CN110401420A - A kind of radiometric image circuit based on active radiometric image base bias voltage and fundamental wave input signal power amplitude relation - Google Patents
A kind of radiometric image circuit based on active radiometric image base bias voltage and fundamental wave input signal power amplitude relation Download PDFInfo
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- CN110401420A CN110401420A CN201910599066.XA CN201910599066A CN110401420A CN 110401420 A CN110401420 A CN 110401420A CN 201910599066 A CN201910599066 A CN 201910599066A CN 110401420 A CN110401420 A CN 110401420A
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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
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/14—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a semiconductor device
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Abstract
The invention discloses a kind of radiometric image circuit based on active radiometric image base bias voltage and fundamental wave input signal power amplitude relation, fundamental signal input terminal connects RF coupler, and the straight-through end connection input matching of RF coupler, coupled end connect radio frequency detector device；One end connection of the primary coil of millimeter wave transformer inputs matched output end, other end ground connection；The input terminal of the output end connection single-chip computer control system of radio frequency detector device, the radio frequency center virtual earth point of the secondary coil of the output end connection millimeter wave transformer of single-chip computer control system；The both ends of secondary coil are separately connected two base terminals of frequency multiplication core, and two emitters of frequency multiplication core are all connected with the matched input terminal of output, export matched output end connection harmonic signal output end.The present invention can improve active radiometric image harmonic wave signal power, can also improve direct current to the transfer efficiency of radiofrequency signal, while not will increase the power consumption of active radiometric image.
Description
Technical field
The present invention relates to active radiometric image technical fields, more particularly to one kind to be based on active radiometric image base
The radiometric image circuit of pole bias voltage and fundamental wave input signal power amplitude relation.
Background technique
With the further development of radio technology, low frequency section frequency spectrum resource is very crowded at present, super for future
The demand of high-speed communication application, the channel capacity of low-frequency range have been difficult meet demand.However, in millimeter wave frequency band, Shang You great
The frequency spectrum resource of amount is not developed and utilized, and millimeter wave frequency band is wider, can be used for transmitting higher rate, to obtain bigger
Message capacity.More and more applications, including WLAN, terahertz have been emerged for millimeter wave frequency band in the world at present
Hereby imaging, millimeter wave trailer-mounted radar, spectroscopy and remote sensing etc..
The limited quality of influence and passive device for all these millimeter-wave systems, due to circuit parasitic parameter
Factor, the design of silicon substrate broadband low phase noise high-output power frequency source circuit are always a difficult point.Commonly solve this
The scheme of problem first is that use low-frequency phase-locking ring chip to double frequency link low to constitute millimeter wave frequency band broadband high-output power
The signal source chip of phase noise.It is doubled in frequency link structure in low-frequency phase-locking ring, the resonant cavity work of oscillator is in output frequency
At the one of the N (N >=2) of rate points, the quality factor of varactor are greatly improved, and then effectively improve oscillator
Phase noise.Further, since low-frequency phase-locking ring doubles frequency link structure can extract fundamental signal at low frequency simultaneously, work
It also can be omitted in the frequency divider of millimeter wave frequency band, the power consumption of frequency source system can be greatly reduced.
However, due to the limited MAG of millimeter wave frequency band active device (maximum is for RF signal gain) and passive device
The limited figure of merit value of part (is usually determined) that the conversion gain of Active multiplier and maximum are defeated by microstrip line, inductance and capacitor
Power promotes sharp fall with working frequency out.Common solution first is that function by increasing input fundamental signal
Rate obtains relatively high harmonic wave signal power using limited conversion gain.But due to the limited threshold of silicon base chip
Threshold voltage, the output power value of corresponding low-frequency phase-locking ring chip is limited, be difficult to provide enough fundamental wave input signal powers with
Drive Active multiplier.
It can be according to fundamental wave input signal power size, by adjusting frequency multiplication core base bias electricity therefore, it is necessary to invent one kind
Pressure is to obtain the technology of maximum conversion gain harmony wave output signal power.
Summary of the invention
Goal of the invention: harmonic wave signal power and conversion gain for existing active radiometric image are small to ask
Topic, the present invention propose a kind of based on active radiometric image base bias voltage and fundamental wave input signal power amplitude relation
Radiometric image circuit.
