CN206077338U - A kind of balance magneto-resistor frequency mixer - Google Patents
A kind of balance magneto-resistor frequency mixer Download PDFInfo
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- CN206077338U CN206077338U CN201620899967.2U CN201620899967U CN206077338U CN 206077338 U CN206077338 U CN 206077338U CN 201620899967 U CN201620899967 U CN 201620899967U CN 206077338 U CN206077338 U CN 206077338U
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Abstract
This utility model discloses a kind of balance magneto-resistor frequency mixer，Including the first spiral winding、Second spiral winding、Balance bridge type magnetic resistance sensor and magnetic masking layer，First spiral winding and the second spiral winding are located between magnetic masking layer and balance bridge type magnetic resistance sensor respectively，Balance bridge type magnetic resistance sensor includes the magneto-resistor full-bridge being made up of four magneto-resistor bridge arms and the magneto-resistor counter-jib that is connected with magneto-resistor full-bridge power end，Four magneto-resistor bridge arms are located above or below the first spiral winding two-by-two to be had in first subregion and the second subregion of opposite current flow direction，And magneto-resistor counter-jib is then located above or below the second spiral winding and has in the 3rd subregion in same current direction，First frequency signal source is input into by the first spiral winding，Second frequency signal source is input into by the second spiral winding，Mixed frequency signal is exported by magneto-resistor full bridge signal outfan，The frequency mixer has input signal mutually isolated with power supply，Good linearity，Simple structure feature.
Description
Technical field
This utility model is related to magnetic sensor technologies field, more particularly to a kind of balance magneto-resistor frequency mixer.
Background technology
Frequency mixer refer to by frequency for f1 signal source and frequency for f2 signal source be transformed into it is special with f1+f2 and f1-f2
Levy the electronic device of frequency output signal.By frequency mixer, so that signal source frequency moves to high frequency or low frequency position, from
And signal processing is conveniently carried out, and for example signal frequency is moved by frequency mixing technique, so as to same noise signal is separated,
And then noise filtering can be fallen by filtering technique, then cause signal frequency to return to original numerical value by frequency mixing technique,
Such that it is able to realize the process of noise signal.Therefore, frequency mixing technique is used widely in signal processing circuit technology.
The frequency mixer for using at present includes passive and active two types, and passive frequency mixer adopts one or more two poles
Pipe, approximately has quadratic power feature to realize multiplying using the non-linear section of diode current-voltage characteristic curve, operates
When two input signal sums are acted on into diode, then diode output current signal is transformed into into voltage signal i.e. further
The output item comprising two product of signals can be obtained.
Active mixer increases product signal intensity using multiplier (such as transistor or vacuum tube), by being input into frequency
Rate signal and local frequency are mixed, such that it is able to obtain the signal output frequency of the addition comprising two frequencies and subtraction,
Active mixer improves the degree of isolation of two inputs, but may have more high noisy, and its power consumption is also bigger.
With upper frequency mixer, there are the following problems：
1) diode mixer adopts approximate evaluation method, output signal also to exist in addition to comprising required frequency
Other frequencies, and its signal intensity is also than larger, need, subsequently using technologies such as wave filter separating noise, can just obtain institute
Need signal.
2) active mixer realizes frequency compounding using local oscillator, and output signal includes various other frequencies, needs also exist for adopting
Separated with wave filter, and the device such as multiplier and local oscillator, increased the complexity and power consumption of circuit.
3) input signal and output signal cannot realize effectively isolation, between can produce and influence each other.
In order to solve the problem with present on, Chinese patent 201310313538.3 proposes a kind of magnetic-resistance mixer, profit
One of which frequency signal is transformed into magnetic field by the characteristics of having good linear relation with external magnetic field change with magnetic resistance sensor
Signal, flows through coil to produce by electric current, and another frequency signal is transformed into power supply signal and acts on magnetic resistance sensor,
Then magnetoresistive transducer output signal be two kinds of frequencies multiplying signal, gained frequency for its and/or it is poor, without which
His unnecessary signal, without other elements such as wave filter；As magnetic coupling is adopted between coil and sensor, so as to
Realize between input signal and input signal and output signal are effectively isolated.
But, there are the following problems for above-mentioned magnetic-resistance mixer, and first frequency signal and second frequency signal are except as mixed
Outside the signal source of frequency device, also as the power supply signal of magnetic resistance sensor, it is generally the case that power supply signal amplitude is more than signal
Source amplitude, so as to have impact on selection of the frequency mixer to second frequency signal.
Utility model content
In order to solve the above problems, this utility model provides a kind of balance magneto-resistor frequency mixer, its first frequency signal source
All it is to act on magneto-resistor arm by spiral winding to realize mixing as second frequency signal source, while voltage source has list
Only stable feature, it is to avoid simultaneously as the introduced difficult problem of power supply and signal source.
