1、

In this paper, error of quadrature vector detector used in direct converting receiver is analyzed and performance deterioration caused by gain error, phase error, local oscillation leak or DC offset on receiver's inphase and quadrature channels is discussed.

本文对直接变频接收机中正交矢量检测法进行了误差分析,讨论了由于接收机同相与正交两支路的增益差异、相位误差、本振泄漏及直流偏置导致其性能恶化的结果。

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2、

Methods for the realization of the radio front end, the quadrature converter and baseband processing are given, with the accuracy of quadrature phase 90 ° and equality of the inphase and quadrature signal gains being key factors.

给出了零中频接收机射频前端、正交变频和基带处理的实现方法,其中正交90°移相的准确性和正交两路输出放大器增益的一致性是关键。

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3、

The log-periodic dipole antenna is a linearly polarized frequency independent antenna of moderate gain.

对数周期偶极天线属于一种具有平稳增益和宽广频宽的线性极化天线.

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4、

Another male teacher, named Liao Zhengyi, came later.

后来又调来一名男老师,叫廖增益。

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5、

This model was used to analyze gain-clamping characteristic and the extinction ratio of wavelength-converted signal.

使用该模型分析了增益钳制特性和转换后信号的消光比.

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6、

The simulation results indicate that subband coding gains can be markedly improved.

仿真结果表明子带编码增益显著提高.

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7、

The two type antennas are fabricated by the use of Protel software and PCB technology, and are tested the antenna gain and patterns in the microwave unreflected chamber.

用Protel软件和印制电路板技术将设计的两款天线加工成型,在微波暗室中测试了天线的增益和方向图。

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8、

The exponential gain, the diffractive efficiency, the response time, photoconduction and signal to noise ratio or the crystals were measured.

测试晶体的指数增益系数、衍射效率、响应时间、光电导和信噪比。

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9、

System gain of multi-channel Wiener filter

多通路维纳滤波器的系统增益

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10、

The form of superheterodyne receiver is used, and a reasonable conversion gain distribution is designed.

接收机采用了超外差的方式,合理地设计了各次变频增益的指标分配。

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11、

Based on the concept of control information structure, design of the excitation controller is formulated into the optimal control problem with a given information structure. Then the method of minimum erratum excitation is extended to solve this problem and find the feedback gain matrix.

首先基于信息结构的概念,将控制器的设计转化为特定信息结构下的最优控制问题,然后将推广的最小误差激励法用于该问题的求解,从而求出反馈增益矩阵。

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12、

We researched and compared the feature of fixed quantizing and adaptive quantizing.

对增益量化,研究比较了固定量化与自适应量化的特性。

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13、

The separated scaling of both scale factor and circuit gains isn t beneficial to mass production.

全数字开环光纤陀螺的标定参数包括刻度因素与电路增益,二者分开标定不利于批量化生产.

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14、

Spatial gain analysis of pressure gradient hydrophone based on general signal processing principles

用信号处理的一般原理分析压差水听器的空间增益

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15、

The results show that better gain factor can be gotten with relatively low nuclear heating.

结果表明:在核发热量较小的条件下获得了较好的冷中子增益.

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16、

The gain or loss on sale of the long-lived asset.

在拍卖中长命的资产增益或损失.

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17、

Solid-state Drive Amplifier ( SSA) supplies driven power for the Travelling Wave Tube ( TWT) and equalizes its gain curve in the power module; it does have significant research meaning.

固态驱动放大模块在微波毫米波功率模块中为后级行波管提供驱动功率,并对其增益曲线进行幅度均衡,具有重大研究意义。

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18、

To achieve a suitable gain level , this demand power pump is unavoidable.

为了达到适宜的增益, 此一需求实无法避免.

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19、

A voice-grade transmission facility with defined frequency response, gain and bandwidth.

信道是指一种话音级传输设备,定义了频率响应 、 增益和带宽.

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20、

Keeping full diversity order gain, the design can achieve 0.5 transmission rate.

该方案保证系统获得满分集度增益情况下, 实现码率为0.5的传送指标.

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