, the grid of the second metal-oxide-semiconductor is connected with drain electrode, the grid of the 3rd metal-oxide-semiconductor is connected with drain electrode, the grid of the 4th described metal-oxide-semiconductor is connected with drain electrode, the source electrode of the second described metal-oxide-semiconductor connects the drain electrode of the 3rd metal-oxide-semiconductor, the source electrode of the 3rd metal-oxide-semiconductor connects the drain electrode of the 4th metal-oxide-semiconductor, the source ground of the 4th metal-oxide-semiconductor, the grid of the second described metal-oxide-semiconductor is connected with the grid of the first described metal-oxide-semiconductor,
Described voltage-controlled impedance transformation unit is composed in parallel by variable resistor and variable capacitance, one end ground connection of described variable resistor and variable capacitance, the source electrode of the first metal-oxide-semiconductor described in another termination;
The drain electrode of the first described metal-oxide-semiconductor connects described antenna through the outer matching network of described sheet.
Technique effect of the present invention is as follows:
The automatic off resonance mu balanced circuit of radio frequency identification label chip of the present invention can detect the voltage of rectification and the generation of power supply generation module automatically, adjusts matching network matching parameter in automatic off resonance sheet, realizes stable required operating voltage.
Accompanying drawing explanation
Fig. 1 is the traditional structure of radio frequency recognizing electronic label chip
Fig. 2 is radio frequency identification label chip of the present invention automatic off resonance voltage regulator circuit structure figure
The structural drawing of matching network 6 in the automatic off resonance sheet of Fig. 3 the present invention
The structural drawing of voltage feedback circuit 7 in Fig. 4 the present invention
The structural drawing of the voltage-controlled impedance transformation unit 8 of Fig. 5
Matching network 6 circuit specific embodiment schematic diagram in the automatic off resonance sheet of Fig. 6 the present invention
Embodiment
Further illustrate the present invention below by embodiment, but should not limit the scope of the invention with this.
First refer to Fig. 2, as seen from the figure, radio frequency identification label chip of the present invention automatic off resonance mu balanced circuit increases matching network 6 in automatic off resonance sheet at the structural drawing 1 of existing radio frequency recognizing electronic label chip to form, Fig. 3 is matching network 6 structural drawing in the automatic off resonance sheet of the present invention, and in described automatic off resonance sheet, matching network 6 is made up of voltage feedback circuit 7, voltage-controlled impedance transformation unit 8 and voltage cut-out metal-oxide-semiconductor M1.
As shown in Figure 4, by resistance R1, dividing potential drop metal-oxide-semiconductor M2, M3, M4 form described voltage feedback circuit 7 structural drawing, being input as the supply voltage of rectification and power supply generation module 3 generation, exporting as exporting control voltage.
Described voltage-controlled impedance transformation unit 8 structural drawing as shown in Figure 5, consists of certain connected mode voltage-controlled variable resistance R2 and VVC voltage variable capacitance C1.
Fig. 6 is the circuit diagram of matching network 6 one embodiments in the automatic off resonance sheet of the present invention, in figure 6, the voltage feedback circuit of resistance R1, M2, M3, M4 composition, monitor the voltage of rectification and power supply generation module 3 generation and provide bias voltage to the grid of metal-oxide-semiconductor M1, control voltage-controlled impedance transformation unit variable resistor R2, variable capacitance C1, the resistance value of automatic change R2, C1, the drain electrode of the first metal-oxide-semiconductor M1 connects antenna end.
The automatic off resonance mu balanced circuit of radio frequency identification label chip of the present invention, comprise antenna 1, the outer matching network 2 of sheet, rectification and power supply generation module 3, receive and sending module 4, digital baseband control module and storage unit 5, between the outer matching network 2 of described sheet and described rectification and power supply generation module 3, add matching network 6 in automatic off resonance sheet, in this automatic off resonance sheet, matching network 6 is made up of voltage feedback circuit 7, voltage-controlled impedance transformation unit 8 and voltage cut-out first metal-oxide-semiconductor M1:
Described voltage feedback circuit 7, by resistance R1, second metal-oxide-semiconductor M2, 3rd metal-oxide-semiconductor M3, 4th metal-oxide-semiconductor M4 is formed, the rectification described in one termination of described resistance R1 and the voltage output end of power supply generation module 3, the drain electrode of the second metal-oxide-semiconductor M2 described in another termination of described resistance R1, the grid of the second metal-oxide-semiconductor M2 is connected with drain electrode, the grid of the 3rd metal-oxide-semiconductor M3 is connected with drain electrode, the grid of the 4th described metal-oxide-semiconductor M4 is connected with drain electrode, the source electrode of the second described metal-oxide-semiconductor M2 connects the drain electrode of the 3rd metal-oxide-semiconductor M3, the source electrode of the 3rd metal-oxide-semiconductor M3 connects the drain electrode of the 4th metal-oxide-semiconductor M4, the source ground of the 4th metal-oxide-semiconductor M4, the grid of the second described metal-oxide-semiconductor M2 is connected with the grid of the first described metal-oxide-semiconductor M1,
Described voltage-controlled impedance transformation unit 8 is composed in parallel by variable resistor R2 and variable capacitance C1, described variable resistor R2 and one end ground connection of variable capacitance C1, and the source electrode of the first metal-oxide-semiconductor M1 described in another termination is connected;
The drain electrode of the first described metal-oxide-semiconductor M1 connects described antenna 1 through the outer matching network 2 of described sheet.
