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Capacitance Sensing and Software-Realized Lock-in Amplifier for the Electromagnetically Levitated Micro Gyroscope 被引量:1
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作者 黄晓刚 陈文元 +2 位作者 刘武 张卫平 吴校生 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第2期250-256,262,共8页
In the novel prototype of micro-gyroscope structure,the new configured capacitance sensing scheme for the micro gyroscope was analyzed and the virtual instrument based detection scheme was implemented.The digital lock... In the novel prototype of micro-gyroscope structure,the new configured capacitance sensing scheme for the micro gyroscope was analyzed and the virtual instrument based detection scheme was implemented.The digital lock-in amplifier was employed in the capacitance detection to restrain the noise interference.The capacitance analysis shows that 1 fF capacitance variation corresponds to 0.1 degree of the turn angle.The differential capacitance bridge and the charge integral amplifier were used as the front signal input interface.In the implementation of digital lock-in amplifier,a new routine which warranted the exactly matching of the reference phase to signal phase was proposed.The result of the experiment shows that digital lock-in amplifier can greatly eliminate the noise in the output signal.The non linearity of the turn angle output is 2.3% and the minimum resolution of turn angle is 0.04 degrees.The application of the software demodulation in the signal detection of micro-electro-mechanical-system(MEMS)device is a new attempt,and it shows the prospective for a high-performance application. 展开更多
关键词 micro gyroscope capacitance sensing inertial sensor digital lock-in amplifier micro-electro-mechanical-system sensor
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A virtual lock-in amplifier,spectrum analyzer,impedance meter and semiconductor analyzer implemented on an SR7265 hardware target 被引量:1
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作者 BAI Jiang-hua 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2018年第1期50-58,共9页
Lock-in amplifiers are used to detect and measure very small alternating current(AC)signals down to the range of nVs.Accurate measurements can be made even when the small signals are buried by noise thousands of times... Lock-in amplifiers are used to detect and measure very small alternating current(AC)signals down to the range of nVs.Accurate measurements can be made even when the small signals are buried by noise thousands of times larger.With the digital signal processing(DSP)technology involved in modern instrumentation,a lock-in amplifier is more versatile in sensing and recovering small signals.Combining the virtual instrumentation technology,we reorganize the functional blocks of a programmable lock-in amplifier and build it as a virtual spectrum analyzer,virtual impedance meter,virtual network analyzer,virtual semiconductor parameter analyzer,signal generator,etc.A 4 layer model is used to implement these virtual instruments.The same virtual instrument can also be implemented on a general purpose FPGA developing board. 展开更多
关键词 virtual lock-in amplifier virtual spectrum analyzer virtual impedance meter virtual semiconductor analyzer 4 layer model
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Digital Lock-in Amplifier Based on Microcontroller
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作者 陶安利 徐国栋 +1 位作者 骆科学 张钢领 《Journal of Measurement Science and Instrumentation》 CAS 2010年第3期285-288,共4页
