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# Equivalent Circuit Model

126 Threads found on edaboard.com: Equivalent Circuit Model

## Modelling of Switched reluctance motor phase

Hello together, i want to know how it is possible to modelling the phase of an switched reluctance motor for circuit simulation. I have to develop a cicuit which is able to controll the dc link voltage but i have no idea how to simulate the coils of the srm. How can i put an equivalent model of the coils in my simulation. (...)

## transformer matching circuit equivalent in virtuoso

Dear all, I need some help. I am designing a transformer matching circuit on virtuoso. As per my understanding, we can estimate the value of self inductances, L1 and L2 (first photo) using the transformer electrical model equivalent circuit (second photo). 137395 137396 How can I create th

## planar inductor or capacitor

Dear sir does the same equations will be valid if the inductor or capacitor are in shunt... Y11 = Im(Y(1,1)) C1=1.0E12 / ( 2 * _PI * _FREQ * ( 1 / Y11 ) ) Where L1=1.0E9 * ( 1 / Y11 ) / ( 2 * _PI * _FREQ ) L1: Effective Inductance (in nH) of a series RL network C1: Effective Capacitance (in pF) of a series RC network _FREQ: is

## Is there any SMA Connector Model available ?

Is there any equivalent circuit or S-parameters of SMA Connector around 1GHz ?

## Microstrip Patch Antenna Ansoft Designer

An equivalent-circuit model for the patch antenna can be found in Balanis' "Antenna Theory: Analysis and Design" textbook, and probably elsewhere on the internet. Basically, you want to create a lossy, half-wavelength resonator, the characteristic impedance of which differs significantly from your system impedance.

## Signal integrity using tool hyperlynx IBIS model

Can i use 50 ohm pull down termination as receiver and simulate the transmission line. Yes, if the receiver or your external circuit involves a 50 ohms termination. For a high impedance receiver, you can try to estimate an equivalent circuit from datasheet values. IBIS data also describes nonlinear input behavior like clamping diode

## cross coupled lc oscillator

Varactors can be trouble in term of model.Using equivalent circuit instead of its model may help.

## Differing Circuit Models for Cavity Resonators

I've been trying to reconcile two circuit models of cavity resonators. Background: Its commonly known in order to measure a cavity resonator, one has to "load" the resonator with however you wish to excite it (probe, loop, etc.). Parameters such as the length of your probe or size of your loop will affect the measured Q and f0. But thes

## Ring oscillator: small signal model

I believe that the equivalent circuit is somehow counter-intuitive. It implements a trick and rearranges the circuit to cut the stages at currentless points. The current generated by both Cgd instances is split into two terms each, utilizing Vgd = Vgs - Vds. As far as I see, there's nothing left, the equivalent (...)

## Extracting broad band RLC model from S-parameters for a DGS band-stop filter.

Your results contradict "can be easily extracted by parallel RLCs". Obviously, the equivalent circuit is only partly equivalent. That isn't actually surprising when you model a distributed filter with a lumped circuit.

## which resistor, capacitor, should be used in RF design

First simulate your design with ideal capacitors and inductors. Then replace them with their equivalent model or measured data and tune the circuit again to get the desired response.

## TSC4429 IC in flyback rectifier modeling in matlab simulink

I want to model the following attachment by matlab simulink. but I don't know that what is "TSC4429" IC! it is "gate driver" of "Q transistor". can you give me datasheet or equivalent circuit of "TSC4429" IC? how model it in matlab simulink? 116531

## Reproducing a circuit with non linear components from netlist

how spice replaces the transistor with its equivalent model in the sparse matrix while performing MNA It should be quite obvious from descriptions of circuit simulator operation what SPICE or any SPICE based simulator does. It performs an initial transient solution to determine the operation point, then calculate the node impedan

## Need help with a radio transmitter 27 MHz - AM

Some Spice simulators have problems to start an oscillation when using a crystal model, or the equivalent circuit of a crystal. Replace the entire equivalent crystal circuit with a simple shunt LC circuit (1uH and 33pF, and keep C9 in place) and you will get the 27MHz oscillation, just to (...)

## Using "PSPICE" software, Can we generate equivalent CKT and Obtain desired Parameter

I downloaded and installed the Student Version Electronics Lab "PSPICE" software. I have the following doubts regarding on the "PSPICE" software (1) From " PSPICE" software, can we import our normal electronic circuit and convert it into equivalent circuit for small signal analysis. (2) If we import our small signal (...)

