CN102510366A - Microwave signal generating device - Google Patents
Microwave signal generating device Download PDFInfo
- Publication number
- CN102510366A CN102510366A CN2011103690698A CN201110369069A CN102510366A CN 102510366 A CN102510366 A CN 102510366A CN 2011103690698 A CN2011103690698 A CN 2011103690698A CN 201110369069 A CN201110369069 A CN 201110369069A CN 102510366 A CN102510366 A CN 102510366A
- Authority
- CN
- China
- Prior art keywords
- signal
- local oscillation
- module
- generating apparatus
- signal generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
The invention discloses a microwave signal generating device. The device comprises a baseband signal source, a local oscillation module, an up-conversion module and an analog signal generation module, wherein the baseband signal source is used for generating baseband signals; the local oscillation module is used for generating local oscillation signals; the up-conversion module is used for completing quadrature modulation process according to the baseband signals and the local oscillation signals to acquire vector signals, and comprises more than two quadrature modulators in different mutually continuous frequency bands; and the analog signal generation module is used for generating analog signals according to the local oscillation signals provided by the local oscillation module, and comprises first mixer, a second mixer, a filter and an amplifier. By adopting the technical scheme provided by the invention, vector signals and analog signals, which are in continuous multibands, are generated. Besides, the microwave signal generating device has the advantages of simple structure and low cost.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of microwave signal generating apparatus.
Background technology
When carrying out testing of equipment,, also increasingly high to the requirement of signal excitation along with the frequency and the bandwidth raising of equipment under test; Require the signal excitation device to have continuous wideband section, multiple modulating mode, the modulation signal in broadband, version and the volume to exciting bank also claims simultaneously; Not only want cube little; Require to possess modularization and the characteristics of reshuffling simultaneously, see from long-range angle, effectively the cost of lowering apparatus.
Yet, in the prior art still the no signal exciting bank can realize above-mentioned purpose, for this reason, be necessary to develop a kind of novel signal excitation device to address this problem.
Summary of the invention
The present invention provides a kind of microwave signal generating apparatus, to solve the problem that signal excitation device of the prior art does not have continuous wideband section.
The present invention provides a kind of microwave signal generating apparatus, comprising:
Base band sources is used to produce baseband signal;
The local oscillator module is used to produce local oscillation signal;
The up-conversion module is used for accomplishing the quadrature modulation process according to said baseband signal and said local oscillation signal, obtains vector signal;
Said up-conversion module comprises the quadrature modulator that is in different frequency range more than two.
Further, the digital modulation type of said baseband signal is one of following type:
AM (amplitude modulation), FM (frequency modulation), ASK (amplitude shift keying), FSK (Frequency-shift keying; Frequency shift keying), BPSK (Binary Phase Shift Keying; Biphase phase shift keying), QPSK (Quadrature Phase Shift Keying, QPSK), 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) and 64QAM.
Further, said baseband signal is IQ (quadrature up-conversion) signal of difference.
Further, the way of said local oscillation signal equals the number of said quadrature modulator, and promptly said local oscillator module provides one tunnel said local oscillation signal for each said quadrature modulator.
Further, said local oscillator module also is used for clock signal is exported to said up-conversion module, and said up-conversion module also is used for exporting said clock signal to said base band sources.
Further, the said quadrature modulator that is in different frequency range more than two, its frequency range is continuous each other.
Further, microwave signal generating apparatus of the present invention also comprises the analog signal generation module, and the local oscillation signal that this analog signal generation module is used for providing according to said local oscillator module generates analog signal.
Further, said analog signal generation module comprises first frequency mixer and filter; Wherein, the frequency that said first frequency mixer is used to receive said local oscillator module and provides is higher than the local oscillation signal of a pre-set threshold value, with independently AM signal or FM signal carry out mixing; Said filter is used for the signal of said first frequency mixer output is carried out filtering.
Again further, said analog signal generation module also comprises amplifier, and this amplifier is used for the signal of said filter output is amplified.
Again further, said analog signal generation module also comprises second frequency mixer, and the frequency that this second frequency mixer is used to receive said local oscillator module and provides is lower than the local oscillation signal of said pre-set threshold value, carries out mixing with the output signal of said amplifier.
Beneficial effect of the present invention is following:
The present invention has realized the generation of the vector signal of continuous multiband through adopting the mode of a plurality of quadrature modulator splicings; The present invention simultaneously is owing to introduced the analog signal generation module; Adopt means such as mixing, filtering, amplification to realize the generation of analog signal; Thereby can generate two kinds of signals of analog signal and vector signal, and two kinds of signals all can be the broadband signal of continuous wave section.Finally can select the output of desired signal through the mode of control switch.
