CN106571778A - Ka-waveband up-conversion device and up-conversion method - Google Patents
Ka-waveband up-conversion device and up-conversion method Download PDFInfo
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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
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
- H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
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Abstract
The invention provides a Ka-waveband up-conversion device and an up-conversion method. The device comprises a modulation module, a pulse shaping module, a switch module and a harmonic filter, wherein the modulation module, the pulse shaping module, the switch module and the harmonic filter are sequentially connected. The modulation module is used for modulating an input baseband signal into a quadrature modulated signal of a preset waveband. The pulse shaping module is used for converting the quadrature modulated signal into a square-wave signal, wherein the duty cycle of the square-wave signal is smaller than 1. The switch module is used for adopting the square-wave signal as a modulation signal to modulate a preset bias voltage signal and then generating a plurality of harmonic signals comprising a plurality of harmonics. The harmonic filter is used for filtering a target harmonic among the plurality of harmonics of the harmonic signals, and outputting the target harmonic as an up-converted signal. According to the up-conversion signal device and the up-conversion method provided in the embodiments of the preset invention, the use of expensive high-frequency equipment is avoided, and the cost of terminal products is reduced. Meanwhile, the stray phenomenon in a link is suppressed.
Description
Technical field
The present invention relates to satellite communication field, and in particular to a kind of Ka band up-conversions device and up-conversion method.
Background technology
Because the frequency spectrum of low-frequency range is nervous, communication frequency develops to higher and higher frequency increasingly, will be after Ka wave bands
The main flow frequency range of satellite communication.At present the transmitter architecture to Ka wave bands is secondary or three up-conversions super-heterodyne architecture,
The structure complexity is high, and with interior spuious more difficult suppression, and the device such as frequency source, the frequency mixer of Ka frequency ranges is expensive, directly
End product price is caused to raise.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of Ka band up-conversions device and up-conversion method, can avoid making
With expensive high-frequency element, to reduce the cost of end product, while can also suppress spuious in link, it is ensured that up-conversion is believed
Number it is pure.
For achieving the above object, on the one hand the embodiment of the present invention provides a kind of Ka band up-conversions device, described device bag
Modulation module, shaping pulse module, switch module and the harmonic filter being sequentially connected is included, wherein：The modulation module is used
In by orthogonal demodulation signal that the modulates baseband signals of input are default wave band；The shaping pulse module is used for will be described orthogonal
Modulated signal is converted to square-wave signal of the dutycycle less than 1；The switch module is used for the square-wave signal as modulation letter
Number, default biasing voltage signal is modulated, to generate the harmonic signal for possessing multiple harmonic waves；Wherein, the harmonic signal
In frequency interval between adjacent harmonic wave determined by the fundamental frequency in the harmonic signal；The harmonic filter is used for from institute
Target harmonic wave is filtered out in the multiple harmonic waves for stating harmonic signal, and is exported the target harmonic wave as up-conversion signal.
Further, after the harmonic filter, described device also includes the power amplifier being connected and band logical filter
Ripple device, wherein：The power amplifier is used for the power amplification of the target harmonic wave to predetermined power, wherein, it is described default
Power determines according to the Insertion Loss of the band filter and the power index of up-conversion signal；The band filter is used to filter
Except spuious and other harmonic waves of carrying in the target harmonic wave after power amplification, to export up-conversion signal.
Further, the modulation module include first phase modulation link, second phase modulation link, 90 ° of phase shifters,
Local oscillator and adder, wherein, the first phase modulation link is identical with second phase modulation link structure, includes
Prefilter, power amplifier and the phase-modulator being sequentially connected, the output port of two phase-modulators respectively with
Two input ports of the adder are connected, first phase modulation described in the signal input all the way of the local oscillator output
Phase-modulator in link, another road signal is input in the second phase modulation link after 90 ° of phase shifters
Phase-modulator, the output port of the adder is connected with the input port of the shaping pulse module.
Further, the shaping pulse module includes the first phase inverter, the second phase inverter, the 3rd phase inverter, the 4th anti-
Phase device, electric capacity and resistance, wherein, first phase inverter, the second phase inverter, the 3rd phase inverter are sequentially connected, and the described 3rd is anti-
Phase device is grounded after the connected electric capacity and resistance, with the input of the 4th phase inverter between the electric capacity and resistance
It is connected, the outfan of the 4th phase inverter is connected with the switch module.
