CN106712719A - Orthogonal inductance-capacitance voltage-controlled oscillator with low power consumption and low phase noise - Google Patents
Orthogonal inductance-capacitance voltage-controlled oscillator with low power consumption and low phase noise Download PDFInfo
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- CN106712719A CN106712719A CN201611103626.0A CN201611103626A CN106712719A CN 106712719 A CN106712719 A CN 106712719A CN 201611103626 A CN201611103626 A CN 201611103626A CN 106712719 A CN106712719 A CN 106712719A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
- H03B5/24—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being semiconductor device
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B27/00—Generation of oscillations providing a plurality of outputs of the same frequency but differing in phase, other than merely two anti-phase outputs
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Abstract
The invention discloses an orthogonal inductance-capacitance voltage-controlled oscillator with low power consumption and low phase noise, which comprises two voltage-controlled oscillators VCO with the same structure, an MOS transistor NM4 in a diode connection mode and a low-pass RC filter LPF, wherein each VCO comprises an LC resonance network formed by an inductor and a distributed varactor structural circuit, a negative resistance differential pair transistors with upper P and lower N being complementary, a series coupling tube connected with the negative resistance differential pair transistors with upper P and lower N being complementary and tail current tube, and the negative resistance differential pair transistors with upper P and lower N being complementary are connected with the LC resonance network; the series coupling tubes in the two VCOs are connected; and the MOS transistor NM4 in the diode connection mode, the low-pass RC filter LPF and the tail current tubes in the two VCOs are sequentially connected to form a current mirror. The scheme disclosed by the invention has the characteristics of low power consumption, low phase noise, low phase error and high linear gain, and is applicable to phase-locked loop type frequency synthesizers.
Description
Technical field
The present invention relates to technical field of radio frequency integrated circuits, more particularly to a kind of orthogonal inductance of low-power consumption low phase noise
Capacitance voltage-controlled oscillator.
Background technology
In recent years, developing rapidly with Modern wireless communication technology, wireless portable devices are popularized rapidly, and people are for electricity
The raising of sub- may move of product requirement have received the limitation of battery capacity development, and low power dissipation design is increasingly by the weight of people
Depending on.Meanwhile, zero intermediate frequency and Low Medium Frequency transceiver are applied to wirelessly more and more due to its low-power consumption, low cost and high integration
In GSM.Orthogonal signalling are needed in the transceiver of zero intermediate frequency and low intermediate frequency structure to realize orthogonal modulation and demodulation,
The voltage controlled oscillator (VCO) that exact quadrature phase output can be realized of such a low-power consumption low phase noise turns into transceiver
Key modules.
At present, realizing the method for quadrature phase output voltage controlled oscillator has various.The first is resistance capacitance (RC) multiphase
Wave filter, its phase shift is closely related with RC values, is easily influenceed by (PVT) of technique, voltage and temperature, while RC multiphase filterings
Device circuit can cause signal attenuation and introduce Resistance Thermal Noise, need extra amplifying stage to amplify signal, and this has also been introduced into big
System power dissipation.Second is to use ring oscillator, is used in that phase noise requirements are not high and working frequency ring oscillator more
In the case of relatively low.Time delay series in ring oscillator, certain phase is exported per one-level, and series is more, defeated
Go out number of phases more, while time delay is bigger, produced maximum output frequency is smaller.The third is VCO two divided-frequency structures, will
VCO vibrate twice target frequency, then direct two divided-frequency realize it is orthogonal, because VCO and frequency divider are all operated in target frequency
Doubled frequency at, cause power consumption to increase, and orthogonal performance can be influenceed by VCO output waveform dutycycles.4th kind of side
Method is, using orthogonal voltage-controlled vibrator (QVCO), to be directly coupling in two identical LC voltage controlled oscillators (LC-VCO)
Together, because its output has more preferable phase noise performance and orthogonal property, QVCO is widely used.