Microwave signal generating apparatus of the present invention also has simple in structure, and cost is low, is easy to the characteristics of safeguarding and upgrading.
Description of drawings
Fig. 1 is the microwave signal generating apparatus structural representation of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, does not limit the present invention.
According to embodiments of the invention; A kind of microwave signal generating apparatus is provided; Fig. 1 is the structural representation of the microwave signal generating apparatus of the embodiment of the invention; As shown in Figure 1, the microwave signal generating apparatus of the embodiment of the invention comprises: base band sources, up-conversion module, local oscillator module and analog signal generation module.Below each module of the embodiment of the invention is carried out detailed explanation.
Particularly, base band sources produces various Broad-band Modulated Signal, and exports to the up-conversion module through the IQ mode, and signal bandwidth is DC～80MHz.Base band sources produces various digital modulation types, comprises modes such as AM, FM, ASK, FSK, BPSK, QPSK, 16QAM, 64QAM, and for adapting to the modern communications growth requirement, these digital modulation have the characteristics in broadband; All kinds of digital modulation signals that produced are carried on the IQ modulator (being quadrature modulator) through the IQ mode.
The up-conversion module comprises plural broadband IQ modulator, realizes the quadrature up-conversion of wideband baseband IQ signal to local oscillation signal.In the embodiment of the invention; For reaching the broadband requirement of 26.5GHz; Adopted the scheme of IQ modulator splicing, three the IQ modulators of frequency range at 100MHz～4GHz, 4GHz～18GHz and 18GHz～26.5GHz have been spliced, realized respectively that at different frequency range vector signal produces; Carry out the splicing of frequency range then through switch, finally accomplish the vector signal modulation of 1MHz～26.5GHz.The frequency range of each IQ modulator that splices in embodiments of the present invention, is continuous.
In the present embodiment, the local oscillation signal of quadrature modulation is provided by the local oscillator module, has three road local oscillation signals, and three road local oscillation signals are respectively 100MHz～4GHz, 4GHz～18GHz, and 18GHz～26.5GHz sends into the IQ modulator of three correspondences respectively.The local oscillator module is exported to the up-conversion module with clock signal simultaneously, and the up-conversion module exports clock signal to the clock port of base band sources simultaneously, guarantees the clock synchronization between base band sources, local oscillator module and these three modules of up-conversion module.Local oscillation signal gets into variable connector respectively again after the baseband signal modulation, unification is carried out ALC (Automatic Level Control, automatic electric-level control) power adjustment by detecting circuit.For reaching ALC control effect, feedback circuit control is carried out in three road vector signal sources respectively.
In the embodiment of the invention; For realizing highly purified simulation signal generator; Adopted simulation signal generator and the vector signal source circuit mode of independent design separately; The main circuit of simulation signal generator is concentrated in the analog signal generation module, accomplish conditioning, comprise links such as mixing, filtering, amplification, automatic electric-level control simulation signal generator through the analog signal generation module.
The analog signal generation module is used for the generation of simulation signal generator and filtering, and the analog signal generation module is as selecting plug-in unit for use in the embodiment of the invention, and when needs produced simulation signal generator, local oscillation signal output was through the analog signal generation module.In the time only need producing the vector signal source, local oscillation signal is without preselector, by the direct output vector signal of up-conversion module.
The analog signal generation module is accepted the local oscillation signal that is higher than a pre-set threshold value from the local oscillator module; For example pre-set threshold value is made as 2GHz; This local oscillation signal is made as 2～26.5GHz; This local oscillation signal and AM signal independently or FM signal carry out filtering through tuned filter, to reach the purpose that suppresses spuious raising spectral purity again after the first frequency mixer mixing.By amplifier filtered signal is amplified then, obtain one tunnel analog signal.Local oscillation signal less than 2GHz carries out mixing at the output signal of second frequency mixer and amplifier, obtains another road analog signal.This two-way analog signal is spliced into the analog signal of 1MHz～26.5GHz through switch.For improving the analog signal source quality, the same ALC control loop that adopts separately.In the present embodiment, pre-set threshold value also can be as required confirms arbitrarily, for example 1GHz, 3GHz, 5GHz, 8GHz, or the like.
The analog signal that the analog signal generation module generates can get into the up-conversion module, gets into switch jointly with each road vector signal, switches through switch and selects still analog signal output of vector signal output.By this method, effectively reduced the volume of device hardware.