Further, the switch module includes current-limiting resistance and switch module, wherein, the current-limiting resistance is by described
Switch module is grounded, and the default biasing voltage signal is loaded on the current-limiting resistance, and the side is loaded on the switch module
Ripple signal, output harmonic wave signal between the current-limiting resistance and the switch module.
For achieving the above object, the embodiment of the present invention also provides a kind of Ka band up-conversions method, and methods described includes：Will
The modulates baseband signals of input are the orthogonal demodulation signal of default wave band；The orthogonal demodulation signal is converted to into dutycycle to be less than
1 square-wave signal；Using the square-wave signal as modulated signals, it is modulated using default biasing voltage signal, to generate
Possesses the harmonic signal of multiple harmonic waves；Wherein, the frequency interval in the harmonic signal between adjacent harmonic wave is believed by the harmonic wave
Fundamental frequency in number determines；Filter out target harmonic wave from multiple harmonic waves of the harmonic signal, and by the target harmonic wave
As up-conversion signal output.
Further, methods described also includes：The power amplification of the target harmonic wave to predetermined power, wherein, it is described pre-
If power determines according to the Insertion Loss of band filter in link and the power index of up-conversion signal；Filter through power amplification
Spuious and other harmonic waves carried in target harmonic wave afterwards, to export up-conversion signal.
Further, the orthogonal demodulation signal that the modulates baseband signals of input are default wave band is specifically included：In two-way
Baseband signal through pre-filtering and amplify after, will wherein all the way baseband signal carries out phase-modulation by local oscillation signal, obtain
First component signal of the default wave band；The local oscillation signal is carried out into 90 ° of phase shifts, and using the local oscillation signal pair after phase shift
Another roadbed band signal is modulated, and obtains the second component signal of the default wave band；By first component signal and
Two component signals are superimposed, and obtain the orthogonal demodulation signal of the default wave band.
Further, the orthogonal demodulation signal is converted to into square-wave signal of the dutycycle less than 1 to specifically include：Will be described
Orthogonal demodulation signal is anti-phase through twice, obtains the square-wave signal that dutycycle is 1；By the square-wave signal Jing that the dutycycle is 1
Cross after oscillating circuit and obtain oscillator signal；By the oscillator signal input inverter, square-wave signal of the dutycycle less than 1 is obtained.
Further, the square-wave signal is modulated into concrete bag as modulated signal to default biasing voltage signal
Include：When the square-wave signal is in low level, export and the default biasing voltage signal amplitude identical signal；When described
When square-wave signal is in high level, the amplitude of output signal is 0.
Therefore, Ka band up-conversions device provided in an embodiment of the present invention and up-conversion method, by the way that base band is believed
The orthogonal demodulation signal on default wave band number is converted to, then orthogonal demodulation signal can be shaped as containing abundant higher hamonic wave
Square-wave signal.Then pass through square-wave signal to be modulated default biasing voltage signal such that it is able to obtain containing brewed
The higher hamonic wave of signal message.The harmonic component of required frequency is filtered out by harmonic filter such that it is able to obtain up-conversion
Signal afterwards.Low frequency device is substantially used in the embodiment of the present invention, so as to save the cost of device.Further,
Spuious and other harmonic components included in signal are filtered by band filter, so as to be effectively guaranteed up-conversion signal
It is pure.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, below will be to institute in embodiment of the present invention description
The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to present invention enforcement
The content of example and these accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the means of upconversion described in the present embodiment；
Fig. 2 is the schematic diagram of modulation module in the present embodiment；
Fig. 3 is the schematic diagram of pulse Shaping Module in the present embodiment；
Fig. 4 is the waveform diagram in the present embodiment in pulse Shaping Module；
Fig. 5 is the schematic diagram of the present embodiment breaker in middle module；
Fig. 6 is the flow chart of the up-conversion method described in the present embodiment.
Through accompanying drawing, it should be noted that similar label is used to describe same or analogous element, feature and structure.
Specific embodiment
The disclosure for describing to help comprehensive understanding to be limited by claim and its equivalent referring to the drawings is provided
Various embodiments.Hereinafter description includes the various details for helping understand, but these details will be considered only to be example
Property.Therefore, it will be appreciated by those of ordinary skill in the art that without departing from the scope of the present disclosure and spirit in the case of, can be right
Various embodiments described herein makes various changes and modifications.In addition, in order to clear and succinct, known function and construction are retouched
Stating to be omitted.
