CN109728829A - A kind of high performance wideband Receiver Module - Google Patents
A kind of high performance wideband Receiver Module Download PDFInfo
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- CN109728829A CN109728829A CN201811639564.4A CN201811639564A CN109728829A CN 109728829 A CN109728829 A CN 109728829A CN 201811639564 A CN201811639564 A CN 201811639564A CN 109728829 A CN109728829 A CN 109728829A
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Abstract
The present invention discloses a kind of high performance wideband Receiver Module, including rf input port and clock input port, clock input port connects the input terminal of two road power splitters, one of output end of two road power splitters connects one of input terminal of the second frequency mixer, the another output of two road power splitters connects one of input terminal of the first frequency mixer, rf input port connects another input terminal of the first frequency mixer, the output end of first frequency mixer connects another input terminal of the second frequency mixer, the output end of second frequency mixer passes through sequentially connected second intermediate frequency filtering circuit, second IF amplifier circuit, second attenuator connects intermediate frequency delivery outlet with high dynamic amplifier.Only one rf input port of full frequency band；The reduction of Receiver Module volume, lower power consumption, module-integrated, miniaturization and low power dissipation design, simplify inside modules circuit.
Description
Technical field
The present invention relates to Receiver Module technical fields, it particularly relates to a kind of high performance wideband radio frequency receiving
Block.
Background technique
30MHz~8GHz high-performance reconnaissance equipment is widely used in national defence and commercial market.But equipment volume is big, weight
Weight, power consumption height all seriously restrict its application, are especially not suitable with portable use.How equipment power dissipation is reduced, reduces its body
Product, mitigating its weight is always the target that related research staff makes great efforts.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes a kind of high performance wideband Receiver Module, tool
There is instantaneous signal band wide, receiving sensitivity is high, and reception dynamic range is big, and the linearity is good, and selectivity is excellent, unit-modularized,
Low power dissipation design, it is small in size, light-weight, the features such as support with frequency/alien frequencies switch operating, 30MHz~8GHz prison can be widely applied
Survey direction finding or technical search receiver.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of high performance wideband Receiver Module, including rf input port and clock input port, the clock input port
The input terminal of two road power splitters is connected, one of output end of two road power splitter is shaken by sequentially connected second frequency
One of input terminal of device, the second local oscillator amplifying circuit the second frequency mixer of connection is swung, another of two road power splitter is defeated
Outlet passes through sequentially connected phase lock circuitry, loop filter circuit, first frequency oscillator, the first local oscillator amplifying circuit connection the
One of input terminal of one frequency mixer, the rf input port pass through sequentially connected limiter, the first attenuator, Working mould
Formula selection circuit, preselection filter group, low-noise amplifier connect another input terminal of first frequency mixer, and described first
The output end of frequency mixer connects another input terminal of second frequency mixer, the intermediate frequency by intermediate frequency filtering amplifying circuit group
Filter amplification circuit group includes two the first intermediate frequency filtering amplifying circuits parallel with one another, and the output end of second frequency mixer is logical
It crosses during sequentially connected second intermediate frequency filtering circuit, the second IF amplifier circuit, the second attenuator connect with high dynamic amplifier
Frequency delivery outlet.
Further, the frequency range of the received broadband signal of the rf input port is 30MHz~8GHz.
Further, the high performance wideband Receiver Module includes shell, the clock input port, intermediate frequency output
Mouth, rf input port are arranged on rear side of shell.
Further, two local oscillator input ports, a local oscillator input port and control mouth are additionally provided on rear side of the shell.
Further, the second local oscillator amplifying circuit is separately connected the second frequency by two local oscillator input port
Oscillator and second frequency mixer.
Further, the first local oscillator amplifying circuit is separately connected the first frequency by local oscillator input port
Oscillator and first frequency mixer.
Further, between the intermediate frequency filtering amplifying circuit group and first frequency mixer and the intermediate frequency filtering is put
Switching circuit, the switching circuit and operating mode selection electricity are provided between big circuit group and second frequency mixer
Road is all connected with the control mouth.