QVCO be first by Rofougaran et al. 1996 propose, its structure as shown in Figure 1, coupling in this structure
Pipe and paralleled power switches (referred to as P-QVCO) are closed, the width ratio between definition coupling pipe and switching tube is stiffness of coupling.In QVCO
In, the various mismatches between two LC-VCO can influence quadrature signal amplitude and phase mismatch, and wherein amplitude mismatch can be by defeated
Going out buffer carries out amplitude limit regulation, and amplitude mismatch does not have corresponding regulation measure, therefore phase error is a weight of QVCO
Want index.In P-QVCO, phase error has very strong functional relation with stiffness of coupling, causes phase error and phase noise
Both exist compromise, and the noise that parallel coupled pipe is introduced can be directly entered resonator, deteriorate phase noise.
Andreani et al. is proposed 2002 and will be coupled the QVCO structures (referred to as S-QVCO) that pipe is connected with switching tube, its
Structure is as shown in Figure 2.Although phase error is only the minorant of stiffness of coupling in the program, can simultaneously optimize phase mistake
Difference and phase noise performance, but power consumption and phase noise are still higher, it is necessary to further improved.
The content of the invention
It is an object of the invention to provide a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise, with low
The characteristics of power consumption, low phase noise, low phase error and High Linear gain, it is adaptable in phase-locked ring type frequency synthesizer.
The purpose of the present invention is achieved through the following technical solutions：
A kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise, including：Two with mutually isostructural
Voltage controlled oscillator VCO, the metal-oxide-semiconductor NM4 and low pass R/C filters LPF of diode connection；
Wherein, every VCO includes：The LC resonant networks and LC that inductance is constituted with distributed varactor structure circuit are humorous
The series connection that N complementary negative resistance differential pair tube and the negative resistance differential pair tube complementary with N under upper P are connected under the connected upper P of vibrating network
Coupling pipe and tail current pipe；
Series coupled pipe in two VCO is connected；Metal-oxide-semiconductor NM4, the low pass R/C filters LPF and two of diode connection
Tail current pipe in individual VCO is sequentially connected composition current mirror.
The LC resonant networks that the inductance is constituted with distributed varactor structure circuit include：
Distributed varactor structure circuit includes：First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4,
First resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the first varactor Cv1, the second varactor Cv2, the 3rd
Varactor Cv3 and the 4th varactor Cv4；Wherein：
The one termination first voltage output end of the first electric capacity C1, the other end and first resistor R1 and the first varactor Cv1 phases
Even；The one termination second voltage output end of the second electric capacity C2, the other end is connected with second resistance R2 and the second varactor Cv2；The
The one termination first voltage output end of three electric capacity C3, the other end is connected with 3rd resistor R3 and the 3rd varactor Cv3；4th electric capacity
The one termination second voltage output end of C4, the other end is connected with the 4th resistance R4 and the 4th varactor Cv4；First resistor R1's is another
One end is connected with the other end of second resistance R2, meets the first bias voltage VB1；The other end of 3rd resistor R3 and the 4th resistance R4
The other end be connected, meet the second bias voltage VB2；The other end of four varactor Cv1~Cv4 is connected together, and connects control electricity
Pressure Vcont；
The two ends of inductance L connect the first voltage output end of VCO and second voltage output end respectively, so as to distributed transfiguration
The LC resonant networks of tubular construction circuit composition.
N complementary negative resistance differential pair tube includes under the upper P：First switch pipe PM1, second switch pipe PM2, the 3rd switch
Pipe NM1 and the 4th switching tube NM2；Wherein：
The drain terminal of first switch pipe PM1 is connected with the drain terminal of the 3rd switching tube NM1, used as the first voltage output end of VCO；
The drain terminal of second switch pipe PM2 is connected with the drain terminal of the 4th switching tube NM2, used as the second voltage output end of VCO；
The grid end of first switch pipe PM1 is all connected with second voltage output end, second switch with the grid end of the 3rd switching tube NM1
The grid end of pipe PM2 is connected first voltage output end with the grid end of the 4th switching tube NM2；
N complementary negative resistance differential pair tube is equivalent to negative resistance under upper P, after being connected with LC resonant networks, LC resonant networks is entered
Row energy compensating.