Term and vocabulary used in following description and claims is not limited to document implication, but only by inventor
For enabling the disclosure clearly and as one man to be understood.Therefore, to those skilled in the art it should be apparent that carrying
Description for following various embodiments of this disclosure merely to exemplary purpose, and it is unrestricted by claims and its
The purpose of the disclosure that equivalent is limited.
It should be understood that unless context is clearly indicated in addition, otherwise singulative also includes plural.Thus, for example,
Include the reference to one or more such surfaces to the reference of " assembly surface ".
Fig. 1 is referred to, the embodiment of the present application provides a kind of Ka band up-conversions device, and described device includes what is be sequentially connected
Modulation module 100, shaping pulse module 200, switch module 300 and harmonic filter 400.
In the present embodiment, it is the orthogonal of default wave band that the modulation module 100 is used for the modulates baseband signals of input
Modulated signal.The default wave band for example can be L-band or S-band.
The shaping pulse module 200 is used to for the orthogonal demodulation signal to be converted to square-wave signal of the dutycycle less than 1.
The switch module 300 is used for the square-wave signal as modulated signal, and default biasing voltage signal is carried out
Modulation, to generate the harmonic signal for possessing multiple harmonic waves.Wherein, the frequency interval in the harmonic signal between adjacent harmonic wave by
Fundamental frequency in the harmonic signal determines.
The harmonic filter 400 is used to filter out target harmonic wave from multiple harmonic waves of the harmonic signal, and by institute
State target harmonic wave to export as up-conversion signal.
In the embodiment of the present application, require in order to the power for ensureing the up-conversion signal for exporting meets, and in order to suppress
Spuious in up-conversion signal, after the harmonic filter 400, described device can also include connected power amplifier
500 and band filter 600.
In the present embodiment, the power amplifier 500 is used for the power amplification of the target harmonic wave to predetermined power.
Wherein, the predetermined power can determine according to the power index of the Insertion Loss of the band filter and up-conversion signal.Example
Such as, the Insertion Loss of the band filter 600 is 2dB, and the power index of the up-conversion signal of final output is 33dBm, then Jing
Crossing the signal power of the output of the power amplifier 500 then needs to reach 35dBm.
The band filter 600 is used to filtering carry in the target harmonic wave after power amplification spuious and other are humorous
Ripple, such that it is able to export spuious up-conversion signal is inhibited.
Fig. 2 is referred to, the modulation module 100 includes first phase modulation link, second phase modulation link, 90 ° of shiftings
Phase device 107, local oscillator 108 and adder 109, wherein, the first phase modulation link and second phase modulate link
Structure is identical, including the prefilter 101 and 102, power amplifier 103 and 104 and phase-modulator being sequentially connected
105 and 106, the output port of two phase-modulators is connected respectively with two input ports of the adder 109, described
Phase-modulator 105 in first phase modulation link described in the signal input all the way of the ground output of agitator 108, another road signal
The phase-modulator 106 being input into after 90 ° of phase shifters 107 in the second phase modulation link, the adder
109 output port is connected with the input port of the shaping pulse module 200.
In the present embodiment, baseband signal filters out-of-band interference through prefilter and power amplifier is amplified into
Phase-modulator, this two-way baseband signal arrives L-band or S-band by the local oscillation signal modulation that phase contrast is 90 ° respectively, this
Sample, can produce after adder all the way orthogonal modulation I/Q signal to shaping pulse module 200.
Refer to Fig. 3 and Fig. 4, the shaping pulse module 200 include the first phase inverter 201, the second phase inverter 202, the
Three phase inverters 203, the 4th phase inverter 204, electric capacity 205 and resistance 206, wherein, first phase inverter 201, the second phase inverter
202nd, the 3rd phase inverter 203 is sequentially connected, and the 3rd phase inverter 203 is followed by by the connected electric capacity 205 and resistance 206
Ground, is connected between the electric capacity 205 and resistance 206 with the input of the 4th phase inverter 204, the 4th phase inverter 204
Outfan be connected with the switch module 300.