A method of implementing high cost-effective and highly integrated digital lock-in amplifier with microcontroller is discussed. And the digital lock-in amplifier is more suitable for meastwing lowfrequency weak signal... A method of implementing high cost-effective and highly integrated digital lock-in amplifier with microcontroller is discussed. And the digital lock-in amplifier is more suitable for meastwing lowfrequency weak signal. Digital signal sequence is obtained through sampling signal measured over an integer number of signal periods, but digital reference sequence is acquired through mathematical operation, then digital phase sensitive detection can be implemented by calculating the cross-correlation function of digital signal sequence and digital reference sequence. In addition, the frequency response and phase character of the digital lock-in amplifier is analyzed. Finally, the designed digital lock-in amplifier is achieved. Expermental results show that the digital lock-in amplifier can be used for measuring weak signal with low ignal-to-noise ratio. 展开更多
关键词 digital lock-in amplifier SNR MICROCONTROLLER
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5Gb/s 0.25μm CMOS Limiting Amplifier
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作者 胡艳 王志功 +1 位作者 冯军 熊明珍 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2003年第12期1250-1254,共5页
A limiting amplifier (LA) IC implemented in TSMC standard 0.25μm CMOS technology is described.Active inductor loads and direct-coupled technology are employed to increase the gain,broaden the bandwidth,reduce the pow... A limiting amplifier (LA) IC implemented in TSMC standard 0.25μm CMOS technology is described.Active inductor loads and direct-coupled technology are employed to increase the gain,broaden the bandwidth,reduce the power dissipation,and keep a tolerable noise performance.Under a 3.3V supply voltage,the LA core achieves a gain of 50-dB with a power consumption below 40mW.The measured input sensitivity of the amplifier is better than 5m V _ pp .It can operate at bit rates up to 7Gb/s with an rms jitter of 0.03 UI or less.The chip area is only 0.70mm×0.70mm.According to the measurement results,this IC is expected to work at the standard bit rate levels of 2.5,3.125,and 5Gb/s. 展开更多
关键词 limiting amplifier active inductor shunt peaking technique CMOS
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Analysis of the third harmonic for class-F power amplifiers with an Ⅰ–Ⅴ knee effect
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作者 赵博超 卢阳 +5 位作者 魏家行 董梁 王毅 曹梦逸 马晓华 郝跃 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第5期592-596,共5页
The appearance of third-generation semiconductors represented by gallium nitride (GaN) material greatly improves the output power of a power amplifier (PA), but the efficiency of the PA needs to be further improve... The appearance of third-generation semiconductors represented by gallium nitride (GaN) material greatly improves the output power of a power amplifier (PA), but the efficiency of the PA needs to be further improved. The Class-F PA reduces the overlap of drain voltage and current by tuning harmonic impedance so that high efficiency is achieved. This paper begins with the principle of class-F PA, regards the third harmonic voltage as an independent variable, analyzes the influence of the third harmonic on fundamental, and points out how drain efficiency and output power vary with the third harmonic voltage with an I-V knee effect. Finally, the best third harmonic impedance is found mathematically. We compare our results with the Loadpull technique in advanced design system environment and conclude that an optimized third harmonic impedance is open in an ideal case, while it is not at an open point with the I-V knee effect, and the drain efficiency with optimized third harmonic impedance is 4% higher than that with the third harmonic open. 展开更多
