CN110336573A - A kind of X-band Larger Dynamic receiver - Google Patents
A kind of X-band Larger Dynamic receiver Download PDFInfo
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- CN110336573A CN110336573A CN201910456536.7A CN201910456536A CN110336573A CN 110336573 A CN110336573 A CN 110336573A CN 201910456536 A CN201910456536 A CN 201910456536A CN 110336573 A CN110336573 A CN 110336573A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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Abstract
The invention discloses a kind of X-band Larger Dynamic receivers to be sent to big signal coupling channel and small signal path after echo-signal is by limiter and coupler respectively；Near region echo-signal is strong, into big signal coupling channel after be sent to dual input intermediate frequency digital receiver, small signal receiving channel is output to the signal of dual input intermediate frequency digital receiver and casts out due to occurring being saturated at this time；Far field echo-signal is weak, into small signal receiving channel after be sent to dual input intermediate frequency digital receiver, the signal that big signal coupling channel is output to dual input intermediate frequency digital receiver at this time is cast out due to its poor signal to noise than small signal receiving channel signal；Far field echo-signal and near region echo-signal are spliced with signal processing unit, obtain the echo-signal in complete receiving area.The present invention has expanded the dynamic range of receiving of receiver, and the Larger Dynamic for realizing X-band receives.
Description
Technical field
The present invention relates to the radar exploration technique field, especially a kind of X-band Larger Dynamic receiver.
Background technique
Receiver, that is, receiver is one of key components of radar system, and dynamic range of receiving is the key that receiver
Technical indicator.
As modern radar develops, currently, there are two ways to improving the dynamic range of receiving of radar receiver: one is
The dynamic range of receiving of the analog channel of receiver is improved, another kind is to expand receiver in digital field using pulse compression technology
Dynamic range of receiving.In addition to this, usually also both methods is used in combination to improve the dynamic range of receiving of complete machine.
Summary of the invention
In order to overcome above-mentioned defect in the prior art, the present invention provides a kind of X-band Larger Dynamic receiver, first passes through big
After signal coupling channel and signal path carry out subregion reception to echo-signal, then it is by signal processing unit that subregion is received
Echo-signal carries out signal splicing, to obtain the echo-signal in complete receiving area, the dynamic for having expanded receiver is received
Range, the Larger Dynamic for realizing X-band receive.
To achieve the above object, the present invention uses following technical scheme, comprising:
A kind of X-band Larger Dynamic receiver, including following component part: limiter, coupler, big signal coupling channel,
Small signal path, dual input intermediate frequency digital receiver；
Wherein, the input terminal of the output end connection coupler of limiter；The coupled output of coupler connects big signal coupling
Close the input terminal in channel；The straight-through output end of coupler connects the input terminal of small signal path；The output of big signal coupling channel
The output end of end and small signal path is connected to dual input intermediate frequency digital receiver；
The big signal coupling channel is used to send more than the echo letter of setting intensity to dual input intermediate frequency digital receiver
Number；
The small signal path is used to send the echo-signal lower than setting intensity to dual input intermediate frequency digital receiver.
Be sequentially connected according to signal transmission direction in the big signal coupling channel include: intermediate power amplifier, isolator,
Radio frequency mirror filter, a frequency mixer, an intermediate-frequency filter I, an intermediate frequency amplifier, an intermediate-frequency filter II, secondary mixing
Device, two intermediate-frequency filter I, two intermediate frequency amplifiers, two intermediate-frequency filter II.
Being sequentially connected in the small signal path according to signal transmission direction includes: low-noise amplifier, isolator, radio frequency
Mirror filter, a frequency mixer, an intermediate-frequency filter I, an intermediate frequency amplifier, an intermediate-frequency filter II, secondary mixing device, two
Intermediate-frequency filter I, two intermediate frequency amplifiers, two intermediate-frequency filter II.
In the big signal coupling channel,
The signal that the intermediate power amplifier is used to input it amplifies；The model of the intermediate power amplifier
GVA-123+；
The model ZIM3-9394-Y-M of the isolator；
The radio frequency mirror filter selects filter of the air with line cavity body structure；The type of the radio frequency mirror filter
Number be CS-QT/B9370M120-02PD1L.
