CN109738869A - A kind of preparation method and preparation facilities of ultra-wideband microwave signal - Google Patents
A kind of preparation method and preparation facilities of ultra-wideband microwave signal Download PDFInfo
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Abstract
The invention belongs to microwave technical fields, provide the preparation method and preparation facilities of a kind of ultra-wideband microwave signal, by obtaining the first microwave signal, and first local oscillation signal and first microwave signal are subjected to Frequency mixing processing, to export the first mixed frequency signal, then the second local oscillation signal is generated according to the control instruction of user's input, second local oscillation signal includes N number of frequency point, first mixed frequency signal and second local oscillation signal are subjected to Frequency mixing processing, to export corresponding second microwave signal, bandwidth to realization to the second microwave signal for increasing output after the first microwave signal progress Frequency mixing processing of input, the problem of avoiding limitation of the bandwidth of the second microwave signal of output by the bandwidth of the first microwave signal.
Description
Technical field
The embodiment of the present invention belongs to microwave technical field more particularly to a kind of preparation method and system of ultra-wideband microwave signal
Standby device.
Background technique
With the development of science and technology, microwave technology has been widely used for the neck such as radar, communication, the energy, chemical industry and household electrical appliances
The basis in domain, microwave technology is exactly the generation of microwave signal, and in microwave technology application, the ultra-wideband microwave signal of high quality can
For use as various microwave detection systems analog signal, successfully manage extraneous electronic interferences.Broadband frequency source is radar seeker
In key building block, main function is to generate broadband local oscillator signal or target seeker self-test signal, therefore, performance indicator
Directly influence the performance of entire radar system.
However, existing wideband frequency synthesizer generallys use after incident microwave signals are mixed with local oscillation signal and generates radio frequency
Signal, at this point, the bandwidth of radiofrequency signal is equal to the bandwidth of incident microwave signals, therefore, the bandwidth of incident microwave signals is great
Limit the bandwidth of radiofrequency signal.
Summary of the invention
The embodiment of the present invention provides the preparation method and preparation facilities of a kind of ultra-wideband microwave signal, it is intended to solve existing
Wideband frequency synthesizer generallys use after incident microwave signals are mixed with local oscillation signal and generates radiofrequency signal, and impinging microwave is caused to be believed
Number bandwidth the problem of significantly limiting the bandwidth of radiofrequency signal.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of preparation method of ultra-wideband microwave signal,
The preparation method includes:
Obtain the first microwave signal；
The first local oscillation signal is received, and first local oscillation signal and first microwave signal are subjected to Frequency mixing processing,
To export the first mixed frequency signal；
The second local oscillation signal is generated according to the control instruction of user's input, second local oscillation signal includes N number of frequency point,
In, N is positive integer；
First mixed frequency signal and second local oscillation signal are received, by first mixed frequency signal and second described
The signal that shakes carries out Frequency mixing processing, to export corresponding second microwave signal.
Optionally, first microwave signal is intermediate-freuqncy signal.
Optionally, the frequency interval between the adjacent frequency point in second local oscillation signal is identical.
Optionally, the frequency interval between the adjacent frequency point in second local oscillation signal be with it is described first micro-
The bandwidth of wave signal is identical.
Optionally, it is micro- to be less than described first for the frequency interval between the adjacent frequency point in second local oscillation signal
The bandwidth of wave signal.
The embodiment of the invention also provides a kind of preparation facilities of ultra-wideband microwave signal, the preparation facilities includes:
Microwave signal obtains module, for obtaining the first microwave signal；
First frequency mixing module, for receiving the first local oscillation signal, and by first local oscillation signal and first microwave
Signal carries out Frequency mixing processing, to export the first mixed frequency signal.
Local oscillation signal generation module, control instruction the second local oscillation signal of generation for being inputted according to user, described second
Local oscillation signal includes N number of frequency point, wherein N is positive integer；And
Second frequency mixing module receives first mixed frequency signal and second local oscillation signal, and first mixing is believed
Number and second local oscillation signal carry out Frequency mixing processing, to export corresponding second microwave signal.
Optionally, it is intermediate-freuqncy signal, the intermediate-freuqncy signal that the microwave signal, which obtains the first microwave signal that module obtains,
Bandwidth be 2a, wherein a > 0.
