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书籍 Baseband+Receiver+Algorithms
The growing interest for high data rate wireless communications over the last few decades
gave rise to the emergence of a number of wideband wireless systems. The resulting scarcity
of frequency spectrum has been forcing wireless system designers to develop methods that
will push the spectral effici ...
书籍 Opportunistic+Spectrum+Sharing
Rapid growth of wireless communication services in recent decades has created
a huge demand of radio spectrum. Spectrum scarcity and utilization inefficiency
limit the development of wireless networks. Cognitive radio is a promising tech-
nology that allows secondary users to reuse the underutilized ...
书籍 Radio Wave Propagation
One of the prerequisites for the development of telecommunication services is the
understanding of the propagation of the waves, either acoustic, electromagnetic,
radio or light waves, which are used for the transmission of information.
In this work, we shall limit ourselves to the study of radio wa ...
论文 CMOS MEMS_ A KEY TECHNOLOGY
The mature CMOS fabrication processes are available
in many IC foundries. It is cost-effective to leverage the
existing CMOS fabrication technologies to implement
MEMS devices. On the other hand, the MEMS devices
could also add values to the IC industry as the Moore’s law
reaching its limit. The CM ...
书籍 POWERHVMOS_Devices_Compact_Modeling
The continuous progress in modern power device technology is increasingly
supported by power-specific modeling methodologies and dedicated simulation
tools. These enable the detailed analysis of operational principles on the the device
and on the system level; in particular, they allow the designer ...
技术资料 XR2981
2.7V to 5.5V input voltage Range Efficiency up to 96%
24V Boost converter with 12A switch
current Limit 600KHz fixed Switching Frequency Integrated soft-start Thermal Shutdown Under voltage Lockout Support external LDO auxiliary power
supply 8-Pin SOP-PP PackageAPPLICATIONSPorta ...
技术资料 PW4055_2.0.pdf规格书下载
The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specif ...
技术资料 PW1555-2.0.pdf规格书
PW1555 is a programmable current limit switch with input voltage range selection and outputvoltage clamping. Extremely low RDS(ON) of the integrated protection N-channel FET helps toreduce power loss during the normal operation. Programmable soft-start time controls the slew rateof the output voltag ...
技术资料 基于AT89C52的农业温湿度智能控制系统设计
设计了农业温湿度智能控制系统,该系统采用DHT11温湿度传感器作为温湿度采集模块,单片机选用AT89C52代替并调用Virtual terminal模拟串口通信,LCD1604液晶显示器实时显示温湿度,实现了温湿度的测量、显示,可自动控制加热、降温、加湿、通风,实现温湿度控制以及超限报警处理,并利用Proteus与Keil进行实际电路的仿真。试验表明, ...