Frequency mixer is the integrated double balanced mixer of Larger Dynamic, high-isolation；The type of frequency mixer
Number be HMC220MS8, producer be ADI company；
The radiofrequency signal and local oscillation signal that the one intermediate-frequency filter I is used to be leaked after being mixed a frequency mixer
Inhibited to filter out；The model LFCN-1400+ of the one intermediate-frequency filter I, producer are MINI company；
One intermediate frequency amplifier is for amplifying the intermediate-frequency filter I intermediate-freuqncy signal exported；Described one
The model ERA-5SM+ of intermediate frequency amplifier, producer are MINI company；
The one intermediate-frequency filter II be 1260MHz band logical LC lumped wave filter, for an intermediate frequency amplifier into
The mirror image radio frequency of higher hamonic wave generated and an intermediate frequency is filtered out after row amplification；The model of the one intermediate-frequency filter II
CS-LC/B1260M15-01C07L；
The secondary mixing device is the integrated double balanced mixer of Larger Dynamic, high-isolation；The type of the secondary mixing device
Number be HMC208MS8, producer be ADI company；
The radiofrequency signal and local oscillation signal that the two intermediate-frequency filters I is used to be leaked after being mixed secondary mixing device
Inhibited to filter out；The model LFCN-630+ of the two intermediate-frequency filters I, producer are MINI company；
Two intermediate frequency amplifier is for amplifying two intermediate-frequency filter I, two intermediate-freuqncy signals exported；Described two
The model SGA5689 of intermediate frequency amplifier, producer are MINI company；
The two intermediate-frequency filters II is 60MHz band logical LC lumped wave filter, for carrying out to two intermediate frequency amplifiers
Higher hamonic wave generated is filtered out after amplification；The model CS-LC/B60M5-01C07L of the two intermediate-frequency filters II.
In the small signal path,
The low-noise amplifier uses HEMT high electron mobility low-noise tube device；The type of the low-noise amplifier
Number be WFD070110-L11 or WFD070130-L14；
The model ZIM3-9394-Y-M of the isolator；
The radio frequency mirror filter selects filter of the air with line cavity body structure；The type of the radio frequency mirror filter
Number be CS-QT/B9370M120-02PD1L；
Frequency mixer is the integrated double balanced mixer of Larger Dynamic, high-isolation；The type of frequency mixer
Number be HMC220MS8, producer be ADI company；
The radiofrequency signal and local oscillation signal that the one intermediate-frequency filter I is used to be leaked after being mixed a frequency mixer
Inhibited to filter out；The model LFCN-1400+ of the one intermediate-frequency filter I, producer are MINI company；
One intermediate frequency amplifier is for amplifying the intermediate-frequency filter I intermediate-freuqncy signal exported；Described one
The model ERA-5SM+ of intermediate frequency amplifier, producer are MINI company；
The one intermediate-frequency filter II be 1260MHz band logical LC lumped wave filter, for an intermediate frequency amplifier into
The mirror image radio frequency of higher hamonic wave generated and an intermediate frequency is filtered out after row amplification；The model of the one intermediate-frequency filter II
CS-LC/B1260M15-01C07L；
The secondary mixing device is the integrated double balanced mixer of Larger Dynamic, high-isolation；The type of the secondary mixing device
Number be HMC208MS8, producer be ADI company.
The radiofrequency signal and local oscillation signal that the two intermediate-frequency filters I is used to be leaked after being mixed secondary mixing device
Inhibited to filter out；The model LFCN-630+ of the two intermediate-frequency filters I, producer are MINI company；
Two intermediate frequency amplifier is for amplifying two intermediate-frequency filter I, two intermediate-freuqncy signals exported；Described two
The model SGA5689 of intermediate frequency amplifier, producer are MINI company；
The two intermediate-frequency filters II is 60MHz band logical LC lumped wave filter, for carrying out to two intermediate frequency amplifiers
Higher hamonic wave generated is filtered out after amplification；The model CS-LC/B60M5-01C07L of the two intermediate-frequency filters II.
The output end for inputting intermediate frequency digital receiver is connected to signal processing unit；The signal processing unit be used for into
Row signal splicing, splices far field echo-signal and near region echo-signal, obtains the echo in complete receiving area
Signal.