Optionally, the adjacent frequency point in second local oscillation signal that the local oscillation signal generation module generates it
Between frequency interval it is identical.
Optionally, the adjacent frequency point in second local oscillation signal that the local oscillation signal generation module generates it
Between frequency interval it is identical as the bandwidth of first microwave signal.
Optionally, the adjacent frequency point in second local oscillation signal that the local oscillation signal generation module generates it
Between frequency interval be less than first microwave signal bandwidth.
The embodiment of the invention provides the preparation methods and preparation facilities of a kind of ultra-wideband microwave signal, by obtaining first
Microwave signal, and first local oscillation signal and first microwave signal are subjected to Frequency mixing processing, with output the first mixing letter
Number, the second local oscillation signal is then generated according to the control instruction of user's input, second local oscillation signal includes N number of frequency point, will
First mixed frequency signal and second local oscillation signal carry out Frequency mixing processing, to export corresponding second microwave signal, thus
Bandwidth of the realization to the second microwave signal for increasing output after the first microwave signal progress Frequency mixing processing of input, avoids output
The bandwidth of the second microwave signal limited by the bandwidth of the first microwave signal, it is logical to solve existing wideband frequency synthesizer
Radiofrequency signal is generated after being mixed frequently with incident microwave signals with local oscillation signal, the bandwidth of radiofrequency signal is equal to incident microwave signals
Bandwidth, the problem of causing the bandwidth of incident microwave signals to significantly limit the bandwidth of radiofrequency signal.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the schematic diagram of the preparation method for the ultra-wideband microwave signal that one embodiment of the present of invention provides；
Fig. 2 is the schematic diagram of the preparation facilities for the ultra-wideband microwave signal that one embodiment of the present of invention provides.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention are explicitly described, it is clear that described embodiment is the present invention one
The embodiment divided, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, should fall within the scope of the present invention.
Description and claims of this specification and term " includes " and their any deformations in above-mentioned attached drawing, meaning
Figure, which is to cover, non-exclusive includes.Such as process, method or system comprising a series of steps or units, product or equipment do not have
It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also wrap
Include the other step or units intrinsic for these process, methods, product or equipment.In addition, term " first ", " second " and
" third " etc. is for distinguishing different objects, not for description particular order.
Fig. 1 is the schematic diagram of the preparation method for the ultra-wideband microwave signal that one embodiment of the present of invention provides, such as Fig. 1 institute
Show, the preparation method of the ultra-wideband microwave signal in the present embodiment includes:
Step S10: the first microwave signal is obtained；
Step S20: the first local oscillation signal is received, and first local oscillation signal and first microwave signal are mixed
Frequency is handled, to export the first mixed frequency signal；
Step S30: the second local oscillation signal is generated according to the control instruction of user's input, second local oscillation signal includes N
A frequency point, wherein N is positive integer；
Step S40: first mixed frequency signal and second local oscillation signal are received, by first mixed frequency signal and institute
It states the second local oscillation signal and carries out Frequency mixing processing, to export corresponding second microwave signal.
In the present embodiment, obtain the first microwave signal as input signal first, then by the first microwave signal with
The first local oscillation signal that first local oscillator signal source provides carries out Frequency mixing processing, and to export the first mixed frequency signal, the first mixing is believed
Number and the second local oscillation signal carry out Frequency mixing processing to export the second microwave signal, specifically, user can by input it is corresponding
Control instruction controls the second local oscillation signal source, so that the second local oscillation signal includes N number of frequency point, increases by second with this
The number of the frequency signal of vibration signal avoids the second microwave letter of output to increase the frequency range of the second microwave signal
Number receive the bandwidth limitation of the first microwave signal of input.
In one embodiment, the first microwave signal is intermediate-freuqncy signal, which can be used as a kind of intermediate frequency
Signal form, wherein intermediate frequency is for baseband signal and radiofrequency signal, and intermediate frequency can have one or more levels, it
It is the bridge of transition between base band and radio frequency.