Technical solution: to achieve the purpose of the present invention, the technical scheme adopted by the invention is that:
A kind of millimeter based on active radiometric image base bias voltage and fundamental wave input signal power amplitude relation
Wave frequency multiplier circuit, including fundamental signal input terminal, RF coupler, radio frequency detector device, single-chip computer control system, input
Match, millimeter wave transformer, frequency multiplication core, output matches, harmonic signal output end and radio-frequency choke L1, the fundamental signal input
Fundamental wave input signal is transmitted in RF coupler by end, and the fundamental wave input signal is transmitted by the straight-through end of RF coupler
Into input matching, the fundamental wave input signal is transmitted in radio frequency detector device by the coupled end of RF coupler；
The matched output end of input is electrically connected one end of the primary coil of millimeter wave transformer, and the millimeter wave becomes
The other end of the primary coil of depressor is grounded；
The output end of the radio frequency detector device is electrically connected the input terminal of single-chip computer control system, single-chip microcontroller control system
The output end of system is electrically connected the input terminal of radio frequency center the virtual earth point and first capacitor C1 of the secondary coil of millimeter wave transformer,
The output end of the first capacitor C1 is grounded；
The both ends of the secondary coil of the millimeter wave transformer are electrically connected two base terminals of frequency multiplication core, and described times
Two emitters of frequency core are electrically connected the input terminal for exporting matched input terminal and radio-frequency choke L1, the output matching
Output end be electrically connected harmonic signal output end, the radio-frequency choke L1 output end ground connection.
Further speaking, fundamental wave input signal is converted DC level by the radio frequency detector device, and by the direct current
It flates pass and transports in single-chip computer control system.
Further speaking, the corresponding base bias voltage of the single-chip computer control system output fundamental wave input signal, and will
The base bias voltage is transmitted in frequency multiplication core by the radio frequency center virtual earth point of the secondary coil of millimeter wave transformer.
Further speaking, the amplitude of the base bias voltage of the frequency multiplication core is determined by the power bracket of fundamental wave input signal
It is fixed.
Further speaking, the frequency multiplication core includes the first transistor Q1 and second transistor Q2, the millimeter wave transformation
One end of the secondary coil of device is electrically connected the base stage of the first transistor Q1, the other end is electrically connected the base of second transistor Q2
Pole, the collector of the first transistor Q1 are electrically connected the collector of second transistor Q2, the hair of the first transistor Q1
Emitter-base bandgap grading is electrically connected the input terminal of the emitter of second transistor Q2, output matched input terminal and radio-frequency choke L1.
Further speaking, the frequency multiplication core includes differential configuration or single-ended structure.
The utility model has the advantages that compared with prior art, technical solution of the present invention has following advantageous effects:
Output power lift technique of the invention can not only improve active radiometric image harmonic wave signal power,
Direct current can also be improved to the transfer efficiency of radiofrequency signal, while not will increase the power consumption of active radiometric image, to change
It has been apt to the conversion gain of active radiometric image, and has been suitable for high-output power and efficient active radiometric image
In application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of radiometric image system of the invention；
Fig. 2 is that radiometric image system of the invention applies circuit diagram in D wave band millimeter wave frequency multiplier；
Fig. 3 is that the present invention applies the common collector differential configuration for not having input terminal second harmonic resonant cavity in a D wave band
The test result figure of active varactor doubler；
The corresponding component names of figure label:
1, fundamental signal input terminal；2, RF coupler；3, radio frequency detector device；4, single-chip computer control system；5, input
Match；6, millimeter wave transformer；61, the primary coil of millimeter wave transformer；62, the secondary coil of millimeter wave transformer；7, frequency multiplication
Core；71, the first transistor Q1；72, second transistor Q2；8, output matching；9, harmonic signal output end；10, radio-frequency choke
L1。
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Wherein, described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Therefore, below to the embodiment of the present invention provided in the accompanying drawings
Detailed description be not intended to limit the range of claimed invention, but be merely representative of selected embodiment of the invention.
Embodiment 1
With reference to Fig. 1, present embodiments provide a kind of based on active radiometric image base bias voltage and fundamental wave input
The radiometric image circuit of signal power amplitude relation, and the radiometric image system is aoxidized by silicon substrate Bipolar Metal
Object semiconductor integrated circuit technique is made.Similarly, which can be made by other means, and there is no have
The requirement of body, the technique in the present embodiment is one such.
