[有源]power amplifier linearization useing a  diode

Abstract- The emphasis on higher data rates and spectral q Rt
gk  
efficiency has driven the industry towards linear modulation d/* [t!  
techniques such as QPSK, 64 QAM, or multi-carrier ZPMX19  
configurations. The result is a signal with a fluctuating envelope `@`Q"J  
which generates intermodulation distortion (IMD) from the 1{u;-pg  
power amplifiers. Since most of the IM power appears as ) d\Se9!  
interference in adjacent channels, it is important to use a highly ,@[Q:fY  
linear power amplifier. This paper describes the novel approach )6!SFj>.O  
of using a diode as an active linearizer in view of minimizing non wRLkO/Fw  
linear distortion introduced by the power amplifiers in wireless }TYCF@  
communication circuits. In case of pHEMTs, this technique W'6*$Ron  
reduces the effect of nonlinear terms generated by the voltage *y`^Fc  
variable input capacitance of the active device. A two stage ty7a&>G  
power amplifier using 0.5μm gate length GaAs pHEMT process Q}]Q0'X8  
shows that the power amplifier is linear up to 5dBm of input
Q&n|tQ*4  
fV;&Ag*ZiV  

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太好了，感谢！正需要这方面的资料呢。

来看看。。。。。。。

太好了，感谢！正需要这方面的资料呢

非常感谢！！！！！！1

非常感谢!!!!!!

好的，感谢，支持

这个好，谢谢

看一看，看一看

看看，先感谢下