关键词 class-F power amplifier third harmonic I-V knee effect Loadpull technique
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Networking Intelligent Pressure Sensor Using Digital Lock-in Amplification Technology
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作者 陶安利 郑娟娟 +1 位作者 王力涵 历运周 《Journal of Measurement Science and Instrumentation》 CAS 2011年第1期38-41,共4页
Introducing a System-on-Chip (SoC) microcontroller (C8051F350) into a ceramic pressure sensor has resulted in the design of a intelligent sensor. An improved algorithm for digital phassensitive detection is used ... Introducing a System-on-Chip (SoC) microcontroller (C8051F350) into a ceramic pressure sensor has resulted in the design of a intelligent sensor. An improved algorithm for digital phassensitive detection is used to perform lock-in amplification of the sensor signal. The compensation for the sensor error is realized by the detection of the sensor's supply voltage and working temperature. The system also has the function of short/open circuit fault detection and can ommamicate with other digital equipment through an RS-485 communication interface. In the design, full utilization of the SoC microcontroller' s internal resource results in the simple hardware structure. Experimental results show that the error of the sensor is less than 0.5% at range ratio 1 : 10. Employing the microcontroller and using lock-in amplification algorithm are an effective method for achieving an intelligent sensor of slowly-varying physical quantities, thereby improving the measuring accuracy and performance. 展开更多
关键词 sensor networks pressure sensor intelligent design lock-in amplifier
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Fault Waveform Regenerator and Its Digital Closed-Loop Modification Technique
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作者 Xiaoming Sun 《Journal of Power and Energy Engineering》 2019年第2期14-26,共13页
In order to provide a novel and more effective alternative to the commonly used relay protection testing device that outputs only the sinusoidal testing signals, the concept of fault waveform regenerator is proposed i... In order to provide a novel and more effective alternative to the commonly used relay protection testing device that outputs only the sinusoidal testing signals, the concept of fault waveform regenerator is proposed in this paper, together with its hardware structure and software flow chart. Fault waveform regenerator mainly depends on its power amplifiers (PAs) to regenerate the fault waveforms recorded by digital fault recorder (DFR). To counteract the PA’s inherent nonlinear distortions, a digital closed-loop modification technique that is different from the predistortion technique is conceived. And the experimental results verify the effectiveness of the fault waveform regenerator based on the digital closed-loop modification technique. 展开更多
关键词 Fault WAVEFORM REGENERATOR DIGITAL CLOSED-LOOP MODIFICATION technique Power amplifier Relay Protection Testing Device
