CN107911103A - It is a kind of to use the 1MHz 6GHz signal generating circuits divided entirely and method - Google Patents

It is a kind of to use the 1MHz 6GHz signal generating circuits divided entirely and method Download PDF

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Publication number
CN107911103A
CN107911103A CN201711280477.XA CN201711280477A CN107911103A CN 107911103 A CN107911103 A CN 107911103A CN 201711280477 A CN201711280477 A CN 201711280477A CN 107911103 A CN107911103 A CN 107911103A
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China
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6ghz
signal
series
1mhz
frequency
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CN107911103B (en
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高栋
段喜东
杨彪
刘金现
李原
刘琦
孟勇萍
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CETC 41 Institute
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CETC 41 Institute
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals

Abstract

The present invention proposes a kind of 1MHz 6GHz signal generating circuits for using and dividing entirely, and the 3GHz 6GHz signals of input pass through after two-stage variable frequency dividing ratio frequency divider, produce the Low phase noise signal of 46.875MHz 6GHz；Wherein, the signal of 187.5MHz 6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit by first switch unit；The signal of 46.875MHz 187.5MHz frequency ranges enters frequency unit after first switch unit, produce the ultralow phase noise cancellation signal of 1MHz 187.5MHz, subsequently into the second connection in series-parallel variable connector filter unit, finally merge composition 1MHz 6GHz with 187.5MHz 6GHz Low phase noise low harmony wave signals after second switch unit and surpass the ultralow harmonic signal output of Low phase noise.The present invention realizes the super Low phase noise output of covering full frequency band 1MHz 6GHz, possesses the circuit area and preferably harmonic wave index of smaller.

Description

It is a kind of to use the 1MHz-6GHz signal generating circuits divided entirely and method
Technical field
It is more particularly to a kind of that electricity is produced using the 1MHz-6GHz signals divided entirely the present invention relates to signal generator field Road, further relates to a kind of using the 1MHz-6GHz signal generating methods divided entirely.
Background technology
Radio-frequency signal generator is one of important microwave measuring instrument, with modern communication technology, electronic countermeasure, radar The development of system etc., the signal quality produced to signal generator it is also proposed increasingly higher demands, particularly the phase of signal Position noise and harmonic wave index.How to make signal in broadband, particularly as signal frequency as low as 1MHz, while ensure low phase Make an uproar and exported with low harmony wave, be the problem that current radio-frequency signal generator is faced.
Existing radio-frequency signal generator is that more than 250MHz signals are realized using the scheme of frequency dividing plus switch filtering mostly Low phase noise low harmony wave exports, and 250MHz signals below is exported by the way of mixing, as shown in Figure 1, the letter of prior art Number generator includes the divider circuit 1-1, parallel variable connector filter circuit 1-2, on-off circuit 1-3 of variable dividing radio And 1-4, mixer 1-5.According to the principle of frequency dividing, signal often passes through a two divided-frequency, and 6dB can all be optimized by mutually making an uproar.It is above-mentioned 250MHz signals below does not carry out frequency-division filter, and mutually making an uproar for signal is not optimized with harmonic wave, can not export 250MHz with Under Low phase noise low harmony wave signal.Therefore the program can not realize the Low phase noise low harmony wave signal of covering full frequency band 1MHz-6GHz Output.
In prior art, 1MHz-250MHz signals are produced by mixing, and not by frequency-division filter, therefore it is mutually made an uproar Do not optimized with harmonic wave, the Low phase noise low harmony wave signal output of covering 1MHz-6GHz full frequency bands can not be obtained；It is moreover, existing There is the switch filtering component of scheme using parallel switch filtering mode, since wave filter quantity is more, cause circuit The a large amount of printing plate suqares of complicated and occupancy.
