Following the RX signal path, low noise amplifiers, mixer topologies and base band filters are presented.
跟随着RX信号路径，我们会依次讲解低噪声放大器，混频器拓扑和基带滤波器。
The demo system herein consists of three parts: base band transmitting board, baseband receiving boards and MPU board.
实验验证系统由基带发送、基带接收、主控三部分构成。
The purpose of this paper is to meet this need, that is to design a base band signal generator based on WCDMA downlink.
本论文的目的就是设计一个基于WCDMA下行链路的基带信号发生器。
This article has designed an elliptic low pass filter for the generation of base band signals in a wideband chirp source.
对宽带线性调频源中基带信号产生时所用的低通滤波器进行了设计。
AIS system is composed with communication processing module, base band processing module, radio module and interface module.
AIS系统由通信处理模块、基带处理模块、射频模块和接口模块组成。
This paper reports two computerized methods for decoding the digital base band signal obtained from meteorological satellite.
论述利用计算机对气象卫星数字基带信号解码的两种方法。
Typically the interface between these devices (the radio and the base band processor) is an analog in-phase and quadrature (I and q) link.
通常这些器件(射频和基带处理器)间的接口是同向和正交(I和Q)链路。
Since the CMOS technology used in the part of base band design is relatively very mature, it is unreasonable to change the technology of base band.
由于基带部分的CMOS工艺相对来讲已经比较成熟，改变基带部分工艺的可能性和可行性不大。
The spectrum of amplitude modulated signal are two half magnitude spectrums of base band signal positive and negative shifted by a carrier or R. F. frequency.
调幅讯号之频谱为一半强度基频讯号之频谱分别正负位移一射频或载波之频率。
In addition the application of STFT for base band analytic signal based frequency hopping signal recognition, tracking and parameter extraction is investigated.
另外研究了STFT在基于基带解析信号的跳频信号识别、跟踪、以及参数提取中的应用。
The horizontal base band of the vegetation in this area is tropical rain forest and seasonal rain forest. Moreover characteristics of regional distribution and …
保护区植被的水平基带是热带雨林和季雨林，并介绍了水平、垂直分布规律和地域分布特征。
In WCDMA system, downlink base band modulation involves a lot of channels and complex functions, resulting in prolonged time and higher costs for test and verification.
WCDMA中下行链路基带调制信道多，功能复杂，对其测试和验证所花费的时间和费用也随之提高。
According to the well developed Radion Frequency (rf) simulation, the complexity of Base Band (BB) simulation degrades, but unfortunately, the performance degrades too.
在射频频段进行信道模拟的真实性较高但较复杂，在基带进行的信道模拟在复杂度降低的同时，影响了真实性。
Then this paper gives the detail of the base band video signal process system of the Secondary Surveillance Radar, including its system framework, hardware and software parts.
然后本文详细介绍了一种二次雷达基带处理的实现，包括其系统构架、硬件模块和软件模块。
But there is Mosaic impact in the enlarged picture because this method can't adequately attenuate the vertical frequency off the Base Band in the horizontal and vertical direction.
这种方法在对角线方向上的频率响应特性较好，而在水平和垂直方向上对基带外的垂直频谱衰减不够，导致放大图像中的方块效应。
Then we perform digital pre-compensation method, which can be used in the processing of base band signal to reject image frequency and protect carrier leak to meet the application purpose.
然后采用对基带信号的数字预补偿方法来抑制镜像频率和载波泄漏，从而达到应用的目的。
Then we perform digital pre-compensation method, which can be used in the processing of base band signal to reject image frequency and protect carrier leak to meet the application purpose.
其思路是将信号先通过单边带调制，将较低频率调制到需要的频率范围；然后采用对基带信号的数字预补偿方法来抑制镜像频率和载波泄漏，从而达到应用的目的。
These shows brought the band an enthusiastic young fan base and helped make 1954's Jazz Goes to College one of the best-selling jazz records ever released.
这一系列演出为乐队赢得了一群热情年轻人的喜爱和追随，因而1954年的唱片《当爵士走进校园》也成为爵士音乐史上销量最好的唱片之一。
When processing digital base-band, the signal of pilot-frequency was taken out from normal carrier channel and it would be used for transmitting pseudo pilot-frequency.
在数字基带处理时，从正常载频信道中提取出导频信号，用于伪导频的发射。
On the base of a plenty of facts we suggested a method in which bi-Gaussian form is approached the output pulse in multimode fibers The accuracy measuring band in time domain can be improved highly.
在综合大量实例的基础上，提出双高斯函数逼近多模光纤的光脉冲输出的解析近似方法，使时域法确定光纤带宽的精度大为提高。
The architecture of FM quadrature demodulation was provided. On the universal IF digitalization hardware platform, FM waveform was demodulated in base-band together with SSB and FM.
给出了FM正交解调结构，即在统一的中频数字化硬件平台上，与单边带、调幅等波形一起在基带完成正交解调。
SAR echo base-band signal produce module is the key unit of the SAR echo signal simulator, its design affects the performance of the SAR echo signal simulator.
SAR目标回波基带信号产生模块是SAR目标回波模拟器的关键单元之一，其设计影响到模拟器系统的性能。
OFDM can simplify the base-band processing unit of the receiver greatly and can increase the data rate.
OFDM可以使接收机中的基带处理单元大大简化，并且可以提高数据速率。
A new method is proposed to build a micromachined tunable optical filter array on glass base in visible band.
提出一种新颖的采用薄膜技术在玻璃基底上构造微机构可调谐二维窄带滤光片阵列的方法。
And several design ways of making base-band radar signal, modulating arithmetic of several radar signals and the software design architecture of radar signal experimental system are given out.
给出了产生基带波形的几种设计方案以及几种雷达信号调制算法及软件实现设计图。
The reaserch in this paper is on ciruit design of system constructing frame in base-band of DS-UWB.
本文是基于DS-UWB对基带组帧的电路实现进行的研究。
The composing principle of two kind of the predistortion linearization technologies-digital base-band predistortion linearizer and RF predistortion linearizer have been discussed in this paper.
对两种基本型式的预失真线性化技术数字基带预失真和射频预失真的组成原理进行了详尽的分析。
In this paper a fast algorithm for channel estimation in downlink TD-SCDMA systems has been proposed by analyzing the discrete-time base-band transmission model.
本文在分析TD _SCDMA系统下行链路基带离散时间传输模型的基础上，提出了一种下行链路信道估计的快速算法，并结合终端联合检测算法进行了计算机仿真。
In this paper a fast algorithm for channel estimation in downlink TD-SCDMA systems has been proposed by analyzing the discrete-time base-band transmission model.
本文在分析TD _SCDMA系统下行链路基带离散时间传输模型的基础上，提出了一种下行链路信道估计的快速算法，并结合终端联合检测算法进行了计算机仿真。
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