Beneficial effects of the present invention: realizing 30MHz~8GHz frequency range integrated design, only one radio frequency of full frequency band is defeated
Entrance；Receiver Module volume reduces 25%, lower power consumption 20%, module-integrated, miniaturization and low power dissipation design, simplifies
Inside modules circuits, reduce internal interference and production cost, simplify scheduling and planning process, improve the reliability of module
And maintainability.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the front view of the shell described according to embodiments of the present invention；
Fig. 2 is the side view of the shell described according to embodiments of the present invention；
Fig. 3 is the functional block diagram of the high performance wideband Receiver Module described according to embodiments of the present invention；
Fig. 4 is the circuit diagram one of the high performance wideband Receiver Module described according to embodiments of the present invention；
Fig. 5 is the circuit diagram two of the high performance wideband Receiver Module described according to embodiments of the present invention；
Fig. 6 is the circuit diagram three of the high performance wideband Receiver Module described according to embodiments of the present invention；
Fig. 7 is the circuit diagram four of the high performance wideband Receiver Module described according to embodiments of the present invention；
Fig. 8 is the circuit diagram five of the high performance wideband Receiver Module described according to embodiments of the present invention；
Fig. 9 is the circuit diagram six of the high performance wideband Receiver Module described according to embodiments of the present invention；
Figure 10 is the circuit diagram seven of the high performance wideband Receiver Module described according to embodiments of the present invention；
Figure 11 is the circuit diagram eight of the high performance wideband Receiver Module described according to embodiments of the present invention；
Figure 12 is the circuit diagram nine of the high performance wideband Receiver Module described according to embodiments of the present invention；
Figure 13 is the circuit diagram ten of the high performance wideband Receiver Module described according to embodiments of the present invention.
In figure:
1, clock input port；2, intermediate frequency delivery outlet；3, two local oscillator input port；4, a local oscillator input port；5, rf input port；
6, control mouth.
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, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in figures 1-13, a kind of high performance wideband Receiver Module according to embodiments of the present invention, including penetrate
Frequency input port 5 and clock input port 1, the clock input port 1 connect the input terminal of two road power splitters, two road power splitter
One of output end connects its of the second frequency mixer by sequentially connected second frequency oscillator, the second local oscillator amplifying circuit
In an input terminal, the another output of two road power splitter by sequentially connected phase lock circuitry, loop filter circuit,
First frequency oscillator, the first local oscillator amplifying circuit connect one of input terminal of the first frequency mixer, the rf input port 5
Connected by sequentially connected limiter, the first attenuator, operating mode selection circuit, preselection filter group, low-noise amplifier
Another input terminal of first frequency mixer is connect, the output end of first frequency mixer is connected by intermediate frequency filtering amplifying circuit group
Another input terminal of second frequency mixer is connect, the intermediate frequency filtering amplifying circuit group includes in parallel with one another two first
The output end of frequency filter amplification circuit, second frequency mixer passes through sequentially connected second intermediate frequency filtering circuit, the second intermediate frequency
Amplifying circuit, the second attenuator connect intermediate frequency delivery outlet 2 with high dynamic amplifier.
In a specific embodiment of invention, the frequency range of the received broadband signal of the rf input port 5 is
30MHz~8GHz.
In a specific embodiment of invention, the high performance wideband Receiver Module includes shell, the clock
Input port 1, intermediate frequency delivery outlet 2, rf input port 5 are arranged on rear side of shell.
In a specific embodiment of invention, it is defeated that two local oscillator input ports 3, a local oscillator are additionally provided on rear side of the shell
Entrance 4 and control mouth 6.
In a specific embodiment of invention, the second local oscillator amplifying circuit is divided by two local oscillator input port 3
The second frequency oscillator and second frequency mixer are not connected.
In a specific embodiment of invention, the first local oscillator amplifying circuit is divided by local oscillator input port 4
The first frequency oscillator and first frequency mixer are not connected.
In a specific embodiment of invention, between the intermediate frequency filtering amplifying circuit group and first frequency mixer with
And switching circuit, the switching circuit and institute are provided between the intermediate frequency filtering amplifying circuit group and second frequency mixer
It states operating mode selection circuit and is all connected with the control mouth 6.
In order to facilitate above-mentioned technical proposal of the invention is understood, below by way of specifically used mode to above-mentioned skill of the invention
Art scheme is described in detail.