The content of the invention
To solve the deficiencies in the prior art, the present invention proposes a kind of using the 1MHz-6GHz signals divided entirely generation electricity Road and method, the Low phase noise low harmony wave for realizing covering full frequency band 1MHz-6GHz using full frequency band frequency-division filter scheme export；Low Frequency range, is divided using the noise advantages of D flip-flop, obtains good index of mutually making an uproar；For switched filter circuit form Complicated and take the big problem of size, the present invention proposes a kind of series and parallel combined switch filtering scheme, to part wave filter into Go multiplexing, reduce circuit complexity and circuit area；And due to the cascade of wave filter, it can preferably suppress signal Higher hamonic wave, the harmonics restraint for solving the problems, such as to be brought by filter parasitic passband characteristic reduces.
The technical proposal of the invention is realized in this way：
The 1MHz-6GHz signal generating circuits that a kind of use divides entirely, including：
First variable dividing radio frequency divider and the second variable dividing radio frequency divider, first switch unit and second switch list Member, the first connection in series-parallel variable connector filter unit and the second connection in series-parallel variable connector filter unit and by multistage D flip-flop Cascade the frequency unit formed；
The 3GHz-6GHz signals of input pass through after 1/2/4/8 variable dividing radio frequency divider of two-stage, produce 46.875MHz- The Low phase noise signal of 6GHz；Wherein, the signal of 187.5MHz-6GHz frequency ranges is more into the first connection in series-parallel by first switch unit Way switch filter unit, after exported after second switch unit；The signal of 46.875MHz-187.5MHz frequency ranges passes through first Enter frequency unit after switch element, the ultralow phase noise cancellation signal of 1MHz-187.5MHz is produced, subsequently into the second connection in series-parallel multichannel Switch filtering unit, finally merges composition after second switch unit with 187.5MHz-6GHz Low phase noise low harmony wave signals 1MHz-6GHz surpasses the ultralow harmonic signal output of Low phase noise.
Alternatively, the frequency unit is in series by 6 grades of D flip-flops, per stage D-type flip flop realize one time two points Frequently, D flip-flop cascade circuit is controlled by switch arrays, realizes 1,/2/,4/8,/16,/32,/64 7 kinds of frequency dividing ratios respectively Pattern, accordingly divides the 46.875MHz-187.5MHz signals of input, the final ultralow phase for producing 1MHz-187.5MHz Noise cancellation signal exports.
Alternatively, the first connection in series-parallel variable connector filter unit and the second connection in series-parallel variable connector filter unit are by four Group serial wave filter group in parallel is formed by switching selection, wherein per string formation line filter group again by several difference filtering frequencies The filters in series of section is formed, and filters in series circuit is controlled by switch arrays, is passed through by switch selection signal The path crossed, realizes and is connected in parallel between each wave filter, so as to fulfill the filtering serial implementation of different frequency range.
Alternatively, the signal of 187.5MHz-6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit, and the first string is simultaneously Connection variable connector filter unit includes the serial wave filter group of two-way parallel connection, and wherein serial wave filter all the way is selected by switch Group, and corresponding low-pass filter in the serial wave filter group in the road is selected by switch arrays, and then it is combined into different filtering frequencies Section；
The ultralow phase noise cancellation signal of 1MHz-187.5MHz enters the second connection in series-parallel variable connector filter unit, the second connection in series-parallel Variable connector filter unit includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group all the way, And corresponding low-pass filter in the serial wave filter group in the road is selected by switch arrays, and then it is combined into different filtering frequency ranges.
Alternatively, putting in order for each serial wave filter group median filter is arranged from high to low according to filtering frequency range Row, the signal of low-frequency range first pass through after high-frequency band filter the wave filter Jing Guo corresponding frequency band again.