The radiometric image system includes fundamental signal input terminal 1, RF coupler 2, radio frequency detector device 3, monolithic
Machine control system 4, input matching 5, millimeter wave transformer 6, frequency multiplication core 7, output matching 8, harmonic signal output end 9 and radio frequency
Choke coil L110.Wherein fundamental signal input terminal 1 is electrically connected the input terminal of RF coupler 2, the straight-through end of RF coupler 2
It is electrically connected the input terminal of input matching 5, the input terminal of coupled end electric connection radio frequency detector device 3.That is, fundamental signal
Fundamental wave input signal is transmitted in RF coupler 2 by input terminal 1, and fundamental wave input signal passes through the straight of RF coupler 2 later
Go side is transmitted in input matching 5, is transmitted in radio frequency detector device 3 by the coupled end of RF coupler 2.
The output end of input matching 5 is electrically connected one end of the primary coil 61 of millimeter wave transformer, millimeter wave transformer
Primary coil 61 the other end ground connection.
The output end of radio frequency detector device 3 is electrically connected the input terminal of single-chip computer control system 4, single-chip computer control system simultaneously
4 output end is electrically connected the input of radio frequency center the virtual earth point and first capacitor C1 of the secondary coil 62 of millimeter wave transformer
End, wherein the input terminal of first capacitor C1 is also electrically connected the radio frequency center virtual earth point of the secondary coil 62 of millimeter wave transformer,
The output end of first capacitor C1 is grounded.
That is, after radio frequency detector device 3 receives the fundamental wave input signal that RF coupler 2 transmits, radio frequency inspection
Fundamental wave input signal is converted DC level by wave device 3, and the DC level is transmitted in single-chip computer control system 4.In list
Control program is provided in piece machine control system 4, so that single-chip computer control system 4 can export DC level by control program
Corresponding base bias voltage, and the base bias voltage is passed through into the radio frequency center of the secondary coil 62 of millimeter wave transformer
Virtual earth point is transmitted in frequency multiplication core 7.
In the present embodiment, frequency multiplication core 7 includes the first transistor Q171 and second transistor Q272.Wherein millimeter wave becomes
Two base terminals of frequency multiplication core 7, the i.e. secondary wire of millimeter wave transformer are electrically connected in the both ends of the secondary coil 62 of depressor
One end of circle 62 is electrically connected the base stage of the first transistor Q171, the other end is electrically connected the base stage of second transistor Q272.
The collector of the first transistor Q171 is electrically connected the collector of second transistor Q272, the first transistor Q171
Emitter be electrically connected second transistor Q272 emitter.The emitter and second transistor of the first transistor Q171 simultaneously
The emitter of Q272 is electrically connected the input terminal of output matching 8 and the input terminal of radio-frequency choke L110, exports the defeated of matching 8
Outlet is electrically connected harmonic signal output end 9, the output end ground connection of radio-frequency choke L110.
In the present embodiment, in particular, the base bias voltage of frequency multiplication core 7 is the variable of amplitude-controllable.Work as frequency multiplication
When the power bracket of device fundamental wave input signal needs to adjust, it is only necessary to the amplitude of the base bias voltage of frequency multiplication core 7 is adjusted, thus
The power bracket of frequency multiplier fundamental wave input signal can be adjusted.That is, the power bracket of fundamental wave input signal by
The amplitude of the base bias voltage of frequency multiplication core 7 determines.
The structure of frequency multiplication core 7 is not restricted simultaneously, either differential configuration is also possible to single-ended structure, it can basis
Actual requirement is specifically chosen.
It include four width figures with reference to Fig. 2, in Fig. 2, wherein Fig. 2 (a) is the total collection of no input terminal second harmonic resonant cavity
The active varactor doubler of electrode differential mechanism, basic structure are a frequency multiplication core base bias voltages according to frequency multiplier input radio frequency
Signal power is adjustable, active differential varactor doubler to obtain maximum output harmonic signal power, includes fundamental signal
Input port, input matching network, the millimeter wave transformer of input single-ended-to-difference signal conversion, differential configuration frequency multiplication core crystal
Pipe is to (Q1, Q2), radio-frequency choke L1, output matching network and harmonic wave signal output port.
Unlike the base bias voltage fixed from traditional radiometric image, the base bias voltage of the frequency multiplier is set
It is set to the adjustable variable of external voltage value, it, can be by adjusting base stage for some given fundamental wave input signal power value
Bias voltage value, to obtain maximum conversion gain harmony wave output signal performance number, so as to improve radiometric image
Transfer efficiency of the direct current to radiofrequency signal.
