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1000 Threads found on Cv Curve
can any one tell me hw to plot CV curve of a simple nmos using cadence? means hw to go abt.?
You can't modify the varactor CV curve, but the overall circuit circuit characteristic. You need to redesign the tuning circuit so the varactor is directly coupled to the LC circuit and recalculate the LC values to cover the domain. You may try to minimize the voltage on the VCO LC tank so the AC voltage on the varactor is much lower than 1V and i
I did In CADENCE. I swept the gate voltage and shorted the Drain, Source and Bulk terminal to GND. I did the DC analysis. Now I want to plot the CV curve. But I don't know how to do it?? Please can anybody tell me the way how to do it in CADENCE??? Is it ok to do it in DC analysis? I think the capacitor's val
Bias the MOSFET use DC voltage source as you want, remember to insert a large inductor between the DC voltage source and your drain, gate, source etc. After this, connect a 1V AC source to the gate, perform a AC simulation on the frequency range you care, then plot out the current flow through this AC voltage source, since the AC voltage is 1V, the
Connect in series 2 DC sources: One of them has Vdc=Vgate Vac=0 Another Vdc=0 Vac=1m Use AC analysis and change Vg as sweeping parameter. Then plot C= Ig/(2*Pi*Freq*Vgs) vs. Vgate. You will get CV curve. I did that several times in Cadence. It works fine. There is another method using transient with fixed frequency.
u can plot the capacitance , by using s parameter simulation or ac simaltiuon just sweep the control voltage and get the input impedance , the imaginary part is equal 1/(2*pi*f*c) u know f then u can get C or in hspice manual there is anonther way to polt Cv curve of search there khouly
i know maybe it is convinent to simulate by using ads and i want to know how to do that in hspice, to simulate varactor is it by using "LX" ?
the tuning range of the VCO depends on the CV curve of the varactor , so to get high tuning range u need the vacattor to have wide tuning volateg khouly
Hi, I tried to build a veriloga model for varactor and the code is listed below. I used a math equation to fit the CV curve from the foundry (from -1.8V to 1.8V). But when I did the ac simulation to double check the value in the equation, I got two different CV curve. Could someone help me? Thanks! ===================== module CVAR_S
Hi Guys, How can I measure Vth of an NMOS in a lab? I had read that I can plot the square root of the drain current vs. gate voltage (Vg) and then take the intercept of the line on the Vg axis. Can the CV curve also be used to measure Vth? Also how is Leff (channel length) and width measured? Thanks.
Look at Fig. 4.4. (C-V characteristic of a poly/n-well MOSCAP) in the PDF below. The deep depletion region is the range in the depletion region, where the low frequency CV curve is at (or close to) its minimum, or - in short form - the center part of the depletion region. At the min. value of the CV curve (in the cente
Hi, I plot the CV curve in following way with AC analysis. Initiate the ac analyis at one frequency and vary the control voltage. Plot the CV curve of MOS varactor (e.g at 1GHz) using the following formula. (-1 / (2 * pi * 1000000000 * imag(VF("/out")))) See the circuit diagram attached with the msg. 100H ideal inductor is there to
There are a number of solutions; You can extract a CV curve using ATLAS and sweeping the voltage and defining the steps. You could then consider plotting 1/C^2 vs voltage to extract the threshold voltage. Alternatively both ATLAS and ATHENA allow you to extract the VT voltage directly, which you could also conduct for comparison. Finally, I assume
Hello, Anyone knows a FPGA, microprocessor, DSP, ... implementation of an elliptic curve cripto system? Cheers!
Hi all. I'm looking for a good V/I curve Tracer project or schematic to build. Can someone help me ??? Thanks in advance. Best regards. jackrs 8)
I want to know if I can draw exponential function curve in the CST curve creation , because I want to know how I can get the planar metal with exponential function bounding in the vivaldi antenna simulation.who can tell me . thanks a lot !
hi how can I convert the intel's open cv codes for tms(c6000)?Is it possible? Is there any site or source that give me image processing codes for TIc6000 like open cv codes for intel cpus? thanks
Since I have a varactor with two terminals ,Gate and "Source+Drain",how to get varactor C-V curve in CDS?pls be more specific
How to draw a sinus curve in CST microwave studio? May someone please help
hi What will be the transfer curve of an inverter if i change Vdd and Vss?
