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modulated PAC analysis
Hi, I am currently using Virtuoso IC6.1.6 and running SpectreRF simulation in MMSIM151. I am attempting to run a modulated PAC simulation. Please see my setup below:One thing I do not know is the...
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The impedance frequency response of Large signal and periodic circuit
Hi ,i'm designing LC VCO and i want to simulate the frequency response of the tank impddance.At first, i use the sp simulation.But i realize that the small signal sp simulation is not suitable for the...
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LVS can't identify layout inductor
Hello Everyone,My inductor in layout can't be identified in assura LVS. As shown below, it shows that inductor is unbound to any layout device. I also tried Calibre LVS, which also has the same...
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Simulating invertion layer(channel) creation time in MOSFET
Hello, I have an issue that my data falling edge is very close to the clock rising edge, thus logic '1' doesnt get sampled as you can see in the arrows in the last photoso i got to the conclution...
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Can we generate LTE Modulated Signals in Spectre RF ?
Hi Cadence Community,I am actually a University student and wanted to know if we can generate modulated signals for LTE (I need to generated 80MHz LTE signal) in spectreRF using the envelope analysis...
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multiple gnd's passive components only system problem
Hello , i have a system with multiple device represented by R L C components each device has its own ground, i wanted to make POLE ZERO simulation on it.at first for the simplisity i made all the...
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Print Noise Summary. What is the noise unit for currents?
Hello everybody,I am comparing my noise simulations with the calculations.If I print the noise summary (spot noise), I can select either V^2 or V.By selecting V^2, at the end of the printed list there...
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how to plot MOS Capacitors(cgs,cgd) with respect frequency ?
hi allIn RF IC DESIGN i want to know that frequency response of mosfet parasitic capacitance .
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complex pole zero simulation into matlab bode plot
Hello, after succseeding to confirm with a simple circuit an AC sweep with Matlab bode plot of pole zero simulation out put, i tried to match similarly a more complex circuit which beyong poles and...
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RF Average power calculation
Hello friends,May I ask if someone knows how to calculate the average power delivered to a load? I'm running a HB simulation and the equation that I would like to use is the 0.5*V*conj(I), which is the...
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Calculator function to check conditions on 3 (or N) waveforms
Hello,I have a question about the use of calculator functions.As an output of an s-parameter (or ac) simulation, I have three custom waveforms a_w, b_w, c_w which are all functions of frequency, i.e....
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passive mixer-first receiver IIP3 simulation: IM3 curve not 3dB/dB
Hi,I design a common passive mixer-first receiver(passive mixer +TIA) in TSMC65LP CMOS process. In the test bench, I drive the receiver with a port , then a idea_bulun , then an ac coupling capacitor...
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plotting gm of DC simulation without file creation
Hello i am trying to plot gm of DC simulation by showing the gm in the result browserThe way i found to do it is by creating a file with a single line "SAVE M0:all" save it as scs file and put it...
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region annotation on mosfet
Hello , i am trying to set my transistor into saturation, i have tried results->annotaion->DC operation point as shown bellow.I need it to show the region parameter near the mosfet.How could it...
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generating calibre view costs too long time
hi everybodyI am using calibre to extract parameters of the layout, and I choose calibreview in the pex option. when i run pex, the "*.pex.netlist file" can be generated successfully(the...
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Common Gate
Hello Everyone,My problem is that the Common gate gives me negative/little gain unless I use a VCVS at the output before the Port.I am currently trying to design a Balun LNA, so it is important to test...
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Running multiple PAC simulations on the same PSS analysis
Dear All,I am trying to run PAC analysis for multiple i/p frequency values.Can it be done without running PSS multiple times if so, how it can be done.Kind Regards,
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Regarding the PNOISE analysis Form for sampled Noise analysis
Dear All,I am seeing the PNOISE analysis form for sampled case, as below:-For, Edge Crossing mode, I see Edge Number and Sleep time.I am confused here.Like PAC/PXF, the pnoise should have Thresold...
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How to capture the Sampled PAC/PXF results at a given frequency/sideband...
Dear All,I want to capture the Sampled PAC/PXF results at a given frequency/sideband using OCEAN command.For, sampled results, we have to use only spectrum NOT sideband.I am NOT able to find the...
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What is the difference between DC operating parameters ron and gds of MOS
Dear All,Cam naybody please tell what is the difference between DC operating parameters ron and gds of MOS.Is ron=1/gds ?Kind Regards,
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