This utility model is realized according to technical scheme below：
A kind of balance magneto-resistor frequency mixer of the present utility model, which includes spiral winding, balance bridge type magnetic resistance sensor
And magnetic masking layer, the spiral winding be located between the magnetic masking layer and the balance bridge type magnetic resistance sensor, the spiral shell
Spin line circle includes the first spiral winding and the second spiral winding, and the upper surface or lower surface of first spiral winding have first
Subregion and the second subregion, the sense of current in first subregion and the second subregion is conversely, second helix
The upper surface or lower surface of circle have the 3rd subregion, the electric current in the 3rd subregion be same direction, the balance bridge
Formula magnetic resistance sensor includes magneto-resistor full-bridge and magneto-resistor counter-jib, and the magneto-resistor counter-jib is connected with the magneto-resistor full-bridge
Connect, the magneto-resistor full-bridge is made up of four magneto-resistor bridge arms, two of which magneto-resistor bridge arm is located in first subregion,
Another two magneto-resistor bridge arm is located in second subregion, and the magneto-resistor counter-jib is located in the 3rd subregion, institute
The first spiral winding input first frequency signal source is stated, second spiral winding is input into second frequency signal source, the magnetoelectricity
The signal output part output mixed frequency signal of resistance full-bridge, the output frequency of the mixed frequency signal is first frequency signal source and the second frequency
The frequency sum of rate signal source or difference.
Further, the magneto-resistor counter-jib is one, and this magneto-resistor counter-jib is defeated with magneto-resistor full-bridge power supply
Go out end or input connection；Or,
The magneto-resistor counter-jib be two, the two magneto-resistor counter-jibs respectively with magneto-resistor full-bridge power output end and
Input connects.
Further, the magneto-resistor bridge arm and the magneto-resistor counter-jib include M*N array magnetic tunnel-junction respectively,
Magnetic tunnel-junction described in each column is serially connected in magnetic tunnel junction cell string, between the magnetic tunnel junction cell string series, parallel or
Into two ends mouth structure, N represents the row of array architecture to connection in series-parallel Hybrid connections, and M represents that the row of array architecture, N and M are respectively
Positive integer more than or equal to 1.
Further, the sensitive axes of the magnetic tunnel-junction in the magneto-resistor bridge arm are each perpendicular to the electric current of the first spiral winding
Direction, the sensitive axes of the magnetic tunnel-junction in the magneto-resistor counter-jib are each perpendicular to the sense of current of the second spiral winding, described
The sensitivity axial direction characteristics of geomagnetic field distribution of the magnetic tunnel-junction in magnetic tunnel-junction and the second subregion in the first subregion is in reverse.
Further, the connection of the magnetic tunnel-junction in the magnetic tunnel-junction in first subregion and second subregion
Structure is identical, and is symmetrical arranged.
Further, the resistance of the magnetic tunnel-junction in first subregion and the second subregion respectively with first spiral shell
The magnetic tunnel-junction sensitivity axial magnetic field that spin line circle is produced is linear；
The magnetic tunnel-junction that the resistance of the magnetic tunnel-junction in the 3rd subregion is produced with second spiral winding is sensitive
Axial magnetic field is linear.
Further, the magnetic tunnel-junction in first subregion and the second subregion is perpendicular or parallel to first spiral shell
The sense of current of spin line circle, the magnetic tunnel-junction in the 3rd subregion is perpendicular or parallel to the electric current side of second spiral winding
To.
Further, the first frequency signal source is connected with first spiral winding by active or passive mode,
The second frequency signal source is connected with second spiral winding by passive or active mode, and the mixed frequency signal passes through nothing
Source or active mode are connected with the signal output part of the balance bridge type magnetoresistive transducer.
Further, the spiral winding be high conductivity metal coil of material, the high conductivity metal include copper,
One or more in gold, silver, aluminum and tantalum, the magnetic masking layer are high magnetic permeability ferrimag layer, and the high magnetic permeability is ferromagnetic
Alloy includes one or more in NiFe, CoFeSiB, CoZrNb, CoFeB, FeSiB and FeSiBNbCu.
Further, the spiral winding thickness is 1-20 μm, and the width of the spiral winding is 5-40 μm, adjacent two
Spacing between spiral winding is 10-100 μm, and the magnetic masking layer thickness is 1-20 μm.