When radar works, after echo-signal is by limiter and coupler, it is sent to big signal coupling channel and small letter respectively
Number channel；And receiving area is divided near region and far field, near region echo-signal is strong, into big signal coupling channel after be sent to dual input
Intermediate frequency digital receiver, small signal receiving channel is output to the signal of dual input intermediate frequency digital receiver due to being saturated at this time
And cast out；Far field echo-signal is weak, into small signal receiving channel after be sent to dual input intermediate frequency digital receiver, big signal at this time
Coupling channel is output to the signal of dual input intermediate frequency digital receiver due to its poor signal to noise than small signal receiving channel signal
And cast out.
The present invention has the advantages that
(1) after the present invention first passes through big signal coupling channel and signal path to echo-signal progress subregion reception, then lead to
It crosses signal processing unit and the received echo-signal of subregion is subjected to signal splicing, to obtain the echo letter in complete receiving area
Number, the dynamic range of receiving of receiver is expanded, the Larger Dynamic for realizing X-band receives.
(2) use HEMT high electron mobility low-noise tube device excellent to obtain in the low-noise amplifier in the present invention
Low noise and high-gain performance, and accurate small signal S-parameters and noise spy are first established according to device data its design is upper
Model is levied, optimizes and comprehensively considers the packaging technology factor of circuit by CAD software, fully ensure that the realizability of index, together
When, the overall noise temperature characterisitic index to guarantee circuit is optimal, and the prime of low-noise amplifier is former using optimum noise matching
It is then designed, rear class is designed using maximum gain matching principle.
(3) image-rejection filter of the invention uses filter of the air with line chamber fluid filter structure, can be realized
Insertion Loss and degree of suppression performance are taken into account, and under the premise of guaranteeing that mirror inhibits index, reduce the Insertion Loss value of filter itself as far as possible.
Detailed description of the invention
Fig. 1 is a kind of received schematic diagram of X-band Larger Dynamic of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of X-band Larger Dynamic receiver of the invention, the receiver includes following component part:
Limiter 1, coupler 2, big signal coupling channel 3, small signal path 4, dual input intermediate frequency digital receiver 5.
Wherein, the input terminal of the output end connection coupler 2 of limiter 1, the coupled output of coupler 2 connect big signal
The input terminal of coupling channel 3, the straight-through output end of coupler 2 connect the input terminal of small signal path 4；Big signal coupling channel 3
Output end and the output end of small signal path 4 be connected to dual input intermediate frequency digital receiver 5.
The big signal coupling channel 3 is used to send more than the echo of setting intensity to dual input intermediate frequency digital receiver 5
Signal.The small signal path 4 is used to send the echo-signal lower than setting intensity to dual input intermediate frequency digital receiver 5.
When radar works, echo-signal by after limiter 1 and coupler 2, being sent to big signal coupling channel 3 and small respectively
Signal path 4；And receiving area is divided near region and far field, near region echo-signal is strong, into big signal coupling channel 3 after be sent to it is double
Input intermediate frequency digital receiver 5, at this time small signal receiving channel 4 be output to the signal of dual input intermediate frequency digital receiver 5 due to
Appearance is saturated and casts out；Far field echo-signal is weak, into small signal receiving channel 4 after be sent to dual input intermediate frequency digital receiver 5,
Big signal coupling channel 3 is output to the signal of dual input intermediate frequency digital receiver 5 since it is believed than small signal receiving channel at this time
Number poor signal to noise and cast out.
The output end of dual input intermediate frequency digital receiver 5 is connected to signal processing unit 6, signal processing unit 6 is used for
Signal splicing is carried out, far field echo-signal and near region echo-signal are spliced, obtains returning in complete receiving area
Wave signal.
The limiter 1 is used to ensure that the low-noise amplifier 401 in signal path 5 not to be damaged in transmitter work
It is bad.
The coupler 2 selects the microstrip filter of HFSS software emulation design, and standing wave is less than or equal to 1.5, insertion damage
Consumption is less than 0.2dB, degree of coupling 20dB, and isolation is greater than 25dB.