The invention also provides a kind of using the 1MHz-6GHz signal generating methods divided entirely, the 3GHz-6GHz letters of input Number by after 1/2/4/8 variable dividing radio frequency divider of two-stage, producing the Low phase noise signal of 46.875MHz-6GHz；Wherein, The signal of 187.5MHz-6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit by first switch unit, after by Exported after second switch unit；It is single that 46.875MHz-187.5MHz the signal of frequency range enters frequency dividing after first switch unit Member, produces the ultralow phase noise cancellation signal of 1MHz-187.5MHz, subsequently into the second connection in series-parallel variable connector filter unit, most passes through afterwards Cross after second switch unit to merge with 187.5MHz-6GHz Low phase noise low harmony wave signals and form 1MHz-6GHz to surpass Low phase noise ultralow Harmonic signal exports.
Alternatively, the frequency unit is in series by 6 grades of D flip-flops, per stage D-type flip flop realize one time two points Frequently, D flip-flop cascade circuit is controlled by switch arrays, realizes 1,/2/,4/8,/16,/32,/64 7 kinds of frequency dividing ratios respectively Pattern, accordingly divides the 46.875MHz-187.5MHz signals of input, the final ultralow phase for producing 1MHz-187.5MHz Noise cancellation signal exports.
Alternatively, the first connection in series-parallel variable connector filter unit and the second connection in series-parallel variable connector filter unit are by four Group serial wave filter group in parallel is formed by switching selection, wherein per string formation line filter group again by several difference filtering frequencies The filters in series of section is formed, and filters in series circuit is controlled by switch arrays, is passed through by switch selection signal The path crossed, realizes and is connected in parallel between each wave filter, so as to fulfill the filtering serial implementation of different frequency range.
Alternatively, the signal of 187.5MHz-6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit, and the first string is simultaneously Connection variable connector filter unit includes the serial wave filter group of two-way parallel connection, and wherein serial wave filter all the way is selected by switch Group, and corresponding low-pass filter in the serial wave filter group in the road is selected by switching, and then it is combined into different filtering frequency ranges；
The ultralow phase noise cancellation signal of 1MHz-187.5MHz enters the second connection in series-parallel variable connector filter unit, the second connection in series-parallel Variable connector filter unit includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group all the way, And corresponding low-pass filter in the serial wave filter group in the road is selected by switching, and then it is combined into different filtering frequency ranges.
Alternatively, putting in order for each serial wave filter group median filter is arranged from high to low according to filtering frequency range Row, the signal of low-frequency range first pass through after high-frequency band filter the wave filter Jing Guo corresponding frequency band again.
The beneficial effects of the invention are as follows：
(1) the ultralow harmonic signal of super Low phase noise of covering 1MHz-6GHz is realized by the way of full frequency band frequency-division filter Output；
(2) low-band signal is repeatedly divided using the form of multi-stage cascade using the advantage of mutually making an uproar of D flip-flop, So as to obtain the ultralow phase noise cancellation signal output that 1MHz rises；
(3) a kind of new series and parallel combined switch filtering component is devised, not only reduces switched filter circuit Area, and output signal can be made to possess more preferable harmonic wave index.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram of existing signal generating circuit；
Fig. 2 is the schematic diagram of the signal generating circuit of the present invention；
Fig. 3 is the schematic diagram of series and parallel combined the switch filtering unit and D flip-flop frequency dividing circuit of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work Embodiment, belongs to the scope of protection of the invention.
Existing mainstream commercial signals generator 250MHz-6GHz Low phase noise low harmony waves signal produces more using frequency dividing adduction connection Switch filtering scheme is realized, under the application background that broadband signal produces, to obtain the signal of low harmony wave, it is necessary to divide multiple ripples Duan Jinhang switch filterings, it is contemplated that multi-form filter parasitic passband feature, each wave band also need to use various filters Cascading could be realized, therefore parallel connection type switch filtering resolution circuitry is complicated, and occupied space size is big, is unfavorable for instrument and equipment Miniaturization.And 250MHz signals below is produced by mixing schemes, by frequency dividing and filtering, therefore 250MHz with Mutually making an uproar for lower signal does not optimize further with harmonic wave, it is impossible to meets the application of some special occasions of user.
