CN108447651A - A kind of integrated variable turning ratio transformer of on piece - Google Patents
A kind of integrated variable turning ratio transformer of on piece Download PDFInfo
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- CN108447651A CN108447651A CN201810587935.2A CN201810587935A CN108447651A CN 108447651 A CN108447651 A CN 108447651A CN 201810587935 A CN201810587935 A CN 201810587935A CN 108447651 A CN108447651 A CN 108447651A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/12—Variable inductances or transformers of the signal type discontinuously variable, e.g. tapped
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The present invention relates to a kind of integrated variable turning ratio transformers of on piece, including two primary coil units, two switch units and primary coil unit, wherein A primary coil units connection rf inputs mouth anode and A switch unit input ports, the output port connection B switch units and B primary coil unit anodes of A switch units, B primary coil unit cathode connect B switch units, B switch unit input ports connect rf inputs mouth cathode, secondary coil anode and cathode are separately connected radio frequency output port anode and cathode, secondary coil unit exports radio-frequency input signals by electromagnetic coupling；Transformer turn ratio is controlled by A switch units and B switch units.Advantage：1）Transformer turn ratio can provide a variety of impedance variations, voltage transformation and current transformation and save device cost as needed.2）One secondary design can be used for a variety of applications, save time cost.3）It is at low cost, it has broad application prospects and is worth.
Description
Technical field
The present invention is a kind of integrated variable turning ratio transformer of on piece, belongs to technical field of integrated circuits.
Background technology
In radio circuit, impedance matching may be implemented in transformer, and the multiple functions such as power combing are the RF devices most wanted
One of part.
Traditional transformer device structure is as shown in Figure 1, its structure is made of primary coil series unit and secondary coil unit.
By the coupling between two coil units, it couples radio-frequency input signals to output port output.
Traditional transformer has the disadvantages that：In present mobile communication, operating mode is more and more, and traditional transformer
Turn ratio is fixed, and single situation is only applicable to, and different applicable cases are needed to redesign, or needs multiple transformers
To meet application, increase cost.
Invention content
Proposed by the present invention is a kind of integrated variable turning ratio transformer of on piece, and its object is in order to overcome traditional transformation
The deficiency that device the number of turns cannot be changed provides a kind of on piece integrated variable turning ratio transformer so that the turn ratio of transformer can be with
It is changed on demand, using flexible reduces cost.
Technical solution of the invention：A kind of integrated variable turning ratio transformer of on piece, including A primary coil units, A
Switch unit, B primary coil units, B switch units and secondary coil unit, the anode of wherein A primary coil units are connected to
The cathode of rf inputs mouth anode in+, A primary coil unit is connected to the i input ports of A switch units, A switch units
O1 output ports are connected to the o1 output ports of B switch units, and the o2 output ports of A switch units are connected to B primary coil lists
The anode of member, the cathode of B primary coil units are connected to the o2 output ports of B switch units, the i input ports of B switch units
It is connected to rf inputs mouth cathode in-, secondary coil anode is connected to radio frequency output port anode out+, secondary coil cathode
It is connected to radio frequency output port cathode out-, is existed between secondary coil unit and A primary coil units and B primary coil units
Radio-frequency input signals is coupled and is exported by electromagnetic coupling；Transformer turn ratio is controlled by A switch units and B switch units, at the beginning of A
The grade coil unit number of turns be M1, B primary coil unit number of turns be M2, the secondary coil unit number of turns is N1, it can be achieved that M1:N1 or
（M1+M2）:Two kinds of turning ratio transformers of N1.
Beneficial effects of the present invention：
（1）Transformer turn ratio can be varied as desired in, and provide a variety of impedance variations, voltage transformation and current transformation, can be with
A variety of use environments are coped with, device cost is saved.
（2）Traditional transformer a variety of in application, need the multiple transformers of respective design, and the present invention can be used for it is more
Kind application only once with design saves time cost.
（3）The present invention can be used the kinds of processes such as RF CMOS, GaAs, BiCMOS, SOI and carry out single-chip integration realization, cost
It is low, it has broad application prospects and is worth.
Description of the drawings
Attached drawing 1 is traditional transformer circuit schematic diagram.
Attached drawing 2 is the integrated variable turning ratio transformer block diagram of on piece.
Attached drawing 3 is the integrated variable turning ratio transformer schematic diagram of on piece.
Attached drawing 4 is the equivalent schematic diagram under two kinds of operating modes of the integrated variable turning ratio transformer of on piece.
