CN105635010B - The direct modulator of Ka frequency range millimeter wave harmonic waves - Google Patents
The direct modulator of Ka frequency range millimeter wave harmonic waves Download PDFInfo
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- CN105635010B CN105635010B CN201610019297.5A CN201610019297A CN105635010B CN 105635010 B CN105635010 B CN 105635010B CN 201610019297 A CN201610019297 A CN 201610019297A CN 105635010 B CN105635010 B CN 105635010B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/04—Modulator circuits; Transmitter circuits
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Abstract
A kind of direct modulator of Ka frequency ranges millimeter wave harmonic wave proposed by the present invention, it is desirable to provide a kind of high carrier wave inhibits, working band is wide, stability is good, can be suitable for millimeter wave height and hasten the direct modulator in broadband passed, the technical scheme is that：I, Q two-way baseband signal passes through baseband signal I input terminals respectively and baseband signal Q input terminals are fed into two identical multipliers, microwave signal is divided into two-way by microwave power distributor (23) with phase work(, passed through after 45 ° of phase shifter phase shift by the first work(of power splitter point end all the way, it is fed into first harmonic multiplier, another way is directly fed into second harmonic multiplier by the second work(of power splitter point end；I, Q two-way baseband signal passes through the first low-pass filter with baseband signal I input terminals and the second low-pass filter with baseband signal Q input terminals respectively, second harmonic respectively with carrier signal in two multipliers is multiplied, and modulated signal is exported after millimeter wave power splitter is with mutually addition.
Description
Technical field
The present invention relates to a kind of communications fields being mainly used in various platforms, are directly modulated for Ka frequency range millimeter waves
Modulator.
Background technology
With the arrival of information age, demand of the people to multimedia broadband services is increasingly incremental, and pair with current frequency spectrum
For the wireless communication system of resource anxiety, current variation is not adapted to, therefore must just develop the money of higher frequency
Source is developed to higher capacity and transmission rate, therefore millimeter wave frequency band resource becomes the first choice of Future broadband communication.With work
With it is wide, it can be achieved that big data, the data transmission feature of high speed the direct modulator of millimeter wave, just meet this demand.
The direct modulator of millimeter wave being presently available in Ka frequency ranges miniaturization satellite communication equipment, due to millimeter wave frequency band
Reactance modulation system has that carrier leak, I/Q channel imbalances cause modulation accuracy to decline.The direct modulator of millimeter wave
Using the IQ multipliers based on fundamental wave, the 0/ π modulators based on phase switcher.Wherein, the IQ multipliers based on fundamental wave are in Ka frequencies
Section causes the carrier leak of fundamental wave IQ multipliers relatively high since frequency range increases, wavelength shortens, circuit fabrication required precision is high,
The demand of engineer application is cannot be satisfied, and the 0/ π modulators based on phase switcher can only realize the modulation system of BPSK, frequency band
Utilization rate is relatively low, is not suitable for big data high-speed transfer.
Invention content
The purpose of the present invention is place in view of the deficiency of the prior art, provide it is a kind of it is simple in structure, at low cost,
High carrier wave inhibits, carrier frequency is low, working band is wide, stability is good, and the broadband passed that can hasten suitable for millimeter wave height is direct
Modulator.
It is operated in the circuit structure that millimeter wave band is directly modulated, with high carrier wave inhibits, working band is wide, is easily achieved
The advantages of.
The above-mentioned purpose of the present invention can realize that a kind of Ka frequency ranges millimeter wave harmonic wave is directly modulated by following measures
Device, including, two-way circuit theory is identical, both ends be separately connected millimeter wave power splitter and microwave power distributor harmonic wave multiplier 24,
25) it, is characterized in that：In two-way harmonic wave multiplier, radio frequency band filter, anti-paralleled diode to, carrier wave match circuit and
Phase shifter is in sequential series, and is parallel with baseband signal I input terminals between radio frequency band filter and carrier wave match circuit
Low-pass filter and harmonic wave recovery circuit, and radio frequency earthed circuit in parallel between carrier wave match circuit and phase shifter；
I, Q two-way baseband signal passes through baseband signal I input terminals 9 respectively) and baseband signal Q input terminals 10) it is fed into two complete phases
With multiplier 24,25), carrier signal passes through microwave power distributor 23) be divided into two-way with phase work(, pass through the first work(of power splitter all the way
20) point end passes through phase shifter 19) after 45 ° of phase shift, it is fed into first harmonic multiplier 24), another way passes through the second work(of power splitter
End is divided 21) to be directly fed into second harmonic multiplier 25)；I, Q two-way baseband signal is respectively by carrying baseband signal I input terminals
9 the first low-pass filter 7) and carry baseband signal Q input terminals 10) the second low-pass filter 8), in two multipliers
Be multiplied respectively with the second harmonic of carrier signal, by millimeter wave power splitter 4) with mutually be added after export modulated signal.
The present invention has the advantages that compared with the prior art：
Baseband signal of the present invention passes through 9,10) is fed into two identical harmonic wave multipliers 4 respectively) 25).Carrier wave is believed
Number pass through power splitter 23) it is divided into two-way with phase work(, 45 ° of phase shift all the way is fed into first harmonic multiplier 24), another way is directly presented
Enter to second harmonic multiplier 25).I, Q two-way baseband signal in two multipliers respectively with the second harmonic phase of carrier signal
Multiply, by millimeter wave power splitter 4) with mutually be added after export modulated signal.
The present invention reduces the work of carrier signal by the way of the harmonic modulation of baseband signal and carrier signal
Frequency, to make carrier signal more be also easy to produce.The carrier frequency of existing its modulation output signal of modulation technique is exactly incoming carrier
Frequency, and the carrier wave of modulation output signal of the present invention is the second harmonic of input carrier signal.Greatly reduce carrier signal
The difficulty of realization, especially in the higher frequency range of frequency, benefit is more obvious.
The direct modulator of Ka frequency range millimeter wave harmonic waves of the present invention, using anti-paralleled diode to realizing harmonic wave multiplication fortune
It calculates, anti-paralleled diode has the characteristics that even composite wave without output, so subharmonic, that is, virtual carrier of carrier component to technology
It is suppressed in diode pair, substantially without output, the degree of suppression of virtual carrier is protected by the consistency of two mlultiplying circuits 24,25
Card, reduces the requirement to carrier signal input power by carrier wave match circuit, reduces the power requirement of carrier signal, from
And virtual carrier is reduced in the leakage power for modulating output end.
The present invention introduces carrier wave match circuit 17,18 in two-way multiplier, reduces the requirement to carrier wave input power
The leakage power exported in modulation with virtual carrier.Multiplier introduces harmonic wave recovery circuit 11,12, by the higher hamonic wave of carrier signal
Component is recycled, and is improved the modulation efficiency of multiplier (24,25), is used harmonic wave recovery technology, by carrier signal
Higher harmonic components be recycled, improve the modulation efficiency of modulator.Breach the direct modulation technique of millimeter wave
Bottleneck.
The harmonic wave multiplier of modulator of the present invention introduces first carrier signal ground circuit, 11 second carrier signals ground connection electricity
12 harmonic wave recovery circuit of road, the higher harmonic components of carrier signal are recycled, and improve multiplier (24) (25)
Modulation efficiency：
Modulator of the present invention realizes signal modulation using harmonic wave multiplier 24,25, baseband signal and carrier signal it is secondary
Harmonic wave is multiplied, and reduces the working frequency of carrier signal, and carrier signal generation is made to be easier.
The present invention is applicable in the Different Modulations such as BPSK, QPSK, 8PSK, can apply logical with the direct modulation /demodulation of millimeter wave
Letter system can support communication system data big data, the data transmission of high-speed.
Description of the drawings
Fig. 1 is the schematic block circuit diagram of the direct modulator of Ka frequency ranges millimeter wave harmonic wave of the present invention.
In figure：1 millimeter wave power splitter common end and modulation output port, 2 the first work(of millimeter wave power splitter point end, 3 millimeters
The second work(of wave power splitter point end, 4 millimeter wave power splitters, 5 first radio frequency band filters, 6 second radio frequency band filters, 7 the
One low-pass filter, 8 second low-pass filters, 9 baseband signal I input terminals, 10 baseband signal Q input terminals, 11 first carriers letter
Number earthed circuit, 12 second carrier signal earthed circuits, 13 first anti-paralleled diodes pair, 14 second anti-paralleled diodes pair,
15 first radio frequency earthed circuits, 16 second radio frequency earthed circuits, 17 first carrier match circuits, 18 second carrier wave match circuits,
19 phase shifters, 20 the first work(of microwave power distributor point end, 21 the second work(of microwave power distributor point end, 22 carrier signal input terminals, 23 is micro-
Wave power splitter, 24 first harmonic multipliers, 25 second harmonic multipliers.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
In Fig. 1, the direct modulator of Ka frequency ranges millimeter wave harmonic wave includes mainly：24 He of millimeter wave first harmonic multiplier
Second harmonic multiplier 25, millimeter wave power splitter 4, microwave power distributor 23, phase shifter 19.It is mainly identical by two-way circuit theory,
Both ends are separately connected millimeter wave power splitter and the harmonic wave multiplier 24,25 of microwave power distributor forms.Two-way harmonic wave multiplier 24,
In 25, the first radio frequency ground connection electricity is parallel between the first anti-paralleled diode pair 13 and first carrier match circuit 17 of the first via
Road 15 is parallel with the second radio frequency ground connection electricity between second anti-paralleled diode pair 14 on the second tunnel and 8 second carrier wave match circuits
Road 16, wherein the second anti-paralleled diode pair 14, the first radio frequency earthed circuit 15 and the second radio frequency earthed circuit 16 are that modulation is defeated
Go out signal and earth-return is provided, while carrier signal is realized and is opened a way, is transferred to the first inverse parallel with ensureing carrier signal low-loss
Diode pair 13 and the second anti-paralleled diode pair 14.First radio frequency band filter 5 of the first via and the second of the second tunnel are penetrated
Band-pass filter 6 realizes the energy leakage for inhibiting baseband signal in rf inputs；The first low-pass filter of the first via 7 and
Second low-pass filter 8 on two tunnels realizes the energy leakage for inhibiting modulated signal in baseband signal input terminal.Two-way modulated signal
Add operation is completed by the second work(point end 3 of the first work(of the millimeter wave power splitter first via point end 2 and the first via respectively, finally
Final modulated signal is exported in millimeter wave power splitter common end and modulation output port 1.
The microwave signal input terminal of modulator is equipped with the power for reducing and being inputted to carrier wave and is modulating it with reduction carrier signal
The carrier wave impedance matching circuit 17,18 of the Power leakage of output end.It is radio frequency band filter, anti-in two-way harmonic wave multiplier
Parallel diode is in sequential series to, carrier wave match circuit, phase shifter, and between radio frequency band filter and carrier wave match circuit
It is parallel with low-pass filter and harmonic wave recovery circuit with baseband signal I input terminals, and in carrier wave match circuit and phase shift
Radio frequency earthed circuit in parallel between device；I, Q two-way baseband signal passes through baseband signal I input terminals 9 respectively and baseband signal Q is defeated
Entering end 10 and is fed into two identical multipliers 24,25, microwave signal is divided into two-way by microwave power distributor 23 with phase work(,
All the way by 20 feed-in phase shifters 19 of the first work(of microwave power distributor point end, after 45 ° of phase shift, then it is fed into first harmonic multiplier
24, another way is directly fed into second harmonic multiplier 25 by the second power splitter work(point end 21；I, Q two-way baseband signal is distinguished
Pass through the first low-pass filter 7 with baseband signal I input terminals 9 and the second low pass filtered with baseband signal Q input terminals 10
Wave device 8, the second harmonic respectively with carrier signal in two multipliers are multiplied, by millimeter power splitter 4 with defeated after being mutually added
Go out modulated signal.
I, Q two-way modulated signal passes through the first work(of millimeter wave power splitter point end 2, the second work(of millimeter wave power splitter point end respectively
3 ports are fed into millimeter wave power splitter 4, and millimeter wave power splitter common end is output to after the addition of same phase and modulates defeated port 1.