In the present embodiment, waveform 5 is the orthogonal demodulation signal of input, and the orthogonal demodulation signal can show as sine
Ripple.The output waveform 6 after the first phase inverter 201, the output waveform 7 after the second phase inverter 202.Now waveform 7 is duty
Than output wave after the oscillating circuit that constitutes through the 3rd phase inverter 203 and by electric capacity 205 and resistance 206 for 1 square wave, waveform 7
Shape 8, waveform 8 can form square-wave signal of the dutycycle less than 1 after the 4th phase inverter 204.
Fig. 5 is referred to, the switch module 300 includes current-limiting resistance 301 and switch module 302, wherein, the current limliting electricity
Resistance 301 is grounded by the switch module 302, and the default biasing voltage signal is loaded on the current-limiting resistance 301, described to open
Close and load the square-wave signal on component 302, output harmonic wave signal between the current-limiting resistance 301 and the switch module 302.
In the present embodiment, the dutycycle through modulating is less than the control end of 1 square-wave signal access switch module 302,
Default biasing voltage signal accesses the input of switch module 302 by current-limiting resistance 301.Square wave of the dutycycle less than 1
Signal can be used as the folding of modulated signal controlling switch component 302.When switch module is to open, ground connection is all the way not turned on,
The amplitude of the as default biasing voltage signal of amplitude output signal.The advantage of the design is can directly by the default biased electrical of adjustment
Press signal to adjust the power of output signal, it is convenient and economical.When the switch is closed, the conducting all the way of ground connection, presets biasing
Voltage signal is directly connected with ground, and now the amplitude of output signal is zero.Because modulated signal is periodic square wave, in the cycle
Property ground controlling switch component closure when, can produce containing enrich harmonic componentss harmonic signal.With symmetrical two in Fig. 5
Field effect transistor is realizing the function of switch module, it is ensured that source electrode and the symmetry of drain electrode in field effect transistor.
In the present embodiment, because output signal contains abundant harmonic componentss, the harmonic filter 400 of high q-factor is needed
To select required harmonic wave, remaining harmonic wave is accomplished effectively suppression.Specifically, Q-value is higher, and the realizability of harmonic filter is got over
Complexity, and the frequency interval of each harmonic is determined by fundamental frequency, thus in the implementation will be according to harmonic filter 400 can be real
Show property to set fundamental frequency.
In the present embodiment, it is contemplated that the power amplification efficiency problem of power amplifier 500, power amplifier 500 is typically work
Make in saturation, the state belongs to inelastic region, can cause the generation of spuious harmonic.Rear class band filter 600 is then
Filter these spuious harmonics.
Fig. 6 is referred to, the embodiment of the present application also provides a kind of Ka band up-conversions method.It should be noted that, although under
The flow process of text description includes the multiple operations occurred with particular order, but it should be clearly understood that these processes can be included more
Many or less operations, these operations can sequentially be performed or executed in parallel is (such as using parallel processor or multithreading ring
Border).The method comprising the steps of.
S1：By the orthogonal demodulation signal that the modulates baseband signals of input are default wave band；
S2：The orthogonal demodulation signal is converted to into square-wave signal of the dutycycle less than 1；
S3：Using the square-wave signal as modulated signal, default biasing voltage signal is modulated, possesses many to generate
The harmonic signal of individual harmonic wave；Wherein, the frequency interval in the harmonic signal between adjacent harmonic wave is by the harmonic signal
Fundamental frequency determines；
S4：Target harmonic wave is filtered out from multiple harmonic waves of the harmonic signal, and using the target harmonic wave as upper change
Frequency signal output.
In the application one embodiment, methods described also includes：
The power amplification of the target harmonic wave to predetermined power, wherein, the predetermined power is according to bandpass filtering in link
The Insertion Loss of device and the power index of up-conversion signal determine；
Spuious and other harmonic waves carried in the target harmonic wave after power amplification are filtered, to export up-conversion signal.
It is in the application one embodiment, orthogonal demodulation signal that the modulates baseband signals of input are default wave band is concrete
Including：
In two-way baseband signal after pre-filtering and amplifying, will wherein all the way baseband signal be carried out by local oscillation signal
Phase-modulation, obtains the first component signal of the default wave band；
The local oscillation signal is carried out into 90 ° of phase shifts, and another roadbed band signal is carried out using the local oscillation signal after phase shift
Modulation, obtains the second component signal of the default wave band；
By first component signal and second component Signal averaging, the orthogonal demodulation signal of the default wave band is obtained.
