CN206313757U - A kind of Ka frequency ranges low-converter - Google Patents
A kind of Ka frequency ranges low-converter Download PDFInfo
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- CN206313757U CN206313757U CN201621422221.9U CN201621422221U CN206313757U CN 206313757 U CN206313757 U CN 206313757U CN 201621422221 U CN201621422221 U CN 201621422221U CN 206313757 U CN206313757 U CN 206313757U
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Abstract
The utility model discloses a kind of Ka frequency ranges low-converter, including：First LNA, the second LNA, the first wave filter, the second wave filter, modulator, combiner, harmonic mixer and frequency synthesizer；The first signal and secondary signal of first LNA and the second LNA respectively to receiving are amplified treatment；First wave filter receives first and amplifies signal and carry out filtering process, exports the first filtering signal；Second wave filter receives second and amplifies signal and carry out filtering process, exports the second filtering signal；Modulator receives the second filtering signal and treatment is modulated to the second filtering signal, exports the first modulated signal；Combiner is combined treatment to the first filtering signal and the first modulated signal, exports combining signal；The local oscillation signal that harmonic mixer is exported according to frequency synthesizer, combining signal is converted to the intermediate-freuqncy signal output of S frequency ranges.The utility model solves the problems, such as Low phase noise, the comprehensive integration of channel frequency that existing Ka frequency ranges low-converter is present.
Description
Technical field
The utility model belongs to radio circuit technical field, more particularly to a kind of Ka frequency ranges low-converter.
Background technology
Ka frequency ranges low-converter as tracking system important component, its performance and volume directly determine tracking system
The performance and cost of system.With the continuous improvement of system requirements and performance requirement, to high performance index, miniaturization, Low phase noise
The demand of Ka frequency range low-converters also increasingly increases.
Using packaging existing Ka frequency ranges low-converter more, with modular mode by multiple functional modules level
Connection, exists and mutually make an uproar poor, and uniformity is bad, and the relatively large problem of volume.
Utility model content
Technology solve problem of the present utility model：Overcome the deficiencies in the prior art, there is provided a kind of Ka frequency ranges low-converter, solve
Low phase noise, the problem of the comprehensive integration of channel frequency that existing Ka frequency ranges low-converter of having determined is present.
In order to solve the above-mentioned technical problem, the utility model discloses a kind of Ka frequency ranges low-converter, including：First low noise
Put, the second LNA, the first wave filter, the second wave filter, modulator, combiner, harmonic mixer and frequency synthesizer；
First LNA and the second LNA receive the first signal and secondary signal respectively, and treatment is amplified to signal,
Output first is amplified signal and second and amplifies signal；Wherein, first signal and secondary signal are Ka frequency band signals；
The input of the first wave filter is connected with the output end of the first LNA, and receive the output of the first LNA first is put
Big signal, treatment is filtered to the first amplification signal, exports the first filtering signal；
The input of the second wave filter is connected with the output end of the second LNA, and receive the output of the second LNA second is put
Big signal, treatment is filtered to the second amplification signal, exports the second filtering signal；
The input of modulator is connected with the output end of the second wave filter, receives the second filtering letter of the second wave filter output
Number, treatment is modulated to second filtering signal, export the first modulated signal；
The input of combiner is connected with the output end of the first wave filter and the output end of modulator respectively, receives first
First filtering signal of wave filter output, and, receive the first modulated signal of modulator output；To the first filtering signal and
One modulated signal is combined treatment, exports combining signal；
The input of harmonic mixer is connected with the output end of combiner and the output end of frequency synthesizer respectively, receives
The combining signal of combiner output, and, the local oscillation signal of receives frequency synthesizer output；According to the local oscillation signal, will close
Road signal is converted to the intermediate-freuqncy signal output of S frequency ranges.