Balance magneto-resistor frequency mixer of the present utility model, its first frequency signal source still act on magnetic by first coil
Four magneto-resistor bridge arms of resistance bridge, second frequency signal source then act on what is connected with magnetoelectricity conducting bridge by the second coil
Magneto-resistor counter-jib, and the two ends of the balance bridge type magnetic resistance sensor that four magneto-resistor bridge arms and magneto-resistor counter-jib are constituted are straight
Power supply and ground are connect in succession, and when frequency mixer works, between power supply and ground, voltage keeps constant, and four magneto-resistor bridge arm compositions
The voltage at the two ends of magneto-resistor full-bridge is adjusted by magneto-resistor counter-jib, is equally realized to first frequency signal source and
The mixing of two frequency signal source frequencies, such advantage are that first frequency signal source is all as second frequency signal source
Magneto-resistor arm (magneto-resistor bridge arm and magneto-resistor counter-jib) is acted on by spiral winding to realize mixing, while voltage source has
Independent stable feature, it is to avoid simultaneously as the introduced difficult problem of power supply and signal source.
Description of the drawings
Fig. 1 is this utility model balance magneto-resistor frequency mixer sectional view；
Fig. 2 is this utility model balance magneto-resistor frequency mixer top view；
Fig. 3 is the structural representation that this utility model balances magneto-resistor frequency mixer；
Fig. 4 is another structural representation that this utility model balances magneto-resistor frequency mixer；
Fig. 5 is spiral winding Distribution of Magnetic Field figure in magneto-resistor on this utility model balance magneto-resistor frequency mixer；
Fig. 6 is solenoid magnetic field scattergram when this utility model whether there is magnetic masking layer；
Fig. 7 is this utility model magnetic masking layer external magnetic field decay factor calculating figure；
Fig. 8 is this utility model without external magnetic field scattergram during magnetic masking layer；
Fig. 9 is external magnetic field scattergram when this utility model has magnetic masking layer；
Figure 10 is this utility model magnetic resistance sensor magneto-resistor-external magnetic field characteristic pattern；
Figure 11 is that invention magneto-resistor full-bridge bridge arm or counter-jib magnetic tunnel-junction are connected in series figure；
Figure 12 is that this utility model magneto-resistor full-bridge bridge arm or counter-jib magnetic tunnel-junction are connected in parallel figure；
Figure 13 is this utility model magneto-resistor full-bridge bridge arm or counter-jib magnetic tunnel-junction connection in series-parallel connection figure；
Figure 14 is a distribution schematic diagram of the first spiral winding of this utility model and magneto-resistor bridge arm tunnel knot；
Figure 15 is a distribution schematic diagram of the second spiral winding of this utility model and magneto-resistor counter-jib tunnel knot；
Figure 16 is another distribution schematic diagram of the first spiral winding of this utility model and magneto-resistor bridge arm tunnel knot；
Figure 17 is another distribution schematic diagram of the second spiral winding of this utility model and magneto-resistor counter-jib tunnel knot；
Figure 18 is another distribution schematic diagram of the first spiral winding of this utility model and magneto-resistor bridge arm tunnel knot；
Figure 19 is another distribution schematic diagram of the second spiral winding of this utility model and magneto-resistor counter-jib tunnel knot；
Figure 20 is this utility model balance magneto-resistor frequency mixer working mode figure one；
Figure 21 is this utility model balance magneto-resistor frequency mixer working mode figure two；
Figure 22 is this utility model balance magneto-resistor frequency mixer working mode figure three；
Figure 23 is this utility model balance magneto-resistor frequency mixer working mode figure four.
Wherein, 1- substrates, 2- magnetic masking layers, 3- balance bridge type magnetic resistance sensors, 4- spiral windings, the first spirals of 40-
Coil, the second spiral windings of 44-, the first subregions of 41-, the second subregions of 42-, the 3rd subregions of 43-, 31,32- magneto-resistor bridges
Arm, 33- magneto-resistor counter-jibs.
Specific embodiment
It is to make purpose, technical scheme and the advantage of this utility model embodiment clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described to the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of this utility model, rather than the embodiment of whole.
Embodiment one
The balance magneto-resistor frequency mixer cross section structure figure that Fig. 1 is proposed by this utility model, the frequency mixer include spiral
Coil 4, balance bridge type magnetic resistance sensor 3 and magnetic masking layer 2, the spiral winding 4 are located at the magnetic masking layer 2 and described flat
Between weighing apparatus bridge-type magnetic resistance sensor 3.Wherein, the spiral winding 4 on substrate 1 includes the first spiral winding 40 and second
Spiral winding 44, wherein, the first spiral winding 40 includes the first subregion 41 with inverse current and the second subregion 42, the
Two spiral windings 44 include the 3rd subregion 43, and the 3rd subregion 43 has the identical sense of current.The balance bridge type magnetic
Electric resistance sensor 3 includes magneto-resistor full-bridge and magneto-resistor counter-jib, and the magneto-resistor counter-jib is connected with the magneto-resistor full-bridge,
The magneto-resistor full-bridge is made up of four magneto-resistor bridge arms, and two of which magneto-resistor bridge arm is located in first subregion 41,
Another two magneto-resistor bridge arm is located in second subregion 42, and the magneto-resistor counter-jib is located at the 3rd subregion 43
Interior, first spiral winding 40 is input into first frequency signal source, and second spiral winding 44 is input into second frequency signal source,
The signal output part output of the magneto-resistor full-bridge, the output frequency of the mixed frequency signal is first frequency signal source and the second frequency
The frequency sum of rate signal source or difference.