As shown in Figure 1, it is sequentially connected in the big signal coupling channel 3 according to signal transmission direction and includes:
Intermediate power amplifier 301, intermediate power amplifier 302, in 303, frequency mixers 304, one of radio frequency mirror filter
Frequency filter I 305, an intermediate frequency amplifier 306, an intermediate-frequency filter II 307, secondary mixing device 308, two intermediate-frequency filter I
309, two intermediate frequency amplifiers 310, two intermediate-frequency filter II 311.
The intermediate power amplifier 301 is for amplifying the signal inputted.In the present embodiment, intermediate power amplifier
301 model GVA-123+, gain amplifier 8dB, standing wave are less than or equal to 1.3.
The standing wave that the intermediate power amplifier 302 is used to improve channel realizes the matching of intermodule.In the present embodiment, middle function
The model ZIM3-9394-Y-M of rate amplifier 302, isolation are greater than 25dB, and standing wave is less than 1.15.
The radio frequency mirror filter 303 selects filter of the air with line cavity body structure；In the present invention, it is desirable that described to penetrate
Frequency mirror filter 303 can combine Insertion Loss and inhibition, under the premise of guaranteeing that mirror image inhibits index, as far as possible
The Insertion Loss value of filter itself is reduced, therefore, filter of the air with line cavity body structure is selected to filter as the radio frequency mirror image
Device 303.In the present embodiment, it is outer to can be realized band by the model CS-QT/B9370M120-02PD1L of radio frequency mirror filter 303
Image frequency degree of suppression be better than 55dBc, Insertion Loss value be less than 2dB, standing wave is less than 1.2.
Frequency mixer 304 is the integrated double balanced mixer of Larger Dynamic, high-isolation.In the present embodiment, once
The model HMC220MS8 of frequency mixer 304, producer are ADI company, and 1dB inputs compression point 8dBm, mixing loss 7dB, once
The local oscillation signal L01 that frequency mixer 404 is inputted is better than 20dB to intermediate frequency isolation, is better than 17dB to radio frequency isolation degree.
After the one intermediate-frequency filter I 305 is used to be mixed a frequency mixer 304 radiofrequency signal that is leaked and
Local oscillation signal is inhibited to filter out, to obtain an intermediate-freuqncy signal of high accurancy and precision.In the present embodiment, an intermediate-frequency filter I
305 model LFCN-1400+, producer are MINI company, are greater than to the inhibition of the radiofrequency signal and local oscillation signal that are leaked
15dB。
One intermediate frequency amplifier 306 is for amplifying an intermediate-frequency filter I 305 intermediate-freuqncy signal exported.
In the present embodiment, the model ERA-5SM+ of an intermediate frequency amplifier 306, producer is MINI company, gain amplifier 19dB, standing wave
Less than 1.3.
The one intermediate-frequency filter II 307 is 1260MHz band logical LC lumped wave filter, for amplifying to an intermediate frequency
Device 306 amplifies rear higher hamonic wave generated and the mirror image radio frequency of an intermediate frequency is filtered out.In the present embodiment, intermediate frequency filter
The model CS-LC/B1260M15-01C07L of wave device II 307, centre frequency 1260MHz, 1dB bandwidth are 15MHz,
Out-of-band rejection degree in the case where 1310MHz is more than or equal to 30dB, is less than 6dB with interior Insertion Loss, standing wave is less than 1.4.
The secondary mixing device 308 is the integrated double balanced mixer of Larger Dynamic, high-isolation.It is secondary in the present embodiment
The model HMC208MS8 of frequency mixer 308, producer are ADI company, and 1dB inputs compression point 7dBm, and 9dB is lost in mixing, secondary
The local oscillation signal L02 that frequency mixer 408 is inputted is better than 13dB to intermediate frequency isolation, is better than 20dB to radio frequency isolation degree.
After the two intermediate-frequency filters I 309 is used to be mixed secondary mixing device 308 radiofrequency signal that is leaked and
Local oscillation signal is inhibited to filter out, to obtain two intermediate-freuqncy signals of high accurancy and precision.In the present embodiment, two intermediate-frequency filter I
309 model LFCN-630+, producer are MINI company, are greater than to the inhibition of the radiofrequency signal and local oscillation signal that are leaked
66dB is less than 6dB with interior Insertion Loss, and standing wave is less than 1.4.
