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# rf design

• #### Delay in analoglib library

Hi, Can you please let me know the exact operation of the "delay" symbol in analoglib? I tried to check for the schematic of the delay, but I couldn't find it. When I used the delay in my circuit, it is providing isolation. I am not getting, how it is providing the isolation. Can you please...
Posted to RF Design (Forum) by Shahnaf on Wed, Mar 21 2012
• #### Guidelines for Maximizing Speed vs. Accuracy in SpectreRF simulations - Part 3

Several months ago, I started a 3 part series on Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance simulations. Today, I'll discuss part 3 of the 3 part series consisting of: Which Engine: Spectre or APS? Oversample vs Number of Harmonics Harmonic Trimming The first and second posts...
Posted to RF Design (Weblog) by Tawna on Wed, Mar 7 2012
• #### Why is the Noise Factor that I've counted inconsistent with the result of Pnoise?

Hi everyone, I've simulated the noise factor of Mixer ne600p in rfExamples library with PSS+Pnoise. With the Noise Summary printed, I calculated the Noise Factor, which is (total noise at output - load noise at output)/(source noise at output), then Noise Figure can be abtained with 10*lg(Noise Factor...
Posted to RF Design (Forum) by xxgeneral on Thu, Feb 16 2012
• #### SpectreRF AppNotes and Tutorials....Still One of our Best Kept Secrets!

Some of you may remember the blog written several years ago " Shhhhh...SpectreRF Tutorials and AppNotes - One of Our Best Kept Secrets ". Well, the more things change...the more things stay the same! The location of these tutorials and appNotes still seems to be one of our best kept secrets...
Posted to RF Design (Weblog) by Tawna on Mon, Jan 16 2012
• #### Nport Application Note has been Updated and Re-Released

Happy New Year! After many requests, I set aside some time and updated the Using the nport in Spectre and SpectreRF Simulations appNote for MMSIM 11.1. You may download the appNote on Cadence Online Support . More nport enhancements are planned, so stay tuned! If you have any comments or questions, please...
Posted to RF Design (Weblog) by Tawna on Tue, Jan 3 2012
• #### Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance - Part 2

I am often asked for guidelines on maximizing speed vs. accuracy for SpectreRF harmonic balance simulations . Today, I'll discuss part 2 of the 3 part series consisting of: Which Engine: Spectre or APS? Oversample vs Number of Harmonics Harmonic Trimming The first post in this series focused on the...
Posted to RF Design (Weblog) by Tawna on Tue, Nov 1 2011
• #### PA design problem

Signal V(I10,C17.cs.hn1)=1.02711GV exceeds the blowup limit for the quantity 'V' which is (1 GV). it is likely that the circuit is unstable. what is meaning?how to solve this error? thanks for help.
Posted to RF Design (Forum) by skchen on Sun, Oct 9 2011
• #### Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance - Part 1

Greetings, I am often asked for guidelines on maximizing speed vs. accuracy for SpectreRF harmonic balance simulations. In a series of 3 blogs, I'll discuss some of the "knobs" that you can tweak, those being: * Which Engine: Spectre or APS? * Oversample vs Number of Harmonics * Harmonic...
Posted to RF Design (Weblog) by Tawna on Fri, Oct 7 2011
• #### inductor layout extraction

Hi, I am using Calibre 2010.2_13.12 PEX to extract the on-chip inductor. I tried to set the victim net, return net and differential nets. But the RVE set-up does not provide a mutual inductance option, as indicated in the manual. can anyone tell me how I can set these parameters for inductor...
Posted to RF Design (Forum) by whlinfei on Mon, Sep 26 2011
• #### clarification on LNA design

Hi Any one help me that i am doing Complemetary current reuse LNA in MICS band in Cadence spectra...i selected one IEEE paper regarding my project..In that they didnot mention any device specification (i.e., value of inductor,capacitor,resistor,width of transistor) also i don't know how to desidn...
Posted to RF Design (Forum) by RFDESIGN 2008 on Sat, Aug 20 2011
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