In above-mentioned Ka frequency ranges low-converter, the frequency synthesizer, including：Phase discriminator, amplifier, VCO, shunt and point
Frequency device；
Phase discriminator receives the feedback signal of reference signal and the frequency divider output of outside input, according to reference signal and feedback
Signal, obtains differential signal output；And, export lock indication signal；
The input of amplifier is connected with the output end of phase discriminator, the differential signal of phase discriminator output is received, to differential signal
Enhanced processing is filtered, voltage control signal is exported；
Being connected with the output end of amplifier for the input of VCO, receives the voltage control signal of amplifier output, and voltage control signal is carried out
Oscillation treatment, exports radiofrequency signal；
The input of shunt is connected with the output end of VCO, receives the radiofrequency signal of VCO outputs, and radiofrequency signal is carried out
Branch process, obtains the first branch radiofrequency signal and the second branch radiofrequency signal；Wherein, the first branch radiofrequency signal is used as local oscillator
Signal output is to harmonic mixer；Second branch radiofrequency signal is exported to frequency divider；
The input of frequency divider is connected with one of output end of shunt, and the second branch of received branch unit output is penetrated
Frequency signal, scaling down processing, output feedback signal are carried out to the second branch radiofrequency signal；
The output end of frequency divider is connected with the input of phase discriminator, by the feedback signal back that scaling down processing is obtained export to
Phase discriminator.
In above-mentioned Ka frequency ranges low-converter, the Ka frequency ranges low-converter also includes：Housing, substrate, cover plate and multiple
Carrier；
Substrate is welded on housing；
Include multiple grooves on substrate, multiple carriers are separately positioned in corresponding groove, are welded with groove；
First LNA, the second LNA, modulator, harmonic mixer, phase discriminator, amplifier, VCO and frequency divider set respectively
Put on corresponding carrier, conductive adhesive is passed through with carrier；
First wave filter, the second wave filter, shunt and combiner are separately positioned on substrate, are welded with substrate；
First LNA, the second LNA, the first wave filter, the second wave filter, modulator, combiner, harmonic mixer
And frequency synthesizer between, and, between phase discriminator, amplifier, VCO, shunt and frequency divider, by way of gold wire bonding
Connection；
Cover plate is arranged on housing top, is hermetically connected with the shell using Laser seal welding mode.
In above-mentioned Ka frequency ranges low-converter, housing is the gold-plated housing of aluminum；Cover plate is aluminum cover plate.
In above-mentioned Ka frequency ranges low-converter, the first LNA, the second LNA, modulator, harmonic mixer, phase demodulation
Device, amplifier, VCO and frequency divider are bare chip.
The utility model has advantages below：
(1) Ka frequency ranges low-converter described in the utility model, is designed by bare chip and combines MIC microwave assembly technology realities
Existing, LNA, wave filter, modulator, combiner, harmonic mixer, frequency synthesizer etc. can be integrated in same module,
The flexibility of tracking system configuration is improve, low phase noise, the compact radio frequency channel of integration is realized.
(2) in the utility model, the local oscillation signal that harmonic mixer is exported according to frequency synthesizer turns combining signal
The intermediate-freuqncy signal output of S frequency ranges is changed to, using harmonic mixing pattern, while using the phase discriminator of low noise, with exclusive frequency
Rate synthetic schemes, is laid out simple and reliable, and phase noise is excellent, and phase noise can reach≤- 80dBc/Hz@10kHz ,≤-
90dBc/Hz@100kHz。
(3) housing and cover plate use aluminum alloy materials, Laser seal welding technology are used between housing and cover plate, with preferable
Air-tightness.
(4) in practical application, Ka frequency ranges low-converter described in the utility model can be applied into tracking system, greatly
Big sensing capture and the tracking accuracy that improve tracking system, while reducing the volume and weight of tracking system.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Ka frequency ranges low-converter in the utility model embodiment；
Fig. 2 is a kind of structural representation of frequency synthesizer in the utility model embodiment；
Fig. 3 is a kind of assembling schematic diagram of Ka frequency ranges low-converter in the utility model embodiment；
Fig. 4 is between the deviation frequency and phase noise of a kind of Ka frequency ranges low-converter described in the utility model embodiment
Relation schematic diagram.
