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Recent content by hjzs18

  1. H

    What is the purpose of post processing in Ansoft designer?

    HI, there, just a newbie question for ansoft designer ,here, i am learning this SW by examples, In one of them, the procedure is, after setting the port, i am asked to set port excitation post process. In the dialogbox, I am asked to check the ports and check "Gap source". What is the...
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    questions in Network synthesis

    Hi all: Soppose i have a lossless two-port, why is it that the transfer impedance Z21 of this network is an odd function? Anyone here can give me a proof? Another question. suppose k11 k22 and k12 are the residues of some rational functions Z11 Z22 and Z12, respectively. Then...
  3. H

    Perfect H on top of Perfect E

    Hi there: What is the effect if I first assign a plane as Perfect E and then assign a portion of that plane as Perfect H??? TIA.
  4. H

    Ansoft designer , signal and metalizedsignal

    Hi there, What is the difference between the layer type "signal" and "metalizedsignal"?? TIA
  5. H

    Where to get PDKs for ADS?

    Hi, there, I need PDKs for ADS, how to get them? TIA.
  6. H

    How to add model file to ADS

    where can i get pdk? is that free?
  7. H

    A trivial question on the Razavi's Book "RFMicroelectro

    HI teteamigo & Tyassin I still dont get it. Can you show me your derivation here, or the specific approach you use to compute the output resistance? Thanks
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    little problems In Razavi's microelectronics

    Hi guys: I am reading Razavi's Microelectronics now, I got two problems in Chapter 6 , and think maybe here i can get some useful help. :) 1. In equation (6.3), where does the 12dB of the output SNR system required come from? 2. How does the loss of the image-reject filter...
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    Driving Point function and Transfer function

    HI there, we all know that all the zeros and poles of a driving point function is the pole of transfer function of a network, i just wonder is there any formula for how to manipulate those poles in a transfer function to get a driving point function? E.g. Soppose i know the transfer function...
  10. H

    Attenuation pole or Transmission Zero

    attenuation pole transmission zero Thank you radiohead SO these two terms are identical, and i can use them interchangably.
  11. H

    Attenuation pole or Transmission Zero

    what is attenuation pole Hi , there, I wonder these two terms are identical ? am I right ? If true, then why one is called pole and the other is called zero ? If i am wrong? Can anyone here tell me the difference between these terms?? TIA
  12. H

    Port and its terminal line in HFSS

    Hi, there Can anybody here give me a clear explaination or referrence on the difference between the Wave port and Lump port ? Also, what is the purpose of Terminal line ? why do i have to tell HFSS the line? what is the relation between these lines and the Excitations?? Thanks a lot
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    How to add model file to ADS

    Hi there, I wonder in ADS if I can specify a model file for it to use , just like In Cadence . If so , how can i do this?
  14. H

    A trivial question on the Razavi's Book "RFMicroelectro

    Re: A trivial question on the Razavi's Book "RFMicroele can guys there help me see this?
  15. H

    How to get gm, gm*ro.etc when I am sweeping the Vov

    Thx Holddreams: I want to see the curve gm/Id versus Vov, how can i set up the simulation to do this??
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