CN103675767A - An ultra wide band low power radiofrequency signal generator and a method thereof - Google Patents

An ultra wide band low power radiofrequency signal generator and a method thereof Download PDF

Info

Publication number
CN103675767A
CN103675767A CN201310392151.1A CN201310392151A CN103675767A CN 103675767 A CN103675767 A CN 103675767A CN 201310392151 A CN201310392151 A CN 201310392151A CN 103675767 A CN103675767 A CN 103675767A
Authority
CN
China
Prior art keywords
signal
radio frequency
baseband signal
ultra
signal generator
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.)
Granted
Application number
CN201310392151.1A
Other languages
Chinese (zh)
Other versions
CN103675767B (en
Inventor
李和平
朱建光
张建龙
贾颖新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Electronics of CAS
Original Assignee
Institute of Electronics of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institute of Electronics of CAS filed Critical Institute of Electronics of CAS
Priority to CN201310392151.1A priority Critical patent/CN103675767B/en
Publication of CN103675767A publication Critical patent/CN103675767A/en
Application granted granted Critical
Publication of CN103675767B publication Critical patent/CN103675767B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/35Details of non-pulse systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88Radar or analogous systems specially adapted for specific applications
    • G01S13/89Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G01S13/90Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

本发明公开了一种超宽带低功率射频信号发生器及其方法。所述信号发生器包括:基带信号源,其用于产生连续的基带信号;开关,其用于控制将所述基带信号从时域上分割成多个部分;正交调制器,其使用不同的射频本振将所分割成多个部分的基带信号调制成多个射频信号;合成器,其用于将所述多个射频信号在时域上合成为一路超宽带低功率射频信号。该信号发生器主要用于雷达激励器。

Figure 201310392151

The invention discloses an ultra-wideband low-power radio frequency signal generator and a method thereof. The signal generator includes: a baseband signal source, which is used to generate a continuous baseband signal; a switch, which is used to control the division of the baseband signal into multiple parts in the time domain; a quadrature modulator, which uses different The radio frequency local oscillator modulates the divided baseband signal into multiple radio frequency signals; the synthesizer is used to synthesize the multiple radio frequency signals into one ultra-wideband low-power radio frequency signal in the time domain. This signal generator is mainly used for radar exciter.