Specific embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
The public implementation method of type is described in further detail.
Reference picture 1, shows a kind of structural representation of Ka frequency ranges low-converter in the utility model embodiment.In this reality
In applying example, the Ka frequency ranges low-converter, including：First LNA 1, the second LNA 2, the first wave filter 3, the second wave filter
4th, modulator 5, combiner 6, harmonic mixer 7 and frequency synthesizer 8.
As shown in figure 1, the first LNA 1 and the second LNA 2 receive first signal and the second letter of outside input respectively
Number, treatment is amplified to signal, output first is amplified signal and second and amplifies signal.Wherein, first signal and second
Signal can be Ka frequency band signals.
In the present embodiment, by LNA treatment after signal there is the low characteristic of noise coefficient, can greatly improve with
The signal to noise ratio of track system, improves tracking accuracy.
The input of the first wave filter 3 is connected with the output end of the first LNA 1, receives the of the output of the first LNA 1
One amplifies signal, and treatment is filtered to the first amplification signal, exports the first filtering signal.
The input of the second wave filter 4 is connected with the output end of the second LNA 2, receives the of the output of the second LNA 2
Two amplify signal, and treatment is filtered to the second amplification signal, export the second filtering signal.
In the present embodiment, signal is filtered by wave filter, filtering interference signals, and then avoids interference signal
Equipment is caused to damage, equipment performance is influenceed.
The input of modulator 5 is connected with the output end of the second wave filter 4, receives the second filter of the output of the second wave filter 4
Ripple signal, treatment is modulated to second filtering signal, exports the first modulated signal.
In the present embodiment, the frequency spectrum for realizing two paths of signals by modulator 5 is separated, with phase modulation precision high, undershoot
The characteristics of damage.
The input of combiner 6 is connected with the output end of the first wave filter 3 and the output end of modulator 5 respectively, receives
First filtering signal of the output of the first wave filter 3, and, receive the first modulated signal of the output of modulator 5；To the first filtering letter
Number and the first modulated signal be combined treatment, export combining signal.
The input of harmonic mixer 7 is connected with the output end of combiner 6 and the output end of frequency synthesizer 8 respectively,
The combining signal of the output of combiner 6 is received, and, the local oscillation signal of the output of receives frequency synthesizer 8；Believed according to the local oscillator
Number, combining signal is converted to the intermediate-freuqncy signal output of S frequency ranges.
In the present embodiment, harmonic mixer 7 can use harmonic mixing technology by the combining signal down coversion of Ka frequency ranges
Intermediate-freuqncy signal to S frequency ranges is exported.Wherein, the output end of harmonic mixer 7 can be exported with frequency conversion is needed according to the actual requirements
The input port of the equipment of signal is attached afterwards, and the present embodiment is not restricted to this.
In a preferred embodiment of the present utility model, reference picture 2 shows a kind of frequency in the utility model embodiment
The structural representation of synthesizer.Preferably, frequency synthesizer 8 can specifically include：Phase discriminator 801, amplifier 802, VCO803
(Volt Control Oscillator, voltage controlled oscillator), shunt 804 and frequency divider 805.
In the present embodiment, frequency synthesizer 8 puts number to control frequency dividing ratio using parallel, and number is put without outside, it is to avoid
Ray wipes ram in slice (Random Access Memory, random access memory) and causes component failure.Additionally, phase discriminator
801 is the phase demodulation chip of low noise, and the phase demodulation of phase discriminator 801 is entered after frequency signal frequency split, realizes Low phase noise design.
As shown in Fig. 2 phase discriminator 801 receives the feedback signal of reference signal and frequency divider 805 output of outside input, root
According to reference signal and feedback signal, differential signal output is obtained；And, export lock indication signal.Wherein, lock indication signal
Can serve to indicate that the working condition of phase discriminator 801, the work that other equipment can be according to lock indication signal to phase discriminator 801
State is monitored.
