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    About Group Delay of the LNA

    Hi all, I designed an LNA in 2.2-4.4GHz band and calculated the group delay using: Group Delay = -[d S21(p)]/[360*d f], where S21(p) is the phase of the S21 and f is the frequency. The plot is attached herewith. I found that, my grpup delay varies in between .045-.065ns in the bandwidth. Now...
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    spice model of carbon nano wire/tube: reliability issue

    Hello, Can anyone please comment on the reliability of the spice models of carbon nano wire/tube? Spice simulators calculate the current through the mos devices using the drift-diffusion equations. So, I think, the spice models of carbon nano wire/tube are based on the approximation of their i-v...
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    Assura41 error"Failed to build VDB."No problem in

    Re: Assura41 error"Failed to build VDB."No problem and you can check one more thing. I get this kind of problem with ibm pdk when i forget to select a switch for the I/O pad like "INLINE_PAD or C4_3on6 or C4_4on8 or C4_4on9 or C4_5on10". I am not sure whether it will work for your pdk, too...
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    Assura32- Compatibility with Cadence IC612

    Thank you oermens, for your reply. In fact, I did not install Assura32 but have planned to use it :). So, I was seeking for the information- 'up to which subversion of it is compatible with IC612'. I installed Assura41 and the problems I mentioned were for it (probably I would better be a...
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    how to simulate the lineartiy of amplifier in cadence?

    Hi Chichi! I designed a few amplifiers in my Undergrad Thesis, where the measure of the linearity was very important for me. I measured it by two methods: 1. 1dB compression point- input power for which the gain of the amplifier degrades by 1dB as the input power increases from a very small...
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    Assura32- Compatibility with Cadence IC612

    Hi! Could anyone please mention up to which subversion of Assura32 is compatible with Cadence IC612? I mean USR1, USR2 etc. I installed Assura41 and tried to use it together with the IC612, but it generated a warning in the CIW, like: *WARNING* Failed to load context file...
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    Environment setting for Cadence IC610

    I included the variables in my .cshrc files and ran clean ...
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    About the Installscape for installing Cadence Virtuoso

    Thank you nafraf for your reply, I re-downloaded the cd and found it there. Thanks for your info ..
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    Environment setting for Cadence IC610

    Thank you, Erikl for your reply. In fact, I found some experienced people suggesting to use csh rather than bin/bash. So, I was a little bit reluctant to go for bsh. However, I shall append the following lines to my .cshrc file leaving my license.dat untouched: setenv CDS_ROOT...
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    Environment setting for Cadence IC610

    Hi! I am trying to install cadence IC610 in Scientific Linux 5. I installed it successfully through Installscape and also installed the Open Access, configured as well after the installation. First two lines of my license file are: SERVER SERVER.VLSI-LAB ANY 27000 DAEMON cdslmd...
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    About the Installscape for installing Cadence Virtuoso

    Hello all; I am trying to install Cadence IC610 for the first time. When I start the installation process typing ./SETUP.SH from the directory of BASE_IC610, it prompts a message suggesting to install the InstallScape. But I found this package nowhere in my CD. Anyone please tell me whether it...
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    About the Cadence Installation Packages

    Hello all, I am trying to install Cadence Virtuoso for the first time. I intend to install IC6.1.2, to simulate with spectre and to use Assura for the layout. Could anyone please check me what software packages shall I be needing to cover my objective? So far I know, I have to install- 1...
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    About the inductor of IBM cms9flp

    Thank you oermens for your reply, I created my library from the ibm_pdk drop down window and used the correct metal stack. Even I can use symmetric parallel inductor without any problem. That is what makes me perplexed ...
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    About the inductor of IBM cms9flp

    Hello, I am in confusion about the symmetric inductor of IBM cms9flp. When I use it in my layout created by pcell, then a square sized box appears only with a blinking message -"unsupported stack", until the 'default' key is clicked in the 'create instance' box. When the 'default' is clicked...

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