Figure 201310392151

Description

A kind of ultra broadband low-power radio frequency signal generator and method thereof
Technical field
The present invention relates to radar driver technical field, particularly a kind of synthetic-aperture radar (Synthetic Aperture Radar-SAR) ultra broadband low-power radio frequency signal generator and method thereof.
Background technology
Driver is an important component part of synthetic-aperture radar.It is used for producing the needed low-power radio frequency signal of polarization sensitive synthetic aperture radar system work.In polarization sensitive synthetic aperture radar system, range resolution is determined by the bandwidth transmitting.Along with the development of technology, the resolution of user's Technologies Against Synthetic Aperture Radar system has proposed the requirement of centimetre magnitude, brings the signal bandwidth of radar system to reach several GHz for this reason.
The development of large scale integrated circuit technology causes high-speed figure analog converter (Digital to Analog Convertor-DAC) and the fast development of Direct Digital Frequency Synthesizers (Direct Digital Frequency Synthesis-DDS) technology, but for practical application, an always poor order of magnitude in performance.To this, the generation scheme of traditional low-power radio frequency signal is frequency multiplication, and it realizes theory diagram as shown in Figure 1.First by the DAC of a high-precision high-speed, produced the intermediate-freuqncy signal of an arrowband, then, by after several times frequency multiplication, bandpass filtering and amplification, obtain the low-power radio frequency signal of required bandwidth.
Frequency multiplication scheme is the main flow scheme that produces at present ultra-wideband radar signal.It simple in structure, the signal Out-of-band rejection degree of generation is higher, and flatness in signal band is good.But its shortcoming is: volume is large, and power consumption is high; The number of times of frequency multiplication is more, introducing spuious many, the poor linearity of signal.
Summary of the invention
In order to overcome the not high enough and bulky shortcoming of frequency multiplication scheme of current DAC sampling rate, the invention provides a kind of ultra broadband low-power radio frequency signal generator.
Ultra broadband low-power radio frequency signal generator disclosed by the invention, it comprises:
Base band sources, it is for generation of continuous baseband signal;
Switch, it is divided into a plurality of parts by described baseband signal from time domain for controlling;
Quadrature modulator, it uses different radio-frequency (RF) local oscillator that the baseband signal of be divided into a plurality of parts is modulated into a plurality of radiofrequency signals;
Compositor, it for synthesizing described a plurality of radiofrequency signals one road ultra broadband low-power radio frequency signal in time domain.
Wherein, this signal generator is for radar driver.
Wherein, it obtains ultra broadband low-power radio frequency signal by time domain multi channel signals synthetic method.
Wherein, described base band sources adopts waveform synthetic method to produce baseband signal.
Wherein, described baseband signal is formed by connecting by the linear FM signal of a plurality of identical characteristics.
Wherein, described a plurality of radiofrequency signal is the radiofrequency signal with different center frequency same band.
What wherein, described base band sources produced is I and the Q signal of two-way quadrature.
The invention also discloses a kind of ultra broadband low-power radio frequency signal production method, it comprises:
Step 1, base band sources produce baseband signal;
Step 2, described baseband signal is divided into a plurality of parts from time domain, forms a plurality of zero intermediate frequency linear FM signals;
Step 3, use different radio-frequency (RF) local oscillator that described a plurality of zero intermediate frequency linear FM signals are carried out to orthogonal modulation, form a plurality of radiofrequency signals;
Step 4, described a plurality of radiofrequency signals are synthesized to a ultra broadband low-power radio frequency signal.
Wherein, by time domain multi channel signals synthetic method, obtain ultra broadband low-power radio frequency signal.
Wherein, described base band sources adopts waveform synthetic method to produce baseband signal.
Ultra broadband low-power radio frequency signal generator provided by the invention has advantages of following:
1) it need not improve under the prerequisite of high-speed DAC conversion ratio, and the method synthetic by multi-channel wide band signal produces ultra broadband low-power radio frequency signal;
2) signal quality producing than frequency multiplication scheme is high;
3) volume is little, low in energy consumption.
