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RF design

  • Problems with IIP3 with PSS and PAC analysis

    Hi I am working on a (passive like) CMOS attenuator and my problem is that when I do the IIP3 with PSS and PAC analysis my third harmonic is not increasing by 3dB. It is much lower. Me and my thesis supervisor did the transient analysis and did the calculations, we know that the third harmonic is increasing...
    Posted to RF Design (Forum) by Jesture on Thu, Sep 4 2014
  • RF electrode active water cooling

    Hi, I'm helping colleagues to design a RF (13.56MHz, a few kW) electrode and we argue about the water cooling. In the current design, normal tap water is in direct contact with the electrode, flow in a plastic tube and then in a metallic tube. We dissagree on if we should consider water as a conductor...
    Posted to RF Design (Forum) by Vereth on Mon, Aug 18 2014
  • Distortion Summary in New CDNLive YouTube Video and at IEEE IMS2014 Next Week!

    Hi Folks, Check out this great new video on YouTube: CDNLive SV 2014: PMC Improves Visibility and Performance with Spectre APS In this video from CDNLive Silicon Valley 2014, Jurgen Hissen, principal engineer, MSCAD, at PMC, discusses an aggressive RF design with distortion problems in the lab, and how...
    Posted to RF Design (Weblog) by Tawna on Fri, May 30 2014
  • 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
  • Re: analogLib in cadence 6.1.5 (LNA simulation)

    Hi Marouf, You do not need an additional license to use analogLib if you have a license for Virtuoso IC6.1.5 and the Analog Design Environment. You do need to have a license to simulate spectre/aps in the Analog Design Environment. You didn't mention what version of MMSIM you are using. If you are...
    Posted to RF Design (Forum) by Tawna on Thu, May 1 2014
  • Re: RF Designe basic calculations like Why we place the Capacitor............?

    Hi Pavan, Here are some basic texts. I'm sure there are others. Also, you may want to do a "Google search" Microwave Transistor Amplifier Design (2nd Edition) by Guillermo Gonzalez Microwave Engineering by David M. Pozar RF Microelectronics (2nd Edition) by Behzad Razavi best regards, Tawna
    Posted to PCB Design (Forum) by Tawna on Wed, Apr 30 2014
  • RF Designe basic calculations like Why we place the Capacitor............?

    Hi All, I'm PCB designer as if now working on RF card. I have some doubts in RF Design. 1. Why we place Capacitor or inductor in path of Antenna . If required how to calculate the value of Capacitor or inductor. 2. How we need to calcutate the length of trace between antenna to IC .(i.e will Depending...
    Posted to PCB Design (Forum) by PAVANRKS on Wed, Apr 30 2014
  • Double Exponential Current Pulse In Virtuoso

    Sir, Is it possible to model a double exponential current pulse ( used for representing Single Event Itransients) in Cadence Virtuoso?. It would be helpful if you could explain the method for getting the same. Yours faithfully Aravind
    Posted to RF Design (Forum) by aravindkvarier on Thu, Apr 17 2014
  • PSS simulation for RF LO and mixer simultaneously

    Dear Team, I am designed RF receiver in cadence. I have simulated oscillator and mixer individual. Now i am trying to simulate simultaneously. But PSS analysis is not running. Because beat frequencies for RF signal, LO signal and IF signal is different. How can i simulate it? Can you please guide me...
    Posted to RF Design (Forum) by Darshak on Tue, Apr 15 2014
  • Re: how cadence do to calculate Z11 in a psp analysis

    Hi Reda21, Let's define the question a bit more...it's not entirely clear what you are measuring and why you're using psp analysis for this. What kind of circuit is this? If you can use sp analysis, it's much easier to use/understand. Say you have a 2 port circuit. If you want to look...
    Posted to RF Design (Forum) by Tawna on Tue, Apr 15 2014
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