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 Community Search 

Page 1 of 11 (105 items) 1 | 2 | 3 | 4 | 5 | Next > | Last »
  • Re: RF electrode active water cooling
     Dear Vereth, Tawna's comment is certainly true. However, I happen to have some limited knowledge as my Dad worked for a number of years in a field where they relied heavily on the impedance properties of water. As I am sure you know, "tap water" impedance can vary dramatically depending on its source. Designs that are supposed ...
    Posted to RF Design (Forum) by smlogan on Mon, Aug 18 2014
  • Re: [Help]About the CMFB simulation.
    Dear xxgenerall, > I'm not sure which one is correct, the 1st or the 2nd smulation.   I am not sure if others are experiencing the same problem, but It is very difficult to see any detail in your various JPEG files. I cannot make out the axes of your stability plots and I also can not tell how you are simulating the stability. From ...
    Posted to RF Design (Forum) by smlogan on Mon, Aug 18 2014
  • Re: DC-DC Converter/ Feedback/ Verilog-A
     Dear Pyroblast,   >  Since I don't have yet the feedback part of the control designed, I want to know where I must > put the source component? NOTE: I odn't even know if it's possible to do that, get the bode plot> of the converter > only without the feedback loop.   You are correct. I did ...
    Posted to Custom IC Design (Forum) by smlogan on Fri, Aug 15 2014
  • Re: DC-DC Converter/ Feedback/ Verilog-A
     Dear Pyroblast,  > However, my doubt is where we put that source component.  The best place to include an injection voltage source for stability analysis is a the node where the impedance looking backward (toward the outputof the amplifier) is significantly less than the impedance looking forward (i.e., the feedback path). For ...
    Posted to Custom IC Design (Forum) by smlogan on Fri, Aug 15 2014
  • Re: Design Problem in QVCO
     Dear Vivek1729,   > i also attached a transient response in the end where you can see the negative part of the wave is > not proper due to which oscillation are not getting sustained. I am also thinking that may be Inductor > and Capacitor are not functioning well in the RF region of operation,  I believe your ...
    Posted to Custom IC Design (Forum) by smlogan on Thu, Aug 14 2014
  • Re: Phase noise simulation
     Dear Vishal,  > 1) Is my simulation correct ?  I really can't make that judgement as I do not know the frequency of your phase noise measurement.  A good 10 MHz quartz controlled VCXO might have a open loop phase noise of -150 dBc/Hz at an offset of 100 kHz. This would correspond to a 500 MHz phase noise of -150 + ...
    Posted to RF Design (Forum) by smlogan on Mon, Aug 4 2014
  • Re: Tutorial for absolut beginners on schematic and ADE.
     Dear Runner,  As an absolute beginner, you might consider the following document at URL:http://support.cadence.com/wps/myportal/cos/!ut/p/a0/DcexDoIwEADQb3FwpRVJbWwYSDBx8AOUpWnvDmjAo7YNiX-vb3tiEE8xsNvD5ErY2K3_v5AoroGXd-ArbmByghaL-bQAASxSDhNb4pK-R9n1N_uw-6mSVcTRZHIJ5rvLcwtKe9Qa0ROMjfK1lu6iqSEFtfdwFnHpDj-VRJcu/  I realize it is not ...
    Posted to Custom IC Design (Forum) by smlogan on Fri, Jul 18 2014
  • Re: calculating falltime of output waveform
    Dear auto dipper,   > I am able to see a function RISETIME but nothing by the name of similar to falltime?   I recommend you either read the description of the function in the ViVA manual (in the calculator section) or simply use the built in help function shown below. The function can be used to compute rise and fall times ...
    Posted to Custom IC Design (Forum) by smlogan on Thu, Jul 17 2014
  • Re: Simulation parameters and tolerances
     Dear auto dipper, gmin, reltol, and vabstol are all defined in the "Virtuoso Spectre Circuit Simulator Reference" manual. Please search for the three terms on the Cadence support site and the manual should be listed in the the search results. Shawn
    Posted to Custom IC Design (Forum) by smlogan on Wed, Jul 16 2014
  • Re: One testbench for PSS and Transient Simulation with different stimuli.
     Dear Thomas, > . Is there a way, to setup both in one testbench ? For DC-simulations, I can just set the DC value > of the vwpl source to 0 and everything works as expected. I haven't found a way to do the same for > PSS simulations which leads to me always having to make a copy of the testbench where I then > statically ...
    Posted to RF Design (Forum) by smlogan on Tue, Jul 15 2014
Page 1 of 11 (105 items) 1 | 2 | 3 | 4 | 5 | Next > | Last »