Fig. 2 (b) is the active varactor doubler of common collector difference mechanism for having input terminal second harmonic resonant cavity, with Fig. 2 (a)
Active varactor doubler the difference is that: input terminal has added the second harmonic resonator being made of serial inductor capacitance,
The resonator effectively can fall reflected second harmonic signal power by resonance, and the frequency conversion for further promoting varactor doubler increases
Benefit and output RF signal power, but the bandwidth of operation of frequency multiplier can be deteriorated.What is be wherein made of serial inductor capacitance is secondary
Harmonic resonator specifically: the input terminal of the second inductance L2 is electrically connected the base stage of the 4th transistor Q4, output end is electrically connected
The input terminal of second capacitor C2, the output end ground connection of the second capacitor C2.
Fig. 2 (c) is the active varactor doubler of common emitter difference mechanism of no input terminal second harmonic resonant cavity, with Fig. 2
(a) active varactor doubler the difference is that: frequency multiplication core is using common emitter configuration.Difference is: in Fig. 2 (a)
Active varactor doubler suitable for the higher scene of working frequency, active varactor doubler in Fig. 2 (c) be suitable for working frequency compared with
In low scene.
Fig. 2 (d) is the active varactor doubler of common emitter difference mechanism for having input terminal second harmonic resonant cavity, with Fig. 2 (c)
Between difference and Fig. 2 (a) and Fig. 2 (b) between difference it is identical, will no longer carry out herein repeat elaboration.
With reference to Fig. 3, Cong Tuzhong it can be found that for different fundamental wave input signal power values, believe by maximum harmonic wave
Number power is corresponding with different fundamental wave bias voltages.For example, when fundamental wave input signal power value is 10dBm, base bias
For voltage when 0.1 to 0.7V section changes, the power of obtained frequency multiplier harmonic wave signal arrives the area 2.3dBm -9.5
Between change, and harmonic signal output power reaches maximum value under the base bias voltage state of 0.55V, i.e., harmonic signal exports
Power is 2.3dBm, and the change of base bias voltage is obviously improved frequency multiplication core harmonic wave signal power value.
It can be clearly seen that from Fig. 3 simultaneously, with the promotion of fundamental wave input signal power value, correspondence obtains maximum harmonic wave
Base bias voltage required for output signal power value is gradually reduced, when fundamental wave input signal power is changed to from 10dBm
When 16dBm, base bias voltage required for maximum harmonic wave signal power value gradually decreases to 0.15 V from 0.55V.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structures and methods are not limited thereto.So if this field
Those of ordinary skill is enlightened by it, without departing from the spirit of the invention, is not inventively designed and the skill
The similar frame mode of art scheme and embodiment, all belong to the scope of protection of the present invention.
Claims (6)
1. a kind of millimeter wave based on active radiometric image base bias voltage and fundamental wave input signal power amplitude relation
Frequency multiplier circuit, which is characterized in that including fundamental signal input terminal (1), RF coupler (2), radio frequency detector device (3), monolithic
Machine control system (4), input matching (5), millimeter wave transformer (6), frequency multiplication core (7), output matching (8), harmonic signal output
Fundamental wave input signal is transmitted to RF coupler by end (9) and radio-frequency choke L1 (10), the fundamental signal input terminal (1)
(2) in, the fundamental wave input signal is transmitted in input matching (5) by the straight-through end of RF coupler (2), and the fundamental wave is defeated
Enter signal to be transmitted in radio frequency detector device (3) by the coupled end of RF coupler (2)；
The output end of the input matching (5) is electrically connected one end of the primary coil (61) of millimeter wave transformer, the millimeter
The other end of the primary coil (61) of wave transformer is grounded；
The output end of the radio frequency detector device (3) is electrically connected the input terminal of single-chip computer control system (4), the single-chip microcontroller control
The output end of system (4) is electrically connected the radio frequency center virtual earth point and first capacitor C1 of the secondary coil (62) of millimeter wave transformer
Input terminal, the first capacitor C1 output end ground connection；
Two base terminals of frequency multiplication core (7), institute is electrically connected in the both ends of the secondary coil (62) of the millimeter wave transformer
Two emitters for stating frequency multiplication core (7) are electrically connected the input that output matches the input terminal and radio-frequency choke L1 (10) of (8)
End, it is described output matching (8) output end be electrically connected harmonic signal output end (9), the radio-frequency choke L1 (10) it is defeated
Outlet ground connection.