Fig. 2 is balance magneto-resistor frequency mixer top view, wherein, 2 is magnetic masking layer, and 40 and 44 are respectively the first spiral winding
With the second spiral winding, 41 and 42 are respectively the first sub-regions with the wire that is arranged parallel to each other in the first spiral winding 40
41 and second subregion 42, the first subregion 41 and 42 sense of current of the second subregion are conversely, such first spiral winding 40 exists
The characteristics of geomagnetic field distribution that first subregion 41 and the second subregion 42 are produced is in reverse, and ensures magneto-resistor bridge arm 31 and magnetoelectricity
The magnetic field experienced in the case of identical solenoid current of resistance bridge arm 32 is identical, such magneto-resistor bridge arm 31 and magneto-resistor bridge
The magnetoelectricity resistance of arm 32 is equal in magnitude, in opposite direction.In the same manner, there is the row of being parallel to each other comprising one section also in the second spiral winding 44
3rd subregion 43 of column wire, single or two magneto-resistor counter-jibs 33 are located in the 3rd subregion 43, and the 3rd sub
In region 43, the sense of current is same direction.
Fig. 3 and Fig. 4 is respectively two kinds of structure charts of balance bridge type frequency mixer, and balance bridge type magnetic resistance sensor includes magnetoelectricity
Resistance full-bridge and magneto-resistor counter-jib, magneto-resistor full-bridge are made up of four magneto-resistors bridge arm R1, R2, R3 and R4, and the magneto-resistor is put down
Weighing apparatus arm is a R5, and this magneto-resistor counter-jib R5 is located at magneto-resistor full-bridge power input or current input terminal, and with
Magneto-resistor full-bridge is connected, or the magneto-resistor counter-jib is that two R5 and R6, R5 and R6 are defeated with magneto-resistor full-bridge power supply respectively
Go out end and input series connection, wherein C1, C2, C3 and C4 constitutes the first spiral winding, C5 and C6 constitute the second spiral winding, R1 and
R2 is located at the first subregion, and R3 and R4 is located at the second subregion, and R5 and R6 is located at the 3rd subregion, first frequency signal source two ends
Voltage signal frequency is f1, and the signal frequency of second frequency signal source is f2, balance bridge type magnetic resistance sensor both end voltage source
It is constant, respectively Vcc and GND, and its 3rd signal frequency of signal output part difference output is f.
Fig. 5 is the first spiral winding or magnetic field produced by the second spiral winding and magnetic masking layer in spatial distribution curve chart,
Under the conditions of Fig. 6 has compared magnetic masking layer and unshielded layers, the first spiral winding or the second spiral winding upper surface or following table
Perpendicular to sense of current magnetic-field component in first subregion of face bridge-type magnetic resistance sensor, the second subregion or the 3rd subregion
Scattergram, it can be seen that its magnetic field intensity been significantly enhanced after applying magnetic masking layer, additionally, magnetic field is in the first subregion and the
There are antisymmetry distribution characteristicss, in symmetrical near the first subregion, the second subregion or the 3rd subregion in two subregions
In the region 10 and 11 at the heart 12 and edge, magnetic field is non-uniform Distribution, and in zone line 12 then has uniform distribution features.
Fig. 7 is attenuation rate computation model of the magnetic masking layer to the external magnetic field parallel to plane, and Fig. 8 is without magnetic masking layer situation
Scattergram of the lower spiral winding in magnetic field produced by balance bridge type magnetic resistance sensor position, Fig. 9 is in the case of having magnetic masking layer
Spiral winding is in Distribution of Magnetic Field figure produced by balance bridge type magnetic resistance sensor position, it can be seen that its field decay rate is 1/
9, show that magnetic masking layer external magnetic field has good shielding.
