Filter-Bank-Based

Digital Down Converter Design based on FPGA

Digital Down Converter Design based on FPGA.

标签： Converter Digital Design based

上传时间： 2013-08-13

上传用户：CSUSheep
fpga based jpge 压缩算法

fpga based jpge 压缩算法，性能不错，

标签： based fpga jpge 压缩算法

上传时间： 2013-08-13

上传用户：a471778
FPGA-based link layer chip S19202 configuration

FPGA-based link layer chip S19202 configuration

标签： configuration FPGA-based S19202 layer

上传时间： 2013-08-18

上传用户：xsnjzljj
Run Pac-man Game Based on 8086/8088 FPGA IP Core

Run Pac-man Game Based on 8086/8088 FPGA IP Core

标签： Pac-man Based Game 8086

上传时间： 2013-08-22

上传用户：JamesB
一篇关于CORDIC的文章A survey of CORDIC algorithms for FPGA based computers

一篇关于CORDIC的文章A survey of CORDIC algorithms for FPGA based computers

标签： CORDIC algorithms computers survey

上传时间： 2013-08-30

上传用户：lliuhhui
Median Filter 在FPGA中的实现

Median Filter 在FPGA中的实现

标签： Median Filter FPGA 中的实现

上传时间： 2013-08-31

上传用户：bensonlly
something useful for communication,source code based on FPGA

something useful for communication,source code based on FPGA

标签： communication something useful source

上传时间： 2013-08-31

上传用户：maizezhen
On the design of an FPGA-Based OFDM modulator for IEEE 802.11a

On the design of an FPGA-Based OFDM modulator for IEEE 802.11a

标签： FPGA-Based modulator 802.11 design

上传时间： 2013-09-02

上传用户：zjwangyichao
开关电源EMI设计(英文版)

Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This work presents the modeling and analysis of EMI and thermal performancefor switch power supply by using the CAD tools. The methodology and design guidelinesare developed.By using a boost PFC circuit as an example, an equivalent circuit model is builtfor EMI noise prediction and analysis. The parasitic elements of circuit layout andcomponents are extracted analytically or by using CAD tools. Based on the model, circuitlayout and magnetic component design are modified to minimize circuit EMI. EMI filtercan be designed at an early stage without prototype implementation.In the second part, thermal analyses are conducted for the circuit by using thesoftware Flotherm, which includes the mechanism of conduction, convection andradiation. Thermal models are built for the components. Thermal performance of thecircuit and the temperature profile of components are predicted. Improved thermalmanagement and winding arrangement are investigated to reduce temperature.In the third part, several circuit layouts and inductor design examples are checkedfrom both the EMI and thermal point of view. Insightful information is obtained.

标签： EMI 开关电源英文

上传时间： 2013-11-10

上传用户：1595690
基于开关电容技术的锁定放大器设计

锁定放大是微弱信号检测的重要手段。基于相关检测理论，利用开关电容的开关实现锁定放大器中乘法器的功能，提出开关电容和积分器相结合以实现相关检测的方法，并设计出一种锁定放大器。该锁定放大器将微弱信号转化为与之相关的方波，通过后续电路得到正比于被测信号的直流电平，为后续采集处理提供方便。测量数据表明锁定放大器前级可将10-6 A的电流转换为10-1 V的电压，后级通过带通滤波器级联可将信号放大1×105倍。该方法在降低噪声的同时，可对微弱信号进行放大，线性度较高、稳定性较好。 Abstract: Lock-in Amplifying（LIA）is one of important means for weak signal detection. Based on cross-correlation detection theory， switch in the swithched capacitor was used as multiplier of LIA， and a new method of correlation detection was proposed combining swithched capacitor with integrator. A kind of LIA was designed which can convert the weak signal to square-wave， then DC proportional to measured signal was obtained through follow-up conditioning circuit， providing convenience for signal acquisition and processing. The measured data shows that the electric current（10-6 A） can be changed into voltage（10-1 V） by LIA， and the signal is magnified 1×105 times by cascade band-pass filter. The noise is suppressed and the weak signal is amplified. It has the advantages of good linearity and stability.

标签： 开关电容锁定放大器

上传时间： 2013-11-28

上传用户：黑漆漆