[仿真]Frequency Domain Analysis of RF and Microwave Circuits Using SPICE

Abstruct- The SPICE circuit analysis program has limited Fgx{ s%&-  
math capability and, in general, cannot be used for RF and eP d  
microwave simulation because complex arithmetic is required to (=2-*((&(A  
compute S-parameters from node voltages. This paper presents -8HK_eQn  
two models of a directional coupler that can be used to obtain h
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node voltages proportional to incident, reflected, and transmitted scf.>K2  
signals. These models are based on a previously developed pyvH [  
multiple coupled transmission line (MTL) SPICE model. From eb6Ux  
SPICE computed node voltages, S-parameters are computed <Km ^>9  
using the math capability of the PSPICE post processor, PROBE, )\S3Q  
as an example for a low-pass filter consisting of transmission line U$*AV<{%   
sections. The results of this example are compared with another QKW\z aG  
high-frequency circuit analysis program, TOUCHSTONE. The dRdI('  
difference between the results of these two programs in magnitude DFgQ1:6[  
was less than 0.005 and in phase was a few tenths of a degree. 6:fHPlqW  
By using these couplers to simulate a network analyzer, RF and ~[_u@8l!mN  
microwave analysis can be made with SP .. :3J0Q  
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好东西，不客气收藏啊

shoucang le

好东西，不客气收藏啊

不知道是什么东东？下了看看。。