Accompanying drawing explanation
Fig. 1 shows traditional ULTRA-WIDEBAND RADAR low-power radio frequency signal generator theory diagram;
Fig. 2 shows the composition frame chart of ultra broadband low-power radio frequency signal generator in the present invention;
Fig. 3 shows the workflow diagram of ultra broadband low-power radio frequency signal generator in the present invention;
Fig. 4 shows the principle of work block diagram of base band sources in the present invention;
Fig. 5 (a)-(c) shows time domain waveform and the spectrogram of the baseband signal that in the present invention, base band sources produces;
Fig. 6 shows the spectrogram of ultra-wide band radio-frequency signal in the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, the specific embodiment testing the speed below in conjunction with traffic, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 2 shows the structural drawing of a kind of ultra broadband low-power radio frequency signal generator disclosed by the invention.As shown in Figure 2, this generator comprises the parts such as base band sources, switch, quadrature modulator and broadband signal compositor.First base band sources produces N connected two-way quadrature I and Q signal, then in first linear FM signal valid period, switch is communicated with the baseband signal of output with first quadrature modulator, the orthogonal modulation of realization and first radio-frequency (RF) local oscillator, obtains first radiofrequency signal; Second linear FM signal valid period, switch is communicated with the baseband signal of output with second quadrature modulator, and the orthogonal modulation of realization and second radio-frequency (RF) local oscillator, obtains second radiofrequency signal; The like, N linear FM signal valid period, switch is communicated with the linear FM signal of output with N quadrature modulator, and the orthogonal modulation of realization and N radio-frequency (RF) local oscillator, obtains N radiofrequency signal.Be equivalent under the control of switch, baseband signal is divided into N connected part of front and back from time domain, then uses different radio-frequency (RF) local oscillator f l1~f lN(bandwidth that the difference on the frequency between radio-frequency (RF) local oscillator is baseband signal), is directly modulated into the radiofrequency signal with different center frequency same band by N baseband signal, finally by compositor, N radiofrequency signal is concerned with and synthesizes a road ULTRA-WIDEBAND RADAR radiofrequency signal.This signal generator is mainly used in radar driver, and described base band sources adopts waveform synthetic method to produce baseband signal, and described baseband signal is formed by connecting by the linear FM signal of N identical characteristics.
The technical solution adopted for the present invention to solve the technical problems is: time domain multi-channel wide band signal is synthetic.In synthetic-aperture radar, generally adopt linear FM signal as transmitting, the frequency of this signal is linear change in time.First, producing N bandwidth is B, the zero intermediate frequency linear FM signal that pulsewidth is τ; Then, with the radio-frequency (RF) local oscillator signal of N the B bandwidth of being separated by, baseband signal is modulated into radiofrequency signal; Finally this N radiofrequency signal is synthesized to a signal, just obtained the ultra broadband low-power radio frequency signal of NB bandwidth.
Fig. 3 shows the ultra broadband low-power radio frequency signal method for generation process flow diagram that the present invention proposes.As shown in Figure 3, concrete implementation step is as follows:
The first step: by base band sources, produce two baseband signals, their bandwidth identical (800MHz), pulsewidth is 8 microseconds, the form of signal is linear FM signal;
Second step: with switch, these two baseband signals are separated from time domain, obtain the baseband signal that two-way staggered on the time;
The 3rd step: by the radio-frequency (RF) local oscillator (15.2GHz and 16GHz) of two 800MHz of being separated by, two baseband signals are carried out respectively to orthogonal modulation, obtain two radiofrequency signals, its frequency range is respectively: 14.8GHz-15.6GHz, 15.6GHz-16.4GHz;
The 4th step: two radiofrequency signals are synthesized in time domain, obtain last low-power radio frequency signal, its frequency range is: 14.8GHz-16.4GHz.
