CN106301233B - A kind of current multiplication type low-voltage current multiplexing passive frequency mixer - Google Patents
A kind of current multiplication type low-voltage current multiplexing passive frequency mixer Download PDFInfo
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- CN106301233B CN106301233B CN201610631673.6A CN201610631673A CN106301233B CN 106301233 B CN106301233 B CN 106301233B CN 201610631673 A CN201610631673 A CN 201610631673A CN 106301233 B CN106301233 B CN 106301233B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
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Abstract
The invention discloses a kind of current multiplication type low-voltage current multiplexing passive frequency mixers, including Complementary input structure transconductance stage, passive local oscillator switch and current multiplication type low-voltage trans-impedance amplifier；Current multiplication type low-voltage trans-impedance amplifier includes NMOS tube common-source amplifier, PMOS tube is total to bank tube and differential pair, it is that PMOS tube is total to bank tube promotion mutual conductance by NMOS tube common-source amplifier, it is identical that the mutual conductance pipe of differential pair with PMOS tube is total to bank tube size, and it is biased under identical DC current, the drain electrode that the grid of differential pair is total to bank tube with PMOS is connected, under the action of mutual conductance enhancing structure circuit, the source electrode that PMOS tube is total to bank tube is equivalent to virtual earth, mutual conductance pipe in differential pair replicates PMOS tube and is total to the electric current of bank tube and is injected into load, electric current after down coversion is doubled, to further improve conversion gain and improve noiseproof feature.
Description
Technical field
The present invention relates to a kind of current multiplication type low-voltage current multiplexing passive frequency mixers, belong to frequency mixer technology neck
Domain.
Background technology
The rapid proliferation of hand-held wireless device proposes increasingly higher demands to the low power dissipation design of RF receiving and transmission module.
In radio-frequency receiving system, as radio-frequency front-end key modules, power consumption levels occupy considerable frequency mixer in receives link
Share.Low power consumption design method and circuit structure for frequency mixer are always the research hotspot of industry, and reduce power supply electricity
Pressure and reduction bias current are the main paths for reducing power consumption, still need to consider how to realize higher turn while reducing power consumption
Change gain.
Invention content
Goal of the invention：In order to significantly reduce the power consumption levels of frequency mixer and improve conversion gain, the present invention proposes a kind of electricity
Multiplication type low-voltage current multiplexing passive frequency mixer is flowed, traditional passive frequency mixer is compared, the present invention reduces supply voltage at the same time
On the basis of bias current, higher conversion gain is realized.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：A kind of current multiplication type low-voltage electricity
Multiplexing passive frequency mixer, including Complementary input structure transconductance stage, passive local oscillator switch and current multiplication type low-voltage trans-impedance amplifier are flowed,
The Complementary input structure transconductance stage includes PMOS tube, and current multiplication type low-voltage trans-impedance amplifier is mutual conductance enhancing structure, electric current times
Increasing type low-voltage trans-impedance amplifier includes that NMOS tube common-source amplifier, PMOS tube are total to bank tube and differential pair, and differential pair includes PMOS
The mutual conductance pipe of pipe composition is that PMOS tube is total to bank tube promotion mutual conductance, current multiplication type low-voltage electricity by NMOS tube common-source amplifier
The input signal of stream multiplexing passive frequency mixer is inputted by Complementary input structure transconductance stage, passive local oscillator switch input local oscillation signal, complementary
The PMOS tube for inputting transconductance stage provides bias current by passive local oscillator switch for current multiplication type low-voltage trans-impedance amplifier, poor
Point to mutual conductance pipe and PMOS tube to be total to bank tube size identical, and be biased under identical DC current, the grid of differential pair and
The drain electrode that PMOS is total to bank tube is connected, and under the action of mutual conductance enhancing structure circuit, the source electrode that PMOS tube is total to bank tube is equivalent to virtual earth,
Mutual conductance pipe in differential pair replicates PMOS tube and is total to the electric current of bank tube and is injected into load, and the electric current after down coversion has been carried out again
Increase.