Two intermediate frequency amplifier 310 is for amplifying two intermediate-frequency filter I 309, two intermediate-freuqncy signals exported.
In the present embodiment, the model SGA5689 of two intermediate frequency amplifiers 310, producer is MINI company, gain amplifier 30dB, standing wave
Less than 1.4.
The two intermediate-frequency filters II 311 is 60MHz band logical LC lumped wave filter, for two intermediate frequency amplifiers
310, which amplify rear higher hamonic wave generated, is filtered out.In the present embodiment, the model of two intermediate-frequency filter II 311
CS-LC/B60M5-01C07L, centre frequency 60MHz, 1dB bandwidth be 5MHz, in the case where 1310MHz with outer suppression
System is more than or equal to 66dB, is less than 1dB with interior Insertion Loss, standing wave is less than 1.3.
As shown in Figure 1, it is sequentially connected in the small signal path 4 according to signal transmission direction and includes:
Low-noise amplifier 401, isolator 402, radio frequency mirror filter 403, frequency mixers 404, an intermediate frequency filterings
Device I 405, an intermediate frequency amplifier 406, an intermediate-frequency filter II 407, secondary mixing device 408, two intermediate-frequency filter I 409, two
Intermediate frequency amplifier 410, two intermediate-frequency filter II 411.
The low-noise amplifier 401 uses HEMT high electron mobility low-noise tube device, to obtain excellent low
The performance of noise and high-gain.In the present embodiment, low-noise amplifier 401 selects WFD070110-L11 or WFD070130-
L14, and accurate small signal S-parameters and noise characteristic model are first established according to device data in design, it is excellent by CAD software
The packaging technology factor for changing and comprehensively considering circuit fully ensures that the realizability of index, meanwhile, to guarantee that the entirety of circuit is made an uproar
Sound temperature characterisitic index is optimal, and the prime of low-noise amplifier is designed using optimum noise matching principle, and rear class is using most
Large gain matching principle is designed, and realizes the gain of 33dB, noise coefficient is less than 1.4.
The standing wave that the isolator 402 is used to improve channel realizes the matching of intermodule.In the present embodiment, isolator 402
Model ZIM3-9394-Y-M, isolation be greater than 25dB, standing wave is less than 1.15.
The radio frequency mirror filter 403 selects filter of the air with line cavity body structure；In the present invention, it is desirable that described to penetrate
Frequency mirror filter 403 can combine Insertion Loss and inhibition, under the premise of guaranteeing that mirror image inhibits index, as far as possible
The Insertion Loss value of filter itself is reduced, therefore, filter of the air with line cavity body structure is selected to filter as the radio frequency mirror image
Device 403.In the present embodiment, it is outer to can be realized band by the model CS-QT/B9370M120-02PD1L of radio frequency mirror filter 403
Image frequency degree of suppression be better than 55dBc, Insertion Loss value be less than 2dB, standing wave is less than 1.2.
Frequency mixer 404 is the integrated double balanced mixer of Larger Dynamic, high-isolation.In the present embodiment, once
The model HMC220MS8 of frequency mixer 404, producer are ADI company, and 1dB inputs compression point 8dBm, mixing loss 7dB, once
The local oscillation signal L01 that frequency mixer 404 is inputted is better than 20dB to intermediate frequency isolation, is better than 17dB to radio frequency isolation degree.
After the one intermediate-frequency filter I 405 is used to be mixed a frequency mixer 404 radiofrequency signal that is leaked and
Local oscillation signal is inhibited to filter out, to obtain an intermediate-freuqncy signal of high accurancy and precision.In the present embodiment, an intermediate-frequency filter I
405 model LFCN-1400+, producer are MINI company, are greater than to the inhibition of the radiofrequency signal and local oscillation signal that are leaked
15dB。
One intermediate frequency amplifier 406 is for amplifying an intermediate-frequency filter I 405 intermediate-freuqncy signal exported.
In the present embodiment, the model ERA-5SM+ of an intermediate frequency amplifier 406, producer is MINI company, gain amplifier 19dB, standing wave
Less than 1.3.
The one intermediate-frequency filter II 407 is 1260MHz band logical LC lumped wave filter, for amplifying to an intermediate frequency
Device 406 amplifies rear higher hamonic wave generated and the mirror image radio frequency of an intermediate frequency is filtered out.In the present embodiment, intermediate frequency filter
The model CS-LC/B1260M15-01C07L of wave device II 407, centre frequency 1260MHz, 1dB bandwidth are 15MHz,
Out-of-band rejection degree in the case where 1310MHz is more than or equal to 30dB, is less than 6dB with interior Insertion Loss, standing wave is less than 1.4.
The secondary mixing device 408 is the integrated double balanced mixer of Larger Dynamic, high-isolation.It is secondary in the present embodiment
The model HMC208MS8 of frequency mixer 408, producer are ADI company, and 1dB inputs compression point 7dBm, and 9dB is lost in mixing, secondary
The local oscillation signal L02 that frequency mixer 408 is inputted is better than 13dB to intermediate frequency isolation, is better than 20dB to radio frequency isolation degree.
After the two intermediate-frequency filters I 409 is used to be mixed secondary mixing device 408 radiofrequency signal that is leaked and
Local oscillation signal is inhibited to filter out, to obtain two intermediate-freuqncy signals of high accurancy and precision.In the present embodiment, two intermediate-frequency filter I
409 model LFCN-630+, producer are MINI company, are greater than to the inhibition of the radiofrequency signal and local oscillation signal that are leaked
66dB is less than 6dB with interior Insertion Loss, and standing wave is less than 1.4.
Two intermediate frequency amplifier 410 is for amplifying two intermediate-frequency filter I 409, two intermediate-freuqncy signals exported.
In the present embodiment, the model SGA5689 of two intermediate frequency amplifiers 410, producer is MINI company, gain amplifier 30dB, standing wave
Less than 1.4.
The two intermediate-frequency filters II 411 is 60MHz band logical LC lumped wave filter, for two intermediate frequency amplifiers
410, which amplify rear higher hamonic wave generated, is filtered out.In the present embodiment, the model of two intermediate-frequency filter II 411
CS-LC/B60M5-01C07L, centre frequency 60MHz, 1dB bandwidth are 5MHz, Out-of-band rejection in the case where 120MHz
Degree is more than or equal to 60dB, is less than 1dB with interior Insertion Loss, standing wave is less than 1.3.
Big signal coupling channel 3 of the invention and small signal path 4 be using double superheterodyne receive system, and
A frequency mixer 304 for inputting big signal coupling channel 3 and a frequency mixer 404 for inputting small signal path 4 are same
Shake signal LO1；It inputs the secondary mixing device 308 of big signal coupling channel 3 and inputs the secondary mixing device 408 of small signal path 4
For the same local oscillation signal LO2.
The present embodiment, the dual input intermediate frequency digital receiver 5 are converted into I/Q letter for realizing by two-way intermediate-freuqncy signal
Number, maximum input intermediate-freuqncy signal is 15dB, is dynamically greater than 75dB.
Based on specific design method provided by the present embodiment, can be realized to-the 110dBm in receiving area~+
The Larger Dynamic echo-signal of 10dBm is received, and receiving area is divided near region and far field, wherein the small signal of echo power
As far field echo-signal, the big signal of the echo power are near region echo-signal；The p- 110dBm of small signal path 4~-
The echo-signal of 35dBm, that is, far field echo-signal is received, the echo letter of the p- 70dBm~+10dBm of big signal coupling channel 3
Number i.e. near region echo-signal received；Finally, the output of small signal path 4 and the output of big signal coupling channel 3 are sent
It is converted into i/q signal to dual input intermediate frequency digital receiver 5, dual input intermediate frequency digital receiver 5 sends out the i/q signal after conversion
It send to signal processing unit 6, is sent to signal processing unit 6 and carries out signal splicing, far field echo-signal and near region are returned
Wave signal is spliced, the echo-signal being spliced into the complete receiving area.The dynamic that the present invention has expanded receiver connects
Range is received, the reception of the Larger Dynamic range of receiving of the 120dB of X-band is realized.
The above is only the preferred embodiments of the invention, are not intended to limit the invention creation, all in the present invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the invention within the spirit and principle of creation
Within the scope of shield.