Series coupled pipe includes：First coupling pipe PMc1 couples pipe PMc2 with second；Wherein：
First coupling pipe PMc1 couples the common source termination power of pipe PMc2 with second, and the first drain terminal for coupling pipe PMc1 connects the
The source of one switching tube PM1, the drain terminal of the second coupling pipe PMc2 connects the source of second switch pipe PM2.
The tail current pipe is NM3, and its drain terminal is connected with the 3rd switching tube NM1 with the common source end of the 4th switching tube NM2, source
End ground connection, for VCO provides direct current biasing.
Series coupled pipe in described two VCO is connected and includes：
Two VCO are designated as VCO_A and VCO_B respectively, and series coupled pipe therein is PMOS；
VCO_A includes first voltage output node QP and second voltage output node QN, the series coupled pipe bag in VCO_A
Include the first coupling pipe PMc1a and pipe PMc2a is coupled with second, the common source that the first coupling pipe PMc1a couples pipe PMc2a with second is terminated
Power supply；VCO_B includes that the series coupled pipe of first voltage output node IP and second voltage output node IN, VCO_B includes the
One coupling pipe PMc1b couples pipe PMc2b, the first coupling pipe PMc1b with second and the common source termination electricity of pipe PMc2b is coupled with second
Source；
The first voltage output end IP of VCO_B connects the grid end of the first coupling pipe PMc1a of VCO_A, the second voltage of VCO_B
Output end IN connects the grid end of the second coupling pipe PMc2a of VCO_A, and the first voltage output end QP of VCO_A connects second coupling of VCO_B
The grid end of pipe PMc2b is closed, the second voltage output end QN of VCO_A connects the grid end of the first coupling pipe PMc1b of VCO_B.
Tail current pipe in metal-oxide-semiconductor NM4, the low pass R/C filters LPF and two VCO of diode connection is sequentially connected structure
Include into current mirror：
The drain terminal of the NM4 of diode connection is connected with grid end, connects current source, and source ground connection, grid end is filtered by low pass RC
Device LPF, the grid end with the tail current pipe NM3b in tail current pipe NM3a and VCO_B in VCO_A is connected.
As seen from the above technical solution provided by the invention, 1) oscillating unit of orthogonal voltage-controlled vibrator uses upper P
Lower N cross-couplings complementary structures, such complementary structure realizes current multiplexing, is only needed in the case where mutual conductance is certain smaller
Electric current, the power consumption of circuit can be effectively reduced.2) low phase noise is realized by following three points：QVCO is using PMOS series connection couplings
The mode of conjunction, coupling pipe is connected into Cascode structures with switching tube, effectively reduces the noise contribution of coupling pipe；It is identical to obtain
Mutual conductance, the size of PMOS is greater than NMOS, and the 1/ of coupling pipe is effectively reduced rather than NMOS as coupling pipe from PMOS
F noises；In current mirror, NM4 compared to tail current pipe size it is smaller, add RC low pass filters can filter part NM4 and
The noise of additional power source.Meanwhile, phase error is only the minorant of stiffness of coupling, and phase error and phase noise performance can be with
Optimized simultaneously.3) distributed varactor structure is used, using two groups of varactors pair, respectively by bias voltage VB1 and VB2
Its range of linearity is controlled, the range of linearity of control voltage can be expanded, improve the linearity of QVCO gains.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
The type QVCO circuit diagrams of parallel coupled in the prior art that Fig. 1 is provided for background of invention；
The type QVCO circuit diagrams of series coupled in the prior art that Fig. 2 is provided for background of invention；
Fig. 3 is a kind of orthogonal LC voltage controlled oscillator electricity of low-power consumption low phase noise provided in an embodiment of the present invention
Road schematic diagram；