2. according to claim 1 a kind of based on active radiometric image base bias voltage and fundamental wave input signal function
The radiometric image circuit of rate amplitude relation, which is characterized in that the radio frequency detector device (3) converts fundamental wave input signal to
DC level, and the DC level is transmitted in single-chip computer control system (4).
3. according to claim 1 or 2 a kind of based on active radiometric image base bias voltage and fundamental wave input letter
The radiometric image circuit of number power magnitude relationship, which is characterized in that single-chip computer control system (4) the output fundamental wave input
The corresponding base bias voltage of signal, and the base bias voltage is passed through into penetrating for secondary coil (62) of millimeter wave transformer
Frequency center virtual earth point is transmitted in frequency multiplication core (7).
4. according to claim 3 a kind of based on active radiometric image base bias voltage and fundamental wave input signal function
The radiometric image circuit of rate amplitude relation, which is characterized in that the amplitude of the base bias voltage of the frequency multiplication core (7) is by base
The power bracket of wave input signal determines.
5. according to claim 3 a kind of based on active radiometric image base bias voltage and fundamental wave input signal function
The radiometric image circuit of rate amplitude relation, which is characterized in that the frequency multiplication core (7) include the first transistor Q1 (71) and
One end of second transistor Q2 (72), the secondary coil (62) of the millimeter wave transformer are electrically connected the first transistor Q1 (71)
Base stage, the other end be electrically connected the base stage of second transistor Q2 (72), the collector of the first transistor Q1 (71) is electrical
The collector of second transistor Q2 (72) is connected, the emitter of the first transistor Q1 (71) is electrically connected second transistor Q2
(72) emitter, the input terminal of output matching (8) and the input terminal of radio-frequency choke L1 (10).
6. according to claim 5 a kind of based on active radiometric image base bias voltage and fundamental wave input signal function
The radiometric image circuit of rate amplitude relation, which is characterized in that the frequency multiplication core (7) includes differential configuration or single-ended structure.
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| CN201910599066.XA CN110401420B (en) | 2019-07-04 | 2019-07-04 | Millimeter wave frequency multiplier circuit based on active millimeter wave frequency multiplier base bias voltage and fundamental wave input signal power amplitude relation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995163A (en) * | 2019-11-26 | 2020-04-10 | 杭州电子科技大学 | Fundamental wave frequency mixing and harmonic frequency mixing hybrid millimeter wave dual-band passive mixer |
| CN111884606A (en) * | 2020-06-22 | 2020-11-03 | 南京迈矽科微电子科技有限公司 | Broadband matching circuit and millimeter wave power amplification circuit based on millimeter wave transformer |
| WO2023082938A1 (en) * | 2021-11-09 | 2023-05-19 | 深圳飞骧科技股份有限公司 | Radio frequency amplifier, radio frequency chip, and wireless communication device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180159516A1 (en) * | 2016-12-05 | 2018-06-07 | The Regents Of The University Of California | High-efficiency frequency doubler with a compensated transformer-based input balun |
| CN108551331A (en) * | 2018-03-23 | 2018-09-18 | 杭州电子科技大学 | One kind being based on transformer coupled matched millimeter wave low-loss frequency multiplier |
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2019
- 2019-07-04 CN CN201910599066.XA patent/CN110401420B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180159516A1 (en) * | 2016-12-05 | 2018-06-07 | The Regents Of The University Of California | High-efficiency frequency doubler with a compensated transformer-based input balun |
| CN108551331A (en) * | 2018-03-23 | 2018-09-18 | 杭州电子科技大学 | One kind being based on transformer coupled matched millimeter wave low-loss frequency multiplier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995163A (en) * | 2019-11-26 | 2020-04-10 | 杭州电子科技大学 | Fundamental wave frequency mixing and harmonic frequency mixing hybrid millimeter wave dual-band passive mixer |
| CN110995163B (en) * | 2019-11-26 | 2023-05-12 | 杭州电子科技大学 | Fundamental wave mixing and harmonic mixing hybrid millimeter wave dual-band passive mixer |
| CN111884606A (en) * | 2020-06-22 | 2020-11-03 | 南京迈矽科微电子科技有限公司 | Broadband matching circuit and millimeter wave power amplification circuit based on millimeter wave transformer |
| WO2023082938A1 (en) * | 2021-11-09 | 2023-05-19 | 深圳飞骧科技股份有限公司 | Radio frequency amplifier, radio frequency chip, and wireless communication device |
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