Preferably, the passive local oscillator switch includes the second NMOS tube NM2 and third NMOS tube NM3, current multiplication type
Low-voltage trans-impedance amplifier include the second PMOS tube PM2, third PMOS tube PM3, the 4th PMOS tube PM4, the 5th PMOS tube PM5,
6th PMOS tube PM6, the 7th PMOS tube PM7, the 8th PMOS tube PM8, the 4th NMOS tube NM4, the 5th NMOS tube NM5, third electricity
Hinder R3, the 4th resistance R4 and the second capacitance C2, wherein
The drain electrode of the second NMOS tube NM2 connects the drain electrode of third NMOS tube NM3, tie point be connected to Complementary input structure across
Lead the signal output end of grade, the grid of the second NMOS tube NM2 and third NMOS tube NM3 connects the anode of local oscillation signal and negative respectively
Pole, the source electrode of the second NMOS tube NM2 connect the source electrode of the second PMOS tube PM2, and the source electrode of third NMOS tube NM3 connects third PMOS tube
The top crown of the source electrode of PM3, the second capacitance C2 connects the source electrode of third NMOS tube NM3, and the bottom crown of the second capacitance C2 connects second
The source electrode of NMOS tube NM2, the drain electrode of the second PMOS tube PM2 are the output of current multiplication type low-voltage current multiplexing passive frequency mixer
Signal anode, the anode of 3rd resistor R3 meet the drain electrode of the second PMOS tube PM2, the cathode ground connection of 3rd resistor R3, the 2nd PMOS
The grid of pipe PM2 connects the drain electrode of the 4th NMOS tube NM4；
Source electrode, the source electrode of the 5th PMOS tube PM5 and the source electrode of the 6th PMOS tube PM6 of the 4th PMOS tube PM4 connects,
Its tie point connects supply voltage；The grid of 4th PMOS tube PM4, the grid of the 5th PMOS tube PM5 and the 6th PMOS tube PM6
Grid connects, and tie point connects third bias voltage；The drain electrode of 4th PMOS tube PM4 connects the drain electrode of the 4th NMOS tube NM4, and the 4th
The grid of NMOS tube NM4 connects the source electrode of the second NMOS tube NM2；The drain electrode of the grid, the 5th NMOS tube NM5 of third PMOS tube PM3
Drain electrode with the 5th PMOS tube PM3 connects, and the drain electrode of third PMOS tube PM3 is mixed for current multiplication type low-voltage current multiplexing passive
The output signal cathode of frequency device；The source electrode of 4th NMOS tube NM4 and the source electrode ground connection of the 5th NMOS tube NM5；5th NMOS tube NM5
Grid connect the source electrode of third PMOS tube PM3；The anode of 4th resistance R4 meets the drain electrode of third PMOS tube PM3, the 4th resistance R4
Cathode ground connection；Drain electrode, the source electrode of the 7th PMOS tube PM7 and the source electrode of the 8th PMOS tube PM8 of 6th PMOS tube PM6 connects,
The grid of 7th PMOS tube PM7 connects the grid of the second PMOS tube PM2, and the drain electrode of the 7th PMOS tube PM7 connects the second PMOS tube PM2's
Drain electrode, the grid of the 8th PMOS tube PM8 connect the grid of third PMOS tube PM3, and the drain electrode of the 8th PMOS tube PM8 connects third PMOS tube
The drain electrode of PM3.
Advantageous effect：Current multiplication type low-voltage current multiplexing passive frequency mixer proposed by the present invention, compared with prior art,
It has the following effects that：Current multiplication type low-voltage passive frequency mixer proposed by the present invention by transconductance stage, singly balanced switch to, across resistance
Amplifier is constituted；Transconductance stage is CMOS structure, can be biased at lower supply voltages；Trans-impedance amplifier is to incorporate mutual conductance bootstrapping
The cathode-input amplifier of technology uses the common-source amplifier structure of NMOS inputs to reduce supply voltage across resistance boostrap circuit；Across
It leads grade and current multiplexing is constituted with across resistance grade by the switching tube of frequency mixer, reduce global bias electric current.In addition, in order to realize more
High conversion gain, present invention introduces an additional differential pair, bank tube size is identical together for the mutual conductance pipe of the differential pair, and partially
Set under identical DC current, grid together bank tube grid be connected；Under the action of mutual conductance enhances circuit, total bank tube
Source electrode is equivalent to virtual earth.Mutual conductance pipe in differential pair will replicate the electric current of bank tube altogether and be injected into load.It thus will be after down coversion
Electric current doubled, to improve conversion gain and improve noiseproof feature.