Fig. 4 is distributed varactor structure circuit diagram provided in an embodiment of the present invention；
Fig. 5 is the simulation result schematic diagram of the transient waveform of QVCO provided in an embodiment of the present invention；
Fig. 6 is the simulation result schematic diagram of the phase noise of QVCO provided in an embodiment of the present invention；
Fig. 7 is the simulation result schematic diagram of the phase error of QVCO provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Inventive embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
The embodiment of the present invention provides a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise, such as Fig. 3 institutes
Show, it mainly includes：Two there is mutually isostructural voltage controlled oscillator VCO (being designated as VCO_A and VCO_B respectively), diode to connect
The metal-oxide-semiconductor NM4 and low pass R/C filters LPF for connecing；
Wherein, every VCO includes：The LC resonant networks and LC that inductance is constituted with distributed varactor structure circuit are humorous
The series connection that N complementary negative resistance differential pair tube and the negative resistance differential pair tube complementary with N under upper P are connected under the connected upper P of vibrating network
Coupling pipe and tail current pipe；
Series coupled pipe in two VCO is connected；Metal-oxide-semiconductor NM4, the low pass R/C filters LPF and two of diode connection
Tail current pipe in individual VCO is sequentially connected composition current mirror.
Below for the tool of N under LC resonant networks, upper P complementary negative resistance differential pair tube, series coupled pipe and tail current pipe
Body structure is described in detail.
1st, LC resonant networks.
It includes：Distributed varactor structure circuit and inductance.
1) as shown in figure 4, distributed varactor structure circuit includes：First electric capacity C1, the second electric capacity C2, the 3rd electric capacity
C3, the 4th electric capacity C4, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the first varactor Cv1, second
Varactor Cv2, the 3rd varactor Cv3 and the 4th varactor Cv4；Wherein：
The one termination first voltage output end of the first electric capacity C1, the other end and first resistor R1 and the first varactor Cv1 phases
Even；The one termination second voltage output end of the second electric capacity C2, the other end is connected with second resistance R2 and the second varactor Cv2；The
The one termination first voltage output end of three electric capacity C3, the other end is connected with 3rd resistor R3 and the 3rd varactor Cv3；4th electric capacity
The one termination second voltage output end of C4, the other end is connected with the 4th resistance R4 and the 4th varactor Cv4；First resistor R1's is another
One end is connected with the other end of second resistance R2, meets the first bias voltage VB1；The other end of 3rd resistor R3 and the 4th resistance R4
The other end be connected, meet the second bias voltage VB2；The other end of four varactor Cv1~Cv4 is connected together, and connects control electricity
Pressure Vcont.
2) two ends of inductance L connect the first voltage output end and second voltage output end of VCO respectively, so as to become with distribution
Hold the LC resonant networks of tubular construction circuit composition.
It will be understood by those skilled in the art that the tail portion of each component above is to represent plus a or b
Component in VCO_A or VCO_B；For example, the tail portion of the first electric capacity C1 above adds a, i.e. the first electric capacity C1a,
Then it is expressed as the component in VCO_A；The tail portion of the first electric capacity C1 above adds b, i.e. the first electric capacity C1b, then it represents that
It is the component in VCO_B.Certainly, what each component for occurring hereinafter was also similar to, therefore repeat no more, but above-mentioned mark
Representation be intended merely to distinguish, not scheme is limited in itself.
2nd, negative resistance differential pair tube N complementary under upper P.
