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- double down converter 二次下变频器
- The receiver unit mainly consisted of the digital down converter, matched filter, differential demodulator and AFC module. 接收子系统包括下变频模块、匹配滤波器模块、差分解调模块、自动频率控制模块。 论文列出了部分模块的VHDL程序，还给出了各个模块的功能和时序仿真。
- In this paper, a new structure of Coordinate Convert Module in Digital Down Converter is presented which is based on CORDIC algorithm. 本文介绍了一种基于CORDIC算法的数字下变频器(DDC)中坐标变换模块的结构以及该结构的ASIC实现。
- People gamble away fortunes on money-losing hunches or double down when logic says to fold. 然后媒体开始报道，说小人物在牛市做的很好。
- Short-term, CPI, PPI double down on the A-share market may have a negative impact. 短线来看，CPI、PPI双降可能对A股市场产生不利影响。
- The design of hardware module includes A/D converter, DDC (Digital Down Converter) and DSP. The design and application of AD6640 and AD6624 are fully discussed in this part. 模块的硬件设计主要包括：A/D转换器、数字下变频器(DDC)以及DSP，详尽讨论了A/D器件AD6640和DDC器件AD6624的设计和应用；
- An inning later, Jose Valentin laced a clean double down the line, but really the game was a done deal by then. 在一局过后，JoseValentin又打出一支二垒安打，但说真的，其实球赛差不多己经知道结果了。
- The RF down converter used with the direct digital synthesizer uncouples tuning speed from phase noise creating the fastest and highest performance tuner on the market. 由于采用了直接数字合成去耦调谐速度的射频下变频，避免了相位噪声，也创造了市场上最快的速度和最高的性能。
- The Cascade integrator comb filter (CIC) has played an important role as an interpolating and low pass filter in the Digital Down Converter (DDC) of software radio. 在软件无线电的下变频模块中,级联梳状积分滤波器有着重要的应用,其主要作用是信号的抽取与低通滤波。
- Hernandez walked Bobby Abreu and Jason Giambi lined a ground-rule double down the rightfield line, plating Jeter and making it 6-0. 赫南德兹保送了阿不累唷，然后技安一记沿著右外野边线的场地二垒安打护送基特得分，让比数拉开到6比0。
- Shop for seven brackets, double down dual under Aung, Aung Penny for the grant type, Aung pressure in four rafter tail hypodermal bundle wrapped in cloth. 斗拱七铺作，双抄双下昂，昂为批竹式，昂尾压在四椽袱下皮。
- The design of hardware module includes A/D converter, DDC (Digital Down Converter), DUC(Digital Up Converter) and DSP. The design and application of AD6640 and AD6624 are fully discussed in this part. 收发信机硬件设计主要包括：A/D、D/A转换器、数字下变频器(DDC)、数字上变频器(DUC)以及DSP，论文详尽介绍了A/D器件AD6640、DDC器件AD6624和DSP器件TMS320C5410的设计和应用；
- This paper studies the design of digital down converter based on coordinate rotation digital computer (CORDIC) algorithm , the method can improve the efficiency of signal processing, reduce the design cost of hardware. 尝试了将CORDIC算法，应用于数字下变频的数控振荡器设计中，可提高运算效率，节省硬件资源，并对基于CORDIC算法的数字下变频，进行了仿真分析。 探讨了软件无线电中的多速率信号处理技术，重点分析软件无线电中的带通信号正交多相抽取结构；
- Data after AD sampling and digital down converter transfer to computer through PCI bus interface, while base-band signal processing may choose COTS DSP board or general high-performance PC in term of the need. AD采样、数字下变频后的数据通过PCI接口传入计算机，基带处理可视需要选用多种商用DSP处理板，或选用高性能PC机。
- Digtal DownConverter is one of the core technologies of software radio, this paper introduces the principle of Digtal Down Converter, and discuss the realizable method based on FPGA in detail. 摘要数字下变频技术是软件无线电的核心技术之一，本文首先介绍了数字下变频器的原理，然后主要讨论了基于FPGA的数字下变频实现方法。
- In that frame, Ichiro Suzuki laced a one-out double down the left-field line and scored on Raul Ibanez's two-out hit to right, ripped on a hanging curveball off the glove of first baseman Josh Phelps. 三局下，一出局后，铃木一朗先击出紧靠左外野边线的二垒安打，随后艾凡捏兹击出的球擦过一垒手费尔普斯的手套，将铃木一朗送回本垒。
- It include CDMA LNA , CDMA Down Converter , LO Output , Buffer , RF Input and MAX2385/MAX2386 include an on-chip LO divider , which enables the use of one VCO module for both cellular and GPS modes. MAX2385/MAX2386有7种作模式.;芯片内包含:CDMA低噪声放大器，CDMA下变频器，LO输出缓冲器，RF输出;并且MAX2385/MAX2386具备一个片内LO分频器，允许蜂窝和GPS模式共用一个VCO模块。
- Rafael Benitez paid tribute to Dirk Kuyt after the Dutchman's double downed Tottenham Hotspur at Anfield on Wednesday evening. 在周三晚上安菲尔德迎战热刺的比赛中荷兰人梅开二度，赛后拉法-贝尼特斯盛赞库伊特。
- There was another nasty twist: Many accumulators required investors to double down on purchases if shares dropped, buying 2,000 shares instead of 1,000 at a price that now put them in the red. 还有另一个讨厌之处：很多累股合约都要求投资者在股价下跌时双倍买进，也就是说，如果股价下跌，投资者要买进2,000股而不是1,000股，尽管合同规定的价位已使所进行股票投资亏本。
- Wideband Digital SSB Down Converter 宽带数字单边带下变频器