Figure 10 for Compositional balance bridge-type magnetic resistance sensor full-bridge bridge arm R1, R2, R3 and R4, and counter-jib R5 and/
Or the magnetic tunnel-junction resistance versus magnetic field characteristic curve of R6, in the first letter produced by the first spiral winding and the second spiral winding difference
In the range of number magnetic field, secondary signal magnetic field working region, the magnetic tunnel-junction in first subregion 41 and the second subregion 42
Resistance it is linear with the first signal magnetic field respectively；The resistance of the magnetic tunnel-junction in the 3rd subregion 43 and secondary signal magnetic
Field is linear.
Figure 11-13 is balance bridge type magnetic resistance sensor full-bridge bridge arm R1, R2, R3, R4 and counter-jib R5 and/or R6
Structure chart, each magneto-resistor bridge arm include M*N array magnetic tunnel-junction, and magnetic tunnel-junction described in each column is serially connected in magnetic channel
The statement of account unit string, and between magnetic tunnel junction cell string series, parallel or connection in series-parallel Hybrid connections into two ends mouth structure, N represents battle array
The row of column structures, M represent the row of array architecture, the positive integer of N, M respectively more than or equal to 1.Magnetic tunnel junction cell string
Be connected in series such as Figure 11, be connected in parallel such as Figure 12, or for string Hybrid connections structure such as Figure 13.
It is f1 that the first signal frequency produced by electric current I is flow through in assuming the first spiral winding, then which is in the first spiral winding
In produced by correspondence field signal H frequencies be similarly f1, flow through in the second spiral winding produced by electric current I1 secondary signal frequency
Rate is f2, then its corresponding field signal H1 frequency produced by the second spiral winding is similarly f2, due to the first subregion
Interior corresponding magneto-resistor bridge arm R1 and R2 magneto-resistor bridge arm R3 and R4 corresponding with the second subregion have antisymmetry magnetic field point
Cloth feature, and R1 with R2 characteristics of geomagnetic field distribution is identical, R3 with R4 characteristics of geomagnetic field distribution is identical, then only need to one of magnetoelectricity
Resistance resistance variations of the bridge arm under the action of a magnetic field are analyzed, and same 3rd subregion R5 and/or R6 have same magnetic field
Distribution characteristicss, only can be analyzed to one of counter-jib.
Assume that the magnetic tunnel-junction resistance versus magnetic field slope of curve shown in Figure 10 is dR/dh, it is assumed that M*N of magneto-resistor bridge arm R1
The each column of array magnetic tunnel-junction includes M (M>0 integer) individual series connection magnetic tunnel-junction, it is assumed that n-th (0<N≤N) row, m (0<n≤
M) individual magnetic tunnel-junction sensitivity axial magnetic field is Hnm1sin(2πf1T), then its resistance variations amplitude is dR/dhHnm1sin(2π
f1T), due to the anti symmetry of balance bridge type magnetic resistance sensor, a corresponding unit in magneto-resistor bridge arm R4, is certainly existed, its
Opposing magnetic field is-Hnm1sin(2πf1T), correspondence magnetic resistance change rate is-dR/dhHnm1sin(2πf1Therefore balance bridge type magnetoelectricity t),
Resistance sensor R1, R4 composition bridge arm all-in resistance is constant, and kindred circumstances constitutes bridge arm suitable for R2, R3.
Therefore, the resistance variations for constituting the magnetic tunnel junction cell string of serial or parallel connection are proportional to frequency f1 of electric current I1, and
And it is relevant with the sensitive axial magnetic field Hnm1 distribution residing for magnetic tunnel junction cell string.
On the other hand, Hnm1 is proportional to electric current I1, i.e. H in the first spiral windingnm1=Knm1·I1, Knm1 is and the first spiral shell
The relevant characteristic coefficient of the electromagnetic performance and physical dimension of spin line circle and magnetic masking layer.
Therefore series, parallel and string mixed structure between tunneling junction cell string, are simply indicated as characteristic coefficient Knm1
Between computing, for the in the case of of connecting between N row tunneling junction cell strings：
And between N row tunneling junction cell strings, during parallel connection, characterization factor is expressed as：
For the series-parallel situation of mixing, it is assumed that be in series with N1 row, N-N1 row are parallel with, then K can be expressed as：
By R1, the all-in resistance change of tetra- full-bridge bridge arms of R2, R3 and R4 is turned to：
In the same manner, the magnetic resistance sensor all-in resistance change being made up of R5 and/or R6 counter-jibs is turned to：
When hypothesis does not have external magnetic field, each bridge arm all-in resistance of magnetic resistance sensor full-bridge is R0, balance bridge arm always electric
Hinder for R01, magnetic resistance sensor full-bridge both end voltage is V1, then the electric current for flowing through in single armed is：
Then bridge-type magnetoresistive transducer output voltage signal is：
Keep constant due to balancing the total voltage Vdd-GND in magnetic resistance sensor two ends, then, i.e. and counter-jib and full-bridge two ends
Voltage summation keeps constant, therefore, when second frequency signal source causes change in voltage in the second spiral winding it is：
Then equally the change in voltage is caused to be at full-bridge two ends：
And caused bridge-type magnetic resistance sensor output voltage signal is：
As can be seen that output signal frequency is the first solenoid current I1 frequencies f1 and the second solenoid current I2 frequencies
Rate f2 and or it is poor, and also comprising frequency f1.