The input of amplifier 802 is connected with the output end of phase discriminator 801, receives the differential signal of the output of phase discriminator 801, right
Differential signal is filtered enhanced processing, exports voltage control signal.
Being connected with the output end of amplifier 802 for the input of VCO803, receives the voltage control signal of the output of amplifier 802, to pressure
Control signal carries out oscillation treatment, exports radiofrequency signal.
The input of shunt 804 is connected with the output end of VCO803, the radiofrequency signal of VCO803 outputs is received, to radio frequency
Signal carries out branch process, obtains the first branch radiofrequency signal and the second branch radiofrequency signal.Wherein, the first branch radiofrequency signal
Exported to harmonic mixer 7 as local oscillation signal；Second branch radiofrequency signal is exported to frequency divider 805.
The input of frequency divider 805 is connected with one of output end of shunt 804, the output of received branch unit 804
Second branch radiofrequency signal, scaling down processing, output feedback signal are carried out to the second branch radiofrequency signal.The output of frequency divider 805
End is connected with the input of phase discriminator 801, and the feedback signal back that scaling down processing is obtained is exported to phase discriminator 801.
In a preferred embodiment of the present utility model, reference picture 3, a kind of Ka is frequently in showing the utility model embodiment
The assembling schematic diagram of section low-converter.Preferably, the Ka frequency ranges low-converter can also include：Housing 9, substrate 10, cover plate
11 and multiple carriers.
As shown in figure 3, substrate 10 is welded on housing 9.
Include multiple grooves on substrate 10, multiple carriers are separately positioned in corresponding groove, are welded with groove.For example,
A carrier (first vector 12) and a groove (the first groove 13) are shown in which in Fig. 3, first vector 12 is arranged on
In one groove 13, it is welded to connect with the first groove 13.
First LNA 1, the second LNA 2, modulator 5, harmonic mixer 7, phase discriminator 801, amplifier 802, VCO803
It is separately positioned on corresponding carrier with frequency divider 805, is welded with carrier.In the present embodiment, the first LNA 1, second is low
Make an uproar and put 2, modulator 5, harmonic mixer 7, phase discriminator 801, amplifier 802, VCO803 and frequency divider 805 and be bare chip, such as Fig. 3
In be shown in which a bare chip：First bare chip 14.Wherein, first bare chip 14 can be the first LNA 1,
It is any one in two LNAs 2, modulator 5, harmonic mixer 7, phase discriminator 801, amplifier 802, VCO803 and frequency divider 805
It is individual.First bare chip 14 is arranged in first vector 12, is welded with first vector 12.
In the present embodiment, when being assembled to bare chip, MIC (Microwave Intergrated can be based on
Circuit, microwave integrated circuit) microwave assembly technology realization：Using modes such as scalpels, to needing to place bare chip on substrate 10
Position, emptied (or excision) treatment, obtain corresponding groove, carrier is welded in groove, finally, use conducting resinl
Bare chip is bonded on carrier.
First wave filter 3, the second wave filter 4, shunt 804 and combiner 6 are respectively provided with the substrate 10, with substrate 10
It is integrated, is not shown one by one in Fig. 3.
First LNA 1, the second LNA 2, the first wave filter 3, the second wave filter 4, modulator 5, combiner 6, harmonic wave
Between frequency mixer 7 and frequency synthesizer 8, and, phase discriminator 801, amplifier 802, VCO803, shunt 804 and frequency divider 805 it
Between, connected by way of gold wire bonding.
Cover plate 11 is arranged on the top of housing 9, is tightly connected with housing 9 using Laser seal welding mode, realizes high reliability
Sealing.Wherein, housing 9 can with but be not limited only to be the gold-plated housing of aluminum, cover plate 11 can with but be not limited only to be aluminum cover plate.
On the basis of above-described embodiment, Ka frequency ranges low-converter described in the utility model can be realized in applying frequency
In the range of, phase noise reaches：≤ -81dBc/Hz@10kHz ,≤- 93dBc/Hz@100kHz.