Attached drawing 5 is traditional structure and the integrated variable turning ratio transformer structure of on piece of the present invention in the asynchronous matching of impedance
Situation compares（a）Traditional structure（b）Structure of the invention.
Attached drawing 6 is a variety of turning ratio transformer schematic diagrams that multiple primary coils are realized.
Attached drawing 7 is a variety of turning ratio transformer physical circuit figures that multiple primary coils are realized.
Li1, Li2, Lo1 are inductance in figure, and M1, M2, M3, M4 are transistors, and R1, R2, R3, R4 are resistance, and o1, o2 are defeated
Exit port, i are input ports, and in+ is rf inputs mouth anode, and in- is rf inputs mouth cathode, and VC, VCF are control letters
Number.
Specific implementation mode
A kind of integrated variable turning ratio transformer of on piece, including A primary coil units, A switch units, B primary coil lists
The anode of member, B switch units and secondary coil unit, wherein A primary coil units is connected to rf inputs mouth anode in+, A
The cathode of primary coil unit is connected to the i input ports of A switch units, and the o1 output ports of A switch units are connected to B switches
The o1 output ports of unit, the o2 output ports of A switch units are connected to the anode of B primary coil units, B primary coil units
Cathode be connected to the o2 output ports of B switch units, the i input ports of B switch units are connected to rf inputs mouth cathode
In-, secondary coil anode are connected to radio frequency output port anode out+, and secondary coil cathode is connected to radio frequency output port cathode
Out-, there are electromagnetic couplings between secondary coil unit and A primary coil units and B primary coil units, and radio frequency is inputted and is believed
Number coupling output；Transformer turn ratio is controlled by A switch units and B switch units, at the beginning of the A primary coil unit number of turns is M1, B
The grade coil unit number of turns is M2, the secondary coil unit number of turns is N1, it can be achieved that M1:N1 or（M1+M2）:Two kinds of turn ratio transformations of N1
Device.
The integrated variable turning ratio transformer of the on piece includes being more than or equal to a primary coil unit number, to realize more
A variety of turning ratio transformers.
The A primary coil units include Li1 inductance；The anode of Li1 inductance is connected to rf inputs mouth anode,
The cathode of Li1 inductance is connected to the i input ports of A switch units.
The A switch units include M1 transistors, M2 transistors, R1 resistance and R2 resistance；The drain electrode of M1 transistors connects
It is connected to the drain electrode of M2 transistors, while being connected to the i input ports of A switch units, the source electrode of M1 transistors is connected to A switch lists
The o1 output ports of member, while the o1 output ports of B switch units are connected to, the grid of M1 transistors is connected to the A of R1 resistance
End；The ends B of R1 resistance are connected to VC control voltages；The source electrode of M2 transistors is connected to the anode of B primary coil units, connects simultaneously
The o2 output ports of A switch units are connected to, the grid of M2 transistors is connected to the ends A of R2 resistance；The ends B of R2 resistance are connected to
VCF controls voltage.
The B primary coil units include Li2 inductance；The anode of Li2 inductance is connected to the o2 output ends of A switch units
Mouthful, the cathode of Li2 inductance is connected to the o2 output ports of B switch units.
The B switch units include M3 transistors and M4 transistors, R3 resistance and R4 resistance；The drain electrode of M3 transistors
The o1 output ports of A switch units are connected to, while being connected to the o1 output ports of B switch units, the source electrode of M3 transistors connects
It is connected to the source electrode of M4 transistors, while the grid for being connected to rf inputs mouth cathode in-, M3 transistor is connected to R3 resistance
The ends A；The ends B of R3 resistance are connected to VC control signal end mouths；The drain electrode of M4 transistors is connected to the negative pole end of B primary coil units
Mouthful, while the o2 output ports of B switch units are connected to, the grid of M4 transistors is connected to the ends A of R4 resistance, the B of R4 resistance
End is connected to VCF control signal end mouths.
The secondary coil unit includes Lo1 inductance；The anode of Lo1 inductance is connected to the output mouth anode out+, Lo1
The cathode of inductance is connected to the output a mouthful cathode out-；Lo1 inductance forward direction coupled ends are coupled to the inductance in A primary coil units
The positive coupled end of Li2 in Li1, B primary coil unit.