Baseband signal I and Q is presented respectively by the baseband signal I input terminals 9 and baseband signal Q input terminals 10 of Baseband input
Enter to two first harmonic multipliers 24 and second harmonic multiplier 25, carrier signal is due to carrier signal input terminal 22, feed-in
To microwave power distributor 23, work(is divided into signal of the two-way constant amplitude with phase, inputs the first work(of microwave power distributor point end 20 all the way by moving
Phase device 19 is fed into multiplier 24 after realizing 45 ° of phase shift.Another way input the second work(of microwave power distributor point end 21 is directly fed into
Multiplier 25.Two road carrier signals are fed into first by first carrier match circuit 17 and the second carrier wave match circuit 18 respectively
Anti-paralleled diode pair 13 and the second anti-paralleled diode pair 14, modulator are non-linear by anti-paralleled diode pair 13,14
Realize multiplying, the even combination component that multiplying generates recycles inside diode pair, externally without output, reduces modulation
Leakage of the device carrier signal in output end.Since diode impedance is not 50 Ω, using first carrier match circuit 17 and
Nd carrier match circuit 18 makes diode impedance in carrier wave input pole and 50 Ω Impedance Matching on Transmission Line, reduces carrier signal and exist
Diode carrier wave inputs the reflection of pole, reduces the input power of carrier signal.The utilization of two-way harmonic wave multiplier 24,25 first is anti-simultaneously
Join non-linear, the first anti-paralleled diode pair 13 and the second inverse parallel two of diode pair 13 and the second anti-paralleled diode pair 14
Pole pipe pair 14 generates abundant harmonic component, and the second harmonic and baseband signal for extracting carrier signal carry out multiplying.First
First carrier signal ground circuit and high-order harmonic wave component recovery circuit in carrier signal earthed circuit 11 and the second carrier wave
The recovery circuit of high-order harmonic wave component in signal ground circuit provides earth-return for carrier circuit, while three ranks of carrier wave are humorous
Wave component is reflected back diode pair, it is made to participate in multiplying again.
Claims (10)
1. a kind of direct modulator of Ka frequency ranges millimeter wave harmonic wave, including, two-way circuit theory is identical, and both ends are separately connected millimeter wave
The harmonic wave multiplier of power splitter and microwave power distributor（24,25）, it is characterized in that：In two-way harmonic wave multiplier, the filter of radio frequency band logical
Wave device, anti-paralleled diode are in sequential series to, carrier wave match circuit and phase shifter, and are matched with carrier wave in radio frequency band filter
It is parallel with low-pass filter and harmonic wave recovery circuit with baseband signal I input terminals between circuit, and electricity is matched in carrier wave
Radio frequency earthed circuit in parallel between road and phase shifter；I, Q two-way baseband signal passes through baseband signal I input terminals respectively（9）With
Baseband signal Q input terminals（10）It is fed into two identical harmonic wave multipliers（24,25）, carrier signal passes through microwave work(point
Device（23）It is divided into two-way with phase work(, passes through the first work(of power splitter point end all the way（20）Feed-in phase shifter（19）, after 45 ° of phase shift, then
It is fed into first harmonic multiplier（24）；Another way passes through the second work(of power splitter point end（21）It is directly fed into second harmonic multiplication
Device（25）；I, Q two-way baseband signal is respectively by carrying baseband signal I input terminals（9）The first low-pass filter（7）With with
Baseband signal Q input terminals（10）The second low-pass filter（8）, in two multipliers respectively with the second harmonic of carrier signal
It is multiplied, by power splitter（4）Modulated signal is exported after being added with phase.
2. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as described in claim 1, it is characterised in that：I, Q two-way modulated signal
Pass through the first work(of millimeter wave power splitter point end respectively（2）, the second work(of millimeter wave power splitter point end（3）Port is fed into millimeter wave work(
Divide device（4）, it is output to millimeter wave power splitter common end after the addition of same phase and modulates defeated port（1）.
3. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as described in claim 1, it is characterised in that：In two-way harmonic wave multiplier
（24,25）In, the first anti-paralleled diode pair of the first via（13）With first carrier match circuit（17）Between be parallel with first
Radio frequency earthed circuit（15）, second anti-paralleled diode pair on the second tunnel（14）With the second carrier wave match circuit（8）Between it is in parallel
There is the second radio frequency earthed circuit（16）, wherein the second anti-paralleled diode pair（14）, the first radio frequency earthed circuit（15）With second
Radio frequency earthed circuit（16）Earth-return is provided for modulation output signal, while carrier signal is realized and is opened a way, ensures carrier signal
Low-loss it is transferred to the first anti-paralleled diode pair（13）With the second anti-paralleled diode pair（14）.
4. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as described in claim 1, it is characterised in that：First radio frequency of the first via
Bandpass filter（5）With second radio frequency band filter on the second tunnel（6）Realize the energy for inhibiting baseband signal in rf inputs
Amount leakage；The first low-pass filter of the first via（7）With second low-pass filter on the second tunnel（8）It realizes and inhibits modulated signal in base
The energy leakage of band signal input terminal.
5. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as described in claim 1, it is characterised in that：The microwave signal of modulator
Input terminal, which is equipped with, to be reduced the power inputted to carrier wave and reduces carrier wave of the carrier signal in the Power leakage for modulating its output end
With circuit（17,18）.
6. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as described in claim 1, it is characterised in that：Two road carrier signals are distinguished
Pass through first carrier match circuit（17）With the second carrier wave match circuit（18）It is fed into the first anti-paralleled diode pair（13）With
Second anti-paralleled diode pair（14）.
7. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as claimed in claim 3, it is characterised in that：Modulator passes through inverse parallel
Diode pair（13,14）Non-linear realization multiplying, multiplying generate even combine component inside diode pair
Cycle reduces leakage of the modulator carrier signal in output end externally without output.
8. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as claimed in claim 3, it is characterised in that：First carrier match circuit
（17）With the second carrier wave match circuit（18）, make diode impedance in carrier wave input pole and 50 Ω Impedance Matching on Transmission Line, reduce
Carrier signal inputs the reflection of pole in diode carrier wave, reduces the input power of carrier signal.
9. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as claimed in claim 4, it is characterised in that：Two-way harmonic wave multiplier
(24,25) the first anti-paralleled diode pair is utilized（13）With the second anti-paralleled diode pair（14）Non-linear, the first inverse parallel
Diode pair（13）With the second anti-paralleled diode pair（14）Harmonic component is generated, the second harmonic and base band of carrier signal are extracted
Signal carries out multiplying.
10. the direct modulator of Ka frequency ranges millimeter wave harmonic wave as described in claim 1, it is characterised in that：First carrier signal connects
Ground circuit and high-order harmonic wave component recovery circuit（11）And the second high-order harmonic wave component in carrier signal earthed circuit returns
Receive circuit（11）Earth-return is provided for carrier circuit, while three order harmonic components of carrier wave are reflected back diode pair, keeps its heavy
It is new to participate in multiplying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610019297.5A CN105635010B (en) | 2016-01-12 | 2016-01-12 | The direct modulator of Ka frequency range millimeter wave harmonic waves |
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| CN201610019297.5A CN105635010B (en) | 2016-01-12 | 2016-01-12 | The direct modulator of Ka frequency range millimeter wave harmonic waves |
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| CN105635010B true CN105635010B (en) | 2018-10-23 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788669A (en) * | 2016-11-14 | 2017-05-31 | 北京遥测技术研究所 | One kind miniaturization Ka frequency range Single channel modulators |
| CN109274627B (en) * | 2018-11-19 | 2021-05-11 | 上海航天测控通信研究所 | Ka frequency band QPSK direct modulation device and communication equipment |
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| WO2004064197A1 (en) * | 2003-01-08 | 2004-07-29 | Xytrans, Inc. | Low-cost wireless millimeter wave outdoor unit (odu) |
| CN102523033A (en) * | 2011-12-14 | 2012-06-27 | 大连大学 | Baseband channel simulation system of mobile satellite suitable for Ka frequency band |
| CN103956555A (en) * | 2014-05-06 | 2014-07-30 | 北京遥测技术研究所 | Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer |
| CN104201993A (en) * | 2014-09-04 | 2014-12-10 | 中国电子科技集团公司第十六研究所 | One-piece integrated Ka frequency band superconduction amplitude-limiting low-noise amplifier component |
| CN104363024A (en) * | 2014-09-19 | 2015-02-18 | 北京遥测技术研究所 | Millimeter wave multi-channel radio frequency receiving front end for Ka frequency band feed source |
-
2016
- 2016-01-12 CN CN201610019297.5A patent/CN105635010B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004064197A1 (en) * | 2003-01-08 | 2004-07-29 | Xytrans, Inc. | Low-cost wireless millimeter wave outdoor unit (odu) |
| CN102523033A (en) * | 2011-12-14 | 2012-06-27 | 大连大学 | Baseband channel simulation system of mobile satellite suitable for Ka frequency band |
| CN103956555A (en) * | 2014-05-06 | 2014-07-30 | 北京遥测技术研究所 | Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer |
| CN104201993A (en) * | 2014-09-04 | 2014-12-10 | 中国电子科技集团公司第十六研究所 | One-piece integrated Ka frequency band superconduction amplitude-limiting low-noise amplifier component |
| CN104363024A (en) * | 2014-09-19 | 2015-02-18 | 北京遥测技术研究所 | Millimeter wave multi-channel radio frequency receiving front end for Ka frequency band feed source |
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