The characteristics of Ka frequency ranges low-converter described in the utility model has miniaturization, disclosure satisfy that all kinds of tracking systems
Need, it is possible to flexible configuration according to actual needs.Reference picture 4, shows a kind of Ka described in the utility model embodiment frequently
Relation schematic diagram between the deviation frequency and phase noise of section low-converter.
As Fig. 4, abscissa represent deviation frequency, scope can be from 0.1kHz to 10MHz；Ordinate represents respective offsets frequently
The noise coefficient of rate, unit is dBc/Hz.The phase noise of the present embodiment can reach as seen in Figure 4：≤-81dBc/
Hz@10kHz ,≤- 93dBc/Hz@100kHz.
In sum, the Ka frequency range low-converters described in the utility model embodiment, design combination MIC micro- by bare chip
Packaging technology realizes that LNA, wave filter, modulator, combiner, harmonic mixer, frequency synthesizer etc. can be integrated in same
In one module, the flexibility of tracking system configuration is improve, realize the compact radio frequency letter of low phase noise, integration
Road.
Secondly, in the utility model embodiment, the local oscillation signal that harmonic mixer is exported according to frequency synthesizer will be closed
Road signal is converted to the intermediate-freuqncy signal output of S frequency ranges, using harmonic mixing pattern, while using the phase discriminator of low noise, using
Exclusive frequency synthesis scheme, is laid out simple and reliable, and phase noise is excellent, and phase noise can reach≤- 80dBc/Hz@10kHz,
≤-90dBc/Hz@100kHz。
Again, housing and cover plate use aluminum alloy materials, Laser seal welding technology are used between housing and cover plate, with preferable
Air-tightness.
Additionally, in practical application, Ka frequency ranges low-converter described in the utility model can be applied into tracking system,
Sensing capture and the tracking accuracy of tracking system are substantially increased, while reducing the volume and weight of tracking system.
The utility model passes through expert evaluation, and is applied in corresponding space flight model, works well.
The above, the only optimal specific embodiment of the utility model, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.
The content not being described in detail in the utility model specification belongs to the known technology of professional and technical personnel in the field.
Claims (5)
1. a kind of Ka frequency ranges low-converter, it is characterised in that including：First LNA, the second LNA, the first wave filter,
Two wave filters, modulator, combiner, harmonic mixer and frequency synthesizer；
First LNA and the second LNA receive the first signal and secondary signal respectively, and treatment is amplified to signal, output
First amplifies signal and second amplifies signal；Wherein, first signal and secondary signal are Ka frequency band signals；
The input of the first wave filter is connected with the output end of the first LNA, receives the first amplification letter of the first LNA output
Number, treatment is filtered to the first amplification signal, export the first filtering signal；
The input of the second wave filter is connected with the output end of the second LNA, receives the second amplification letter of the second LNA output
Number, treatment is filtered to the second amplification signal, export the second filtering signal；
The input of modulator is connected with the output end of the second wave filter, receives the second filtering signal of the second wave filter output,
Treatment is modulated to second filtering signal, the first modulated signal is exported；
The input of combiner is connected with the output end of the first wave filter and the output end of modulator respectively, receives first and filters
First filtering signal of device output, and, receive the first modulated signal of modulator output；First filtering signal and first are adjusted
Signal processed is combined treatment, exports combining signal；
The input of harmonic mixer is connected with the output end of combiner and the output end of frequency synthesizer respectively, receives combining
The combining signal of device output, and, the local oscillation signal of receives frequency synthesizer output；According to the local oscillation signal, combining is believed
Number be converted to the intermediate-freuqncy signal output of S frequency ranges.