In one embodiment, the bandwidth of the first microwave signal can need to preset according to user, for example, Fif ± a
Refer to the frequency range of the first microwave signal, wherein Fif is the centre frequency of the first microwave signal, and 2a is the first microwave signal
Bandwidth, wherein a is determined greater than the value of 0, a by the actual use demand of user.Fif is 200MHz, when a is 20MHz, the
Frequency range 200MHz ± 20MHz of one microwave signal, refers to the frequency range of 180MHz~220MHz, and at this point, first
The bandwidth of microwave signal is just 40MHz, if do not handled the first microwave signal, the band of the second microwave signal exported
The wide bandwidth by the first microwave signal inputted is limited, and the bandwidth of the second microwave signal is similarly 40MHZ.
In one embodiment, the carrier wave that the first local oscillation signal can generate for the machine, i.e. frequency synthesizer itself can be with
Generate preset oscillator signal, which is the carrier wave that the machine generates, carrier wave that the machine is generated by frequency synthesizer and
Received first microwave signal carries out Frequency mixing processing, exports corresponding first mixed frequency signal, which includes defeated
The information of the first microwave signal and the first local oscillation signal that enter.For example, the frequency of the first local oscillation signal is L01, at this point, first
Mixed frequency signal is Fif+L01 ± a.
In one embodiment, the frequency of the first local oscillation signal can be greater than the first microwave signal frequency, by will in
Frequency signal and the first local oscillation signal carry out Frequency mixing processing, so that the first mixed frequency signal of output is high frequency signal, to promote the
The frequency of one mixed frequency signal realizes the purpose of power method.
It in one embodiment, include N number of frequency point in the second local oscillation signal, wherein between the frequency between adjacent frequency point
Every identical.Due to including N number of frequency point in the second local oscillation signal, the frequency of the second local oscillation signal is variable, for example, if N
Be the frequency of the second local oscillation signal for 11, L02, wherein the low-limit frequency L02min in L02 be 7000MHz, adjacent frequency point it
Between interval 2b be 40MHz, then the frequency that the second local oscillation signal can actually export be 7000MHz, 7040MHz,
7080MHz, 7120MHz ... 7400MHz, totally 11 kinds of output frequencies, at this point, minimum in the frequency range of the second microwave signal
Frequency is Fif+L01+L02min-a, and highest frequency is Fif+L01+L02min+a+ (N-1) 2b.
In one embodiment, the frequency interval 2b between adjacent frequency point is identical as the bandwidth 2a of the first microwave signal,
The frequency of second microwave signal is Fif+L01+L02 ± N*a, by by the frequency between the adjacent frequency in the second local oscillation signal
It is set to the bandwidth of the first microwave signal, each Frequency point in the second microwave signal of output can be made to be held in the mouth
It connects, while increasing the bandwidth of the second microwave signal, ensure that the connectivity of frequency range, and take full advantage of frequency money
Source.For example, the frequency bandwidth of first microwave signal Fif ± a of input is 2a, if the frequency of Fif ± a is 200MHz ± 20MHz,
The frequency of L01 is 1500MHz, and the frequency of the first mixed frequency signal obtained after Frequency mixing processing is 1700 ± 20MHz, with L02's
Obtain the frequency of 9700 ± 20MHz after 7000MHz mixing, be mixed to obtain the frequency of 9740 ± 20MHz with the 7040MHz of L02 and
The 7080MHz of L02 is mixed to obtain the frequency ... of 9780 ± 20MHz to be mixed to obtain 10100 ± 20MHz's with the 7400MHz of L02
Frequency, therefore, by the frequency for the second microwave signal that will be obtained after the first mixed frequency signal and the second local oscillation signal Frequency mixing processing
Including 9700 ± 20MHz, 9740 ± 20MHz, 9780 ± 20MHz ..., 10100 ± 20MHz, wherein 9700 ± 20MHz,
9740 ± 20MHz, 9780 ± 20MHz ..., 10100 ± 20MHz just component frequency range 9900MHz ± 220MHz, and
It simultaneously include N number of frequency point, the frequency interval between adjacent frequency point is identical, and Frequency point can just be connected,.
In one embodiment, the bandwidth of the second microwave signal is N times of the bandwidth of the first microwave signal, the number of frequency point N
Mesh can determine according to final reference frequency output, for example, the first microwave signal of input be 200MHz ± 20MHz (i.e.
Fif ± a), it is desirable that output frequency be 9900MHz ± 220MHz, i.e., the value of Fif+L01+L02 ± N*a be exactly 9900MHz ±
220MHz, then the value of L01 and L02 is with regard to oneself definition but will meet Fif+L01+L02 equal to 9900MHz, the value etc. of N*a
It can calculate in 220M equal to 11.