Description of the drawings
Fig. 1 is the circuit diagram of the current multiplication type low-voltage current multiplexing passive frequency mixer of the present invention；
Fig. 2 is that the conversion gain of the current multiplication type low-voltage current multiplexing passive frequency mixer of the present invention becomes with input frequency
Change curve with the conversion gain of no current multiplication effect with the comparison diagram for inputting frequency variation curve, respectively with solid line and dotted line table
Show.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
It is as shown in Figure 1 the circuit diagram of the current multiplication type low-voltage current multiplexing passive frequency mixer of the present invention, including mutual
Input transconductance stage, passive local oscillator switch and current multiplication type low-voltage trans-impedance amplifier are mended, Complementary input structure transconductance stage includes the
One NMOS tube NM1, the first PMOS tube PM1, first resistor R1, second resistance R2 and the first capacitance C1, passive local oscillator switch include
Second NMOS tube NM2 and third NMOS tube NM3, the PMOS tube of transconductance stage is switched by singly balanced local oscillator to be provided for trans-impedance amplifier
Bias current, current multiplication type low-voltage trans-impedance amplifier are mutual conductance enhancing structure, including the second PMOS tube PM2, the 3rd PMOS
Pipe PM3, the 4th PMOS tube PM4, the 5th PMOS tube PM5, the 6th PMOS tube PM6, the 7th PMOS tube PM7, the 8th PMOS tube PM8,
4th NMOS tube NM4, the 5th NMOS tube NM5,3rd resistor R3, the 4th resistance R4 and the second capacitance C2, wherein the 4th NMOS tube
NM4 and the 5th NMOS tube constitute NOMS common-source amplifiers, and the 4th PMOS tube PM4 and the 5th PMOS tube PM5 constitute PMOS and be total to bank tube,
6th PMOS tube PM6, the 7th PMOS tube PM7 and the 8th PMOS tube PM8 constitute differential pair, are PMOS by NMOS common-source amplifiers
Bank tube promotes mutual conductance altogether, and bank tube size is identical together for the mutual conductance pipe of the differential pair, and is biased under identical DC current, grid
The grid of pole bank tube together is connected, and under the action of mutual conductance enhances circuit, the source electrode of bank tube is equivalent to virtual earth altogether, in differential pair
Mutual conductance pipe replicates the electric current of bank tube altogether and is injected into load, thus the electric current after down coversion is doubled, to improve
Conversion gain simultaneously improves noiseproof feature.
As shown in Figure 1, in the current multiplication type low-voltage trans-impedance amplifier of the present invention, the drain electrode of the second NMOS tube NM2 connects
The drain electrode of third NMOS tube NM3, tie point are connected to the signal output end of Complementary input structure transconductance stage, the second NMOS tube NM2 and
The grid of third NMOS tube NM3 connects the anode and cathode of local oscillation signal respectively, and the source electrode of the second NMOS tube NM2 connects the second PMOS tube
The source electrode of the source electrode of PM2, third NMOS tube NM3 connects the source electrode of third PMOS tube PM3, and the top crown of the second capacitance C2 connects third
The source electrode of NMOS tube NM3, the bottom crown of the second capacitance C2 connect the source electrode of the second NMOS tube NM2, and the drain electrode of the second PMOS tube PM2 is
The output signal anode of current multiplication type low-voltage current multiplexing passive frequency mixer, the anode of 3rd resistor R3 connect the second PMOS tube
The drain electrode of PM2, the cathode ground connection of 3rd resistor R3, the grid of the second PMOS tube PM2 connect the drain electrode of the 4th NMOS tube NM4；4th
The source electrode of the source electrode of PMOS tube PM4, the source electrode of the 5th PMOS tube PM5 and the 6th PMOS tube PM6 connects, and tie point connects power supply
Voltage；Grid, the grid of the 5th PMOS tube PM5 and the grid of the 6th PMOS tube PM6 of 4th PMOS tube PM4 connects, connection
Point connects third bias voltage；The drain electrode of 4th PMOS tube PM4 connects the drain electrode of the 4th NMOS tube NM4, the grid of the 4th NMOS tube NM4
Connect the source electrode of the second NMOS tube NM2；The drain electrode of the grid, the 5th NMOS tube NM5 of third PMOS tube PM3 and the 5th PMOS tube PM3
Drain electrode connect, the drain electrode of third PMOS tube PM3 is the output signal of current multiplication type low-voltage current multiplexing passive frequency mixer
Cathode；The source electrode of 4th NMOS tube NM4 and the source electrode ground connection of the 5th NMOS tube NM5；The grid of 5th NMOS tube NM5 connects third
The source electrode of PMOS tube PM3；The anode of 4th resistance R4 connects the drain electrode of third PMOS tube PM3, the cathode ground connection of the 4th resistance R4；The
Drain electrode, the source electrode of the 7th PMOS tube PM7 and the source electrode of the 8th PMOS tube PM8 of six PMOS tube PM6 connects, the 7th PMOS tube PM7
Grid connect the grid of the second PMOS tube PM2, the drain electrode of the 7th PMOS tube PM7 meets the drain electrode of the second PMOS tube PM2, the 8th PMOS
The grid of pipe PM8 connects the grid of third PMOS tube PM3, and the drain electrode of the 8th PMOS tube PM8 connects the drain electrode of third PMOS tube PM3.
