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  1. Concave Gratings for Astronomical

  2. Concave gratings possess a number of characteristics which should make them of interest to earth-bound stellar spectroscopists. Evaluation of a number of specific spectrograph and spectrometer designs indicates that concave grating instruments can b

  3. 所属分类：其它

    • 发布日期：2009-09-24
    • 文件大小：1048576
    • 提供者：ZEMAX

  1. 一种程控增益宽带射频放大器的设计与实现

  2. 一种程控增益宽带射频放大器的设计与实现 张宝玲，李晓波 (装备指挥技术学院，北京101416) 摘要： 程控宽带射频放大器是基于同步脉冲转移原理的有线电视机顶盒的最重要的电路之 一。介绍了一种程控射频宽带射频电路的设计与实现方法。该电路设计巧妙，原理简单，生产、调试与 维修都非常方便。实践证明该电路工作良好，性能优良。 关键词： 射频；宽带；放大器；程控增益 中图分类号： TN948 文献标识码： A Design and implement of a program controlled g

  3. 所属分类：专业指导

    • 发布日期：2010-03-08
    • 文件大小：294912
    • 提供者：darthing

  1. ADL5380 英文资料

  2. FEATURES I/Q Demodulator RF frequency 400 MHz to 6000MHz IIP3 +31 dBm IIP2 +60dBm Input P1dB +12dBm NF 13.2 dB @ 2.5GHz Voltage Conversion Gain of 4dB Quadrature demodulation accuracy Phase accuracy <0.5° Amplitude balance <0.25 dB LO Input –1

  3. 所属分类：3G/移动开发

    • 发布日期：2010-05-20
    • 文件大小：12288
    • 提供者：xiaoming8888

  1. DVB-S2 The Second Generation Standard for

  2. DVB-S2 is the second-generation specification for satellite broad-band applications, developed by the Digital Video Broadcasting (DVB) Project in 2003.

  3. 所属分类：VB

    • 发布日期：2010-10-08
    • 文件大小：1048576
    • 提供者：heretoday

  1. A simple “clear water” atmospheric correction algorithm for Landsat-5 sensors

  2. In this study, an atmospheric correction algorithm (improved “clear water” atmospheric correction algorithm for broad-band sensors, or “ICAB” algorithm) was constructed and tested, and the results are shown in this paper. The Rayleigh scattering con

  3. 所属分类：专业指导

    • 发布日期：2013-08-22
    • 文件大小：830464
    • 提供者：chenjun1982

  1. A New Class of Broad-Band Microwave 90~De~ree

  2. Broad-Band Microwave

  3. 所属分类：专业指导

    • 发布日期：2014-05-27
    • 文件大小：519168
    • 提供者：doraeeemon

  1. [1]Plasma Wave Electronics 1996

  2. Abstruct- We discuss how the propagation of plasma waves in a High Electron Mobility Transistor (HEMT) can be used to implement a new generation of terahertz devices, including sources, resonant detectors, broad band detectors, and frequency multipl

  3. 所属分类：其它

    • 发布日期：2015-04-29
    • 文件大小：645120
    • 提供者：nkkhh

  1. Measuring Low Cross Polarization Using a Broadband Log Periodic Probe.doc

  2. There are a number of near-field measurement situations where it is desirable to use a broad band probe to avoid the need to change the probe a number of times during a measurement. But most of the broad band probes do not have low cross polarizatio

  3. 所属分类：电信

    • 发布日期：2015-05-12
    • 文件大小：877568
    • 提供者：tuotuo1011

  1. 华为认证3COM课程

  2. 数据(Data)：传递(携带)信息的实体。 信息(Information)：是对数据内容的表达或解释。 信号(Signal)：数据的物理量编码(通常为电编码)，数据以信号的形式传播。 模拟信号与数字信号 基带(Base band)信号与宽带(Broad band)信号

  3. 所属分类：华为认证

    • 发布日期：2015-08-06
    • 文件大小：6291456
    • 提供者：zf_kedacom

  1. Fabrication of two-dimensional metallic photonic crystals with one-dimensional periodicity, broad-band plasmonic respons

  2. 具有一维周期的偏振不敏感宽带等离子共振二维金属光子晶体的制备，刘红梅，张新平，本文利用优化的溶液法制备了一维金属纳米岛阵列组成的金属光子晶体。在此方法中，高温退火过程被用于剥离光刻胶模板，并且被用于

  3. 所属分类：其它

    • 发布日期：2019-12-29
    • 文件大小：394240
    • 提供者：weixin_38678773

  1. TI高精度实验室-噪声 2.pdf.pdf

  2. TI高精度实验室-噪声 2.pdfpdf,TI高精度实验室-噪声 2.pdf1k Noise Gain) Referred te Output R1 1k U1 OPAI了 1 W±v5 Noise Source 中 TEXAS INSTRUMENTS o a key concept that we must understand before doing a noise analysis is noise gain noise gain is the gain seen by the nois

  3. 所属分类：其它

    • 发布日期：2019-09-14
    • 文件大小：1007616
    • 提供者：weixin_38744207

  1. 2015-2016网络支付能力报告_EN.pdf

  2. 2015-2016网络支付能力报告_EN.pdfww.a4aL org CONTENTS Executive summary nd afford able access to Introduction thc Internet: Thc current picture ++m-mm…mm 4.2 USing smart policy to close the gender 2 The Affordability Drivers Index(ADI) digital divice and achi

  3. 所属分类：互联网

    • 发布日期：2019-07-08
    • 文件大小：1048576
    • 提供者：qq_34543438

  1. Widely tunable all-optical wavelength converter based on four-wave mixing using two orthogonally polarized pumps

  2. The principle of broad-band orthogonal-pump (BOP) four-wave mixing in semiconductor optical amplifiers is analyzed in theory. The conversion efficiency reduces rapidly as the detuning of wavelength between the signal and pump increase which can be so

  3. 所属分类：其它

    • 发布日期：2021-02-11
    • 文件大小：487424
    • 提供者：weixin_38740596

  1. Bias phase and light power dependence of the random walk coefficient of fiber optic gyroscope

  2. Taking account of shot noise, thermal noise, dark current noise, and intensity noise that come from broad band light source, the dependence of the random walk coefficient of fiber optic gyroscope (FOG) on bias phase and light power is studied theoret

  3. 所属分类：其它

    • 发布日期：2021-02-11
    • 文件大小：155648
    • 提供者：weixin_38744526

  1. A novel design for broadband dispersion compensation microstructure fiber

  2. A novel microstructure fiber (MF) structure is proposed for broadband dispersion compensation. Through manipulating the four air-hole parameters and the pitch, the broad band dispersion compensation MF can be efficiently designed. The newly designed

  3. 所属分类：其它

    • 发布日期：2021-02-11
    • 文件大小：281600
    • 提供者：weixin_38685832

  1. Combined front diffraction and back blazed gratings to enhance broad band light harvesting in thin film solar cells

  2. Combined front diffraction and back blazed gratings to enhance broad band light harvesting in thin film solar cells

  3. 所属分类：其它

    • 发布日期：2021-02-10
    • 文件大小：757760
    • 提供者：weixin_38721398

  1. Broad band ultrafast response vertical phototransistors based on perovskite / quantum dot hybird

  2. Broad band ultrafast response vertical phototransistors based on perovskite / quantum dot hybird

  3. 所属分类：其它

    • 发布日期：2021-02-08
    • 文件大小：280576
    • 提供者：weixin_38674115

  1. Nano-bio hybrids of plasmonic metals/ photosynthetic proteins for broad-band light absorption enhancement in organic sol

  2. Nano-bio hybrids of plasmonic metals/ photosynthetic proteins for broad-band light absorption enhancement in organic solar cells

  3. 所属分类：其它

    • 发布日期：2021-02-06
    • 文件大小：2097152
    • 提供者：weixin_38690508

  1. NEAR-INFRARED, BROAD-BAND SPECTRAL IMAGING OF THE HUMAN BREAST FOR QUANTITATIVE OXIMETRY: APPLICATIONS TO HEALTHY AND CA

  2. We have examined ten human subjects with a previously developed instrument for near-infrared diffuse spectral imaging of the female breast. The instrument is based on a tandem, planar scan of two collinear optical fibers (one for illumination and one

  3. 所属分类：其它

    • 发布日期：2021-02-06
    • 文件大小：771072
    • 提供者：weixin_38527987

  1. Wide band polarizer with suspended germanium resonant grating

  2. An ultra broad band polarizer that operates in the telecommunication wavelength band is proposed. This device, which consists of a single suspended germanium resonant grating layer, is designed using the inverse mathematical method and the rigorous v

  3. 所属分类：其它

    • 发布日期：2021-02-06
    • 文件大小：277504
    • 提供者：weixin_38623080
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