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## can i use hspice to simulate the WBLNA

now, i am doing a project about a wideband low noise amplifier. but i haven't any tools,i only know that cadence'spectre can doing this ,so is there any others can doing this ,i have hspice in my pc ,so i ask whether hspice can doing this .and how to set the parameter to simulate the LNA.

## Question about phase noise simulation of ring VCO

I design a Ring VCO and use cadence pss pnosie simulate its phase noise. There is a strange simulation result. The phase noise curve is not always down with -20dBc /dec. From 100KHz the curve become a straight line . See belowing pic. I don't

## Question about noise in complex(polyphase) filter

I have made a 3rd order complex filter , when performing noise analysis using cadence , i put noise sources at both the inputs of I and Q channel , and saw the output noise at the I or Q channel , it was 45nV/sqrt(hz) . when i measured the input referred noise at the I or Q channel , it was about (...)

## plotting Ic versus Gain, Ic versus NF and Ic versus iip3 for

hi all i am aboslutely new to rf design using design. can someone help me with schematics to simulate the gain vs collector current, the noise figure versus collector current and iip3 versus collector current for a bjt in cadence? Also a basic circuit to plot the I-V Characteristics of bipolar as required in cadence. Also how can i plot (...)

## Positive Phase Noise in Spectre PSS

I have this problem so, I simulated my ring oscillator by cadence and ADS but both results are same. I think it is because of software model and you should ignore it.

## how to calculate jitter in cadence virtuso?

sir can we pls send me any tutorial of cadence spectre to simulate jitter for the pll. My emaid is bibhuprasadp@gmail.com Regards, bibhu prasad panda

## How to measure input noise of an OTA in cadance?

How to measure input referred noise of an OTA in cadence. Thanks in advance.

## noise analysis in cadence Analog Design Environment

i want to do noise analysis of a circuit, how can i do it in cadence ADE, references are appreciated ,help me. Thanks in advance.

## design of Delta Sigma in simulink

I am designing a Delta sigma ADC, so i need some guidence for designing it in simulink, and i have to do circuit design as well in 0.18u technology in cadence. guide me please. Thanks in advance!

## design of CMOS low noise amplifier

I can't find any cadence tutorials that discuss these topics : --> noise simulation --> Process Corners simulation --> How to plot gain against Id and stuff like that such as gm/id

## design of low noise amplifier in 'TECH_C35B4'

what can I do to design this LNA?? Where can I find the rules to design this LNA?? In enclosure there is the scheme of LNA that I have to consider. Thenk you Hello macg84, seems you have already quite a good schematic template to start with. I'd suggest you study the cadence SpectreRF LNA workshop first (you can find i

## Strange warning in 'pnoise' simulations with IC613(ADE-XL)

Hello All, I am trying to analyze phase noise for a design involving cross-coupled LC oscillator. I am able to get the PSS working, however, the pnoise analysis throws up a strange warning. I have attached the simulator log file. I tried implementing the suggestion posted at

## How to set noise spectrum to an input of the device?

Hi, all. I'm working in cadence IC 6.1. In my project I need to set noise spectrum to an input of my device. Did you know, is it possible or not? And if it possible, how can I do this( maybe, special signal generator or some option in analysis )? Thanks in advance.

## CADENCE SPECTRE HELP --- JITTER CALCUATION

Hi guys, I need to calculate the peak to peak jitter, Absolute and Cycle to cycle jitter of a VCO output in cadence spectre.. has any one done this before or any ideas. I am able to setup a calculator variable and sweep the edge number and plot graph of the crossover points vs edge number..... but i cannot get graph to be saved as CSV for p

## Calculation of noise figure

When I simulate the noise performance of an amplifier using cadence Spectre, I can get the values of output noise voltage (Vn,out) and noise figure (NF). But I use the formula NF=square(Vn,out/A)*1/(4kTRs) (A is the voltage gain.) the result of NF is different with the simulation result. Why?

## Transistor noise current simulation in spectre/cadence

Do you know how to measure the noise current of a transistor in saturation? I bias the mos in sat region then how to specify/manage the probes in noise analysis.

## Mixer NF Simulation problems in Spectre

Hello people, I am having some trouble simulating the NF of a mixer I designed. I am trying to simulate its performance using spectre Periodic noise Figure analysis (combined with PSS of course), in the ways described both in cadence's app note ( ) and in a tutorial from a Sweden University

## where can find an existing LDO design?

Hi all Can anyone give me an existing LDO design which can be run in cadence? Thanks Added after 1 hours 59 minutes: Hi all Can anyone give me an existing LDO design which can be run in cadence? Thanks I design a LDO myself, but the output noise is pretty high, about 1