2. Ka frequency ranges low-converter according to claim 1, it is characterised in that the frequency synthesizer, including：Phase demodulation
Device, amplifier, VCO, shunt and frequency divider；
Phase discriminator receives the feedback signal of reference signal and the frequency divider output of outside input, according to reference signal and feedback letter
Number, obtain differential signal output；And, export lock indication signal；
The input of amplifier is connected with the output end of phase discriminator, receives the differential signal of phase discriminator output, and differential signal is carried out
Filter amplifying processing, exports voltage control signal；
Being connected with the output end of amplifier for the input of VCO, receives the voltage control signal of amplifier output, and voltage control signal is vibrated
Treatment, exports radiofrequency signal；
The input of shunt is connected with the output end of VCO, receives the radiofrequency signal of VCO outputs, and branch is carried out to radiofrequency signal
Treatment, obtains the first branch radiofrequency signal and the second branch radiofrequency signal；Wherein, the first branch radiofrequency signal is used as local oscillation signal
Export to harmonic mixer；Second branch radiofrequency signal is exported to frequency divider；
The input of frequency divider is connected with one of output end of shunt, the second branch radio frequency letter of received branch unit output
Number, scaling down processing, output feedback signal are carried out to the second branch radiofrequency signal；
The output end of frequency divider is connected with the input of phase discriminator, and the feedback signal back that scaling down processing is obtained is exported to phase demodulation
Device.
3. Ka frequency ranges low-converter according to claim 2, it is characterised in that also include：Housing, substrate, cover plate and many
Individual carrier；
Substrate is welded on housing；
Include multiple grooves on substrate, multiple carriers are separately positioned in corresponding groove, are welded with groove；
First LNA, the second LNA, modulator, harmonic mixer, phase discriminator, amplifier, VCO and frequency divider are separately positioned on
On corresponding carrier, conductive adhesive is passed through with carrier；
First wave filter, the second wave filter, shunt and combiner are separately positioned on substrate, are welded with substrate；
First LNA, the second LNA, the first wave filter, the second wave filter, modulator, combiner, harmonic mixer and frequency
Between rate synthesizer, and, between phase discriminator, amplifier, VCO, shunt and frequency divider, connected by way of gold wire bonding
Connect；
Cover plate is arranged on housing top, is hermetically connected with the shell using Laser seal welding mode.
4. Ka frequency ranges low-converter according to claim 3, it is characterised in that
Housing is the gold-plated housing of aluminum；
Cover plate is aluminum cover plate.
5. Ka frequency range low-converters according to Claims 2 or 3, it is characterised in that
First LNA, the second LNA, modulator, harmonic mixer, phase discriminator, amplifier, VCO and frequency divider are naked core
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621422221.9U CN206313757U (en) | 2016-12-23 | 2016-12-23 | A kind of Ka frequency ranges low-converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621422221.9U CN206313757U (en) | 2016-12-23 | 2016-12-23 | A kind of Ka frequency ranges low-converter |
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| Publication Number | Publication Date |
|---|---|
| CN206313757U true CN206313757U (en) | 2017-07-07 |
Family
ID=59245730
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| CN201621422221.9U Active CN206313757U (en) | 2016-12-23 | 2016-12-23 | A kind of Ka frequency ranges low-converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361388A (en) * | 2018-11-14 | 2019-02-19 | 成都嘉纳海威科技有限责任公司 | A kind of miniaturization high-air-tightness frequency source and its packaging method |
| CN112702020A (en) * | 2020-12-28 | 2021-04-23 | 中国航天科工集团八五一一研究所 | Miniaturized multichannel frequency conversion component for enemy and my people |
-
2016
- 2016-12-23 CN CN201621422221.9U patent/CN206313757U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361388A (en) * | 2018-11-14 | 2019-02-19 | 成都嘉纳海威科技有限责任公司 | A kind of miniaturization high-air-tightness frequency source and its packaging method |
| CN109361388B (en) * | 2018-11-14 | 2023-09-01 | 成都嘉纳海威科技有限责任公司 | Miniaturized high-air-tightness frequency source and packaging method thereof |
| CN112702020A (en) * | 2020-12-28 | 2021-04-23 | 中国航天科工集团八五一一研究所 | Miniaturized multichannel frequency conversion component for enemy and my people |
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