In the application one embodiment, the orthogonal demodulation signal is converted to into square-wave signal of the dutycycle less than 1 and is had
Body includes：
The orthogonal demodulation signal is anti-phase through twice, obtain the square-wave signal that dutycycle is 1；
The square-wave signal that the dutycycle is 1 is obtained into oscillator signal after oscillating circuit；
By the oscillator signal input inverter, square-wave signal of the dutycycle less than 1 is obtained.
In the application one embodiment, using the square-wave signal as modulated signal, default biasing voltage signal is entered
Row modulation is specifically included：
When the square-wave signal is in low level, export and the default biasing voltage signal amplitude identical signal；
When the square-wave signal is in high level, the amplitude of output signal is 0.
It should be noted that the specific implementation of above-mentioned each method and step and the description in means of upconversion embodiment
Unanimously, just repeat no more here.
Therefore, Ka band up-conversions device provided in an embodiment of the present invention and up-conversion method, by the way that base band is believed
The orthogonal demodulation signal on default wave band number is converted to, then orthogonal demodulation signal can be shaped as containing abundant higher hamonic wave
Square-wave signal.Then pass through square-wave signal to be modulated default biasing voltage signal such that it is able to obtain containing brewed
The higher hamonic wave of signal message.The harmonic component of required frequency is filtered out by harmonic filter such that it is able to obtain up-conversion
Signal afterwards.Low frequency device is substantially used in the embodiment of the present invention, so as to save the cost of device.Further,
Spuious and other harmonic components included in signal are filtered by band filter, so as to be effectively guaranteed up-conversion signal
It is pure.
It should be noted that the various embodiments of the disclosure as above are generally related to a certain extent input data
Process and output data generation.This input data is processed and output data generation can be in hardware or soft with combination of hardware
Realize in part.For example, can in mobile device or similar or related circuit using specific electronic components for realize with
The function that as mentioned above the various embodiments of the disclosure are associated.Alternatively, according to that instructs to operate for being stored or more
Multiple processors are capable of achieving the function of associating with the various embodiments of the disclosure as described above.If it is, then these instructions
Can be stored on one or more non-transitory processor readable mediums, this is in the scope of the present disclosure.Processor can
Reading the example of medium includes read only memory (ROM), random access memory (RAM), CD-ROM, tape, floppy disk and optics number
According to storage device.In addition, functional computer program, instruction and the instruction segment for realizing the disclosure can be by disclosure art
Programmer easily explain.
Each embodiment in this specification is described by the way of progressive, identical similar between each embodiment
Part mutually referring to what each embodiment was stressed is the difference with other embodiment.
Although illustrating and describing the disclosure with reference to the various embodiments of the disclosure, those skilled in the art will manage
Solution, in the case of without departing from the spirit and scope of the present disclosure being defined by the appended claims and the equivalents thereof, can enter to it
Various changes in row form and details.
Claims (10)
1. a kind of Ka band up-conversions device, it is characterised in that described device includes modulation module, the shaping pulse being sequentially connected
Module, switch module and harmonic filter, wherein：
The modulation module is used for orthogonal demodulation signal that the modulates baseband signals of input are default wave band；
The shaping pulse module is used to for the orthogonal demodulation signal to be converted to square-wave signal of the dutycycle less than 1；
The switch module is used for the square-wave signal as modulated signal, and default biasing voltage signal is modulated, with
Generation possesses the harmonic signal of multiple harmonic waves；Wherein, the frequency interval in the harmonic signal between adjacent harmonic wave is by described humorous
Fundamental frequency in ripple signal determines；
The harmonic filter is used to filter out target harmonic wave from multiple harmonic waves of the harmonic signal, and the target is humorous
Ripple is exported as up-conversion signal.
2. Ka band up-conversions device according to claim 1, it is characterised in that after the harmonic filter, institute
Stating device also includes connected power amplifier and band filter, wherein：
The power amplifier is used for the power amplification of the target harmonic wave to predetermined power, wherein, the predetermined power root
Determine according to the Insertion Loss of the band filter and the power index of up-conversion signal；
The band filter is used to filter spuious and other harmonic waves carried in the target harmonic wave after power amplification, with defeated
Go out up-conversion signal.
