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VSS yield analysis with frequency dependent component
I am currently working on an RF link budget simulation for a receiver design using VSS with sweep frequency. Therefore, my RF system model includes several frequency-dependent components (e.g., AMP_F)....
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PNOISE Noise Type Time Average vs. Sampled Jitter
I am new to the sampled jitter noise type in Pnoise simulation and I want to compare the results between time average and sampled jitter settings. My testbench is very simple, a square wave input at 8G...
View ArticleSpectre netlist defining voltage gain and saving the results to view in the...
Hello, I have a simple circuit with Vout as the output node of the amplifier and Vin as the input node of the amplifier.I want to save the dB voltage gain results and plot it in ViVA from the raw...
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P+ diffusion resistor with salicide (3 terminal)
Hello everybody,In order to use "P+ diffusion resistor with salicide (3 terminal)" in my design, how can I connect the Bulk (N-Well) to VDD (metal 8)? Best,
View ArticleClarity menu in Virtuoso
Hi everyone,I have installed Clarity 2024 (SIGRITY 2024.1) and I am using Virtuoso IC23.1 on RHEL9.I can successfully run Clarity as a standalone application (Layout Workbench), so the installation...
View ArticleLoapPull Analysis For Differential Power Amplifier
Is using a VCVS to convert the differential output to single-ended the correct way to perform a load pull on a differential power amplifier?---- Cannot upload pictures onto the website.
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cross coupled oscillator design problem
Hello everyone,I'm currently working on the design of a cross-coupled oscillator, based on the circuit architecture shown in the attached figure (from a referenced paper). The resonator has a center...
View ArticleRe: How to get all data from srrWave？
Hello! I designed a PA and performed load pull on it. In the obtained constant power contour plot, I want to extract the data of the constant power lines on the Smith chart. I can normally extract the...
View ArticlePcell inductor EMX simulation
Hello everyone,I am designing a VCO, and for the on-chip inductor, I will use a center-tapped inductor. For first-pass design, I want to simulate the "spiral_sym_ct_mu_z_a28_dm" from PDK. There is some...
View ArticleIntegrating the EMPro/ADC in cadence virtuoso environment
I would like to run EMPro and want to import EM results into Cadence for S-parameter and other analysis.Is it possible to integrate High Frequency tools( like ADS, EMpro) in cadence virtuoso...
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Discussion on Poly-Endcap in CMOS Layout
Greetings,I hope we are all learning and growing together. I would like to share some thoughts on the concept and concerns related to the Poly-Endcap in CMOS layouts ( Option A) when both sides are...
View ArticleLicence Issue
Hello, I am using a single-user license however when i try to download my PREPARED license got that error. I do not know what to do. Can you help please ?Failure getting SULCurrent offline license is...
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Error in cds_srr (line 20)
Hi, In the MATLAB, I am using cds_srr and cds_innersrr commands. Although I set the path to the spectre root, I face this error:One or more output arguments not assigned during call to...
View ArticleDe-embedding from S-parameters
Is there any documentation or examples on how to use the NEG or NEG1 ports to deembed ports from S-parameter measurements?
View ArticleTurning off non-linearity contribution of cells
Hi,Spectre version: 23.1.0.594.isr12I was wondering if we can turn off non linearity contribution of a certain blocks in the design. Something similar to what is possible for noise analysis where you...
View Articledoing an em simulation with emx but with a parameter sweep
hello everyone,I have a transmission line that I want to extract hundreds of s2p files for hundreds of length values. Is there anyway to do an em simulation but with a sweep for the length ? I know...
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How do you optimize using Microwave Office?
I am trying to use this software to optimize my L and C values. I saw my professor teaching it but he is using the 17 version. I have AWR Design Environment (24.1) and I'm at a total loss with why this...
View ArticleUsing deepprobe to see internal extracted nets
Hi,My Spectre version is 21.1.0.854.isr22.I want to use deepprobe to access extracted internal nets.I'm using QRC for extraction and use the dspf file.The purpose is to do some stability test (without...
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2 Tone Test of a LC-VCO and LDO: Best setup to get a reliable Phase Noise...
Hi all,I have an LC-VCO and an LDO with a very bad PSRR at frequency 250KHz (gain is positive!). I apply 20mV, 250KHz sinewave tone at the input of the LDO (VIN) and I want to check the PSRR impact on...
View ArticleStabindex and S1/S2 in Sprobe Cadence
Hi,I added Sprobe to the LNA I designed to check the stability of interstages. But the results generated by Sprobe confuse me.For StabIndex, it is always less than 1. However, at some frequency, S1 and...
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