## Exporting equivalent circuit from HFSS for apertured frequency selective surface

hi. can u help me in extracting equivalent circuit From HFSS

## How to extract parametres of pi and t circuit.

It's not generally possible to translate s-parameters to an equivalent circuit. ADS has "linear data file components", e.g. S2P to represent s-parameter data. Review CCSIM manual.

## Noise transfer function

Hi, I have attached BSIM equivalent model of MOS. I want to know the (transresistance) transfer function from drain channel noise source to the internal vgs of the MOSFET (Not between external G and S but internal vgs excluding Rg and Rs drop) in a particular circuit. I know how to use pss+pnoise+noise separation but I can only choose (...)

## Question regarding HFSS's equivalent circuit export

This is probably a really dumb question, but I've scoured every tutorial I could find and just couldn't find the answer to this. I am trying to export an RLGC lumped model of some stuff I made in HFSS, and then dump this file into the mtline instance in Cadence Virtuoso. The simulator I'm using is spectre. It seems like everything I've tried

## Help needed to solve these complex set of equations!!!

Hi, I am trying to model my circuit response. The frequency response and its equivalent circuit model is shown in the figures below. 106990 106991 At the S21 dip (transmission zero - stop-band), the susceptance of the equivalent circuit = 0. Hence, Ys cot (...)

## I got a problem in OrCAD Pspice

Diode model used in circuit seems to be creating trouble, Diode model DX does not have any resistance (model Parameter RS) defined, which is equivalent of making it R=0 for this device. Such models are hard to converg. I tweaked this model to have realistic value RS=100U (...)

## Non-idealities of current mode loop gain model - questions

As most SMPS models, the paper is using an continuous time equivalent circuit. In most cases, the average delay of the pulse width modulator is a major contribution to loop delay. It's a systematical rather than a non-ideality parameter. 3.) Other models show there is a zero due to the output capacitor ESR. In the (...)

## Current source in FET small signal equivalent circuit

How do you specify the dependent current source(i=gm*exp(-jwt) in the spice model for generating the small signal equivalent circuit of FET?

## Circuit parameter extraction

Hi I am trying to fit impedance curve of CMUT into Van Dyke equivalent circuit model using MATLAB. Can anybody help me how to set the initial guess for the Rx, Cx, Lx an Co components? Is there any paper on this? Thanks!

## Is it possible to get equivalent circuit model of antenna in hfss?

Run normal simulation then right click on analysis->Setup->Matrix. Click the equivalent circuit export button. For L and C I use Q3D which is another ansys product.

## spice model from equivalent circuit

I have the equivalent circuit of the HEMT device as part of the datasheet. How can I create a SPICE model for the transistor using the given equivalent circuit model? If I am to create a circuit in ADS with the attached equivalent circuit (...)

## Programmable FGMOS' simulation using virtuoso

I know that one can introduce programmability in FGMOS transistor using Fowler-Nordheim Tunneling and hot electron injection, but am unable to implement this idea in cadence design tool virtuoso. I would like to know how to generate this equivalent model of programmable FGMOS in virtuoso using tunneling and injection? What are the circuit (...)

Hii... Please help me to make simulink/matlab model of 12V 24Ah lead acid equivalent circuit. I also need to know how to design its resistance an capacitance values. Also help me with the charging and discharging control of equivalent circuit. Thank you

## URGENT!!!!!! how to generate a equivalent circuit made of rlc from S11 measured

Hi all I am attaching my S11 for patch antenna measured from VNA how can I draw an equivalent model (RLC ) can any one guide URGENT NOT much time left reply soon Kartik

## how can i draw an equivalent circuit model of patch antenna(RLC) in ADS

hi all help me in solving this how to draw an equivalent circuit model of patch antenna(RLC) in ADS can u tell step wise process from any example in ads c kartik

## how can i draw an equivalent circuit model of patch antenna

hi any paper or software kindly share the information regards kartik

## Extraction of equivalent circuit parameters from S-parameter measurement data

I have measured the S-parameters (S11) for a Schottky varactor upto 40GHz. I have a desired equivalent circuit model for my device. I would like to extract the equivalent circuit parameters to fit the measured S-parameters. Is there any software (preferably open source) that can help me do this extraction of (...)

## Interconnect modelling for high speed vlsi

negative equivalent component values, oddly enough, are not that unusual in modeling. It happens in microstrip models all the time. What is going on is that there are electromagnetic solutions to the circuit, and they have energy stored in various evanescent modes and various phase shifts. To get a simple lumped element (...)