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基于斩波稳定技术的可编程增益放大器
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作者 陈泽锴 卢宏斌 +1 位作者 汪家奇 申人升 《微处理机》 2024年第5期7-12,共6页
为满足模拟前端检测电路的低噪声、低失调的要求,介绍一种采用0.18μm CMOS工艺制作的基于斩波稳定技术的可编程增益放大器。采用斩波稳定技术降低失调与低频1/f噪声,利用可编程增益级提高模拟前端电路输出摆幅的利用率,以满足不同环境... 为满足模拟前端检测电路的低噪声、低失调的要求,介绍一种采用0.18μm CMOS工艺制作的基于斩波稳定技术的可编程增益放大器。采用斩波稳定技术降低失调与低频1/f噪声,利用可编程增益级提高模拟前端电路输出摆幅的利用率,以满足不同环境下的检测需求。该款放大器从1 Hz到10 kHz的等效输入噪声积分值为1.43μV,使用阻抗增强电路实现4.52 GΩ的运放输入阻抗;采用C-2C电容阵列作为可变电容阵列,可实现0~15倍最小步长1/64倍的增益调节,对于需要精细化调节增益的低噪声电路有广泛的应用场景。 展开更多
关键词 斩波稳定技术 可编程增益放大器 阻抗增强电路
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UHF波段功率放大器设计
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作者 彭书林 姚振东 《成都信息工程大学学报》 2024年第1期8-12,共5页
为某UHF波段的发射机设计一款己类功率放大器,工作于频段430~455 MHz,介绍了谐波控制和匹配网络的设计。在放大器输出匹配网络前添加谐波控制电路,通过对晶体管漏极的谐波控制生成己类放大器的工作波形。同时,在输入、输出阻抗是复阻抗... 为某UHF波段的发射机设计一款己类功率放大器,工作于频段430~455 MHz,介绍了谐波控制和匹配网络的设计。在放大器输出匹配网络前添加谐波控制电路,通过对晶体管漏极的谐波控制生成己类放大器的工作波形。同时,在输入、输出阻抗是复阻抗的情况下,使用简化实频技术对电路进行匹配,提高了匹配网络的效率。测试结果显示,该放大器输出功率达60 dBm,对应的增益为20 dB,PAE为79%,达到设计要求。 展开更多
关键词 UHF波段 己类功率放大器 谐波控制 简化实频技术
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一种基于电容中和技术的低功耗宽带VGA设计
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作者 陈亚西 吴锐 梁兴东 《集成电路应用》 2024年第4期30-32,共3页
阐述一种基于电容中和技术的宽带可变增益放大器(VGA),用于高速通信和高分辨率雷达系统。提出的负电容通路有效地拓展了带宽,并在不同的增益设定下实现平坦的带内增益。仿真结果表明,VGA在增益-2.8~49.4dB调节范围内均实现带宽超过4.0GH... 阐述一种基于电容中和技术的宽带可变增益放大器(VGA),用于高速通信和高分辨率雷达系统。提出的负电容通路有效地拓展了带宽,并在不同的增益设定下实现平坦的带内增益。仿真结果表明,VGA在增益-2.8~49.4dB调节范围内均实现带宽超过4.0GHz。它的功耗在1V的电源电压下为16.5mW,核心电路面积为0.006 mm^(2)。 展开更多
关键词 通信和雷达系统 可变增益放大器 电容中和技术 宽带 宽增益范围
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Coherent beam combination of two fiber amplifiers with multi-dithering technique 被引量:1
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作者 马阎星 司磊 +2 位作者 王小林 周朴 许晓军 《Optoelectronics Letters》 EI 2009年第1期18-20,共3页
Coherent beam combination of two W-level fiber amplifiers with multi-dithering technique is demonstrated.In the experiment,the master laser is split into two channels.Multi-dithering technique is used for phase contro... Coherent beam combination of two W-level fiber amplifiers with multi-dithering technique is demonstrated.In the experiment,the master laser is split into two channels.Multi-dithering technique is used for phase control.One channel is modulated with a 100 kHz sine wave produced by signal generator,and DSP lock-in amplifier is used for electric signal processing in the feedback loop.When the phase control loop is off,the far field interference pattern is blurred and dynamic with 20% fringe contrast.When the f... 展开更多
关键词 FEEDBACK Optical resonators Phase control Signal generators Signal processing
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跨阻放大器低温性能及其对THz光电信号的放大应用
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作者 李弘义 谭智勇 +2 位作者 邵棣祥 符张龙 曹俊诚 《太赫兹科学与电子信息学报》 2023年第1期16-21,共6页
随着太赫兹技术、低温电子学和射电天文学的发展,对可低温环境下工作的集成封装式跨阻放大芯片的需求增加。本文针对一种Ge-Si基底型跨阻放大器,主要研究了其深低温环境下的电学性能,获得了8 K温度下放大器芯片的典型端口电流-电压特性... 随着太赫兹技术、低温电子学和射电天文学的发展,对可低温环境下工作的集成封装式跨阻放大芯片的需求增加。本文针对一种Ge-Si基底型跨阻放大器,主要研究了其深低温环境下的电学性能,获得了8 K温度下放大器芯片的典型端口电流-电压特性曲线和增益曲线,得到了在0.1~3 GHz频带内较为平坦的增益效果;为了验证其对太赫兹光电信号的放大功能,将该跨阻放大器与太赫兹量子阱探测器集成封装,并搭建了太赫兹脉冲激光探测系统,在8 K温度下实现了对脉宽2μs太赫兹光电探测信号的有效放大,跨阻增益约560Ω,电流放大增益为1.78 mA/V。上述研究成果首次验证了商用跨阻放大器在深低温环境下应用的可行性,为太赫兹高速探测与高频通信领域的集成跨阻放大提供了一种有效技术手段。 展开更多
关键词 太赫兹探测 高速封装 跨阻放大器 低温放大技术
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Resonator integrated optic gyro based on multilevel laser frequency lock-in technique 被引量:5
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作者 Ziwen Pan Chengfei Zhang +4 位作者 Chengfeng Xie Yongqiu Zheng Haotian Li Sun Tang Jun Liu 《Chinese Optics Letters》 SCIE EI CAS CSCD 2018年第4期16-19,共4页
The resonator integrated optic gyros(RIOGs) based on the Sagnac effect have gained extensive attention in navigation and guidance systems due to their predominant advantages: high theoretical accuracy and simple in... The resonator integrated optic gyros(RIOGs) based on the Sagnac effect have gained extensive attention in navigation and guidance systems due to their predominant advantages: high theoretical accuracy and simple integration. However, the problems of losing lock and low lock-in accuracy are the bottlenecks, which restrict the development of digital RIOGs. Therefore, a multilevel laser frequency lock-in technique has been proposed in this Letter to address these problems. The experimental results show that lock-in accuracy can be improved one order higher and without losing lock in a variable temperature environment. Then, a digital miniaturized RIOG prototype(18 cm × 18 cm × 20 cm) has been produced, and long-term(1 h) bias stability of 26.6 deg/h is successfully demonstrated. 展开更多
关键词 Resonator integrated optic gyro based on multilevel laser frequency lock-in technique FSR WRR
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A Portable Analog Lock-In Amplifier for Accurate Phase Measurement and Application in High-Precision Optical Oxygen Concentration Detection 被引量:2
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作者 Xi CHEN Jun CHANG +4 位作者 Fupeng WANG Zongliang WANG Wei WEI Yuanyuan LIU Zengguang QIN 《Photonic Sensors》 SCIE EI CAS CSCD 2017年第1期27-36,共10页
A portable analog lock-in amplifier capable of accurate phase detection is proposed in this paper. The proposed lock-in amplifier, which uses the dual-channel orthometric signals as the references to build the xy coor... A portable analog lock-in amplifier capable of accurate phase detection is proposed in this paper. The proposed lock-in amplifier, which uses the dual-channel orthometric signals as the references to build the xy coordinate system, can detect the relative phase between the input and x-axis based on trigonometric function. The sensitivity of the phase measurement reaches 0.014degree, and a detection precision of 0.1 degree is achieved. At the same time, the performance of the lock-in amplifier is verified in the high precision optical oxygen concentration detection. Experimental results reveal that the portable analog lock-in amplifier is accurate for phase detection applications. In the oxygen sensing experiments, 0.058% oxygen concentration resulted in 0.1 degree phase shift detected by the lock-in amplifier precisely. In addition, the lock-in amplifier is small and economical compared with the commercial lock-in equipments, so it can be easily integrated in many portable devices for industrial applications. 展开更多
关键词 Portable analog lock-in amplifier phase shift measurement high accuracy optical oxygen detection
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基于Multisim的模拟信号发生器的设计
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作者 陈根龙 刘浩 《微型电脑应用》 2023年第7期17-20,28,共5页
设计一种基于集成运算放大器的方波、三角波、正弦波信号发生器,结构简单,成本低廉。全面讨论相关电路的原理、参数的计算,并利用电路仿真软件Multisim进行详细的仿真、测试,对信号发生器电路的设计和仿真提供理论指导。该电路既可在电... 设计一种基于集成运算放大器的方波、三角波、正弦波信号发生器,结构简单,成本低廉。全面讨论相关电路的原理、参数的计算,并利用电路仿真软件Multisim进行详细的仿真、测试,对信号发生器电路的设计和仿真提供理论指导。该电路既可在电子基础实验室用作其他电路的信号源,也可以用于电子技术综合实验,要求学生自行完成设计、制作、组装,对提高学生的工程实践能力有较好的促进作用。 展开更多
关键词 运算放大器 信号发生器 MULTISIM 电子技术综合实验
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带有自动归零技术的两级逐次逼近模拟数字转换器
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作者 胡毅 李振国 +2 位作者 侯佳力 薛明艺 胡伟波 《电子器件》 CAS 北大核心 2023年第1期22-28,共7页
提出和验证了一个两级高位模数转换器新架构。该架构用剩余电压放大器连接两级。与传统结构不同的是:此剩余电压放大器使用了改进的新型自动归零技术,并且在第二级中,两个单端数模转换器代替一个差分数模转换器。第一级采样量化时,剩余... 提出和验证了一个两级高位模数转换器新架构。该架构用剩余电压放大器连接两级。与传统结构不同的是:此剩余电压放大器使用了改进的新型自动归零技术,并且在第二级中,两个单端数模转换器代替一个差分数模转换器。第一级采样量化时,剩余电压放大器短路,将自身噪声失配电压放大,并保存在其中一个单端数模转换器中。第一级量化完毕,放大器将剩余电压和其噪声失配电压一起放大并保存在另一个单端数模转换器中。第二级量化时,两个单端数模转换器上的失配电压及低频噪声会互相抵消。基于该技术,利用180 nm工艺,实现了500 kHz采样频率的16位数模转换器。在放大器输入等效噪声(rms)为89μV情况下,利用560μA电流,实现了93.7 dB的SNDR。 展开更多
关键词 模数转换器 逐次逼近型 自动归零技术 剩余电压放大器 伪差分数模转换器
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利用RAPD标记对我国主栽的汕优杂交稻和其亲本进行区别和鉴定 被引量:22
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作者 向太和 汪秀峰 +2 位作者 李莉 吴家道 杨剑波 《作物学报》 CAS CSCD 北大核心 2000年第3期292-296,共5页
利用 RAPD技术 ,从 50 0个随机寡核苷酸引物 ( 10聚体 )中筛选出 8个引物能在 3个主栽的汕优系统杂交稻组合汕优 63、汕优 64和汕优晚 3及其亲本之间稳定地扩增出 12个强的多态性标记。利用这些多态性标记能够有效地区别汕优 63、汕优 6... 利用 RAPD技术 ,从 50 0个随机寡核苷酸引物 ( 10聚体 )中筛选出 8个引物能在 3个主栽的汕优系统杂交稻组合汕优 63、汕优 64和汕优晚 3及其亲本之间稳定地扩增出 12个强的多态性标记。利用这些多态性标记能够有效地区别汕优 63、汕优 64和汕优晚 展开更多
关键词 RAPD技术 多态性标记 杂交水稻 鉴定
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高功率全固态绿光激光技术研究进展 被引量:7
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作者 高清松 马毅 +4 位作者 庞毓 童立新 裴正平 孙殷宏 唐淳 《强激光与粒子束》 EI CAS CSCD 北大核心 2011年第9期2373-2376,共4页
报道了高功率全固态腔内和腔外倍频两种绿光激光器研究进展。腔内倍频绿光激光器采用L型腔双棒串接结构,在重复频率10kHz时,用三硼酸锂晶体倍频获得绿光功率186W,光-光效率达15.8%。腔外倍频绿光激光器采用主振荡和功率放大器,在重复频... 报道了高功率全固态腔内和腔外倍频两种绿光激光器研究进展。腔内倍频绿光激光器采用L型腔双棒串接结构,在重复频率10kHz时,用三硼酸锂晶体倍频获得绿光功率186W,光-光效率达15.8%。腔外倍频绿光激光器采用主振荡和功率放大器,在重复频率400Hz时,获得基频激光单脉冲能量1.2J,采用Ⅱ类相位匹配KTP晶体腔外倍频,获得525mJ的绿光输出,倍频效率为43.7%。采用偏振合成技术获得了单脉冲能量大于1J的绿光输出。在该激光放大器实验装置上,进行了双模块热效应补偿技术和受激布里渊散射相位共轭技术实验研究,改善了激光光束质量。 展开更多
关键词 激光技术 固体激光器 绿光 放大器 倍频
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一种新型DNA标记技术——限制性位点扩增多态性(RSAP)的建立与优化 被引量:26
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作者 杜晓华 王得元 巩振辉 《西北农林科技大学学报(自然科学版)》 CSCD 北大核心 2006年第9期45-49,54,共6页
了避开基于限制性酶切位点分子标记技术的DNA酶切环节,简化其复杂的程序,试验以辣椒为材料,建立了一种新型DNA标记技术——限制性位点扩增多态性(RSAP),并对其反应体系进行了优化,对RSAP适用性、重复性进行了检验。结果显示,RSA... 了避开基于限制性酶切位点分子标记技术的DNA酶切环节,简化其复杂的程序,试验以辣椒为材料,建立了一种新型DNA标记技术——限制性位点扩增多态性(RSAP),并对其反应体系进行了优化,对RSAP适用性、重复性进行了检验。结果显示,RSAP技术的引物为2条长度均为18bp的引物,引物的3’端为4~6个碱基的限制性酶切位点序列,接着是12~14个碱基的随机序列,2条引物的限制性位点和随机序列不同;PCR扩增的前5个循环采用35C的退火温度,随后的35个循环采用48℃的退火温度;在25μL反应体系中,模板DNA用量为20ng,Mg^2+浓度为2.5mmol/L,dNTPs浓度为0.2mmol/L,TaqDNA聚合酶用量为1.5U,2条引物浓度均为600nmol/L;RSAP技术重复性好,适用性广泛,是一种操作简便、产率中等、稳定可靠的DNA标记技术。 展开更多
关键词 限制性位点扩增多态性 DNA标记技术 蔬菜育种
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红花SRAP扩增体系的建立和优化 被引量:24
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作者 彭飒 郭美丽 +1 位作者 陈跃华 郭庆华 《第二军医大学学报》 CAS CSCD 北大核心 2006年第5期544-547,共4页
目的:探讨影响红花SRAP扩增的各种因素,建立能够稳定扩增红花基因组的体系,为研究红花重要性状的遗传基础及建立分子辅助标记育种的技术平台奠定基础。方法:用CTAB法提取红花DNA,设计Taq酶浓度(0.02、0.040、.06 U/μl)、dNTP浓度(0.15... 目的:探讨影响红花SRAP扩增的各种因素,建立能够稳定扩增红花基因组的体系,为研究红花重要性状的遗传基础及建立分子辅助标记育种的技术平台奠定基础。方法:用CTAB法提取红花DNA,设计Taq酶浓度(0.02、0.040、.06 U/μl)、dNTP浓度(0.15、0.25、0.30 mmol/L)、Primer浓度(0.15、0.30、0.45μmol/L)3因素3水平27次实验和Mg2+浓度(0.5、1.0、1.5、2.0、2.5、3.0、3.5、4.0 mmol/L)8水平单因素实验。在25μl体系中加入模板DNA 20 ng。对体系进行优化,用琼脂糖进行检测。结果:本研究建立了适合红花的SRAP体系,Taq酶浓度为0.02 U/μl,dNTP浓度为0.25 mmol/L,Primer浓度为0.30μmol/L,Mg2+的浓度为3.0 mmol/L,优化后的体系目标条带增多,重现性好,得到了较好的扩增效果。结论:本研究建立的反应体系适合红花SRAP的研究。 展开更多
关键词 红花 相关序列扩增多态性 核酸扩增技术
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