Claims (7)
1. a kind of X-band Larger Dynamic receiver, which is characterized in that including following component part: limiter (1), coupler (2),
Big signal coupling channel (3), small signal path (4), dual input intermediate frequency digital receiver (5)；
Wherein, the input terminal of output end connection coupler (2) of limiter (1)；The big letter of coupled output connection of coupler (2)
The input terminal of number coupling channel (3)；The straight-through output end of coupler (2) connects the input terminal of small signal path (4)；Big signal coupling
The output end of the output end and small signal path (4) that close channel (3) is connected to dual input intermediate frequency digital receiver (5)；
The big signal coupling channel (3) is used to send more than the echo of setting intensity to dual input intermediate frequency digital receiver (5)
Signal；
The small signal path (4) is used to send the echo-signal lower than setting intensity to dual input intermediate frequency digital receiver (5).
2. a kind of X-band Larger Dynamic receiver according to claim 1, which is characterized in that the big signal coupling channel
(3) be sequentially connected according to signal transmission direction includes: intermediate power amplifier (301), isolator (302), the filtering of radio frequency mirror image
Device (303), a frequency mixer (304), an intermediate-frequency filter I (305), an intermediate frequency amplifier (306), an intermediate-frequency filter II
(307), secondary mixing device (308), two intermediate-frequency filter I (309), two intermediate frequency amplifiers (310), two intermediate-frequency filter II
(311)。
3. a kind of X-band Larger Dynamic receiver according to claim 1, which is characterized in that in the small signal path (4)
Be sequentially connected according to signal transmission direction includes: low-noise amplifier (401), isolator (402), radio frequency mirror filter
(403), a frequency mixer (404), an intermediate-frequency filter I (405), an intermediate frequency amplifier (406), an intermediate-frequency filter II
(407), secondary mixing device (408), two intermediate-frequency filter I (409), two intermediate frequency amplifiers (410), two intermediate-frequency filter II
(411)。
4. a kind of X-band Larger Dynamic receiver according to claim 2, which is characterized in that the big signal coupling channel
(3) in,
The signal that the intermediate power amplifier (301) is used to input it amplifies；The intermediate power amplifier (301)
Model GVA-123+；
The model ZIM3-9394-Y-M of the isolator (302)；
The radio frequency mirror filter (303) selects filter of the air with line cavity body structure；The radio frequency mirror filter
(303) model CS-QT/B9370M120-02PD1L.
Frequency mixer (304) is the integrated double balanced mixer of Larger Dynamic, high-isolation；Frequency mixer
(304) model HMC220MS8, producer are ADI company；
The radiofrequency signal and sheet that the one intermediate-frequency filter I (305) is used to be leaked after being mixed a frequency mixer (304)
Vibration signal is inhibited to filter out；The model LFCN-1400+ of the one intermediate-frequency filter I (305), producer are MINI company；
One intermediate frequency amplifier (306) is for amplifying an intermediate-frequency filter I (305) intermediate-freuqncy signal exported；
The model ERA-5SM+ of one intermediate frequency amplifier (306), producer are MINI company；
The one intermediate-frequency filter II (307) is 1260MHz band logical LC lumped wave filter, for an intermediate frequency amplifier
(306) the mirror image radio frequency for amplifying rear higher hamonic wave generated and an intermediate frequency is filtered out；The one intermediate-frequency filter II
(307) model CS-LC/B1260M15-01C07L；
The secondary mixing device (308) is the integrated double balanced mixer of Larger Dynamic, high-isolation；The secondary mixing device
(308) model HMC208MS8, producer are ADI company；
The radiofrequency signal and sheet that the two intermediate-frequency filters I (309) is used to be leaked after being mixed secondary mixing device (208)
Vibration signal is inhibited to filter out；The model LFCN-630+ of the two intermediate-frequency filters I (309), producer are MINI company；
Two intermediate frequency amplifier (310) is for amplifying two intermediate-frequency filter I (309), two intermediate-freuqncy signals exported；
The model SGA5689 of two intermediate frequency amplifier (310), producer are MINI company；
The two intermediate-frequency filters II (311) is 60MHz band logical LC lumped wave filter, for two intermediate frequency amplifiers