CPCI handle is arranged in shell front side, and input/output interface is arranged in shell front side, and input/output interface includes clock
Input port 1, intermediate frequency delivery outlet 2, two local oscillator input ports 3, a local oscillator input port 4, rf input port 5 and control mouth 6.
High performance wideband Receiver Module (or being high-performance radio-frequency receiving module) of the present invention uses superhet
Double conversion scheme obtains the first intermediate-freuqncy signal after being first mixed the 30MHz~8GHz signal received with a local oscillation signal,
First intermediate-freuqncy signal obtains the output of the second intermediate frequency of 140MHz, the second intermediate-freuqncy signal after being mixed after filter and amplification with two local oscillation signals
Back-end digital signal processing unit is sent through intermediate frequency delivery outlet 2 equally after filter and amplification.So far, Receiver Module is by one
The broadband signal of 30MHz~8GHz generates the fixed intermediate frequency letter used for back-end digital signal processing unit after double conversion
Number, complete the frequency-conversion processing of entire signal.
Signal frequency conversion working principle: 30MHz~8GHz radiofrequency signal through rf input port 5, limiter, the first attenuator,
Operating mode selection circuit, preselection filter group, low-noise amplifier, the first frequency mixer, the first intermediate frequency filtering amplifying circuit,
The circuits groups such as two frequency mixers, the second intermediate frequency filtering circuit, the second IF amplifier circuit, the second attenuator and high dynamic amplifier
At to ensure that the performance indicators such as the receiving sensitivity of module, selectivity and dynamic.
Signal input: the signal of 30MHz~8GHz first passes through limiter, the first attenuator after the input of rf input port 5,
Clipping is carried out to big signal, will not damage to late-class circuit when guaranteeing the input of big signal；And to the signal by clipping
Carry out amplitude control makes input signal be in module and receives in dynamic range, guarantees the linear reception of signal.
Operation mode selection: for selecting Operation mode, Operation mode has operating mode selection circuit
Low noise and two kinds normal, low noise operating mode is to guarantee the reception to small signal.
Preselection filter group: being made of multiple groups filter, realizes the inhibition to out of band signal, improves receiving module to signal
The anti-interference ability of second harmonic, for the miniaturization for guaranteeing module, 30MHz~3GHz and 3GHz~8GHz radio-frequency front-end integration
Design.
Low-noise amplifier: for making up prime pre-selection amplifying circuit bring loss, receiving sensitivity is improved.
First frequency mixer: the signal of 30MHz~8GHz is after the filter and amplification of front-end circuit with a local oscillation signal first
Mixing is completed in frequency mixer device, obtains fixed the first intermediate-freuqncy signal output.
First intermediate frequency filtering amplifying circuit: to the first frequency mixer generate first in signal be filtered amplification, and to one
Local oscillation signal and harmonic signal are inhibited.
Second frequency mixer: the first intermediate-freuqncy signal and two local oscillation signals through filter and amplification are completed mixed in the second frequency mixer device
Frequently, fixed the second intermediate-freuqncy signal output is obtained.
Second intermediate frequency filtering circuit: the second intermediate-freuqncy signal generated to the second frequency mixer is filtered amplification, and to two
Vibration and harmonic signal are inhibited.
Second attenuator: the second IF amplifier circuit carries out amplitude control to the second intermediate-freuqncy signal after filter and amplification, makes
Signal in the range of linearity in high dynamic amplifier, guarantees the Linear Amplifer of signal in rear class amplification.
Non- grade amplification: high dynamic amplifier carries out afterbody amplification to the second intermediate-freuqncy signal of output, in order to guarantee to connect
The dynamic of receipts machine, high dynamic amplifier exports section value should be high as far as possible.
Local oscillation signal working principle: clock signal is through phase lock circuitry, loop filter circuit, first frequency oscillator, first
A local oscillation signal is formed after local oscillator amplifying circuit, a local oscillator uses big stepping, up-conversion scheme.30MHz~3GHz frequency range first
IF frequency is fixed near 5.2GHz, and a local frequency is LO=RF+IF1；The first IF frequency of 3GHz~8GHz frequency range is solid
It is scheduled near 2.27GHz, a local frequency is LO=RF+IF1.
Clock signal forms two local oscillation signals through second frequency oscillator, the second local oscillator amplifying circuit, and two local oscillators are using small
Stepping, down coversion scheme.Second IF frequency is 140MHz, and two local frequencies are LO=IF1-IF2.
