An electronic quadrature device is provided comprising at least one I signal path and at least one Q signal path; 提供了一种电子正交装置,其包括至少一个I信号通路以及至少一个Q信号通路;
Change of G α q/ 11-mediated signal transduction pathway in aorta of spontaneously hypertensive rats Gαq/11介导的信号转导通路在自发性高血压大鼠主动脉中的变化
A cDNA microarray ( GEArray~ ( TM) Q) targeting TGF-β/ BMP signal transduction was used to screen the genes which showed significant changes in expression of TGF-β pathway of HSC by glycyrrhizin. 应用针对于TGF-β/BMP信号转导通路的GEArray~(TM)Q基因芯片技术,筛选出甘草酸作用后HSC中TGF-β信号通路表达发生明显改变的相关基因。
This paper analyzes the influence of image signal that is caused by imbalance of amplitude and phase of I, Q channel in receiver on following signal processing and/ possible error calibration technology. 分析了接收机I、Q通道幅相不平衡产生的镜像信号对后续信号处理的影响及可取的误差校正技术。
Effect of G α q/ 11-mediated signal transduction pathway in cardiac hypertrophy induced by angiotensin II Masseter hypermyotrophy had been reported early in 1930 and 1942, but the etiopathology is not clear. Gαq/11信号转导通路在血管紧张素Ⅱ引起心肌肥大中的作用早在1880年,Legg首次报道咬肌肥大畸形,之后Boldt和Coffey又分别于1930年和1942年作过报道;
The FIR filtering-based digital orthogonal transformation is implemented by reusing IP core and VHDL design of peripheral circuit. The I and Q quantities are successfully extracted, greatly enhancing the speed of digital signal processing. 通过IP核的重用和外围电路的VHDL设计,实现了基于FIR滤波的数字正交变换,并成功地提取了中频雷达脉冲信号的I,Q量,大大提升了数字信号处理的速度。
Single ended-to-differential conversion, buffering and I/ Q phase separation of the LO signal are included in this mixer. 并且在混频器单元中包含了单端-差分变换电路、缓冲放大器和I/Q多相滤波器电路。
By coherent integration, this method can fully retain the signal characters and separate I/ Q components of the QPSK signal while restraining noise. 该方法在相参积累抑制噪声的同时,还完整地保留了信号特征,并实现QPSK信号的I/Q分量分离。
The Research and Development of Real-Time I/ Q Baseband Signal Generator 实时I/Q基带信号发生器的研制
A new DSP algorithm for Doppler frequency measurement is constructed in the second method, where the circuit configuration is simplified, the balanced I/ Q channels can be available and the time for digital signal processing is reduced. 在第二种方案中,提出了一种测量多普勒频移的数字信号处理算法,简化了硬件,获得了平衡的I/Q信道输出,缩短了DSP处理时间。
The paper presents the polyphase filtering to correct the I/ Q datum acquired in combination with the Synthetic Aperture Radar ( SAR) signal processing by contrast with Bessel filtering. 该文结合合成孔径雷达信号处理,提出了多相滤波法来修正通过DPD获得的I/Q通道数据,并和Bessel滤波进行了比较。
The testing apparatus has five modules including ancillary data and signals generating module, remote controlling and monitoring module, data transmitting 、 recording and displaying module, I/ Q radar chirp signal source and Gauss random noise source. 该测试仪有五个组成部分:辅助数据及信号形成单元,遥控和监测单元,数据传输、记录及显示单元,I/Q两路雷达正交视频信号源,高斯随机噪声源。
In this paper, the influence of amplitude and phase imbalances of I/ Q channels on spectrum estimation of weather radar echo signal is analyzed in detail and the simulation results by basic spectrum estimation methods of frequency and time domain is present. 详细分析了气象雷达中正交通道幅相不平衡对气象回波信号谱估计的影响,并给出基本的频域和时域估计法的仿真结果。
This paper presents a Local Osicillator ( LO) buffer for WLAN which can tune the I/ Q phase of the LO signal in order to calibrate IQ imbalance in direct conversion transceiver. 该文提出了一种应用于WLAN相位可调的本振缓冲器,用于校准直接下变频收发机的I/Q两路不平衡。
Influence of Amplitude and Phase Imbalance of I/ Q Channels on Spectrum Estimation of Weather Radar Signal 气象雷达正交通道幅相不平衡对谱估计的影响
This paper proposes a digital calibration method to wideband receiver. First, the I/ Q mismatch errors are estimated by local test signal injection. 本文提出了一种宽带接收机中校正I/Q幅相误差的数字方法,首先通过输入测试信号获得误差信息,籍此计算校正所需参数,接着构造滤波器组对I/Q信号进行滤波校正。
This paper presents a novel technique for directly IF sampling and digitally obtaining the inphase ( I) and quadrature ( Q) components of the IF signal. 本文提出了一种直接对中频信号进行A/D变换,然后在数字域中对信号进行正交检波处理的新方法。
Digital I/ Q demodulation picks up the amplitude and phase of signal and remains all the information intact under the signal envelope. 数字正交检波技术能够较好地提取信号的幅度和相位参数,保留信号包络中的所有信息。
In the subsystem of the receiver, to get I Q two-channel digital signal, return signal was perpendicular sampled at Intermediate frequency. 在接收机子系统中,采用了中频直接正交采样来完成对信号的I、Q双通道的分离。
None of the methods can offer reliable Q value in the case of low seismic signal/ noise ratio. 当记录信噪比较低时,没有任何一种现行方法能求出可靠的Q值。
In this paper, offers a signal reception system, analyzes the detection of LFM signal, discusses the influence of imbalance of amplitude and phase of I 、 Q channel and match filtering of LFM signal. 接着对超宽带LFM信号检测进行了讨论,最后分析了信号接收系统I、Q通道幅相误差校正和LFM信号匹配滤波技术。
Author designed a high Q value auto tracing sampling filter for signal detection of weak light level. 作者用采样滤波器制成了用于弱光信号检测的高Q值自跟踪采样滤波器。
AIM: To investigate the role of G α q/ 11-mediated signal transduction pathway in cardiac hypertrophy induced by angiotensin II ( AngII). 目的:研究Gαq/11介导的信号转导通路在血管紧张素II(AngII)引起心肌肥大中的作用。
This paper proposes a new correction method of the amplitude-phase error in I/ Q channel based on the signal statistical characteristics in time domain, and gives the block diagram of correction network. 提出了一种新的基于信号时域统计特性的的雷达信号I/Q通道幅相误差的校正方法,给出了实际校正网络框图。
Back Projection Imaging I 、 Q Realization of Impulse Signal SAR 冲激信号SAR反向投影成像方法I、Q实现
And the principles of generating I/ Q signal, as well as designing and debugging circuit are also detailed in this paper. 同时详细阐述了用该方法产生正交信号的原理、硬件电路设计及调试。
Besides, with I/ Q sub-sampling, digital processing is simplified, but a fixed phase lag between I and Q signal exists after odd/ even separation. 采用正交欠采样技术能简化数字处理,但奇偶分离后的I、Q两路信号之间存在着固定相位差。
In multi-standard applications, such as the DTV-Tuner, divider may be used to extend the frequency range of the frequency synthesizer, or to generate the quadrature ( I/ Q) signal. 在数字电视调谐器等多标准应用中,可以用分频器扩展频率综合器的频率范围,同时产生正交信号。
And to obtain higher mirror suppression ratio, the I/ Q data from direct sampling of IF signal are calibrated by singular value decomposition ( SVD) which is proved effective by simulation. 为获得更高的抑制性能,对中频采样获得的IQ数据用奇异值分解(SVD)方法进行校正,并通过仿真证明方法的有效性。