(310) rear higher hamonic wave generated is amplified to be filtered out；The model CS-LC/ of the two intermediate-frequency filters II (311)
B60M5-01C07L。
5. a kind of X-band Larger Dynamic receiver according to claim 3, which is characterized in that the small signal path (4)
In,
The low-noise amplifier (401) uses HEMT high electron mobility low-noise tube device；The low-noise amplifier
(401) model WFD070110-L11 or WFD070130-L14；
The model ZIM3-9394-Y-M of the isolator (402)；
The radio frequency mirror filter (403) selects filter of the air with line cavity body structure；The radio frequency mirror filter
(403) model CS-QT/B9370M120-02PD1L；
Frequency mixer (404) is the integrated double balanced mixer of Larger Dynamic, high-isolation；Frequency mixer
(404) model HMC220MS8, producer are ADI company；
The radiofrequency signal and sheet that the one intermediate-frequency filter I (405) is used to be leaked after being mixed a frequency mixer (404)
Vibration signal is inhibited to filter out；The model LFCN-1400+ of the one intermediate-frequency filter I (405), producer are MINI company；
One intermediate frequency amplifier (406) is for amplifying an intermediate-frequency filter I (405) intermediate-freuqncy signal exported；
The model ERA-5SM+ of one intermediate frequency amplifier (406), producer are MINI company；
The one intermediate-frequency filter II (407) is 1260MHz band logical LC lumped wave filter, for an intermediate frequency amplifier
(406) the mirror image radio frequency for amplifying rear higher hamonic wave generated and an intermediate frequency is filtered out；The one intermediate-frequency filter II
(407) model CS-LC/B1260M15-01C07L；
The secondary mixing device (408) is the integrated double balanced mixer of Larger Dynamic, high-isolation；The secondary mixing device
(408) model HMC208MS8, producer are ADI company.
The radiofrequency signal and sheet that the two intermediate-frequency filters I (409) is used to be leaked after being mixed secondary mixing device (408)
Vibration signal is inhibited to filter out；The model LFCN-630+ of the two intermediate-frequency filters I (409), producer are MINI company；
Two intermediate frequency amplifier (410) is for amplifying two intermediate-frequency filter I (409), two intermediate-freuqncy signals exported；
The model SGA5689 of two intermediate frequency amplifier (410), producer are MINI company；
The two intermediate-frequency filters II (411) is 60MHz band logical LC lumped wave filter, for two intermediate frequency amplifiers
(410) rear higher hamonic wave generated is amplified to be filtered out；The model CS-LC/ of the two intermediate-frequency filters II (411)
B60M5-01C07L。
6. a kind of X-band Larger Dynamic receiver according to claim 1, which is characterized in that receive input intermediate frequency digital
The output end of machine (5) is connected to signal processing unit (6)；The signal processing unit (6) is right for carrying out signal splicing
Far field echo-signal and near region echo-signal are spliced, and the echo-signal in complete receiving area is obtained.
7. a kind of X-band Larger Dynamic receiver according to claim 1, which is characterized in that when radar works, echo-signal
After limiter (1) and coupler (2), it is sent to big signal coupling channel (3) and small signal path (4) respectively；And reception area
Domain is divided near region and far field, and near region echo-signal is strong, into big signal coupling channel (3) after be sent to dual input intermediate frequency digital reception
Machine (5), at this time small signal receiving channel (4) be output to the signal of dual input intermediate frequency digital receiver (5) be saturated due to occurring and
Cast out；Far field echo-signal is weak, into small signal receiving channel (4) after be sent to dual input intermediate frequency digital receiver (5), at this time greatly
Signal coupling channel (3) is output to the signal of dual input intermediate frequency digital receiver (5) since it is than small signal receiving channel signal
Poor signal to noise and cast out.
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Cited By (1)
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| CN113259048A (en) * | 2021-05-31 | 2021-08-13 | 成都雷通科技有限公司 | X-waveband high-power suppressing interference device |
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| CN205608175U (en) * | 2016-04-06 | 2016-09-28 | 安徽四创电子股份有限公司 | Five -way says that intermediate frequency digital receiving is quick -witted |
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Application publication date: 20191015 |