Fig. 4 shows the principle of work block diagram of base band sources generation baseband signal in the present invention.What in the present invention, adopt as shown in Figure 4, is waveform synthetic method.First use Matlab software to produce digital waveform data file; Then by data file in FPGA programming procedure, be embedded in the built-in RAM of FPGA, with FPGA program, be together cured in configuring chip.After powering on, under the control of pulse repetition rate (Pu l se Repeative Frequency-PRF), FPGA is reading number base band data from embedded RAM, then given fast two-way DAC chip, by DAC chip, under high-frequency clock effect, convert quadrature I and the Q signal of simulation to.Make great advantage in this way be: can carry out predistortion to Wave data, with the Amplitude phase distortion existing in this bucking-out system passage.
Fig. 5 shows time domain waveform and its spectrogram of the baseband signal that in the present invention, base band sources produces.Wherein (a) represents the time domain waveform of I signal; (b) represent the time domain waveform of Q signal; (c) represent the frequency spectrum of baseband signal.The present invention only uses a base band sources, main cause: 1) single base band sources is low in energy consumption, volume is little; 2) synchro control between a plurality of base band sources is more difficult; 3) a plurality of baseband signal high conformities that produced by a base band sources.
Fig. 6 shows the spectrogram of low-power radio frequency signal in the present invention.Its centre frequency is 15.6GHz, and bandwidth is 1.6GHz, and inband flatness is 2dB, and Out-of-band rejection degree is > 40dB, can meet well the requirement of polarization sensitive synthetic aperture radar system.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1.一种超宽带低功率射频信号发生器,其包括:1. An ultra-wideband low-power radio frequency signal generator, comprising: 基带信号源,其用于产生连续的基带信号;a baseband signal source, which is used to generate a continuous baseband signal; 开关,其用于控制将所述基带信号从时域上分割成多个部分;a switch, which is used to control the division of the baseband signal into a plurality of parts in the time domain; 正交调制器,其使用不同的射频本振将所分割成多个部分的基带信号调制成多个射频信号;a quadrature modulator, which uses different radio frequency local oscillators to modulate the divided baseband signal into a plurality of radio frequency signals; 合成器,其用于将所述多个射频信号在时域上合成为一路超宽带低功率射频信号。A synthesizer is used for synthesizing the multiple radio frequency signals into one ultra-wideband low-power radio frequency signal in the time domain. 2.如权利要求1所述的信号发生器,其特征在于,其用于雷达激励器。2. A signal generator as claimed in claim 1, characterized in that it is used in a radar exciter. 3.如权利要求1所述的信号发生器,其特征在于,其通过时域多通道信号合成法得到超宽带低功率射频信号。3. The signal generator as claimed in claim 1, characterized in that, it obtains an ultra-wideband low-power radio frequency signal through a time-domain multi-channel signal synthesis method. 4.如权利要求1所述的信号发生器,其特征在于,所述的基带信号源采用波形合成法产生基带信号。4. The signal generator according to claim 1, wherein the baseband signal source uses a waveform synthesis method to generate the baseband signal. 5.如权利要求1所述的信号发生器,其特征在于,所述基带信号由多个相同特性的线性调频信号连接而成。5. The signal generator according to claim 1, wherein the baseband signal is formed by connecting a plurality of chirp signals with the same characteristics. 6.如权利要求1所述的信号发生器,其特征在于,所述多个射频信号为具有不同中心频率相同带宽的射频信号。6. The signal generator according to claim 1, wherein the plurality of radio frequency signals are radio frequency signals with different center frequencies and the same bandwidth. 7.如权利要求1所述的信号发生器,其特征在于,所述基带信号源产生的是两路正交的I和Q信号。7. The signal generator according to claim 1, wherein the baseband signal source generates two orthogonal I and Q signals. 8.一种超宽带低功率射频信号产生方法,其包括:8. A method for generating an ultra-wideband low-power radio frequency signal, comprising: 步骤1、基带信号源产生基带信号;Step 1, the baseband signal source generates a baseband signal; 步骤2、将所述基带信号从时域上分成多个部分,形成多个零中频线性调频信号;Step 2, dividing the baseband signal into multiple parts in the time domain to form multiple zero-IF chirp signals; 步骤3、使用不同的射频本振将所述多个零中频线性调频信号进行正交调制,形成多个射频信号;Step 3, using different radio frequency local oscillators to perform quadrature modulation on the multiple zero-IF chirp signals to form multiple radio frequency signals; 步骤4、将所述多个射频信号合成为一个超宽带低功率射频信号。Step 4. Synthesize the multiple radio frequency signals into an ultra-wideband low-power radio frequency signal. 9.如权利要求8所述的方法,其特征在于,通过时域多通道信号合成法得到超宽带低功率射频信号。9. The method according to claim 8, wherein the ultra-wideband low-power radio frequency signal is obtained by a time-domain multi-channel signal synthesis method. 10.如权利要求8所述的方法,其特征在于,所述的基带信号源采用波形合成法产生基带信号。10. The method according to claim 8, wherein the baseband signal source generates the baseband signal using a waveform synthesis method.
CN201310392151.1A 2013-09-02 2013-09-02 A kind of ultra wide band low power radiofrequency signal generator and method thereof Active CN103675767B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310392151.1A CN103675767B (en) 2013-09-02 2013-09-02 A kind of ultra wide band low power radiofrequency signal generator and method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310392151.1A CN103675767B (en) 2013-09-02 2013-09-02 A kind of ultra wide band low power radiofrequency signal generator and method thereof