In the embodiment of the invention; The microwave signal generating apparatus is based on PXIE (PCI Express extensions for instrument; The expansion of PCI Express in instrument field) framework, and through adopting IVI (Interchangeable Virtual Instruments, The interchangeable virtual instruments) function and driver of modules; The software of each module is carried out standardization; Make module adopt identical function just can use, except that parameter attribute, need not upgrade instrument software with same-interface relation.
The present invention has adopted FPGA (Field Programmable Gate Array in hardware designs; Field programmable gate array), DSP (Digital Signal Processing; Digital Signal Processing) programming device such as; Can with each bottom software through the bus form dynamic load in FPGA, realize various signals generation function, reach under unified hardware environment the function of reshuffling to instrument.
Although be the example purpose, the preferred embodiments of the present invention are disclosed, it also is possible those skilled in the art will recognize various improvement, increase and replacement, therefore, scope of the present invention should be not limited to the foregoing description.
Claims (10)
1. a microwave signal generating apparatus is characterized in that, comprising:
Base band sources is used to produce baseband signal;
The local oscillator module is used to produce local oscillation signal;
The up-conversion module is used for accomplishing the quadrature modulation process according to said baseband signal and said local oscillation signal, obtains vector signal;
Said up-conversion module comprises the quadrature modulator that is in different frequency range more than two.
2. microwave signal generating apparatus as claimed in claim 1 is characterized in that, the digital modulation type of said baseband signal is one of following type:
Amplitude modulation, frequency modulation, amplitude shift keying, frequency shift keying, biphase phase shift keying, QPSK, 16QAM and 64QAM.
3. microwave signal generating apparatus as claimed in claim 2 is characterized in that, said baseband signal is the quadrature up-conversion signal of difference.
4. microwave signal generating apparatus as claimed in claim 1 is characterized in that, the way of said local oscillation signal equals the number of said quadrature modulator.
5. microwave signal generating apparatus as claimed in claim 1 is characterized in that, said local oscillator module also is used for clock signal is exported to said up-conversion module, and said up-conversion module also is used for exporting said clock signal to said base band sources.
6. microwave signal generating apparatus as claimed in claim 1 is characterized in that, the said quadrature modulator that is in different frequency range more than two, and its frequency range is continuous each other.
7. like each described microwave signal generating apparatus in the claim 1 to 6, it is characterized in that, also comprise the analog signal generation module, the local oscillation signal that this analog signal generation module is used for providing according to said local oscillator module generates analog signal.
8. microwave signal generating apparatus as claimed in claim 7 is characterized in that, said analog signal generation module comprises first frequency mixer and filter; Wherein, the frequency that said first frequency mixer is used to receive said local oscillator module and provides is higher than the local oscillation signal of a pre-set threshold value, with independently amplitude-modulated signal or FM signal carry out mixing; Said filter is used for the signal of said first frequency mixer output is carried out filtering.
9. microwave signal generating apparatus as claimed in claim 8 is characterized in that, said analog signal generation module also comprises amplifier, and this amplifier is used for the signal of said filter output is amplified.
10. microwave signal generating apparatus as claimed in claim 9; It is characterized in that; Said analog signal generation module also comprises second frequency mixer; The frequency that this second frequency mixer is used to receive said local oscillator module and provides is lower than the local oscillation signal of said pre-set threshold value, carries out mixing with the output signal of said amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103690698A CN102510366A (en) | 2011-11-18 | 2011-11-18 | Microwave signal generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103690698A CN102510366A (en) | 2011-11-18 | 2011-11-18 | Microwave signal generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102510366A true CN102510366A (en) | 2012-06-20 |
Family
ID=46222420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103690698A Pending CN102510366A (en) | 2011-11-18 | 2011-11-18 | Microwave signal generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102510366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333958A (en) * | 2017-12-29 | 2018-07-27 | 北京航天测控技术有限公司 | A kind of multiplexing shape General Aviation Simulator |