As shown in Fig. 2, the current multiplication type passive frequency mixer conversion gain that solid line is the present invention changes with input frequency
The curve that curve changes with the conversion gain that dotted line is no current multiplication effect with input frequency, the two compare it is found that its local oscillator
Frequency is 2.4GHz；From figure 2 it can be seen that under conditions of no current doubling technology, the conversion gain at local frequency is
33dB；After having used current multiplication technology, the conversion gain at local frequency is 39dB, and 6dB is improved compared to the former.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (2)
1. a kind of current multiplication type low-voltage current multiplexing passive frequency mixer, it is characterised in that：Including Complementary input structure transconductance stage, nothing
Source local oscillator switch and current multiplication type low-voltage trans-impedance amplifier, the Complementary input structure transconductance stage includes PMOS tube, current multiplication
Type low-voltage trans-impedance amplifier is mutual conductance enhancing structure, and current multiplication type low-voltage trans-impedance amplifier includes the amplification of NMOS tube common source
Device, PMOS tube are total to bank tube and differential pair, and differential pair includes the mutual conductance pipe of PMOS tube composition, is by NMOS tube common-source amplifier
PMOS tube is total to bank tube and promotes mutual conductance, the input signal of current multiplication type low-voltage current multiplexing passive frequency mixer by Complementary input structure across
Grade input, passive local oscillator switch input local oscillation signal are led, the PMOS tube of Complementary input structure transconductance stage is switched by passive local oscillator as electricity
It flowing multiplication type low-voltage trans-impedance amplifier and bias current is provided, it is identical that mutual conductance pipe and the PMOS tube of differential pair are total to bank tube size, and
It is biased under identical DC current, the drain electrode that the grid of differential pair is total to bank tube with PMOS is connected, in mutual conductance enhancing structure circuit
Under the action of, the source electrode that PMOS tube is total to bank tube is equivalent to virtual earth, and the mutual conductance pipe in differential pair replicates the electric current that PMOS tube is total to bank tube
And it is injected into load, the electric current after down coversion is doubled.