The VC and VCF is a pair of of inverted control signal；When VC control signals are height, and VCF control signals are low, M1 is brilliant
Body pipe and M3 transistor turns, M2 transistors and M4 transistor cutoffs, transformer turn ratio are equal to Li1 number of inductor and Lo1 electricity
Feel the ratio between number of turns；It is low when VC controls signal, when VCF control signals are high, M1 transistors and M3 transistor cutoffs, M2 transistors
With M4 transistor turns, transformer turn ratio is equal to Li1 inductance plus the ratio between the number of total coils of Li2 inductance and Lo1 number of inductor；It is logical
It crosses control VC and VCF and realizes that voltage turn ratio is adjustable；The unit number of primary coil is more than or equal to 1, to realize a variety of circles
Number is than variation.
Technical solution of the present invention is further illustrated below in conjunction with the accompanying drawings
As shown in Fig. 2, the integrated variable turning ratio transformer of a kind of on piece, structure include A primary coil units, and A switches are single
Member, B primary coil units, B switch units and secondary coil unit, it is defeated that the anodes of wherein A primary coil units is connected to radio frequency
The cathode of inbound port anode in+, A primary coil unit is connected to the output end of input port i, the A switch unit of A switch units
The output port o2 for output port o1, the A switch unit that mouth o1 is connected to B switch units is being connected to B primary coil units just
Pole, the input port i that the cathode of B primary coil units is connected to output port o2, the B switch unit of B switch units are connected to
Rf inputs mouth cathode in-, secondary coil anode are connected to radio frequency output port anode out+, and secondary coil cathode is connected to
Radio frequency output port cathode out-, there are electromagnetism couplings between secondary coil unit and A primary coil units, B primary coil units
It closes, radio-frequency input signals is coupled and is exported.A switch units and B switch units control transformer turn ratio, it is assumed that A primary coils
The unit number of turns be M1, B primary coil unit number of turns be M2, the secondary coil unit number of turns is N1, then can be achieved M1:N1 and（M1+
M2）:Two kinds of turning ratio transformers of N1, primary coil unit number also can be multiple, to realize more kinds of turning ratio transformers.
As shown in Fig. 3, the integrated variable turning ratio transformer of a kind of on piece, it is characterized in that the A primary lines
Coil unit includes inductance Li1；The anode of Li1 is connected to rf inputs mouth anode, and the cathode of Li1 is connected to A switch units
Port i.
The A switch units include transistor M1, transistor M2, resistance R1 and resistance R2；The drain electrode of transistor M1 connects
It is connected to the drain electrode of transistor M2, while being connected to the port i of A switch units, the source electrode of transistor M1 is connected to A switch units
Port o1, while it being connected to the port o1 of B switch units, the grid of transistor M1 is connected to resistance R1；The other end of resistance R1
It is connected to control voltage VC；The source electrode of transistor M2 is connected to the anode of B primary coil units, while being connected to A switch units
Port o2, the grid of transistor M2 is connected to one end of resistance R2；The other end of resistance R2 is connected to control voltage VCF.
The B primary coil units include inductance Li2；The anode of inductance Li2 is connected to the port o2 of A switch units,
The cathode of inductance Li2 is connected to the port o2 of B switch units.
The B switch units include transistor M3 and transistor M4, resistance R3 and resistance R4；The drain electrode of transistor M3 connects
It is connected to the port o1 of A switch units, while being connected to the port o1 of B switch units, the source electrode of transistor M3 is connected to transistor
The source electrode of M4, while it being connected to rf inputs mouth cathode in-, the grid of transistor M3 is connected to one end of resistance R3；Resistance
The other end of R3 is connected to control signal end mouth VC；The drain electrode of transistor M4 is connected to the cathode port of B primary coil units, together
When be connected to the port o2 of B switch units, the grid of transistor M4 is connected to one end of resistance R4, the other end connection of resistance R4
To control signal end mouth VCF.
The secondary coil unit includes inductance Lo1；The anode of inductance Lo1 is connected to the output mouth anode out+, electricity
The cathode of sense Lo2 is connected to the output a mouthful cathode out-；Inductance Lo2 forward direction coupled ends are coupled to the positive coupling of inductance Li1, Li2
Close end.
As shown in Fig. 4, VC and VCF is a pair of of inverted control signal；Assuming that the number of turns of Li1 is in A primary coil units
The number of turns of Li2 is M2 in M1, B primary coil unit, and the number of turns of secondary coil unit is N1；It is brilliant when VC is height, and VCF is low
Body pipe M1 and transistor M3 conductings, transistor M2 and transistor M4 cut-offs, equivalent schematic diagram such as Fig. 4 of transformer（a）It is shown, become
The turn ratio of depressor is M1：N1, at this point,
Zin=(M1/N1)2×R
v out=(N/M1) ×v in
i out=(M1/N1) ×i in；
When VC is low, when VCF is high, transistor M1 and transistor M3 cut-offs, transistor M2 and transistor M4 are connected, transformer
Equivalent schematic diagram such as Fig. 4（b）Shown, transformer turn ratio is（M1+M2）：N1, at this point,
Zin=[(M1+M2)/N1]2×R
v out=[N/(M1+M2)] ×v in
i out=[(M1+M2)/N1] ×i in；
Realize that voltage turn ratio is adjustable by controlling VC and VCF；The unit number of primary coil can be it is multiple, it is more kinds of to realize
Turn ratio variation.