## Maxwell sml file import to Simplorer

Hi, Please for your advices. I have created sml file (equivalent export circuit) in MAXWELL 3D from magnetostatic simulation. Now i want to insert this model to simplorer,but i dont know how. Please can you explain me how can i do it? thank you

## ESR of ceramic capacitor. How to read the resistance-frequency graph?

If the "resistance" means the real part of the impedance, the resistance shouldn't vary with the frequency. Only in a over-simplified first order model. If you consider ESR as the real impedance part of a series equivalent circuit, it will be of course frequency dependend: - because it also represents dielectric losses. By nature o

How about controlling the switches in the screen shot you have uploaded for charging and discharging process?? The simulator is interactive and animated. The link below will open the website, load my schematic, and run it on your computer. (Click Allow to load the Java applet.)

## Can anybody explain how to find impedance and trans conductance of this circuit?

80994 both M1 and M2 are in saturtion.need to find the impedance looking into the drain of M1 and equivalent trans conductance ,both in terms of gm1,gm2,ro1 and i need small signal model of the circuit :roll:.pls explain in simple methods..:?: :-(

## equivalent circuit of double gate mosfet

plz give equivalent circuit and schematic circuit of double gate mosfet

## Needed Help on Simple Equivalent Circuit Model from HFSS into Schematic

Hi Guys, I have been having some issue in making my antenna design into a equivalent circuit model. I have managed to export it from HFSS into a library PSPICE file. 67761 After I exported it, i use this PSPICE AD lite edition to open the library file. At first i saved it into a .cir file and then i try to run the

## MESFET small signal model quick question

Dear Friend! Hi You can use The equivalent circuit of jfet for a mosfet ( at small signal). Best Wishes Goldsmith

## equivalent circuit model for dual and triple band antenna?

What is the purpose of this equivalent circuit? Dear Debora thanks for useful comments. suppose I have an antenna and I want to know 1.how dose this antenna radiate? 2.how is the E-field distribution or current density of the radiator? 3.what's the antenna resonate frequency? Are these purpose sufficie

## hybrid model using h parameter.... confusion???

Sometimes an equivalent circuit diagram contains current sources rather than voltage sources. In these cases it is logical to use a conductance (in parallel to the source) instead of a resistor (in series with the source) to model a real and non-ideal source.

Hello there, I'm implementing an AC/DC/AC converter with an equivalent model of a DC capacitor. But right now I'm having an error message which read "Switcht that bounce D1 (in circuit)" D1 is the first diode in my AC/DC converter can someone help me. I do have that when I insert an inductance on the grid side Many thanks

## How to used this Li-Ion Battery Equivalent small signal Model

hi, guys in the application document of TI's BQ2472X/3X which called "Closed-Loop Compensation Design of a Synchronous Switching Charger Using bq2472x/3x", there is a Li-Ion Battery equivalent circuit model, How to used this model? the description as blow: "Figure 15 shows the typical Li-ion battery (...)

## Is it possible to get a equivalent capacitance from S parameters?

model has a equivalent circuit like that.(1) I run that model and get pair of solutions 'frequency vs response' like S parameter for each frequency. So, with these results, is it possible to get (or calculate) a capacitance for whole circuit?(2)What do you want to meant by figure (2) ? You can get (...)

## continuous time comparator

dear geozog86, Regarding analog comparision, I think that any solution you choose, must be based on saturation, in order to provide boolean output. And, inevitably the equivalent circuit model will decay on comparator topology. +++

## Equivalent circuit model

Hi snkhan you can use ansoft HFSS for creating equivalent circuit easily

## Noise Equivalent Model

Hi guys, When we calculate noise, there are two kinds of equivalent model: noise voltage and noise current. However, it confused me when I analysis the circuit When I use noise current way to analysis the circuit, noise cu

## why does the ESR of a load capacitor generate a LHP zero?

I'm not sure if that can really help u cuz the question is not so clear If u model the real capacitor impedance Z as a series of R (ESR=equivalent series resistance) and capacitance you got: Z= R+1/(s?C) =(1+s?R?C)/(s?C) where s=j?2?π?f=j?w (1+s?R?C) generate the LHP zero :roll:

## Equivalent model of Murata's 0.1 uF capacitor at 1.6 Ghz

Hello, dear friends. I'd like to build equivalent model of 0.1 uF capacitor at 1.6 Ghz. So i need some data - s-parameters, for example. Maybe somebody have appropriate datasheet or smth like this - which can help me. Thanks for advance.