2. current multiplication type low-voltage current multiplexing passive frequency mixer according to claim 1, it is characterised in that：The nothing
Source local oscillator switch includes the second NMOS tube NM2 and third NMOS tube NM3, and current multiplication type low-voltage trans-impedance amplifier includes second
PMOS tube PM2, third PMOS tube PM3, the 4th PMOS tube PM4, the 5th PMOS tube PM5, the 6th PMOS tube PM6, the 7th PMOS tube
PM7, the 8th PMOS tube PM8, the 4th NMOS tube NM4, the 5th NMOS tube NM5,3rd resistor R3, the 4th resistance R4 and the second capacitance
C2, wherein
The drain electrode of the second NMOS tube NM2 connects the drain electrode of third NMOS tube NM3, and tie point is connected to Complementary input structure transconductance stage
Signal output end, the grid of the second NMOS tube NM2 and third NMOS tube NM3 connects the anode and cathode of local oscillation signal respectively,
The source electrode of two NMOS tube NM2 connects the source electrode of the second PMOS tube PM2, and the source electrode of third NMOS tube NM3 connects the source of third PMOS tube PM3
The top crown of pole, the second capacitance C2 connects the source electrode of third NMOS tube NM3, and the bottom crown of the second capacitance C2 meets the second NMOS tube NM2
Source electrode, the drain electrode of the second PMOS tube PM2 is the output signal anode of current multiplication type low-voltage current multiplexing passive frequency mixer,
The anode of 3rd resistor R3 connects the drain electrode of the second PMOS tube PM2, the cathode ground connection of 3rd resistor R3, the grid of the second PMOS tube PM2
Pole connects the drain electrode of the 4th NMOS tube NM4；
Source electrode, the source electrode of the 5th PMOS tube PM5 and the source electrode of the 6th PMOS tube PM6 of the 4th PMOS tube PM4 connects, and connects
Contact connects supply voltage；The grid of the grid of 4th PMOS tube PM4, the grid and the 6th PMOS tube PM6 of the 5th PMOS tube PM5
Connect, tie point connects third bias voltage；The drain electrode of 4th PMOS tube PM4 meets the drain electrode of the 4th NMOS tube NM4, the 4th NMOS
The grid of pipe NM4 connects the source electrode of the second NMOS tube NM2；The grid of third PMOS tube PM3, the drain electrode of the 5th NMOS tube NM5 and
The drain electrode of five PMOS tube PM3 connects, and the drain electrode of third PMOS tube PM3 is current multiplication type low-voltage current multiplexing passive frequency mixer
Output signal cathode；The source electrode of 4th NMOS tube NM4 and the source electrode ground connection of the 5th NMOS tube NM5；The grid of 5th NMOS tube NM5
Pole connects the source electrode of third PMOS tube PM3；The anode of 4th resistance R4 connects the drain electrode of third PMOS tube PM3, and the 4th resistance R4's is negative
Pole is grounded；Drain electrode, the source electrode of the 7th PMOS tube PM7 and the source electrode of the 8th PMOS tube PM8 of 6th PMOS tube PM6 connects, and the 7th
The grid of PMOS tube PM7 connects the grid of the second PMOS tube PM2, and the drain electrode of the 7th PMOS tube PM7 connects the leakage of the second PMOS tube PM2
The grid of pole, the 8th PMOS tube PM8 connects the grid of third PMOS tube PM3, and the drain electrode of the 8th PMOS tube PM8 connects third PMOS tube
The drain electrode of PM3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610631673.6A CN106301233B (en) | 2016-08-03 | 2016-08-03 | A kind of current multiplication type low-voltage current multiplexing passive frequency mixer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610631673.6A CN106301233B (en) | 2016-08-03 | 2016-08-03 | A kind of current multiplication type low-voltage current multiplexing passive frequency mixer |
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| CN106301233A CN106301233A (en) | 2017-01-04 |
| CN106301233B true CN106301233B (en) | 2018-10-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412786A (en) * | 2011-12-20 | 2012-04-11 | 东南大学 | Transconductance-enhancing passive frequency mixer |
| CN102522954A (en) * | 2011-12-23 | 2012-06-27 | 东南大学 | Current reuse high linearity folding current mirror mixer |
| CN103490731A (en) * | 2013-10-16 | 2014-01-01 | 东南大学 | Low-noise passive frequency mixer |
| CN105207636A (en) * | 2015-10-30 | 2015-12-30 | 上海集成电路研发中心有限公司 | Variable gain low noise amplifier |
-
2016
- 2016-08-03 CN CN201610631673.6A patent/CN106301233B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412786A (en) * | 2011-12-20 | 2012-04-11 | 东南大学 | Transconductance-enhancing passive frequency mixer |
| CN102522954A (en) * | 2011-12-23 | 2012-06-27 | 东南大学 | Current reuse high linearity folding current mirror mixer |
| CN103490731A (en) * | 2013-10-16 | 2014-01-01 | 东南大学 | Low-noise passive frequency mixer |
| CN105207636A (en) * | 2015-10-30 | 2015-12-30 | 上海集成电路研发中心有限公司 | Variable gain low noise amplifier |
Non-Patent Citations (1)
| Title |
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| 一种智能传感器射频前端的低功耗设计与实现;田晓明等;《传感技术学报》;20141031;第27卷(第10期);第1326-1330页 * |
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| CN106301233A (en) | 2017-01-04 |
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