Figure 14 be 42 interior four magneto-resistors bridge arm R1 of first spiral winding the first subregion 41 and the second subregion, R2, R3
Correspond to 311,312,321,322 layout viewing with R4 respectively.R1 and R2 is located at 40 upper surface of the first spiral winding or following table mask
Have in first subregion 41 in counter current direction, R3 and R4 is located at 40 upper surface of the first spiral winding or lower surface has counter current
In second subregion 42 in direction, and magnetic resistance sensor has antisymmetry several in the first subregion 41 and the second subregion 42
What feature, the magnetic tunnel-junction of magneto-resistor bridge arm R1, R2, R3, R4 are located at spiral winding energization section surface center, and parallel to first
The tunneling junction cell of the sense of current of spiral winding 40, R1 and R2 be spaced form, R3 and R4 tunneling junction cell be between
Every spread pattern, and the sensitive axes of the magnetic tunnel-junction in R1, R2, R3 and R4 are perpendicular to the conductive segment of the first spiral winding 40, magnetic
Tunnel knot is located at field homogeneity area.
Equally, Figure 15 is dividing for the balance i.e. R6 of bridge arm 331 i.e. R5 and 332 in the 3rd subregion 43 of the second spiral winding
Butut, for convenience, only gives the situation comprising two counter-jibs, can also actually include the feelings of single counter-jib
Condition.Equally, R5 and R6 are located at the second spiral winding upper surface respectively or lower surface has the 3rd subregion in same current direction
In 43, the magnetic tunnel-junction of R5 and R6 is located at 44 energization section surface center of the second spiral winding, and parallel to the sense of current, R5 and R6
Tunnel become the form of being spaced, and the sensitive axes of magnetic tunnel-junction perpendicular to spiral winding conductive segment.
Figure 16 and Figure 18 are the layout viewing of four magneto-resistor bridge arms on the first spiral winding upper surface or lower surface.R1 and R2
In the first subregion 41, R3 and R4 is located in the second subregion 42, the magnetic channel of the bridge arm R1 in the first subregion 41
The axial magnetic field of knot is identical with the axis magnetic field feature of the magnetic tunnel-junction of bridge arm R2；Bridge in the second subregion 42
The axial magnetic field of the magnetic tunnel-junction of arm R3 is identical with the axis magnetic field feature of the magnetic tunnel-junction of bridge arm R4.And R1 and R3
Structure there is symmetrical feature, R2 and R4 structures have symmetrical feature.Magnetic tunnel-junction and second in first subregion 41
The sensitivity axial direction characteristics of geomagnetic field distribution of the magnetic tunnel-junction in subregion 42 is in reverse.The magneto-resistor bridge arm includes M*N array
Formula magnetic tunnel-junction, magnetic tunnel-junction described in each column are serially connected in magnetic tunnel junction cell string, go here and there between the magnetic tunnel junction cell string
Connection, in parallel or connection in series-parallel Hybrid connections into two ends mouth structure, wherein, N represents the row of array architecture, and M represents that array is tied
The row of structure, the positive integer of N, M respectively more than or equal to 1.Magnetic tunnel-junction in magneto-resistor bridge arm is parallel to corresponding first
The sensitive axes of spiral winding 40 or the magnetic tunnel-junction in the first spiral winding 40, magneto-resistor bridge arm R1, R2, R3 and R4
Perpendicular to the first spiral winding 40, now, magnetic tunnel-junction may be located at field homogeneity area, it is also possible to positioned at magnetic field nonuniformity area,
Field homogeneity area or part can also be partly located at and be located at magnetic field nonuniformity area.