In order to solve above-mentioned problems of the prior art, obtain Low phase noise and low harmony wave signal, the present invention propose One kind uses full frequency band frequency-division filter scheme, particularly in low-frequency range, is divided, obtained using the noise advantages of D flip-flop To good index of mutually making an uproar.For switched filter circuit form is complicated a kind of string is proposed with the occupancy big problem of size, the present invention Parallel hybrid switch filtering scheme, is multiplexed part wave filter, reduces circuit complexity and circuit area.And Due to the cascade of wave filter, it can preferably suppress the higher hamonic wave of signal, solve by filter parasitic passband characteristic band The problem of harmonics restraint come reduces.
The present invention proposes 1MHz-6GHz signal generating circuits and the method that a kind of use divides entirely, to low-band signal Repeatedly frequency dividing, which is carried out, using D flip-flop arrives 1MHz, so that the ultralow phase noise cancellation signal of 1MHz-6GHz full frequency bands is produced, and to complete Frequency band signals carry out frequency-division section filtering.In addition to improving, conventional parallel variable connector filter circuit circuit is complicated, and occupancy is printed The shortcomings that plate suqare is big, the present invention propose a kind of new series and parallel combined variable connector filter circuit, effectively simplify Path is filtered, reduces circuit area.
As shown in Fig. 2, proposed by the present invention included using the 1MHz-6GHz signal generating circuits divided entirely：First is variable Frequency dividing ratio frequency divider 2-1 and the second variable dividing radio frequency divider 2-2, first switch unit 2-3 and second switch unit 2-4, A string of parallel multiplex switch filtering unit 2-5 and the second connection in series-parallel variable connector filter unit 2-7 and by multistage D types trigger The frequency unit 2-6 that device cascade is formed.The 3GHz-6GHz signals of input pass through 1/2/4/8 variable dividing radio frequency divider 2-1 of two-stage After 2-2, the Low phase noise signal of 46.875MHz-6GHz is produced.Wherein, the signal of 187.5MHz-6GHz frequency ranges passes through first Switch element 2-3 enters the first connection in series-parallel variable connector filter unit 2-5, after exported after second switch unit 2-4； The signal of 46.875MHz-187.5MHz frequency ranges enters frequency unit 2-6 after first switch unit 2-3, produces 1MHz- The ultralow phase noise cancellation signal of 187.5MHz, subsequently into the second connection in series-parallel variable connector filter unit 2-7, finally by second switch Merge composition 1MHz-6GHz with 187.5MHz-6GHz Low phase noise low harmony wave signals after unit 2-4 and surpass the ultralow harmonic signal of Low phase noise Output.
Wherein, the multistage frequency dividing circuit 2-6 that is made of D flip-flop as shown in figure 3, circuit by 6 grades of D flip-flop structures Into every stage D-type flip flop can realize once two divided-frequency, and cascade circuit is controlled by switch arrays, can be realized respectively 1/2/4/8/16/32/64 seven kinds of grade frequency dividing ratio pattern, accordingly divides the 46.875MHz-187.5MHz signals of input, The final ultralow phase noise cancellation signal output for producing 1MHz-187.5MHz.
The new type series-parallel connected composite switch filter circuit that the present invention designs is as shown in figure 3, the first connection in series-parallel variable connector Filter unit 2-5 and the second connection in series-parallel variable connector filter unit 2-7 is selected by four groups of serial wave filter groups in parallel by switching Composition is selected, wherein per string formation line filter group again by the low-pass filter and multiple switch series connection structure of several difference filtering frequency ranges Into, the path passed through by switch selection signal, realize and be connected in parallel between each wave filter, so as to fulfill the filtering of different frequency range Can serial implementation.