Limiter uses the passive limiter of MINI company, will not additionally increase noise.
It is 1dB, maximum attenuation 31dB that input attenuation, which controls stepping,.
Preselection filter group is in type selecting, it is contemplated that direction-finding receiver to the stability of phase have it is higher ask, 30MHz~
800MHz frequency range guarantees the selectivity of the frequency range by differential amplification+LC low-pass filter；800MHz~3GHz frequency range is two
Grade LC filter；3GHz~8GHz uses the small-sized MEMS filter that specializes, and meets index request by two-stage cascade.
First frequency mixer device can not frequency mixer, isolation height and section value height using double flat weighing apparatus.
First intermediate frequency filtering amplifying circuit is made of the first intermediate-frequency filter and the first intermediate frequency amplifier.
First intermediate-frequency filter is used to filter out the local oscillation signal for leaking into intermediate frequency end and other useless mixed products, simultaneously
It is required that it provides image interference signal the inhibition for being greater than 100dB, using 2 grades of dielectric filters (i.e. two the first intermediate frequency filterings
Device) it cascades to realize.
First intermediate frequency amplifier proposed adoption low-noise amplifier can pass through impedance in input terminal for different working frequencies
Matching reaches optimum performance, and output end is without matching, simple circuit.
Second frequency mixer device equally uses double balanced passive mixers, and isolation is high and section value is high.
Second intermediate-frequency filter broadband is using the higher LC filter of selectivity；SAW filter, selectivity are selected in narrowband
It is poor, need two-stage cascade to use.
It is 1dB, maximum attenuation 31dB that second intermediate frequency attenuator input attenuation, which controls stepping,.
High dynamic amplifier, because the channel gain of receiver is mainly provided by two IF amplifier circuits, removes emphasis in type selecting
Consider outside linear index, preferentially selects low-noise device.Wherein, high dynamic amplifier uses the LT5514 of Analog company,
In working frequency 140MHz, OIP3 is up to 47dBm.
One local oscillation circuit mainly generates a local oscillation signal required for channel down, a local oscillation circuit by phase lock circuitry,
Loop filter circuit, first frequency oscillator, the first local oscillator amplifying circuit are constituted.
One local oscillation circuit is realized using phaselocked loop+VCO；VCO working frequency is 5GHz~10GHz；Loop is active puts
Greatly, tuning voltage is 0V~+18V, and representative value of mutually making an uproar is -105dBc/Hz@10kHz.
One local oscillation circuit phase demodulation chip uses the HMC704LP4E of Hittite company.1Hz normalizes noise floor representative value
For -233dBc/Hz.When loop bandwidth is 100kHz, locking time is 100 μ s, and a local frequency uses 6.4MHz stepping.
The noise of clock signal has by the influence that phaselocked loop is equivalent to by high-pass filter, to output phase noise
The characteristic of high pass, that is to say, that phase noise of the VCO in loop bandwidth is suppressed, but outside loop bandwidth, VCO's
Phase noise is barely affected.
Two local oscillation circuits mainly generate two local oscillation signal required for channel down, and a local oscillation circuit is shaken by second frequency
Swing device, the second local oscillator amplifying circuit is constituted.
The frequency of two local oscillation circuits is point frequency, and frequency converts in 6.4MHz frequency range, using single-chip VCO come real
Existing, which makes an uproar representative value as -110dBc/Hz@10kHz, and minimum resolution is less than 100Hz.Due to being used in two tunnels in scheme
Frequency designs, and therefore, two local oscillators need to use its fundamental frequency and first overtone frequency.
High performance wideband Receiver Module of the present invention uses straight prosecutor formula, and back-end digital signal processing unit is logical
Data line connection control mouth 6 is crossed to directly control.Simultaneously by 6 supply input of control mouth be 2 kinds of voltages, be respectively+18V and+
5.5V, total power consumption are controlled in 10W.
