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。
Because the glucose in refined form such as crystalline form or as syrup form is more expensive, glucose in fermentation medium is mostly produced by direct enzymatic conversion of starch.
因为葡萄糖有晶体结构或糖浆结构的精巧结构使它更昂贵，葡萄糖在发酵培养基中是主要的产物，通过直接糖化酶转化淀粉得到。
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 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。
We find that for our toroidal current antenna, there may exist two ways of excitation, i. e. direct excitation and excitation through the electrostatic mode conversion process.
对纵环电流天线，可能存在静电模转换激发和直接激发这两种离子伯恩斯·坦波激发方式共存的情况。
This is a direct use of solar radiation to decompose water hydrogen which called light - chemistry conversion way.
这是一种利用太阳辐射能直接分解水制氢的光-化学转换方式。
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。
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。
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。
Ultra hard polycrystalline diamond can be synthesized from graphite by direct conversion under static high pressure.
通过静压法中的直接变换法，纯净的多晶石墨棒可以在短时间内转化为多晶金刚石。
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。
This direct conversion receiver can eliminate the need for intermediate frequency (IF) signal processing, as well as the corresponding requirements for image filtering and IF filtering.
这种直接转换接收器能够免除进行中频(IF)滤波的需要。
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。
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。
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 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。
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。
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。
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 DC/AC conversion section converts a direct current inputted from a direct current power source into an alternating current, and outputs the alternating current.
该DC /AC转换部分直接转换为电流输入由直流电源成交流电，并输出交流电。
A direct harmonic analysis approach for AC-DC-AC conversion system was presented to simplify the complicated harmonic calculation process.
为了简化ac - DC - AC变换器复杂的谐波计算过程，采用直接谐波计算对变换器进行了谐波分析。
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。
Direct Torque Control (DTC) of induction motor based on DSP is new technology of high performance AC — frequency conversion — rate of regulation.
基于DSP的电动汽车用交流电机的直接转矩控制是电机高性能交流变频调速的新技术之一。
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？
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？
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