The signal of 187.5MHz-6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit 2-5, and the first connection in series-parallel is more Way switch filter unit 2-5 includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group all the way, And corresponding low-pass filter in the serial wave filter group in the road is selected by switching, and then it is combined into different filtering frequency ranges.Equally, The ultralow phase noise cancellation signal of 1MHz-187.5MHz enters the second connection in series-parallel variable connector filter unit 2-7, and the second connection in series-parallel multichannel is opened Closing filter unit 2-7 includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group, and leading to all the way Corresponding low-pass filter in the switch selection serial wave filter group in the road is crossed, and then is combined into different filtering frequency ranges.
Below by taking the wave filter group serial all the way in the first connection in series-parallel variable connector filter unit 2-5 as an example, to connection in series-parallel The operation principle of variable connector filter unit illustrates.
As shown in figure 3, the connection in series-parallel of 1GHz-6GHz filters path by 4GHz-6GHz low-pass filters 3-1,3GHz-4GHz Low-pass filter 3-3,2GHz-3GHz low-pass filter 3-6,1.5GHz-2GHz low-pass filter 3-9,1GHz-1.5GHz low pass Wave filter 3-12 and single-pole double-throw switch (SPDT) (3-2,3-4,3-5,3-7,3-8,3-10,3-11,3-13) composition.4GHz-6GHz is low The common port of the output terminal connection single-pole double-throw switch (SPDT) 3-2 of bandpass filter 3-1, a not common end of single-pole double-throw switch (SPDT) 3-2 The input terminal of mouth connection 3GHz-4GHz low-pass filters 3-3, the output terminal connection hilted broadsword of 3GHz-4GHz low-pass filters 3-3 are double The common port of throw switch 3-4, a not common port connection 2GHz-3GHz low-pass filters 3-6's of single-pole double-throw switch (SPDT) 3-4 Input terminal, the common port of the output terminal connection single-pole double-throw switch (SPDT) 3-7 of 2GHz-3GHz low-pass filters 3-6, single-pole double-throw switch (SPDT) The input terminal of a not common port connection 1.5GHz-2GHz low-pass filters 3-9 of 3-7,1.5GHz-2GHz low-pass filters The common port of the output terminal connection single-pole double-throw switch (SPDT) 3-10 of 3-9, a not common port connection of single-pole double-throw switch (SPDT) 3-10 The input terminal of 1GHz-1.5GHz low-pass filters 3-12, the output terminal connection hilted broadsword of 1GHz-1.5GHz low-pass filters 3-12 are double A not common port of throw switch 3-13, thus constitutes the series via of each wave filter.In addition, single-pole double-throw switch (SPDT) Another not common end of (3-2,3-4,3-7,3-10,3-13) and single-pole double-throw switch (SPDT) (3-5,3-8,3-11) are cut by switch Change between each wave filter is realized in control and be connected in parallel.
Such as the signal of a 5GHz first passes around 4GHz-6GHz low-pass filters 3-1, Ran Houjing when passing through the path Cross single-pole double-throw switch (SPDT) 3-2 and enter parallel port afterwards, successively by single-pole double-throw switch (SPDT) 3-5, single-pole double-throw switch (SPDT) 3-8 and list It is last after double-pole double throw switch 3-11 to be output to late-class circuit by single-pole double-throw switch (SPDT) 3-13；When a 1.8GHz signal passes through During path, by accordingly being controlled each switch, make signal successively by 4GHz-6GHz low-pass filters 3-1, single-pole double throw It is double to switch 3-2,3GHz-4GHz low-pass filter 3-3, single-pole double-throw switch (SPDT) 3-4,2GHz-3GHz low-pass filter 3-6, hilted broadsword Enter 1.5GHz-2GHz low-pass filter 3-9 after throw switch 3-7, subsequently into single-pole double-throw switch (SPDT) 3-10, by hilted broadsword Commutator 3-10 carries out switch selection control, signal is entered single-pole double-throw switch (SPDT) 3-11, finally by single-pole double-throw switch (SPDT) Late-class circuit is output to after 3-13.This series and parallel combined switch filtering mode is in parallel merely compared to traditional wave filter Switch filtering mode can efficiently reduce circuit area.And each serial wave filter group median filter puts in order Arranged from high to low according to filtering frequency range, the signal of such low-frequency range can first pass through after high-frequency band filter again by pair The wave filter of frequency range is answered, so as to preferably suppress to export the higher hamonic wave of signal, is solved special by filter parasitic passband Property the harmonics restraint that brings the problem of reducing.