| CN114244380A (en) * | 2021-12-31 | 2022-03-25 | 北京航天测控技术有限公司 | Modular microwave signal source system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003043180A1 (en) * | 2001-11-09 | 2003-05-22 | Qualcomm Incorporated | Multiple analog and digital downconversion |
| CN1716808A (en) * | 2004-06-01 | 2006-01-04 | 美国博通公司 | Nonvolatile multiple input multiple output wireless communications |
| CN2877149Y (en) * | 2006-03-21 | 2007-03-07 | 东南大学 | Low complex degree ultra-wideband radio-frequency front terminal |
| CN101349740A (en) * | 2008-07-29 | 2009-01-21 | 北京航空航天大学 | General-purpose satellite navigation signal interference source and method for generating signal thereof |
| CN101435862A (en) * | 2008-07-29 | 2009-05-20 | 北京航空航天大学 | Up converter and signal processing method thereof |
| CN201555948U (en) * | 2009-11-27 | 2010-08-18 | 中国电子科技集团公司第三十八研究所 | System for realizing generation and receiving of super bandwidth signals by subband synthesis |
| CN102244500A (en) * | 2011-05-26 | 2011-11-16 | 新邮通信设备有限公司 | Method and device for controlling power supplying voltage of power consumption device in emitting passage and emitting system |
-
2011
- 2011-11-18 CN CN2011103690698A patent/CN102510366A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003043180A1 (en) * | 2001-11-09 | 2003-05-22 | Qualcomm Incorporated | Multiple analog and digital downconversion |
| CN1716808A (en) * | 2004-06-01 | 2006-01-04 | 美国博通公司 | Nonvolatile multiple input multiple output wireless communications |
| CN2877149Y (en) * | 2006-03-21 | 2007-03-07 | 东南大学 | Low complex degree ultra-wideband radio-frequency front terminal |
| CN101349740A (en) * | 2008-07-29 | 2009-01-21 | 北京航空航天大学 | General-purpose satellite navigation signal interference source and method for generating signal thereof |
| CN101435862A (en) * | 2008-07-29 | 2009-05-20 | 北京航空航天大学 | Up converter and signal processing method thereof |
| CN201555948U (en) * | 2009-11-27 | 2010-08-18 | 中国电子科技集团公司第三十八研究所 | System for realizing generation and receiving of super bandwidth signals by subband synthesis |
| CN102244500A (en) * | 2011-05-26 | 2011-11-16 | 新邮通信设备有限公司 | Method and device for controlling power supplying voltage of power consumption device in emitting passage and emitting system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333958A (en) * | 2017-12-29 | 2018-07-27 | 北京航天测控技术有限公司 | A kind of multiplexing shape General Aviation Simulator |
| CN114244380A (en) * | 2021-12-31 | 2022-03-25 | 北京航天测控技术有限公司 | Modular microwave signal source system |
| CN114244380B (en) * | 2021-12-31 | 2023-12-01 | 北京航天测控技术有限公司 | Modularized microwave signal source system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102217191B (en) | Linear and polar dual mode transmitter circuit | |
| US9692443B2 (en) | Circuit and method | |
| CN108650013A (en) | A kind of system and method for the broad-band multipath channelizing based on optical frequency shift | |
| CN101594327A (en) | Multichannel digital predistortion processing unit and pre-distortion method | |
| WO2013117216A1 (en) | Photonic rf generator | |
| CN106685534B (en) | A kind of down coversion implementation method and device based on relevant optical detection | |
| CN104601240A (en) | System and method for generating millimeter waves based on chalcogenide glass optical fiber four-wave mixing effect | |
| KR20010071736A (en) | A method and apparatus for modulating digital data | |
| KR100841433B1 (en) | Polar transmitter apply to bpsk modulation method using distributed active transformer | |
| CN103178840A (en) | Phase-locked loop circuit and working method thereof | |
| US9054921B2 (en) | Method and apparatus for generating a plurality of modulated signals | |
| CN109450479B (en) | Signal modulation module and method | |
| CN102510366A (en) | Microwave signal generating device | |
| KR20020016838A (en) | Electronic circuit arrangement generating a transmit frequency | |
| US8594234B2 (en) | Multiple transmission apparatus with reduced coupling | |
| CN103546171B (en) | Radio-frequency signal modulation method, numeral are to radio frequency converter module and radiofrequency launcher | |
| US20090214213A1 (en) | Modulation device for generating optical signal with quadruple frequency and method thereof | |
| CN106877934A (en) | Carrier wave suppression mode light-carried wireless vector wave system based on phase factor optimization | |
| Singh et al. | Implementation of OFDM and other multicarrier modulations on SDR | |
| KR101704689B1 (en) | Modulation device of millimeter wave | |
| CN110750083B (en) | Broadband complicated style frequency agile signal generation system based on baseband frequency mixing | |
| CN1373622A (en) | Base band processor integrating more modulation functions and method for implementing different modulations | |
| CN103701754B (en) | Automatic calibration method of vector modulation signal | |
| US10763927B2 (en) | Signal generator and signal generating method | |
| JP2011527172A (en) | Digital modulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |