QUADRATURE相关论文
A low-power frequency synthesizer for GPS/Galileo L1/E1 band receivers implemented in a 0.18μm CMOS process is introduc......
A 5-GHz CMOS programmable frequency divider whose modulus can be varied from 2403 to 2480 for 2.4-GHz ZigBee application......
The design consideration and implementation of a CMOS frequency synthesizer for the portable hybrid global navigation sa......
A high performance quadrature voltage-controlled oscillator(QVCO) is presented.It has been fabricated in SMIC 0.18μm CM......
The importance of high-performance,low-cost and millimeter-wave transmitters for digital communications and radar applic......
A wide band, injection-coupled LC quadrature voltage control oscillator is presented. In the proposed circuit, two oscil......
We demonstrate an indoor 5 m free-space optical wireless coherent communication in mid L-band(1606.7 nm)by employing a t......
We experimentally demonstrate a 16 × 16 reconfigurably nonblocking optical switch fabric using a Benes architecture. Th......
For absorption measurement of large-aperture optical coatings,a novel method of imaging photothermal microscopy based on......
Nonlinear models of transverse vibration of axially moving beams are computationally investigated. A partial-differentia......
A semi-blind adaptive beamforming scheme is proposed for wireless systems that employ high-throughput quadrature amplitu......
A fully integrated VCO and divider implemented in SMIC 0.13-μm RFCMOS 1P8M technology with a 1.2 V supply voltage is pr......
This paper presents a reconfigurable quadrature passive mixer for multimode multistandard receivers.By using controllabl......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Research and test of the adaptive quadrature demodulation technology for silicon micro-machined gyro
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
In this paper,a new type of the discrete fractional Gronwall inequality is developed,which is applied to analyze the sta......
介绍了四元函数的全微分求积的4种不同方法：即空间曲线积分的求法、不定积分求出原函数的方法、全微分方程的分部微分法中的凑微分......
由于各种因素的影响，I／Q通道之间通常会发生失配现象，这会降低接收机的动态范围，进而影响接收机的性能。本文提出了一种宽带接收机中I／Q......
带初值问题的常微分方程数值求解是计算数学的一个重要研究领域。首先通过第二类Chebyshev正交多项式构造了未知函数的级数展开式,......
本文提出的基于径向基函数的微分求积区域分裂法是以径向基函数(RBFs)作为微分求积法(DQM)的基函数,并结合区域分裂法(DDM)提出的,......
针对通信对抗复杂战场电磁环境模拟的要求,设计并实现了一种资源高效利用、样式灵活可变、参数实时可控的多通信信号产生方法.该方......
由模拟器件构成的宽带正交解调接收机会由于正交通道的幅相不一致性造成整个系统的失真,进而影响整个接收系统的性能.本文仔细分析......
图像分割是图像分析的关键步骤,基于阈值的图像分割方法在各领域得到了广泛的应用。在分析图像分割相关背景理论的基础上,针对固定......
主要介绍了如何利用正态分布和正态优化对现有的筛选方法进行优化，从而使优化后的筛选方法在达到预期筛选目的的情况下做到最经济，省......
目前分形图像压缩的最主要问题是其编码时间太长,这主要是因为在分形编码时,对每一个待编码值域块都需要比较数量巨大的定义域块才......
通过对两个相同的LC振荡器进行交差耦合,用耦合系数来控制输出频率,设计了一种新型精准正交正弦波压控振荡器.由于其频率调节方式......
介绍三元函数的全微分求积的4种不同方法：空间曲线积分的求法、不定积分求出原函数的方法、全微分方程的分部微分法中的凑微分法和......
微积分是理工科大学生的一门非常重要的基础课.本文给出了大学微积分中带绝对值符号的函数的极限、导数、积分的求法,并给出了算例......
期刊
对高振荡积分而言，渐近方法只是在求积区间没有驻点时是有效求积方法．本文将这种方法推广到出现驻点的情形，数值实验也显示了这种方法......
介绍了在频域内对载荷谱识别的方法．根据载荷谱的形状特征，采用对频率ω的矩的方法采末解反问题。理论计算算例表明，该方法具有较高的......
为了解决扩频通信体制的通信速率相对较低而无法满足高速高清图像的无线传输通信需要的问题,文中对实现高速基带解调的一项关键技......
精确的屏蔽计算方法是核装置辐射屏蔽设计的重要基础,离散纵标法(SN)是主要的屏蔽计算方法之一。本文基于价值理论的目标导向与角......
提出了一种工作在1．1～1．2GHz的相位准确度高、幅值失配度低的正交LO驱动电路。它主要由高频放大器、二阶的无源多项滤波器、相位和幅......
The local buckling of stiffened panels is one of possible failure modes and concerned by engineers in the preliminary de......
提出一种新的低压正交压控振荡器（QVCO）结构，该结构由两个完全相同的低压压控振荡器经过背栅耦合方式实现．背栅耦合方式使压控振荡器实......
研究叠加相干态的方差压缩与熵压缩,讨论了方差压缩、熵压缩与相干参数的幅角δ的关系,并对两者进行比较.......
根据感应测井仪的刻度原理,导出了HRI测井仪同相和正交电导率分量分别与刻度环感抗和串接电阻之间的关系表达式,得出了该仪器的最......
A generalized Gauss-type quadrature formula is introduced, which assists in selectionof collocation points in pseudospec......
We have studied quantum statistical properties of the exciton in a leaky quasi-mode cavity. It is shown that when the ex......
We have investigated quantum statistical behaviors of photons and atoms in interaction of an atomic Bose Einstein conden......
为了得到颗粒聚团对旋风分离器分离性能的影响，在不同入口颗粒浓度与入口气速下研究其对分离效率的影响。采用雷诺应力模型（RSM）计算......
The aim of this work is to construct a new quadrature formula for Fourier-Chebyshev coefficients based on the divided di......
The main purpose of this work is to find for any non-negative measure,the relations betweent the Gauss-Radau and Gauss-L......
In this work,we develop an efficient iterative scheme for a class of nonlocal evolution models involving a Caputo fracti......