As shown in Fig. 5, traditional structure and structure of the invention are in the asynchronous match condition comparison of impedance（Source impedance is 50
Ω, load impedance are respectively 25 Ω and 75 Ω）, in traditional architectures, when load impedance is 25 Ω, matching is good, when load hinders
Anti-cut impedance matching is deteriorated when shifting to 75 Ω, and S11 is only -8, is unsatisfactory for -10 standards below；When using the present invention, Ke Yifen
It is other that two states are matched, according to different loads by switching working condition, matched in -15dB in the case of two kinds
Below.
As shown in attached drawing 6-7, a variety of turning ratio transformer schematic diagrams and practical circuit diagram realized for multiple primary coils.
Claims (8)
1. the integrated variable turning ratio transformer of a kind of on piece, it is characterized in that including A primary coil units, A switch units, B primary
The anode of coil unit, B switch units and secondary coil unit, wherein A primary coil units is being connected to rf inputs mouth just
Pole（in+）, the cathode of A primary coil units is connected to the i input ports of A switch units, and the o1 output ports of A switch units connect
It is connected to the o1 output ports of B switch units, the o2 output ports of A switch units are connected to the anode of B primary coil units, at the beginning of B
The cathode of grade coil unit is connected to the o2 output ports of B switch units, and it is defeated that the i input ports of B switch units are connected to radio frequency
Inbound port cathode（in-）, it is positive that secondary coil anode is connected to radio frequency output port（out+）, secondary coil cathode, which is connected to, to be penetrated
Frequency output port cathode（out-）, there are electromagnetism couplings between secondary coil unit and A primary coil units and B primary coil units
It closes, radio-frequency input signals is coupled and is exported；Transformer turn ratio, A primary coils are controlled by A switch units and B switch units
The unit number of turns be M1, B primary coil unit number of turns be M2, the secondary coil unit number of turns is N1, it can be achieved that M1:N1 or（M1+M2）:
Two kinds of turning ratio transformers of N1.
2. a kind of integrated variable turning ratio transformer of on piece according to claim 1, can it is characterized in that the on piece is integrated
It includes being more than or equal to a primary coil unit number to become turning ratio transformer, to realize more kinds of turning ratio transformers.
3. the integrated variable turning ratio transformer of a kind of on piece according to claim 1, it is characterized in that the A primary coils
Unit includes Li1 inductance；The anode of Li1 inductance is connected to rf inputs mouth anode, and the cathode of Li1 inductance is connected to A switches
The i input ports of unit.
4. the integrated variable turning ratio transformer of a kind of on piece according to claim 1, it is characterized in that the A switch units
Including M1 transistors, M2 transistors, R1 resistance and R2 resistance；The drain electrode of M1 transistors is connected to the drain electrode of M2 transistors, simultaneously
The i input ports of A switch units are connected to, the source electrode of M1 transistors is connected to the o1 output ports of A switch units, connects simultaneously
To the o1 output ports of B switch units, the grid of M1 transistors is connected to the ends A of R1 resistance；The ends B of R1 resistance are connected to VC controls
Voltage processed；The source electrode of M2 transistors is connected to the anode of B primary coil units, while being connected to the o2 output ends of A switch units
Mouthful, the grid of M2 transistors is connected to the ends A of R2 resistance；The ends B of R2 resistance are connected to VCF control voltages.
5. the integrated variable turning ratio transformer of a kind of on piece according to claim 1, it is characterized in that the B primary coils
Unit includes Li2 inductance；The anode of Li2 inductance is connected to the o2 output ports of A switch units, and the cathode of Li2 inductance is connected to B
The o2 output ports of switch unit.
6. the integrated variable turning ratio transformer of a kind of on piece according to claim 1, it is characterized in that the B switch units
Including M3 transistors and M4 transistors, R3 resistance and R4 resistance；The drain electrode of M3 transistors is connected to the o1 output ends of A switch units
Mouthful, while the o1 output ports of B switch units are connected to, the source electrode of M3 transistors is connected to the source electrode of M4 transistors, connects simultaneously
It is connected to rf inputs mouth cathode（in-）, the grid of M3 transistors is connected to the ends A of R3 resistance；The ends B of R3 resistance are connected to VC
Control signal end mouth；The drain electrode of M4 transistors is connected to the cathode port of B primary coil units, while being connected to B switch units
O2 output ports, the grid of M4 transistors is connected to the ends A of R4 resistance, and the ends B of R4 resistance are connected to VCF control signal ends
Mouthful.
7. the integrated variable turning ratio transformer of a kind of on piece according to claim 1, it is characterized in that the secondary coil
Unit includes Lo1 inductance；The anode of Lo1 inductance is connected to the output mouth anode（out+）, the cathode of Lo1 inductance is connected to defeated
Exit port cathode（out-）；Lo1 inductance forward direction coupled ends are coupled to Li1 inductance, B primary coil lists in A primary coil units
The positive coupled end of Li2 inductance in member.
8. a kind of integrated variable turning ratio transformer of on piece according to claim 1, it is characterised in that the VC and VCF are
A pair of of inverted control signal；When VC control signals are height, and VCF control signals are low, M1 transistors and M3 transistor turns, M2
Transistor and M4 transistor cutoffs, transformer turn ratio are equal to the ratio between Li1 number of inductor and Lo1 number of inductor；Believe when VC is controlled
Number to be low, VCF controls signal when being high, M1 transistors and M3 transistor cutoffs, M2 transistors and M4 transistor turns, transformer
Turn ratio is equal to Li1 inductance plus the ratio between the number of total coils of Li2 inductance and Lo1 number of inductor；Signal and VCF are controlled by controlling VC
It controls signal and realizes that voltage turn ratio is adjustable；The unit number of primary coil is more than or equal to 1, to realize that a variety of turn ratios becomes
Change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587935.2A CN108447651B (en) | 2018-06-08 | 2018-06-08 | On-chip integrated variable turns ratio transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587935.2A CN108447651B (en) | 2018-06-08 | 2018-06-08 | On-chip integrated variable turns ratio transformer |
Publications (2)
| Publication Number | Publication Date |
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| CN108447651A true CN108447651A (en) | 2018-08-24 |
| CN108447651B CN108447651B (en) | 2023-07-11 |
Family
ID=63206800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587935.2A Active CN108447651B (en) | 2018-06-08 | 2018-06-08 | On-chip integrated variable turns ratio transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754989A (en) * | 2019-01-30 | 2019-05-14 | 熊猫电子集团有限公司 | A kind of line transformer and radio-frequency power amplifier |
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| US20090079269A1 (en) * | 2007-09-26 | 2009-03-26 | Seiko Epson Corporation | Power transmission control device, power transmitting device, power receiving device, non-contact power transmission system, electronic instrument, secondary coil position detection method, and primary coil positioning method |
| US20140111108A1 (en) * | 2012-09-20 | 2014-04-24 | Silicon Works Co., Ltd. | System control unit, led driver including the system control unit, and method of controlling static current of the led driver |
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| CN207117487U (en) * | 2017-05-22 | 2018-03-16 | 广州视源电子科技股份有限公司 | Transformer and load driving circuit |
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2018
- 2018-06-08 CN CN201810587935.2A patent/CN108447651B/en active Active
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| US20090079269A1 (en) * | 2007-09-26 | 2009-03-26 | Seiko Epson Corporation | Power transmission control device, power transmitting device, power receiving device, non-contact power transmission system, electronic instrument, secondary coil position detection method, and primary coil positioning method |
| US20140111108A1 (en) * | 2012-09-20 | 2014-04-24 | Silicon Works Co., Ltd. | System control unit, led driver including the system control unit, and method of controlling static current of the led driver |
| CN104009759A (en) * | 2014-06-03 | 2014-08-27 | 南京国博电子有限公司 | Multi-Nyquist-domain digital analog converter |
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| CN109754989A (en) * | 2019-01-30 | 2019-05-14 | 熊猫电子集团有限公司 | A kind of line transformer and radio-frequency power amplifier |
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| Publication number | Publication date |
|---|---|
| CN108447651B (en) | 2023-07-11 |
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Address after: 210016 No.166, zhengfangzhong Road, moling street, Jiangning District, Nanjing City, Jiangsu Province Applicant after: Nanjing Guobo Electronics Co.,Ltd. Address before: 210016 No.166, zhengfangzhong Road, moling street, Jiangning District, Nanjing City, Jiangsu Province Applicant before: NANJING GUOBO ELECTRONICS Co.,Ltd. |
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