Publications (2)

Publication Number Publication Date
CN103675767A true CN103675767A (en) 2014-03-26
CN103675767B CN103675767B (en) 2016-06-29

Family

ID=50313908

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310392151.1A Active CN103675767B (en) 2013-09-02 2013-09-02 A kind of ultra wide band low power radiofrequency signal generator and method thereof

Country Status (1)

Country Link
CN (1) CN103675767B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104155494A (en) * 2014-08-19 2014-11-19 深圳市海威信科技有限公司 Multi-channel signal generation device
CN104267385A (en) * 2014-10-16 2015-01-07 中国科学院电子学研究所 Linear frequency-modulated signal generator with predistortion function
CN105223558A (en) * 2015-11-18 2016-01-06 中国船舶重工集团公司第七二四研究所 A kind of ultra broadband random waveform signal generating method
CN105306099A (en) * 2015-10-15 2016-02-03 成都众志天成科技有限公司 Ultra wideband high performance radio frequency signal generation system
CN106019239A (en) * 2016-05-30 2016-10-12 中国科学院电子学研究所 Synthetic aperture radar broadband signal transceiver device and synthetic aperture radar broadband signal transceiver method based on double pulses
CN106452465A (en) * 2016-11-16 2017-02-22 成都天奥测控技术有限公司 An ultra wide band multifunctional small-volume radiofrequency signal excitation module
CN108169738A (en) * 2017-11-23 2018-06-15 北京遥感设备研究所 A kind of wide intermediate frequency (IF) Linear chirp signal production method of biobelt and system
CN109521407A (en) * 2018-12-20 2019-03-26 陕西黄河集团有限公司 Radar emission subsystem bandwidth of operation test method and system
WO2019242591A1 (en) * 2018-06-18 2019-12-26 Huawei Technologies Co., Ltd. System and method for hybrid transmitter
CN112260979A (en) * 2020-10-22 2021-01-22 电子科技大学 A Multi-Channel Parallel Segmentation Modulation Method
CN115372907A (en) * 2022-08-19 2022-11-22 安徽白鹭电子科技有限公司 IQ modulation-based linear frequency modulation implementation method and system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1166094A (en) * 1996-05-20 1997-11-26 三菱电机株式会社 Spread spectrum communication device
US6618001B2 (en) * 2000-06-16 2003-09-09 Oki Electric Industry Co., Ltd. Apparatus for detecting signal
CN101178433A (en) * 2006-11-08 2008-05-14 北京航空航天大学 An ultra-wideband fast-agile frequency source
CN101409697A (en) * 2008-11-21 2009-04-15 王红星 Non-sine time-domain quadrature modulation method
CN101896034A (en) * 2007-04-13 2010-11-24 中微半导体设备(上海)有限公司 Radio frequency power source system and plasma reaction chamber applying same
CN102236089A (en) * 2010-04-28 2011-11-09 中国科学院电子学研究所 Transceiving system of synthetic aperture radar with super-high resolution

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1166094A (en) * 1996-05-20 1997-11-26 三菱电机株式会社 Spread spectrum communication device
US6618001B2 (en) * 2000-06-16 2003-09-09 Oki Electric Industry Co., Ltd. Apparatus for detecting signal
CN101178433A (en) * 2006-11-08 2008-05-14 北京航空航天大学 An ultra-wideband fast-agile frequency source
CN101896034A (en) * 2007-04-13 2010-11-24 中微半导体设备(上海)有限公司 Radio frequency power source system and plasma reaction chamber applying same
CN101409697A (en) * 2008-11-21 2009-04-15 王红星 Non-sine time-domain quadrature modulation method
CN102236089A (en) * 2010-04-28 2011-11-09 中国科学院电子学研究所 Transceiving system of synthetic aperture radar with super-high resolution