In one embodiment, the frequency interval between the adjacent frequency point in second local oscillation signal can be with
Less than the bandwidth of first microwave signal.The bandwidth of frequency interval 2b between i.e. adjacent frequency point less than the first microwave signal
2a, at this point, N times of bandwidth of the bandwidth of the second microwave signal less than the first microwave signal.
Fig. 2 is a kind of preparation facilities for ultra-wideband microwave signal that one embodiment of the present of invention provides, as shown in Fig. 2,
Preparation facilities in the present embodiment includes:
Microwave signal obtains module 10, for obtaining the first microwave signal；
First frequency mixing module 20, for receiving the first local oscillation signal, and first local oscillation signal and described first is micro-
Wave signal carries out Frequency mixing processing, to export the first mixed frequency signal.
Local oscillation signal generation module 30, control instruction for being inputted according to user generate the second local oscillation signal, and described the
Two local oscillation signals include N number of frequency point, wherein N is positive integer；And
Second frequency mixing module 40 receives first mixed frequency signal and second local oscillation signal, described first is mixed
Signal and second local oscillation signal carry out Frequency mixing processing, to export corresponding second microwave signal.
In the present embodiment, firstly, microwave signal obtains first microwave signal of the acquisition of module 10 as input signal, so
The first local oscillation signal that first microwave signal and the first local oscillator signal source provide is mixed by the first frequency mixing module 20 afterwards
Processing, to export the first mixed frequency signal, the second frequency mixing module 40 exports the first mixed frequency signal and local oscillation signal generation module 30
The second local oscillation signal carry out Frequency mixing processing to export the second microwave signal, specifically, user can pass through the corresponding control of input
System instruction controls local oscillation signal generation module 30, so that the second local oscillation signal that local oscillation signal generation module 30 exports
Including N number of frequency point, with the number of this frequency signal for increasing by the second local oscillation signal, to increase the frequency model of the second microwave signal
It encloses, the bandwidth for the first microwave signal that the second microwave signal for avoiding output receives input limits.
In one embodiment, the first frequency mixing module 20 can be signal modulator, and signal modulator itself needs one
Suitable oscillator signal, by received original signal superimposed, this oscillator signal is the load that signal modulator the machine generates
Wave, the carrier wave exported after modulation are the first mixed frequency signal, and the first mixed frequency signal just contains the information of original signal.
In one embodiment, the second frequency mixing module 40 can be frequency synthesizer, and the frequency synthesizer is to received the
One mixed frequency signal and the second local oscillation signal carry out Frequency mixing processing, and also Frequency mixing processing can also be signal modulation process, wherein signal
Modulation is the process or processing method for changing a kind of certain characteristics of waveform by another waveform or signal.It is logical in radio
In letter, using electromagnetic wave as the carrier of information.Information is usually baseband signal to be transmitted (i.e. modulated signal), its main feature is that
Frequency is lower, frequency band is wider and overlapped, in order to be suitble to single channel to transmit, it is necessary to be modulated.So-called modulation, being exactly will
Baseband signal (modulated signal) to be transmitted is loaded into the process on high-frequency oscillation signal, and its essence is move baseband signal
High frequency carrier gets on, that is, the process of frequency spectrum shift, it is therefore an objective to the analog signal or digital signal to be transmitted is transformed into suitable
Close the high-frequency signal of transmission.
In one embodiment, it is intermediate-freuqncy signal, the intermediate frequency that microwave signal, which obtains the first microwave signal that module 10 obtains,
Signal can be used as a kind of signal form of intermediate frequency, wherein intermediate frequency be for baseband signal and radiofrequency signal,
Intermediate frequency can have one or more levels, it is the bridge of transition between base band and radio frequency.
In one embodiment, the bandwidth of the first microwave signal can need to preset according to user, for example, Fif ± a
Refer to the frequency range of the first microwave signal, wherein Fif is the centre frequency of the first microwave signal, and 2a is the first microwave signal
Bandwidth, wherein a is determined greater than the value of 0, a by the actual use demand of user.Fif is 200MHz, when a is 20MHz, the
Frequency range 200MHz ± 20MHz of one microwave signal, refers to the frequency range of 180MHz~220MHz, and at this point, first
The bandwidth of microwave signal is just 40MHz, if do not handled the first microwave signal, the band of the second microwave signal exported
The wide bandwidth by the first microwave signal inputted is limited, and the bandwidth of the second microwave signal is similarly 40MHZ.
In one embodiment, the carrier wave that the first local oscillation signal can generate for the machine, i.e. frequency synthesizer itself can be with
Generate preset oscillator signal, which is the carrier wave that the machine generates, carrier wave that the machine is generated by frequency synthesizer and
Received first microwave signal carries out Frequency mixing processing, exports corresponding first mixed frequency signal, which includes defeated
The information of the first microwave signal and the first local oscillation signal that enter.For example, the frequency of the first local oscillation signal is L01, at this point, first
Mixed frequency signal is Fif+L01 ± a.
In one embodiment, the frequency for the first local oscillation signal that local oscillation signal generation module 30 generates can be greater than first
The frequency of microwave signal, by the way that intermediate-freuqncy signal and the first local oscillation signal are carried out Frequency mixing processing, so that the first mixing letter of output
Number be high frequency signal, with promoted the first mixed frequency signal frequency, realize the purpose of power method.
It in one embodiment, include N number of frequency point in the second local oscillation signal, wherein between the frequency between adjacent frequency point
Every identical.Due to including N number of frequency point in the second local oscillation signal, the frequency of the second local oscillation signal is variable, for example, if N
Be the frequency of the second local oscillation signal for 11, L02, wherein the low-limit frequency L02min in L02 be 7000MHz, adjacent frequency point it
Between interval 2b be 40MHz, then the frequency that the second local oscillation signal can actually export be 7000MHz, 7040MHz,
7080MHz, 7120MHz ... 7400MHz, totally 11 kinds of output frequencies, at this point, minimum in the frequency range of the second microwave signal
Frequency is Fif+L01+L02min-a, and highest frequency is Fif+L01+L02min+a+ (N-1) 2b.
In one embodiment, the adjacent frequency point in second local oscillation signal that local oscillation signal generation module 30 generates
Between frequency interval 2b it is identical as the bandwidth 2a of the first microwave signal, the frequency of the second microwave signal be Fif+L01+L02 ±
N*a can be with by setting the frequency interval between the adjacent frequency in the second local oscillation signal to the bandwidth of the first microwave signal
So that each Frequency point in the second microwave signal of output is connected, while increasing the bandwidth of the second microwave signal,
It ensure that the connectivity of frequency range, and take full advantage of frequency resource.For example, the frequency of first microwave signal Fif ± a of input
Rate bandwidth is 2a, if the frequency of Fif ± a is 200MHz ± 20MHz, the frequency of L01 is 1500MHz, is obtained after Frequency mixing processing
The frequency of first mixed frequency signal is 1700 ± 20MHz, obtained after being mixed with the 7000MHz of L02 9700 ± 20MHz frequency, with
The 7040MHz of L02 is mixed to obtain the frequency of 9740 ± 20MHz, is mixed to obtain the frequency of 9780 ± 20MHz with the 7080MHz of L02
Rate ... is mixed to obtain the frequency of 10100 ± 20MHz with the 7400MHz of L02, therefore, by by the first mixed frequency signal and second
The frequency of the second microwave signal obtained after local oscillation signal Frequency mixing processing include 9700 ± 20MHz, 9740 ± 20MHz, 9780 ±
20MHz ..., 10100 ± 20MHz, wherein 9700 ± 20MHz, 9740 ± 20MHz, 9780 ± 20MHz ..., 10100 ±
20MHz just component frequency range 9900MHz ± 220MHz's, and simultaneously include N number of frequency point, the frequency between adjacent frequency point
It is spaced identical, Frequency point can just be connected,.
In one embodiment, the bandwidth of the second microwave signal is N times of the bandwidth of the first microwave signal, the number of frequency point N
Mesh can determine according to final reference frequency output, for example, the first microwave signal of input be 200MHz ± 20MHz (i.e.
Fif ± a), it is desirable that output frequency be 9900MHz ± 220MHz, i.e., the value of Fif+L01+L02 ± N*a be exactly 9900MHz ±
220MHz, then the value of L01 and L02 is with regard to oneself definition but will meet Fif+L01+L02 equal to 9900MHz, the value etc. of N*a
It can calculate in 220M equal to 11.
In one embodiment, adjacent described in second local oscillation signal that local oscillation signal generation module 30 generates
Frequency interval between frequency point is also less than the bandwidth of first microwave signal, i.e., the frequency interval between adjacent frequency point
2b less than the first microwave signal bandwidth 2a, at this point, N of the bandwidth of the second microwave signal less than the bandwidth of the first microwave signal
Times.
The embodiment of the invention provides the preparation methods and preparation facilities of a kind of ultra-wideband microwave signal, by obtaining first
Microwave signal, and first local oscillation signal and first microwave signal are subjected to Frequency mixing processing, with output the first mixing letter
Number, the second local oscillation signal is then generated according to the control instruction of user's input, second local oscillation signal includes N number of frequency point, will
First mixed frequency signal and second local oscillation signal carry out Frequency mixing processing, to export corresponding second microwave signal, thus
Bandwidth of the realization to the second microwave signal for increasing output after the first microwave signal progress Frequency mixing processing of input, avoids output
The bandwidth of the second microwave signal limited by the bandwidth of the first microwave signal, it is logical to solve existing wideband frequency synthesizer
Radiofrequency signal is generated after being mixed frequently with incident microwave signals with local oscillation signal, the bandwidth of radiofrequency signal is equal to incident microwave signals
Bandwidth, the problem of causing the bandwidth of incident microwave signals to significantly limit the bandwidth of radiofrequency signal.
The foregoing is merely alternative embodiments of the invention, are not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of preparation method of ultra-wideband microwave signal, which is characterized in that the preparation method includes:
Obtain the first microwave signal；
The first local oscillation signal is received, and first local oscillation signal and first microwave signal are subjected to Frequency mixing processing, with defeated
First mixed frequency signal out；
The second local oscillation signal is generated according to the control instruction of user's input, second local oscillation signal includes N number of frequency point, wherein N
For positive integer；
First mixed frequency signal and second local oscillation signal are received, first mixed frequency signal and second local oscillator are believed
Number carry out Frequency mixing processing, to export corresponding second microwave signal.
2. preparation method as described in claim 1, which is characterized in that first microwave signal is intermediate-freuqncy signal.
3. preparation method as described in claim 1, which is characterized in that the adjacent frequency point in second local oscillation signal
Between frequency interval it is identical.
4. preparation method as described in claim 1, which is characterized in that the adjacent frequency point in second local oscillation signal
Between frequency interval be it is identical as the bandwidth of first microwave signal.
5. preparation method as described in claim 1, which is characterized in that the adjacent frequency point in second local oscillation signal
Between frequency interval be less than first microwave signal bandwidth.
6. a kind of preparation facilities of ultra-wideband microwave signal, which is characterized in that the preparation facilities includes:
Microwave signal obtains module, for obtaining the first microwave signal；
First frequency mixing module, for receiving the first local oscillation signal, and by first local oscillation signal and first microwave signal
Frequency mixing processing is carried out, to export the first mixed frequency signal.
Local oscillation signal generation module, the control instruction for being inputted according to user generate the second local oscillation signal, second local oscillator
Signal includes N number of frequency point, wherein N is positive integer；And
Second frequency mixing module receives first mixed frequency signal and second local oscillation signal, will first mixed frequency signal with
Second local oscillation signal carries out Frequency mixing processing, to export corresponding second microwave signal.
7. preparation facilities as claimed in claim 6, which is characterized in that the microwave signal obtains the first microwave that module obtains
Signal is intermediate-freuqncy signal.
8. preparation facilities as claimed in claim 6, which is characterized in that described the second of the local oscillation signal generation module generation
The frequency interval between the adjacent frequency point in local oscillation signal is identical.
9. preparation facilities as claimed in claim 6, which is characterized in that described the second of the local oscillation signal generation module generation
The frequency interval between the adjacent frequency point in local oscillation signal is identical as the bandwidth of first microwave signal.
10. preparation facilities as claimed in claim 6, which is characterized in that the local oscillation signal generation module generate described the
The frequency interval between the adjacent frequency point in two local oscillation signals is less than the bandwidth of first microwave signal.
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Application publication date: 20190510 |