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RF Design s parameter

  • Impedance measurement

    Sir/Madam, I have been designing a Differential drive rectiifer for UHF passive RFID in 130nm CMOS process. As the design of rectifier completes I got stuck with the impedance measurement, i.e. for finding input impedance of rectifier using Cadence Virtuoso. As it is a non-linear circuit which simulation...
    Posted to RF Design (Forum) by Jithin on Mon, May 12 2014
  • fully differential opamp .. how to calculate cmrr ??

    I made this schematic and I simulated this I am getting gain ~40dB and UGB 20Mhz, I want to do stability analysis for this fully differential ckt , And I want to find out --- CMRR --- PSRR ---Loop gain (from stability analysis ) How I should use cmdprobe to do stb analysis , please help me ,, adrew sir...
    Posted to RF Design (Forum) by rakesh reddy on Mon, Feb 17 2014
  • Regarding simulation of VARACTORS using MOS and finding quality factor

    hi using IC 5.10.40 I am working on VCO using MOS Varactor(B D S connected and inversion mode)but i am facing the problems listed here.. 1 Finding the capacitance and quality factor. I also want to plot these with tuning voltage. 2 Which analysis i should use for that, 3 If we see the DC operating points...
    Posted to RF Design (Forum) by Manu J Ptidar on Tue, Feb 11 2014
  • STM065 536 Design Kit

    Hi, I am new with Cadence community I hope I get some help. I start to work on the STM065 536 design kit which support RFCMOS as well. I have a problems with the suitable model libraries that I should load in the ADE env in order to simulate some simple circuit, that for example has PMOS and NMOS of...
    Posted to RF Design (Forum) by paderborn on Fri, Jan 10 2014
  • Virtuoso 6.1.3 help with impedance in sp analysis

    I am using IC cadence 6.1.3. I need to use this expression L = imag(Z 11 - Z 12 Z 21 /Z 22 ) / (2*pi*f) to find the inductor's self resoance frequency. However, after I run sp analysis, the "zp" I obtained from direct plot separate the real and imaginary part. I need to obtain a complex...
    Posted to RF Design (Forum) by freelee on Wed, May 15 2013
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