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104155494A (en) * 2014-08-19 2014-11-19 深圳市海威信科技有限公司 Multi-channel signal generation device
CN104267385A (en) * 2014-10-16 2015-01-07 中国科学院电子学研究所 Linear frequency-modulated signal generator with predistortion function
CN104267385B (en) * 2014-10-16 2016-09-21 中国科学院电子学研究所 There is the LFM waveforms generator of predistortion function
CN105306099A (en) * 2015-10-15 2016-02-03 成都众志天成科技有限公司 Ultra wideband high performance radio frequency signal generation system
CN105223558A (en) * 2015-11-18 2016-01-06 中国船舶重工集团公司第七二四研究所 A kind of ultra broadband random waveform signal generating method
CN106019239A (en) * 2016-05-30 2016-10-12 中国科学院电子学研究所 Synthetic aperture radar broadband signal transceiver device and synthetic aperture radar broadband signal transceiver method based on double pulses
CN106452465A (en) * 2016-11-16 2017-02-22 成都天奥测控技术有限公司 An ultra wide band multifunctional small-volume radiofrequency signal excitation module
CN106452465B (en) * 2016-11-16 2019-05-10 成都天奥测控技术有限公司 A kind of ultra-wide band multifunctional small size radiofrequency signal excitation module
CN108169738A (en) * 2017-11-23 2018-06-15 北京遥感设备研究所 A kind of wide intermediate frequency (IF) Linear chirp signal production method of biobelt and system
US11528180B2 (en) 2018-06-18 2022-12-13 Futurewei Technologies, Inc. System and method for hybrid transmitter
WO2019242591A1 (en) * 2018-06-18 2019-12-26 Huawei Technologies Co., Ltd. System and method for hybrid transmitter
US10848365B2 (en) 2018-06-18 2020-11-24 Futurewei Technologies, Inc. System and method for hybrid transmitter
EP4503448A3 (en) * 2018-06-18 2025-04-16 Huawei Technologies Co., Ltd. System and method for hybrid transmitter
EP3804252A4 (en) * 2018-06-18 2021-07-14 Huawei Technologies Co., Ltd. SYSTEM AND PROCEDURE FOR HYBRID TRANSMITTERS
US11218356B2 (en) 2018-06-18 2022-01-04 Futurewei Technologies, Inc. System and method for hybrid transmitter
CN109521407A (en) * 2018-12-20 2019-03-26 陕西黄河集团有限公司 Radar emission subsystem bandwidth of operation test method and system
CN112260979B (en) * 2020-10-22 2022-02-01 电子科技大学 Multichannel parallel segmented modulation method
CN112260979A (en) * 2020-10-22 2021-01-22 电子科技大学 A Multi-Channel Parallel Segmentation Modulation Method
CN115372907A (en) * 2022-08-19 2022-11-22 安徽白鹭电子科技有限公司 IQ modulation-based linear frequency modulation implementation method and system

Also Published As

Publication number Publication date
CN103675767B (en) 2016-06-29

Similar Documents

Publication Publication Date Title
CN103675767B (en) A kind of ultra wide band low power radiofrequency signal generator and method thereof
CN102394737B (en) Signal source for multi-carrier micro-discharge test of spaceborne microwave component
Xu et al. Power-efficient switching-based CMOS UWB transmitters for UWB communications and radar systems
CN108089179B (en) Ultra-wideband radar system and method for realizing single-channel multi-frequency-point simultaneous transceiving
CN103675780B (en) A kind of radar simulator for the full coherent of Ku wave band
CN103560769B (en) A kind of AWG and random waveform production method
CN102780490B (en) DDS (direct digital synthesis) type ultra-wide band frequency-modulated signal generating circuit and method
CN102508180B (en) Frequency amplitude phase rapid adjustable microwave generator
CN108923814A (en) It may be programmed the wireless communications method and system of Meta Materials based on time domain
CN105223555A (en) A kind of wideband low noise frequency modulation signal source
CN202166734U (en) Wideband frequency-modulation continuous-wave radar transceiving subsystem
CN111123230A (en) Phased array intermediate frequency radar simulator, radar signal processor test method and device
CN104917556A (en) Synchronous multi-beam signal generation method based on ultrahigh-speed DAC
CN106772264A (en) A kind of ground and spaceborne general ultra-wideband radar signal generating means and method
CN103731181A (en) Broadband signal generator
CN203224623U (en) Multi-frequency compact-type array all-digital radar device
CN106849950A (en) Radiofrequency signal A/D conversion system and method based on multi tate parallel sampling
CN104300975A (en) Decimal and integer frequency divider circuit and implementation method thereof
CN103630881B (en) A kind of distributed waveform generation on-line synchronous Circuit tuning and method
CN103532589A (en) Frequency agile signal generating system and method
CN205179021U (en) X wave band broadband frequency synthesizer
CN111781581B (en) Terahertz radar system suitable for fine gesture recognition
CN205017281U (en) Ultrashort wave pectination spectrum signal produces circuit
CN204334482U (en) A signal generator that can output multiple types of signals simultaneously
CN106598134A (en) Digital coherent narrow pulse generator

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant