A fully integrated direct-conversion digital satellite tuner for DVB-S/S2 and ABS-S applications is presented.
本文设计了一种满足DVB-S/S2和ABS-S标准的全集成直接变频数字卫星调谐芯片。
Based on a direct-conversion architecture, the receiver integrates LNA, I/Q mixer, DC-offset removal filter, baseband amplifier and channel-select filters on a single chip.
基于直接下变频的系统架构，接收机集成了低噪声放大器、I/Q下变频器、去直流偏移滤波器、基带放大器和信道选择滤波器。
This is a direct conversion for all primitive numeric types.
这是所有基元数值类型的直接转换。
The numerical simulation results show that the input pump power and probe power have direct influences on the noise conversion.
结果表明，入射的泵浦光功率及入射的探测光功率的大小对噪声变换有直接的影响。
In the bottom of coal measures is an acidic intrusive body, it is direct heat source of metamorphism, and provided the conversion of lignite to bituminous coal with thermodynamic power.
在本区煤系地层底部有一酸性侵人岩体，该侵入岩体是引起本区煤变质的直接热源，它提供了褐煤向烟煤转化的热动力。
The simulation shows that the direct mass balance control strategy can meet the demand for product purity and conversion effectively and outperform the indirect mass balance control strategy.
结果表明，直接物料平衡方案可满足乳酸提纯过程的质量和转化率的控制要求。
The conversion was finished on the physical layer and the data link layer, and the problem of direct communications between fieldbus and Ethernet was solved.
该网关在网络的物理层和数据链路层完成协议转换，解决了现场总线和以太网无法实现直接通信的问题。
On the basis of the theory of energy conversion, the direct and indirect methods for recovering engine's residual heat are introduced in this paper.
本文以能量转换理论为基础，阐述了内燃机余热利用的两种方式——间接利用和直接利用。
For reference types, an implicit conversion always exists from a class to any one of its direct or indirect base classes or interfaces.
对于引用类型，隐式转换始终存在于从一个类转换为该类的任何一个直接或间接的基类或接口的情况。
It seems that the indirect conversion of natals gas (via syngas), may be more promising than the direct conversion (to olefins or methanols) at least at present.
至少在目前看来，天然气间接转化(即经过合成气)制取各种化学品要比直接转化的方法更显示出前景。
DDS (direct digital synthesis) is a sort of frequency synthesis technique, which has advantages such as short frequency conversion time, high resolution in frequencies, programmability and so on.
直接数字频率合成(DDS)技术是目前广为应用的一项频率合成技术，它具有频率转换时间短、频率分辨率高、可编程等特点。
Traditional Radioisotope micro Battery (RMB) with direct conversion device of single layer array does not meet the requirements of micro sensor devices for its lower output power.
传统同位素微电池的能量转换结构采用单层阵列形式，造成电池输出功率较小，不能满足微型传感器件的需求。
To solve these problems, this paper presents a high performance, namely low voltage, high linearity and high conversion gain, CMOS direct down conversion mixer for UWB (Ultra Wide Band) system.
基于这种背景，本文提出了一种应用于超宽带系统的高性能（低压、高线性度、高变频增益）直接下变频混频器，采用标准的CMOS工艺设计和实现。
So an organic solvent room temperature direct conversion process has been established for the synthesis of semiconductors.
成功地建立了有机溶剂室温直接转化法合成半导体纳米晶。
Psychological research product shows that the factor of emotions has direct influence on reception of teaching contents and conversion of learning motivations.
借助情绪心理学研究成果，提出情绪直接制约教学内容的接受、学习动机的内化等。
Conclusion Risk factors of laparoscopic cholecystectomy conversion to open cholecystectomy can be used to direct clinical works.
结论可以根据转开腹手术的危险因素指导临床工作。
The operation cycle of the catalyst used in conversion at low temperature is critical to the direct economic returns of the enterprises which produce synthetic ammonia.
中温变化催化剂运行的周期长短，是关系到合成氨生产企业直接经济效益的关键因素。
Shape weight is the weight index reflecting varied trunk shape and the direct conversion factor of trunk weight too.
形重是反映不同形状树干的重量指标，同时又是树干重量的直接换算因子。
Is it true that there is no direct conversion between the aperture size (diameter) and meshes of silk screen?
丝网孔度(直径)和目之间是否无法直接换算？
Our findings suggest that direct cell type conversion occurs via successive steps, and that dedifferentiation can occur in the absence of cell division.
我们的发现表明，细胞类型的直接转变是逐步完成的，而且这个去分化的过程能够在无细胞分裂的情况下发生。
A novel contactless energy bi-directional push mode was developed to realize direct conversion between energy transmitter and receiver.
提出一种非接触电能双向推送模式，用于完成电能发射端与接收端的双向直接转换。
Now, researchers at the Perelman School of Medicine at the University of Pennsylvania are the first to demonstrate the direct conversion of a non-heart cell type into a heart cell by RNA transfer.
现在，宾夕法尼亚大学佩雷尔曼医学院的研究人员首次人为地实现由非心肌细胞直接转化成心肌细胞。
The thermoelectric effect is the direct conversion of temperature differences to electric voltage and vice-versa.
热电效应能将温差直接转换成电压，反之亦然。
Major innovation is the power conversion with chopper and controlled converter DC-link in direct current networks.
新加入的是直流路网中用斩波器和中间电路电压可调的功率变换装置。
A kind of xenon lamps stabilizer is designed which is made up of the tripper-circuit with two-leveled rising voltage and the direct current power circuit with frequency conversion mode.
设计了一种由两级升压触发电路及变频式直流电源电路构成的氙灯安定器。
We also choose the type of stable voltage direct current and frequency conversion motor, and design the hardware circuit of the sub-systems.
根据控制要求对直流稳压电源、变频器等其它硬件进行了选型，并对系统各部分硬件电路进行设计。
The mold manufacturing is the key part in imprint lithography process, which includes electron beam direct writing, stepping molding, and the conversion from small mold to big mold.
采用电子束直写、步进制模、压印翻制的压印模具生产工艺，其模具的制造是目前面临的难点。
The 6kv transducer with the series-wound unit of the PWM pressure type can realize the output of the direct high pressure by collecting a lot of lower frequency conversion pressure.
单元串联多电平pwm电压源型6k V变频器采用若干个低压PW M变频功率单元串联的方式实现直接高压输出。
The 6kv transducer with the series-wound unit of the PWM pressure type can realize the output of the direct high pressure by collecting a lot of lower frequency conversion pressure.
单元串联多电平pwm电压源型6k V变频器采用若干个低压PW M变频功率单元串联的方式实现直接高压输出。
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