Equally, Figure 17 and Figure 19 are the arrangement of two magneto-resistor balance bridge arms on the second spiral winding upper surface or lower surface
Figure.Magneto-resistor the counter-jib R5 and R6 are located in the 3rd subregion 43 respectively, and R5 and R6 includes M*N array magnetic tunnel respectively
Road is tied, and magnetic tunnel-junction described in each column is serially connected in magnetic tunnel junction cell string, series, parallel between the magnetic tunnel junction cell string
Or connection in series-parallel Hybrid connections are into two ends mouth structure, N represents the row of array architecture, and M represents the row of array architecture, N, M point
It is not the positive integer more than or equal to 1.The axial magnetic of the axial magnetic field of the magnetic tunnel-junction of bridge arm R5 and the magnetic tunnel-junction of bridge arm R6
Field distribution feature is identical, the magnetic tunnel-junction of bridge arm R5 and R6 parallel to the second corresponding spiral winding 44 or perpendicular to
Second spiral winding 44, the sensitive axes of the magnetic tunnel-junction of bridge arm R5 and R6 are perpendicular to the second spiral winding 44, now, magnetic tunnel-junction
May be located at field homogeneity area, it is also possible to positioned at magnetic field nonuniformity area, it is also possible to be partly located at positioned at field homogeneity area or part
Magnetic field nonuniformity area.
First signal source f1 is connected with the first spiral winding 40 by active or passive mode, and secondary signal source f2 passes through nothing
Source or active mode are connected with the second spiral winding 44, and mixed frequency signal is by passive or active mode by balance bridge type magnetoelectricity
The signal output part output of resistance sensor.
Signal processing circuit figures of the Figure 20 for magneto-resistor frequency mixer.Wherein, the first signal source f1 directly with passive form with
First spiral winding two ends are connected, and secondary signal source f2 is directly connected with the second spiral winding two ends with passive form, and is mixed
Signal frequency is directly exported with passive form by signal output port.
Another the signal processing circuit figure of Figure 21 for magnetic-resistance mixer, wherein, the first signal source f1 is with active mode
Voltage signal is transformed into current signal by V-I transducers to be connected with the first spiral winding two ends, secondary signal source f2 is having
Voltage signal is transformed into current signal by V-I transducers and is connected with the second spiral winding two ends by source mode, and mixed frequency signal is then
Exported with passive form.
The third signal processing circuit figure of Figure 22 for magnetic-resistance mixer, wherein, the first signal source f1 is logical with active mode
Cross V-I transducers voltage signal is transformed into into current signal and be connected with the first spiral winding two ends, secondary signal source f2 is with active
Voltage signal is transformed into current signal by V-I transducers and is connected with the second spiral winding two ends by mode, mixed frequency signal buffering
Voltage amplifier is exported with active mode indirectly.
Figure 23 is the 4th kind of signal processing circuit figure for balancing magnetic-resistance mixer, wherein, the first signal source f1 is with passive side
Formula is connected with the first spiral winding two ends, and secondary signal source f2 is connected with the second spiral winding two ends with passive mode, mixing letter
Number by buffer voltagc amplifier indirectly with active mode export.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (10)
- It is 1. a kind of to balance magneto-resistor frequency mixer, it is characterised in that：Including spiral winding (4), balance bridge type magnetic resistance sensor (3) And magnetic masking layer (2), the spiral winding (4) is positioned at the magnetic masking layer (2) and the balance bridge type magnetic resistance sensor (3) Between, the spiral winding (4) includes the first spiral winding (40) and the second spiral winding (44), first spiral winding (40) upper surface or lower surface have the first subregion (41) and the second subregion (42), first subregion (41) and the The sense of current in two subregions (42) is conversely, the upper surface or lower surface of second spiral winding (44) have the 3rd sub-district Domain (43), the electric current in the 3rd subregion (43) are same direction, and the balance bridge type magnetic resistance sensor includes magnetoelectricity Resistance full-bridge and magneto-resistor counter-jib (33), the magneto-resistor counter-jib are connected with the magneto-resistor full-bridge, the magneto-resistor full-bridge By four magneto-resistor bridge arms, (31,32) composition, two of which magneto-resistor bridge arm are located in first subregion (41), another two Magneto-resistor bridge arm is located in second subregion (42), and the magneto-resistor counter-jib (33) is positioned at the 3rd subregion (43) Interior, first spiral winding (40) is input into first frequency signal source, the second spiral winding (44) input second frequency letter Number source, the signal output part output mixed frequency signal of the magneto-resistor full-bridge, the output frequency of the mixed frequency signal is first frequency The frequency sum of signal source and second frequency signal source or difference.
- 2. one kind according to claim 1 balances magneto-resistor frequency mixer, it is characterised in that：The magneto-resistor counter-jib (33) is one, this magneto-resistor counter-jib and magneto-resistor full-bridge power output end or input End connection；Or,The magneto-resistor counter-jib (33) is two, the two magneto-resistor counter-jibs respectively with magneto-resistor full-bridge power output end and Input connects.