The mode that the present invention has abandoned mixing on the basis of original signal generation scheme produces low frequency signal, introduces Multistage D flip-flop frequency division scheme and new series and parallel combined switch filtering component for low-band signal, so that real The ultralow harmonic signal output of super Low phase noise in the range of the full frequency band of covering 1MHz-6GHz is showed.
Compared with prior art, the output area of Low phase noise signal has been extended down into 1MHz by the present invention, is realized and is covered The super Low phase noise output of lid full frequency band 1MHz-6GHz；The new type series-parallel connected composite switch filtering unit that the present invention designs and original There is parallel switch filtering component to compare the circuit area and preferably harmonic wave index for possessing smaller, may advantageously facilitate The miniaturization of instrument and equipment.
The invention also provides a kind of using the 1MHz-6GHz signal generating methods that divide entirely, its realization principle with it is above-mentioned The 1MHz-6GHz signal generating circuits divided entirely are identical, and which is not described herein again.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.

Claims (10)

  1. It is 1. a kind of using the 1MHz-6GHz signal generating circuits divided entirely, it is characterised in that including：
    First variable dividing radio frequency divider and the second variable dividing radio frequency divider, first switch unit and second switch unit, A string of parallel multiplex switch filtering units and the second connection in series-parallel variable connector filter unit and cascaded by multistage D flip-flop The frequency unit of composition；
    The 3GHz-6GHz signals of input pass through after 1/2/4/8 variable dividing radio frequency divider of two-stage, produce 46.875MHz-6GHz Low phase noise signal；Wherein, the signal of 187.5MHz-6GHz frequency ranges is opened by first switch unit into the first connection in series-parallel multichannel Close filter unit, after exported after second switch unit；The signal of 46.875MHz-187.5MHz frequency ranges passes through first switch Enter frequency unit after unit, produce 1MHz-187.5MHz signals, subsequently into the second connection in series-parallel variable connector filter unit, Finally merge after second switch unit with 187.5MHz-6GHz signals and form 1MHz-6GHz signal outputs.
  2. It is 2. as claimed in claim 1 a kind of using the 1MHz-6GHz signal generating circuits divided entirely, it is characterised in that
    The frequency unit is in series by 6 grades of D flip-flops, realizes a two divided-frequency per stage D-type flip flop, passes through switch Array is controlled D flip-flop cascade circuit, realizes 1,/2/,4/8,/16,/32,/64 7 kinds of frequency dividing ratio patterns respectively, to input 46.875MHz-187.5MHz signals accordingly divided, the final ultralow phase noise cancellation signal output for producing 1MHz-187.5MHz.
  3. It is 3. as claimed in claim 1 a kind of using the 1MHz-6GHz signal generating circuits divided entirely, it is characterised in that
    The first connection in series-parallel variable connector filter unit and the second connection in series-parallel variable connector filter unit are by four groups of strings in parallel Line filter group is formed by switching selection, wherein per string formation line filter group again by the wave filter of several difference filtering frequency ranges It is in series, filters in series circuit is controlled by switch arrays, the path passed through by switch selection signal, it is real Now it is connected in parallel between each wave filter, so as to fulfill the filtering serial implementation of different frequency range.
  4. It is 4. as claimed in claim 3 a kind of using the 1MHz-6GHz signal generating circuits divided entirely, it is characterised in that
    The signal of 187.5MHz-6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit, the first connection in series-parallel variable connector Filter unit includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group, and by opening all the way Close array and select corresponding low-pass filter in the serial wave filter group in the road, and then be combined into different filtering frequency ranges；
    The ultralow phase noise cancellation signal of 1MHz-187.5MHz enters the second connection in series-parallel variable connector filter unit, the second connection in series-parallel multichannel Switch filtering unit includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group, and leading to all the way Cross switch arrays and select corresponding low-pass filter in the serial wave filter group in the road, and then be combined into different filtering frequency ranges.
