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individual temprature setting in cadence virtuoso
Hello, is there a way to set an individual temprature to each transistor we simulate in the circuit?The reason is we have a temprature gradient on the chip .Is there a way to do it in cadence virtuoso?...
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ways of finding the corner files in my technology
HellO, i have started to use a new technology and i couldnt see in the directoried the FF TT SS corner files in it.i have looked in the manual and i get only tables with values,no actual directory path...
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cadence ADE EXPLORER vs MAESTRO
Hello, i saw that MAESTRO is a plotting addon is it a part of ADE EXPLORER?i cant see the relation between the two.i started to read manual and regarding MAESTRO i only see code.is there some simple...
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Copying read only problen in cadence virtuoso
Hello, i have a realy mistick thing going with copying libraries in cadence virtuoso,When i copy straight forwart the whole library it gives me a warning that accsess was denied,but when i go into the...
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Transimpedance amplifier design Cadence
Hi, I am new to the circuit design and troubleshooting. My project is to design a trans-impedance amplifier using Cadence that can amplify a signal coming from a photodiode. I started out with the...
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netlist extraction from assembler in cadence virtuoso
Hello , i am trying to extract netlist from a circuit in assemblerI have found the manual shown bellow , however there is no such option in tools in assembler.how do i view the NETLIST of this...
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zpm can't be evaluated
Virtuoso Version -- IC6.1.7-64b.500.23Cadence Spectre Version -- 17.10.515I have a very simple circuit. Please find attached. It is basically a resistor across a port. I run a S-param simulation and...
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QPSS with non-50% dutycycle square wave clocks (For sample and hold)
Hello,Would anyone know how to setup a PSS or QPSS simulation with 25% dutycycle clock sources or if such a thing is possible with QPSS.Fig1 (below) is a snapshot of the circuit I am trying to...
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searching for transistor inside hyrarchy in cadence virtuoso
Hello, I have a problem with a certain type of transistor,my hyrarchy has a lot components an sub components and visually inspecting them is very hard.is there a way like in other cadence layout viewer...
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How to install PLL Macro Model Wizard?
Hello,I am using virtuoso version IC 6.1.7-64b.500.1, and I am trying to follow the Spectre RF Workshop-Noise-Aware PLL Design Flow(MMSIM 7.1.1) pdf.I could find the workshop library "pllMMLib", but I...
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mixer pxf simulation error(IC5141,Cadence workshop document)
HelloThe document I referenced is https://filebox.ece.vt.edu/~symort/rfworkshop/Mixer_workshop_instruction.pdf. (This is cadence workshop document)While following the pxf simulation in the above...
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Sparam resonance tuning problem
Hello, I am trying to use two inductors in my LNA as shown bellow to have a S-PARAM response so i will have S11 with lowerst possible values and tweak them for matching network. However when i ran...
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gm of an active mixer
Hi all,What is the most accurate way to simulate the gm of RF transistors (RF stage) of an active mixer (single balanced or Gilbert cell)?I tried to simulate it with many ways such as:1. DC annotation...
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Noise figure optimization of LNA
Hello, I looking for reaching minimal NOISE FIRUGE by peaking a combination of the RLC on the output load as shown bellow.I tried to do it with PNOISE but it gives me an error on the |f(in)| i am not...
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Power gain circle interpretation question
Hello, i have made a power gain circle for 30dB,for setting a GAIN we need to set a matching network for input and output inpedance.but in this Gain circles it shows me only one complex number instead...
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cadence simulation error
Hi, allRecently, I meet the simulation error as the picture shows when I simulate my circuit with transient. how can I solve this problem?thank you~
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producing gain circles in cadence virtuoso
Hello, i am trying to produce a gain circles on a simple transistor as shown bellow.i have defined the range from 1 til 30 dB and i dont get any circle just dots in infinity?Where did i go wrong?Thanks.
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matching network problem in cadence virtuoso
Hello, i have built a matching network of 13dB gain and NF as shown bellow step by step.(including all the plots and matlab )its just not working at all,i am doing it exacly by the thoerytaking a...
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Kf parameter testing in spectre under non standart conditions
Hello, i need to test the parameter Kf under some conditions in subthreshold.i cannot just plot the OP param,becasue i need to derive it under certain conditions.Spectre(of Cadence) like BSIM(of...
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Three tones IIP3 simulation
Hi All,I saw the cadence tutorial on measuring IIP3 with 3 tones test (Lets say I have a mixer in the test so two tones are entered in the RF port and one is the LO).Now, I would like to verify if my...
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