- 3. one kind according to claim 2 balances magneto-resistor frequency mixer, it is characterised in that：The magneto-resistor bridge arm (31,32) and the magneto-resistor counter-jib (33) includes M*N array magnetic tunnel-junction respectively, often Arrange the magnetic tunnel-junction and be serially connected in magnetic tunnel junction cell string, series, parallel or string between the magnetic tunnel junction cell string Into two ends mouth structure, N represents the row of array architecture to Hybrid connections in parallel, and it is big that M represents that the row of array architecture, N and M are respectively In or positive integer equal to 1.
- 4. one kind according to claim 3 balances magneto-resistor frequency mixer, it is characterised in that：The magneto-resistor bridge arm (31, 32) sensitive axes of the magnetic tunnel-junction in are each perpendicular to the sense of current of the first spiral winding (40), the magneto-resistor counter-jib (33) sensitive axes of the magnetic tunnel-junction in are each perpendicular to the sense of current of the second spiral winding (44), first subregion (41) The sensitivity axial direction characteristics of geomagnetic field distribution of the magnetic tunnel-junction in interior magnetic tunnel-junction and the second subregion (42) is in reverse.
- 5. the one kind according to claim 3 or 4 balances magneto-resistor frequency mixer, it is characterised in that：First subregion (41) magnetic tunnel-junction in is identical with the attachment structure of the magnetic tunnel-junction in second subregion (42), and is symmetrical arranged.
- 6. the one kind according to claim 3 or 4 balances magneto-resistor frequency mixer, it is characterised in that：The resistance of the magnetic tunnel-junction in first subregion (41) and the second subregion (42) respectively with first helix The magnetic tunnel-junction sensitivity axial magnetic field that circle (40) is produced is linear；The magnetic tunnel-junction that the resistance of the magnetic tunnel-junction in the 3rd subregion (43) is produced with second spiral winding (44) Sensitive axial magnetic field is linear.
- 7. the one kind according to claim 3 or 4 balances magneto-resistor frequency mixer, it is characterised in that：First subregion (41) sense of current of the magnetic tunnel-junction in and the second subregion (42) perpendicular or parallel to first spiral winding (40), institute State the sense of current of the magnetic tunnel-junction in the 3rd subregion (43) perpendicular or parallel to second spiral winding (44).
- 8. one kind according to claim 1 balances magneto-resistor frequency mixer, it is characterised in that：The first frequency signal source is led to Cross active or passive mode to be connected with first spiral winding (40), the second frequency signal source is by passive or active side Formula is connected with second spiral winding (44), and the mixed frequency signal passes through passive or active mode and the balance bridge type magnetic resistance The signal output part of sensor is connected.
- 9. one kind according to claim 1 balances magneto-resistor frequency mixer, it is characterised in that：The spiral winding (4) is height Conductivity metal material coil, the high conductivity metal include one or more in copper, gold, silver, aluminum and tantalum, the magnetic cup Cover layer (2) for high magnetic permeability ferrimag layer, the high magnetic permeability ferrimag include NiFe, CoFeSiB, CoZrNb, One or more in CoFeB, FeSiB and FeSiBNbCu.
- 10. one kind according to claim 1 balances magneto-resistor frequency mixer, it is characterised in that：Spiral winding (4) thickness For 1-20 μm, the width of the spiral winding (4) is 5-40 μm, and the spacing between two adjacent spiral windings is 10-100 μm, Magnetic masking layer (2) thickness is 1-20 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620899967.2U CN206077338U (en) | 2016-08-18 | 2016-08-18 | A kind of balance magneto-resistor frequency mixer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620899967.2U CN206077338U (en) | 2016-08-18 | 2016-08-18 | A kind of balance magneto-resistor frequency mixer |
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| CN206077338U true CN206077338U (en) | 2017-04-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160670A (en) * | 2016-08-18 | 2016-11-23 | 江苏多维科技有限公司 | A kind of balance magneto-resistor frequency mixer |
| CN108983119A (en) * | 2018-02-12 | 2018-12-11 | 黑龙江大学 | A kind of single-chip integration two-dimensional magnetic vector sensor and its integrated manufacture craft |
-
2016
- 2016-08-18 CN CN201620899967.2U patent/CN206077338U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160670A (en) * | 2016-08-18 | 2016-11-23 | 江苏多维科技有限公司 | A kind of balance magneto-resistor frequency mixer |
| WO2018033125A1 (en) * | 2016-08-18 | 2018-02-22 | 江苏多维科技有限公司 | Balanced magnetoresistance frequency mixer |
| US10873294B2 (en) | 2016-08-18 | 2020-12-22 | MultiDimension Technology Co., Ltd. | Balanced magnetoresistive frequency mixer |
| CN108983119A (en) * | 2018-02-12 | 2018-12-11 | 黑龙江大学 | A kind of single-chip integration two-dimensional magnetic vector sensor and its integrated manufacture craft |
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