It mainly includes：First switch pipe PM1, second switch pipe PM2, the 3rd switching tube NM1 and the 4th switching tube NM2；
Wherein：
The drain terminal of first switch pipe PM1 is connected with the drain terminal of the 3rd switching tube NM1, used as the first voltage output end of VCO；
Second switch pipe PM2 is connected with the drain terminal of the 4th switching tube NM2, used as the second voltage output end of VCO；
The grid end of first switch pipe PM1 is all connected with second voltage output end, second switch with the grid end of the 3rd switching tube NM1
The grid end of pipe PM2 is connected first voltage output end with the grid end of the 4th switching tube NM2；
N complementary negative resistance differential pair tube is equivalent to negative resistance under upper P, after being connected with LC resonant networks, LC resonant networks is entered
Row energy compensating.
3rd, series coupled pipe.
It mainly includes：First coupling pipe PMc1 couples pipe PMc2 with second；Wherein：
First coupling pipe PMc1 couples the common source termination power of pipe PMc2 with second, and the first drain terminal for coupling pipe PMc1 connects the
The source of one switching tube PM1, the drain terminal of the second coupling pipe PMc2 connects the source of second switch pipe PM2.
4th, tail current pipe.
Tail current pipe is NM3, and its drain terminal is connected with the 3rd switching tube NM1 with the common source end of the 4th switching tube NM2, and source connects
Ground, for VCO provides direct current biasing.
In the embodiment of the present invention, VCO_A is connected with VCO_B by series coupled pipe；Series coupled pipe therein is
PMOS.From the point of view of accompanying drawing 3, VCO_A includes first voltage output node QP and second voltage output node QN, in VCO_A
Series coupled pipe include that the first coupling pipe PMc1a couples pipe PMc2a with second, first couples pipe PMc1a couples pipe with second
The common source termination power of PMc2a；VCO_B includes the string of first voltage output node IP and second voltage output node IN, VCO_B
Connection coupling pipe includes that the first coupling pipe PMc1b couples pipe PMc2b, the first coupling pipe PMc1b with second and couples pipe PMc2b with second
Common source termination power；
The first voltage output end IP of VCO_B connects the grid end of the first coupling pipe PMc1a of VCO_A, the second voltage of VCO_B
Output end IN connects the grid end of the second coupling pipe PMc2a of VCO_A, and the first voltage output end QP of VCO_A connects second coupling of VCO_B
The grid end of pipe PMc2b is closed, the second voltage output end QN of VCO_A connects the grid end of the first coupling pipe PMc1b of VCO_B.
Additionally, the drain terminal of the NM4 of diode connection is connected with grid end, current source is connect, source is grounded, and grid end is by low pass RC
Wave filter LPF, the grid end with the tail current pipe NM3b in tail current pipe NM3a and VCO_B in VCO_A is connected.
It will be understood by those skilled in the art that the polarity of metal-oxide-semiconductor can with reference to the accompanying drawings shown in 3~4 structure determine；Together
When, it is also possible to mark according to corresponding metal-oxide-semiconductor determines, i.e., be NMOS tube with what N started, for example, the 3rd switching tube NM1 and
4th switching tube NM2 is NMOS tube；PMOS is with what P started, for example, first switch pipe PM1, second switch pipe PM2
It is PMOS.
The such scheme of the embodiment of the present invention, mainly has the following advantages that relative to prior art：
1) oscillating unit of orthogonal voltage-controlled vibrator is using N cross-couplings complementary structures, such complementary structure reality under upper P
Current multiplexing is showed, smaller electric current has been only needed in the case where mutual conductance is certain, the power consumption of circuit can be effectively reduced.
2) low phase noise is realized by following three points：QVCO by the way of PMOS series coupleds, manage and switching tube by coupling
Cascode structures are connected into, the noise contribution of coupling pipe is effectively reduced；To obtain identical mutual conductance, the size of PMOS is greater than
NMOS, the 1/f noise of coupling pipe is effectively reduced from PMOS as coupling pipe rather than NMOS；In current mirror, NM4 phases
Size than tail current pipe is smaller, adds RC low pass filters to filter the noise of part NM4 and additional power source.Meanwhile, phase
Position error is only the minorant of stiffness of coupling, and phase error and phase noise performance can be optimized simultaneously.