3. Ka band up-conversions device according to claim 1, it is characterised in that the modulation module includes first phase
Modulation link, second phase modulation link, 90 ° of phase shifters, local oscillator and adders, wherein, the first phase modulation
Link is identical with second phase modulation link structure, including the prefilter, power amplifier and phase place being sequentially connected
Manipulator, the output port of two phase-modulators is connected respectively with two input ports of the adder, described locally to shake
The phase-modulator in first phase modulation link described in the signal input all the way of device output is swung, another road signal is through described
The phase-modulator being input into after 90 ° of phase shifters in the second phase modulation link, the output port of the adder and institute
The input port for stating shaping pulse module is connected.
4. Ka band up-conversions device according to claim 1, it is characterised in that the shaping pulse module includes first
Phase inverter, the second phase inverter, the 3rd phase inverter, the 4th phase inverter, electric capacity and resistance, wherein, it is first phase inverter, second anti-
Phase device, the 3rd phase inverter are sequentially connected, and the 3rd phase inverter is grounded after the connected electric capacity and resistance, the electric capacity
It is connected with the input of the 4th phase inverter and resistance between, outfan and the switch module phase of the 4th phase inverter
Even.
5. Ka band up-conversions device according to claim 1, it is characterised in that the switch module includes current-limiting resistance
And switch module, wherein, the current-limiting resistance is grounded by the switch module, is loaded on the current-limiting resistance described default inclined
Voltage signal is put, the square-wave signal is loaded on the switch module, exported between the current-limiting resistance and the switch module
Harmonic signal.
6. a kind of Ka band up-conversions method, it is characterised in that methods described includes：
By the orthogonal demodulation signal that the modulates baseband signals of input are default wave band；
The orthogonal demodulation signal is converted to into square-wave signal of the dutycycle less than 1；
Using the square-wave signal as modulated signal, default biasing voltage signal is modulated, possesses multiple harmonic waves to generate
Harmonic signal；Wherein, the frequency interval in the harmonic signal between adjacent harmonic wave is by the fundamental wave frequency in the harmonic signal
Rate determines；
Target harmonic wave is filtered out from multiple harmonic waves of the harmonic signal, and the target harmonic wave is defeated as up-conversion signal
Go out.
7. Ka band up-conversions method according to claim 6, it is characterised in that methods described also includes：
The power amplification of the target harmonic wave to predetermined power, wherein, the predetermined power is according to band filter in link
The power index of Insertion Loss and up-conversion signal determines；
Spuious and other harmonic waves carried in the target harmonic wave after power amplification are filtered, to export up-conversion signal.
8. Ka band up-conversions method according to claim 6, it is characterised in that the modulates baseband signals by input are pre-
If the orthogonal demodulation signal of wave band is specifically included：
In two-way baseband signal after pre-filtering and amplifying, will wherein all the way baseband signal enters line phase by local oscillation signal
Modulation, obtains the first component signal of the default wave band；
The local oscillation signal is carried out into 90 ° of phase shifts, and another roadbed band signal is modulated using the local oscillation signal after phase shift,
Obtain the second component signal of the default wave band；
By first component signal and second component Signal averaging, the orthogonal demodulation signal of the default wave band is obtained.
9. Ka band up-conversions method according to claim 6, it is characterised in that be converted to the orthogonal demodulation signal
Square-wave signal of the dutycycle less than 1 is specifically included：
The orthogonal demodulation signal is anti-phase through twice, obtain the square-wave signal that dutycycle is 1；
The square-wave signal that the dutycycle is 1 is obtained into oscillator signal after oscillating circuit；
By the oscillator signal input inverter, square-wave signal of the dutycycle less than 1 is obtained.
10. Ka band up-conversions method according to claim 6, it is characterised in that using the square-wave signal as modulation
Signal, is modulated to default biasing voltage signal and specifically includes：
When the square-wave signal is in low level, export and the default biasing voltage signal amplitude identical signal；
When the square-wave signal is in high level, the amplitude of output signal is 0.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116248050A (en) * | 2023-05-08 | 2023-06-09 | 国仪量子(合肥)技术有限公司 | Phase-locked amplifier, signal device detection method and signal processing method |
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| CN116248050B (en) * | 2023-05-08 | 2023-07-11 | 国仪量子(合肥)技术有限公司 | Phase-locked amplifier, signal device detection method and signal processing method |
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