Experiment shows, circuit of the present invention can change the impedance operator of automatic off resonance chip antenna port automatically, reaches the effect of stable required operating voltage.
Claims (1)
1. the automatic off resonance mu balanced circuit of radio frequency identification label chip, comprise antenna (1), the outer matching network (2) of sheet, rectification and power supply generation module (3), receive and sending module (4), digital baseband control module and storage unit (5), it is characterized in that adding matching network (6) in automatic off resonance sheet between the outer matching network (2) of described sheet and described rectification and power supply generation module (3), in this automatic off resonance sheet, matching network (6) is by voltage feedback circuit (7), voltage-controlled impedance transformation unit (8) and voltage cut-out first metal-oxide-semiconductor (M1) are formed:
Described voltage feedback circuit (7), by resistance (R1), second metal-oxide-semiconductor (M2), 3rd metal-oxide-semiconductor (M3), 4th metal-oxide-semiconductor (M4) is formed, the rectification described in one termination of described resistance (R1) and the voltage output end of power supply generation module (3), the drain electrode of second metal-oxide-semiconductor (M2) described in another termination of described resistance (R1), the grid of the second metal-oxide-semiconductor (M2) is connected with drain electrode, the grid of the 3rd metal-oxide-semiconductor (M3) is connected with drain electrode, the grid of the 4th described metal-oxide-semiconductor (M4) is connected with drain electrode, the source electrode of described the second metal-oxide-semiconductor (M2) connects the drain electrode of the 3rd metal-oxide-semiconductor (M3), the source electrode of the 3rd metal-oxide-semiconductor (M3) connects the drain electrode of the 4th metal-oxide-semiconductor (M4), the source ground of the 4th metal-oxide-semiconductor (M4), the grid of described the second metal-oxide-semiconductor (M2) is connected with the grid of described the first metal-oxide-semiconductor (M1),
Described voltage-controlled impedance transformation unit (8) is composed in parallel by variable resistor (R2) and variable capacitance (C1), described variable resistor (R2) and one end ground connection of variable capacitance (C1), the source electrode of the first metal-oxide-semiconductor (M1) described in another termination;
The drain electrode of described the first metal-oxide-semiconductor (M1) connects described antenna (1) through the outer matching network (2) of described sheet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310652366.2A CN103606003B (en) | 2013-12-05 | 2013-12-05 | The automatic off resonance mu balanced circuit of radio frequency identification label chip |
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| CN201310652366.2A CN103606003B (en) | 2013-12-05 | 2013-12-05 | The automatic off resonance mu balanced circuit of radio frequency identification label chip |
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| CN103606003A CN103606003A (en) | 2014-02-26 |
| CN103606003B true CN103606003B (en) | 2016-04-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103840853B (en) * | 2014-03-28 | 2016-02-24 | 上海坤锐电子科技有限公司 | Be applicable to the automatic impedance matching circuit of radio-frequency SIM card |
| CN107516054B (en) * | 2016-06-17 | 2021-01-15 | 南京理工大学 | Radio frequency identification passive wireless resonance sensor structure and system capable of being networked at will |
| CN113420861B (en) * | 2021-06-02 | 2023-02-07 | 西安电子科技大学 | Radio frequency passive tag capable of activating self-tuning for multiple times in real time and method |
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| US7167090B1 (en) * | 2004-09-17 | 2007-01-23 | Massachusetts Institute Of Technology | Far-field RF power extraction circuits and systems |
| US7639199B2 (en) * | 2006-09-22 | 2009-12-29 | Broadcom Corporation | Programmable antenna with programmable impedance matching and methods for use therewith |
| CN201374070Y (en) * | 2008-12-19 | 2009-12-30 | 深圳市远望谷信息技术股份有限公司 | Ultrahigh frequency RFID reader module |
| CN102456152A (en) * | 2010-11-01 | 2012-05-16 | 上海华虹Nec电子有限公司 | Power generation circuit for electronic tag of RFID (radio frequency identification) system |
| CN103020675A (en) * | 2012-11-29 | 2013-04-03 | 中国电子科技集团公司第五十二研究所 | Ultrahigh-frequency RFID (radio frequency identification device) reading and writing module based on self-adaptive tuning technology of antenna |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7167090B1 (en) * | 2004-09-17 | 2007-01-23 | Massachusetts Institute Of Technology | Far-field RF power extraction circuits and systems |
| US7639199B2 (en) * | 2006-09-22 | 2009-12-29 | Broadcom Corporation | Programmable antenna with programmable impedance matching and methods for use therewith |
| CN201374070Y (en) * | 2008-12-19 | 2009-12-30 | 深圳市远望谷信息技术股份有限公司 | Ultrahigh frequency RFID reader module |
| CN102456152A (en) * | 2010-11-01 | 2012-05-16 | 上海华虹Nec电子有限公司 | Power generation circuit for electronic tag of RFID (radio frequency identification) system |
| CN103020675A (en) * | 2012-11-29 | 2013-04-03 | 中国电子科技集团公司第五十二研究所 | Ultrahigh-frequency RFID (radio frequency identification device) reading and writing module based on self-adaptive tuning technology of antenna |
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| CN103606003A (en) | 2014-02-26 |
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