High performance wideband Receiver Module of the present invention uses module-integrated, miniaturization and low power dissipation design,
Simplify inside modules circuit, reduces inside modules interference and production cost, simplify scheduling and planning process, improve the reliability of module
And maintainability.Its main performance index is as follows:
In conclusion being high-performance using superhet double conversion scheme by means of above-mentioned technical proposal of the invention
The institutional guarantee of receiver；The use of 30MHz~3GHz frequency range preselection filter group is recommended amplification+LC low-pass filter circuit and is being protected
While card selectivity, the space and expense of 4 LC filters are saved；30MHz~8GHz frequency range shares local oscillation circuit and makes
Circuit design simple reduces module dissipation；High local oscillator scheme greatly improves image frequency and local oscillator reradiation performance；Channel
The design method that wide and narrow strip combines, the strong guarantee selectivity of receiving channel；Module has with frequency/alien frequencies switch operating side
Formula improves the ability of monitoring, the module-integrated application of direction finding.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of high performance wideband Receiver Module, which is characterized in that including rf input port (5) and clock input port (1),
The clock input port (1) connects the input terminal of two road power splitters, one of output end of two road power splitter by according to
One of input terminal of the second frequency oscillator of secondary connection, the second local oscillator amplifying circuit the second frequency mixer of connection, described two
The another output of road power splitter passes through sequentially connected phase lock circuitry, loop filter circuit, first frequency oscillator, first
Local oscillator amplifying circuit connects one of input terminal of the first frequency mixer, and the rf input port (5) passes through sequentially connected limit
Width device, the first attenuator, operating mode selection circuit, preselection filter group, low-noise amplifier connect first frequency mixer
Another input terminal, the output end of first frequency mixer connects second frequency mixer by intermediate frequency filtering amplifying circuit group
Another input terminal, the intermediate frequency filtering amplifying circuit group includes two the first intermediate frequency filtering amplifying circuits parallel with one another,
The output end of second frequency mixer is declined by sequentially connected second intermediate frequency filtering circuit, the second IF amplifier circuit, second
Subtract device and connects intermediate frequency delivery outlet (2) with high dynamic amplifier.
2. high performance wideband Receiver Module according to claim 1, which is characterized in that the rf input port (5)
The frequency range of received broadband signal is 30MHz~8GHz.
3. high performance wideband Receiver Module according to claim 1, which is characterized in that the high performance wideband radio frequency
Receiving module includes shell, after the clock input port (1), intermediate frequency delivery outlet (2), rf input port (5) are arranged at shell
Side.
4. high performance wideband Receiver Module according to claim 3, which is characterized in that the rear side of the shell is also set
It is equipped with two local oscillator input ports (3), a local oscillator input port (4) and control mouth (6).
5. high performance wideband Receiver Module according to claim 4, which is characterized in that the second local oscillator amplification electricity
Road is separately connected the second frequency oscillator and second frequency mixer by two local oscillator input port (3).
6. high performance wideband Receiver Module according to claim 4, which is characterized in that the first local oscillator amplification electricity
Road is separately connected the first frequency oscillator and first frequency mixer by local oscillator input port (4).
7. high performance wideband Receiver Module according to claim 4, which is characterized in that the intermediate frequency filtering amplification electricity
It is respectively provided between first frequency mixer described in Lu Zuyu and between the intermediate frequency filtering amplifying circuit group and second frequency mixer
There is switching circuit, the switching circuit and the operating mode selection circuit are all connected with the control mouth (6).
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| CN201811639564.4A CN109728829B (en) | 2018-12-29 | 2018-12-29 | High-performance broadband radio frequency receiving module |
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| CN201811639564.4A CN109728829B (en) | 2018-12-29 | 2018-12-29 | High-performance broadband radio frequency receiving module |
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| CN109728829B CN109728829B (en) | 2024-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117032394A (en) * | 2023-10-08 | 2023-11-10 | 成都世源频控技术股份有限公司 | High-frequency accuracy reference clock source |
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| CN209299240U (en) * | 2018-12-29 | 2019-08-23 | 同方电子科技有限公司 | A kind of high performance wideband Receiver Module |
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| CN102185662A (en) * | 2011-01-05 | 2011-09-14 | 东南大学 | High-frequency-band broadband multi-channel upward and downward frequency conversion module |
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| CN117032394B (en) * | 2023-10-08 | 2024-02-06 | 成都世源频控技术股份有限公司 | High-frequency accuracy reference clock source |
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| CN109728829B (en) | 2024-04-19 |
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