3) distributed varactor structure is used, using two groups of varactors pair, is controlled by bias voltage VB1 and VB2 respectively
Its range of linearity, can expand the range of linearity of control voltage, improve the linearity of QVCO gains.
On the other hand, in order to be verified to the present invention, the QVCO that present embodiment is proposed is under 130nm CMOS technologies
Emulated, under the supply voltage of 1.5V, QVCO consumes the electric current of 950uA, and centre frequency is 2.4GHz, in 1MHz frequency deviations
The phase noise at place is -123.9dBc/Hz, and maximum phase error is 0.7 degree.Our conventional quality factor FOM shake to characterize
The performance of device is swung, the formula according to FOM is as follows：
Wherein, f0Centre frequency is represented, Δ f represents frequency deviation, and P represents power consumption, and (Δ f) represents that the phase at frequency deviation is made an uproar to PN
Sound；
The FOM for obtaining QVCO is up to 191.4, and the surface invention has prominent advantage in low-power consumption and low phase noise.
Accompanying drawing 5 is the simulation result of the transient waveform of QVCO, and accompanying drawing 6 is the simulation result of the phase noise of QVCO, and accompanying drawing 7 is QVCO's
The simulation result of phase error.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (7)
1. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise, it is characterised in that including：Two have phase
Isostructural voltage controlled oscillator VCO, the metal-oxide-semiconductor NM4 and low pass R/C filters LPF of diode connection；
Wherein, every VCO includes：LC resonant networks and LC Resonance Neural Networks that inductance is constituted with distributed varactor structure circuit
The series coupled that N complementary negative resistance differential pair tube and the negative resistance differential pair tube complementary with N under upper P are connected under the connected upper P of network
Pipe and tail current pipe；
Series coupled pipe in two VCO is connected；Metal-oxide-semiconductor NM4, the low pass R/C filters LPF and two VCO of diode connection
In tail current pipe be sequentially connected composition current mirror.
2. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise according to claim 1, its feature
It is that the LC resonant networks that the inductance is constituted with distributed varactor structure circuit include：
Distributed varactor structure circuit includes：First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, first
Resistance R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the first varactor Cv1, the second varactor Cv2, the 3rd transfiguration
Pipe Cv3 and the 4th varactor Cv4；Wherein：
The one termination first voltage output end of the first electric capacity C1, the other end is connected with first resistor R1 and the first varactor Cv1；The
The one termination second voltage output end of two electric capacity C2, the other end is connected with second resistance R2 and the second varactor Cv2；3rd electric capacity
The one termination first voltage output end of C3, the other end is connected with 3rd resistor R3 and the 3rd varactor Cv3；The one of 4th electric capacity C4
Termination second voltage output end, the other end is connected with the 4th resistance R4 and the 4th varactor Cv4；The other end of first resistor R1 with
The other end of second resistance R2 is connected, and meets the first bias voltage VB1；The other end of 3rd resistor R3 is another with the 4th resistance R4's
End is connected, and meets the second bias voltage VB2；The other end of four varactor Cv1~Cv4 is connected together, and connects control voltage
Vcont；
The two ends of inductance L connect the first voltage output end of VCO and second voltage output end respectively, so as to distributed varactor knot
The LC resonant networks of structure circuit composition.
3. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise according to claim 1, its feature
It is that N complementary negative resistance differential pair tube includes under the upper P：First switch pipe PM1, second switch pipe PM2, the 3rd switching tube
NM1 and the 4th switching tube NM2；Wherein：
The drain terminal of first switch pipe PM1 is connected with the drain terminal of the 3rd switching tube NM1, used as the first voltage output end of VCO；Second
The drain terminal of switching tube PM2 is connected with the drain terminal of the 4th switching tube NM2, used as the second voltage output end of VCO；
The grid end of first switch pipe PM1 is all connected with second voltage output end, second switch pipe with the grid end of the 3rd switching tube NM1
The grid end of PM2 is connected first voltage output end with the grid end of the 4th switching tube NM2；
N complementary negative resistance differential pair tube is equivalent to negative resistance under upper P, after being connected with LC resonant networks, energy is carried out to LC resonant networks
Amount compensation.
4. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise according to claim 3, its feature
It is that series coupled pipe includes：First coupling pipe PMc1 couples pipe PMc2 with second；Wherein：
First coupling pipe PMc1 couples the common source termination power of pipe PMc2 with second, and the drain terminal of the first coupling pipe PMc1 connects first and opens
The source of pipe PM1 is closed, the drain terminal of the second coupling pipe PMc2 connects the source of second switch pipe PM2.
5. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise according to claim 3, its feature
It is that the tail current pipe is NM3, its drain terminal is connected with the 3rd switching tube NM1 with the common source end of the 4th switching tube NM2, source
Ground connection, for VCO provides direct current biasing.
6. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise according to claim 1, its feature
It is that the series coupled pipe in described two VCO is connected and includes：
Two VCO are designated as VCO_A and VCO_B respectively, and series coupled pipe therein is PMOS；
VCO_A includes first voltage output node QP and second voltage output node QN, and the series coupled pipe in VCO_A includes the
One coupling pipe PMc1a couples pipe PMc2a, the first coupling pipe PMc1a with second and the common source termination electricity of pipe PMc2a is coupled with second
Source；VCO_B includes that first voltage output node IP includes first with the series coupled pipe of second voltage output node IN, VCO_B
Coupling pipe PMc1b couples pipe PMc2b, the first coupling pipe PMc1b with second and the common source termination power of pipe PMc2b is coupled with second；
The first voltage output end IP of VCO_B connects the grid end of the first coupling pipe PMc1a of VCO_A, the second voltage output of VCO_B
End IN connects the grid end of the second coupling pipe PMc2a of VCO_A, and the first voltage output end QP of VCO_A connects the second coupling pipe of VCO_B
The grid end of PMc2b, the second voltage output end QN of VCO_A connects the grid end of the first coupling pipe PMc1b of VCO_B.
7. a kind of orthogonal LC voltage controlled oscillator of low-power consumption low phase noise according to claim 6, its feature
It is that the tail current pipe in metal-oxide-semiconductor NM4, the low pass R/C filters LPF and two VCO of diode connection is sequentially connected composition
Current mirror includes：
The drain terminal of the NM4 of diode connection is connected with grid end, connects current source, and source is grounded, and grid end is by low pass R/C filters
LPF, the grid end with the tail current pipe NM3b in tail current pipe NM3a and VCO_B in VCO_A is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103626.0A CN106712719A (en) | 2016-12-05 | 2016-12-05 | Orthogonal inductance-capacitance voltage-controlled oscillator with low power consumption and low phase noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103626.0A CN106712719A (en) | 2016-12-05 | 2016-12-05 | Orthogonal inductance-capacitance voltage-controlled oscillator with low power consumption and low phase noise |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947756A (en) * | 2017-11-28 | 2018-04-20 | 中科亿海微电子科技（苏州）有限公司 | Difference CMOS process circuits and oscillatory system |
| CN109525198A (en) * | 2018-12-15 | 2019-03-26 | 华南理工大学 | A kind of orthogonal voltage-controlled vibrator circuit of included phase shift |
| CN110719070A (en) * | 2019-09-29 | 2020-01-21 | 天津大学 | Low-power consumption voltage-controlled oscillator based on dynamic threshold technology |