  5. It is 5. as claimed in claim 3 a kind of using the 1MHz-6GHz signal generating circuits divided entirely, it is characterised in that each Putting in order for a serial wave filter group median filter is arranged from high to low according to filtering frequency range, and the signal of low-frequency range first passes through Cross after high-frequency band filter the wave filter Jing Guo corresponding frequency band again.
  6. It is 6. a kind of using the 1MHz-6GHz signal generating methods divided entirely, it is characterised in that
    The 3GHz-6GHz signals of input pass through after 1/2/4/8 variable dividing radio frequency divider of two-stage, produce 46.875MHz-6GHz Low phase noise signal；Wherein, the signal of 187.5MHz-6GHz frequency ranges is opened by first switch unit into the first connection in series-parallel multichannel Close filter unit, after exported after second switch unit；The signal of 46.875MHz-187.5MHz frequency ranges passes through first switch Enter frequency unit after unit, the ultralow phase noise cancellation signal of 1MHz-187.5MHz is produced, subsequently into the second connection in series-parallel variable connector Filter unit, finally merges with 187.5MHz-6GHz Low phase noise low harmony wave signals after second switch unit and forms 1MHz- 6GHz surpasses the ultralow harmonic signal output of Low phase noise.
  7. It is 7. as claimed in claim 6 a kind of using the 1MHz-6GHz signal generating methods divided entirely, it is characterised in that
    The frequency unit is in series by 6 grades of D flip-flops, realizes a two divided-frequency per stage D-type flip flop, passes through switch Array is controlled D flip-flop cascade circuit, realizes 1,/2/,4/8,/16,/32,/64 7 kinds of frequency dividing ratio patterns respectively, to input 46.875MHz-187.5MHz signals accordingly divided, the final ultralow phase noise cancellation signal output for producing 1MHz-187.5MHz.
  8. It is 8. as claimed in claim 6 a kind of using the 1MHz-6GHz signal generating methods divided entirely, it is characterised in that
    The first connection in series-parallel variable connector filter unit and the second connection in series-parallel variable connector filter unit are by four groups of strings in parallel Line filter group is formed by switching selection, wherein per string formation line filter group again by the wave filter of several difference filtering frequency ranges It is in series, filters in series circuit is controlled by switch arrays, the path passed through by switch selection signal, it is real Now it is connected in parallel between each wave filter, so as to fulfill the filtering serial implementation of different frequency range.
  9. It is 9. as claimed in claim 8 a kind of using the 1MHz-6GHz signal generating methods divided entirely, it is characterised in that
    The signal of 187.5MHz-6GHz frequency ranges enters the first connection in series-parallel variable connector filter unit, the first connection in series-parallel variable connector Filter unit includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group, and by opening all the way Close array and select corresponding low-pass filter in the serial wave filter group in the road, and then be combined into different filtering frequency ranges；
    The ultralow phase noise cancellation signal of 1MHz-187.5MHz enters the second connection in series-parallel variable connector filter unit, the second connection in series-parallel multichannel Switch filtering unit includes the serial wave filter group of two-way parallel connection, by switching selection wherein serial wave filter group, and leading to all the way Cross switch arrays and select corresponding low-pass filter in the serial wave filter group in the road, and then be combined into different filtering frequency ranges.
  10. It is 10. as claimed in claim 8 a kind of using the 1MHz-6GHz signal generating methods divided entirely, it is characterised in that each Putting in order for a serial wave filter group median filter is arranged from high to low according to filtering frequency range, and the signal of low-frequency range first passes through Cross after high-frequency band filter the wave filter Jing Guo corresponding frequency band again.
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Citations (4)

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