How can we calculate the arc length of any curve for example of sine,cosine or any random curve?
who can give me BJT & MOS IV curve sweep ( I remember hspice have demo file )  I need it for characteresize some process library file .. and I hope can use "nest sweep" I use Q1 0 nb ne pnp ib nb 0 ib1 ve ne 0 ve1 .dc ve 0 3.3 0.1 sweep ib1 dec -0.1u -10u but I can not probe out IV curve , should I use Ve ->
Does anyone know if any transistor exists that displays I-V curve symmetry - ie, for a given gate bias a certain positive drain voltage results in a positive drain current, and the same drain voltage but negative results in the same negative drain current. That is, the positive quadrant of the I-V curve is reflected in the negative quadrant. I ha
how to draw a sin() function curve in HFSS8 or HFSS9? please help me,thanks
what are the direction cosines of a plane and that of a curve. Regards drdolittle :)
Find the index of income concentration for Lorenz curve given by the equation:
Hello all! My question is on HFSS 9. Who knows how to draw a point by point curve if I have a table of values (x, y) I know how to do it in HFSS 8 using the Macro Editor. But I need to do it in HFSS 9. Another question: is it possible to assign such line using formula y(x)=... I haven't found such option. Best Regards, Uninvited
Huntron - Any curve Tracers - I need the Huntron or any good and professioal or semi pro curve tracer schema or service manual. Thanks.. Safak
Hello all, I am searching for a function to fit Gaussian-like curve(the curve is like the Gaussian probability density function), and get the mean and sigma? Any suggestion will be appreciated! BTW, I use Matlab and C. Regards, Davy
how to get vco voltage-frequency transfer curve by using ADS? i used to do the simulation using Hspice, sweep the control voltage and save the freq (by using .meas function), and handle the data by using origin. i want to know how to do that in ADS, thanks!
Hi friends, I have hit a brick wall while working with the least square curve fitting function "lsqcurvefit". I am getting an error which I dont have a clue what it means. The error reads "Function value and YDATA sizes are incommensurate". Does anyone have some idea on how to avoid this. I am in desperate need of some help on curve (...)
Hi, I need to model the BJT again now to get the IB vs Vbe curve which I got by experimenting with the real BJT using a curve tracer. Now when i used the curve tracer i had kept the collector open. I gave a step current to Ib for 200mA . So can anybody have any idea how i can setup the circuit in pspice schematics for that.
hi could you tell me how to simulate tranfer curve of pipeline ADC single stage in Spectre? Just like that below 3Q
Q = Total Charge stored in the capacitor = C x V or CV = Capacitance x Voltage across the capacitor. The time is specified to reveal how much charge remains after the given time, say after 2 minutes. Temperature affects the performance. All capacitors suffers from leakage, i.e. DC current flows through it, between micro to nano amperes for of
How to draw the PSRR curve for a opamp in COSMOSSCOPE? When use hspice ,the output vdb(out) is 1/PSRR, so how can i get the psrr?
any one have data or curve for medtronic ph sensor needed. i filling this sensor is nonlinear?
i had plotted two ber curve for different subcarriers...... 1) the ber curve move to left when i increase the no. of subcarriers. 2) the ber curve move to right when i increase the no. of subcarriers. i just confuse....which one is the correct one? increasing in no. of subcarrier would definitely causing ICI to is that causing
hey, guys. I'm a newbie in filter design. I have got a problem. Is anyone know how to obtain the curve between resonator spacing and coupling coefficient K by using HFSS. thanks.
now i am designing a opamp with chopper stablization,but i donot know how to simulation the noise curve with the hspice, so i cannot decide the chopper frequency,is anybody can tell me?thanks!
Could anybody please send/attach an example of CV resume?
Dear all, Anyone could explain to myself why should Draw Frequency Response curve. Hope to hear from you all soon Thanks. Sie Kiam
I'm building VI-curve tracer, using PIC16f877 and DAC mcp4822 from microchip and interfaced to PC through serial port. The host software developed in Delphi. It is running at the moment, but not yet finalized. If I find interest, I?ll post the details, so we can discuss, and I'll be happy to receive comments and contributions
Hi all, I have build a simulation system to test my Error Correcting Code. And now I add modulation/demodulation module. When I apply BPSK and QPSK to system, I found their BER versus SNR curve almost identical, is it right in theory? My code rate is 0.9, code length >10000. BTW, I found BPSK and QPSK have identical uncoded BER versus SN
Hi, everybody I need a good V/I curve tracer circuit shematic. I think to use it with my scope thanks for helping
I want to plot an IV curve for NMOS transistor but couldn't find any familiar syntax such as .dc vds 0 5 0.1 vgate 0 5 0.5 --> in spice Anyone please help me to make similar statement in spectre. I don't have analog artist or any gui. Need the netlist. Thanks much,
hello Is every spice model suitable to plot gm/id curve? how should the analysis look like. i use .dc ibias start stop step but i think it's not correct any examples? regards
HI: In measuring clock signal phase noise, we can use spectrum analyzer. The output curve can be processed to get phase noise curve. However, the spectrum will be coved by the noise floor in large offset frequency. How we extract the real phase noise from the output of spectrum analyzer?
hi,everybody pls help me about plotting BER vs receive power info,IEC-61280-2-8 or OSFTP-8 About optical communication plot BER curve vs receive power extrapolation sensitivity(BER=10E-12). etc. For example: DWDM system sensitivity extrapolation (BER=10E-12) give some material or info. Thanks!
Hi ... I am a fresh Engineer and i have attached my CV. I need your fruitful suggestions, opinions and critism on my CV, my work and related jobs. Thanks in Advance
Hi ... I am a fresh Engineer and i have attached my CV. I need your fruitful suggestions, opinions and critism on my CV, my work and related jobs. Thanks in Advance