| CN112187179A (en) * | 2020-09-29 | 2021-01-05 | 西安博瑞集信电子科技有限公司 | Single-subband voltage-controlled oscillator with wide frequency range |
| CN113507266A (en) * | 2021-07-19 | 2021-10-15 | 东南大学 | Terahertz voltage-controlled oscillator based on multi-oscillation core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080143446A1 (en) * | 2006-12-15 | 2008-06-19 | Chih-Wei Yao | Low Phase-Noise Oscillator |
| CN101517888A (en) * | 2006-09-21 | 2009-08-26 | Iti苏格兰有限公司 | Voltage-controlled oscillator |
| CN102170289A (en) * | 2011-05-28 | 2011-08-31 | 西安电子科技大学 | Low-power-consumption orthogonality LC (inductance/capacitance) voltage controlled oscillator base on current multiplex |
| CN104852732A (en) * | 2015-05-28 | 2015-08-19 | 中国科学技术大学先进技术研究院 | Voltage-controlled oscillator with low power dissipation, low noise and high linear gain |
| CN106100585A (en) * | 2016-06-02 | 2016-11-09 | 中国科学技术大学先进技术研究院 | A kind of wideband orthogonal voltage controlled oscillator of the low phase error of low noise |
-
2016
- 2016-12-05 CN CN201611103626.0A patent/CN106712719A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517888A (en) * | 2006-09-21 | 2009-08-26 | Iti苏格兰有限公司 | Voltage-controlled oscillator |
| US20080143446A1 (en) * | 2006-12-15 | 2008-06-19 | Chih-Wei Yao | Low Phase-Noise Oscillator |
| CN102170289A (en) * | 2011-05-28 | 2011-08-31 | 西安电子科技大学 | Low-power-consumption orthogonality LC (inductance/capacitance) voltage controlled oscillator base on current multiplex |
| CN104852732A (en) * | 2015-05-28 | 2015-08-19 | 中国科学技术大学先进技术研究院 | Voltage-controlled oscillator with low power dissipation, low noise and high linear gain |
| CN106100585A (en) * | 2016-06-02 | 2016-11-09 | 中国科学技术大学先进技术研究院 | A kind of wideband orthogonal voltage controlled oscillator of the low phase error of low noise |
Non-Patent Citations (1)
| Title |
|---|
| CHEOL-HOE KIM 等: ""A low phase noise and low power series coupled quadrature VCO using reconfigurable LC tank"", 《2008 IEEE RADIO AND WIRELESS SYMPOSIUM》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947756A (en) * | 2017-11-28 | 2018-04-20 | 中科亿海微电子科技（苏州）有限公司 | Difference CMOS process circuits and oscillatory system |
| CN109525198A (en) * | 2018-12-15 | 2019-03-26 | 华南理工大学 | A kind of orthogonal voltage-controlled vibrator circuit of included phase shift |
| WO2020119292A1 (en) * | 2018-12-15 | 2020-06-18 | 华南理工大学 | Quadrature voltage-controlled oscillator circuit with phase shift |
| US11245359B2 (en) | 2018-12-15 | 2022-02-08 | South China University Of Technology | Quadrature voltage-controlled oscillator circuit with phase shift |
| CN109525198B (en) * | 2018-12-15 | 2024-04-23 | 华南理工大学 | Quadrature voltage controlled oscillator circuit with phase shift |
| CN110719070A (en) * | 2019-09-29 | 2020-01-21 | 天津大学 | Low-power consumption voltage-controlled oscillator based on dynamic threshold technology |
| CN110719070B (en) * | 2019-09-29 | 2023-05-12 | 天津大学 | Low-power consumption voltage-controlled oscillator based on dynamic threshold technology |
| CN112187179A (en) * | 2020-09-29 | 2021-01-05 | 西安博瑞集信电子科技有限公司 | Single-subband voltage-controlled oscillator with wide frequency range |
| CN113507266A (en) * | 2021-07-19 | 2021-10-15 | 东南大学 | Terahertz voltage-controlled oscillator based on multi-oscillation core |
| CN113507266B (en) * | 2021-07-19 | 2023-08-25 | 东南大学 | Terahertz voltage-controlled oscillator based on multiple oscillation cores |
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