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88 Threads found on edaboard.com: Momentum Capacitor
Hi,
You need a CD decoupling for 10GHz for this application you can find at ATC as well as Dielectric Lab , Murata etc capacitors for low ESR and high SFR. ATC has the 500 series. The problem for your application is the parallel resonance which come after the series one. If you work around the series resonance you have no problem because you need
RF, Microwave, Antennas and Optics :: 07.08.2004 10:27 :: DJ :: Replies: 7 :: Views: 2355
A TR line has aquivalent LC model (LPF with high cut off freq). As you move farther the ground then the aquivalent capacitor goes down (such as two capacitor plats). The characteristic impedance is Z0=(L/C)^0.5.
Means as C goes down Z0 goes up.
For a wide band capacitor you might use open stub with low Z0. For an inductor use high Z0 line. (...)
RF, Microwave, Antennas and Optics :: 25.09.2004 20:07 :: DJ :: Replies: 8 :: Views: 894
If this is a planar capacitor, you should use any planar tool (Sonnet, momentum, EMSight, etc.), you should not use volume meshers. Planar tools handle the very thin dielectric layers extremely easily, volume meshers struggle in such cases. You can very likely do your entire capacitor (if it is planar and no more than 2 metal layers) using (...)
Electromagnetic Design and Simulation :: 29.06.2005 15:50 :: rautio :: Replies: 7 :: Views: 1188
Is there any tutorial on how to design capacitor in momentum, @DS?
/k
RF, Microwave, Antennas and Optics :: 03.12.2005 16:00 :: kella :: Replies: 0 :: Views: 635
Hello folks,
I need to simulate several resistors of very low parasite capacitance in ADS momentum. I contacted the vendor for the model but they charge me a lot of money. I tried with the model from other company but seemed not applicable for my case.
Actually the resistor is physically equivalent to one pure resistor parallel with a 41fF ca
RF, Microwave, Antennas and Optics :: 09.01.2007 01:41 :: alard :: Replies: 0 :: Views: 696
Hello folks,
I need to simulate several resistors of very low parasite capacitance in ADS momentum. I contacted the vendor for the model but they charge me a lot of money. I tried with the model from other company but seemed not applicable for my case.
Actually the resistor is physically equivalent to one pure resistor parallel with a 41fF
Electromagnetic Design and Simulation :: 09.01.2007 11:33 :: alard :: Replies: 1 :: Views: 940
Hi,
I am using momentum 2006A in order to simulate a planar spiral inductor with a patterned ground shield. The problem is that I do not fully understand how to insert ground to the shield. I tried to use ground ports but they need to be associated with another port. When I associate them with either of the inductor
input ports, the results of t
RF, Microwave, Antennas and Optics :: 19.01.2007 16:57 :: nikogian :: Replies: 1 :: Views: 753
HI everyone,
Anyone one know how to place monoblock capacitor on top of thin film?And below the thin film there is cavity?
I would like to simulate it using ADS/momentum/EMDS..
Thanks a lot..
Electromagnetic Design and Simulation :: 17.11.2008 08:47 :: Greenhill :: Replies: 0 :: Views: 855
hello,i want to layout a inductor and capacitor ,the capacitor musst withstand high power.
see please the attached photos
who can layout the capacitor and the conductor(the values of the capacitor and inductor are just example)) in momentum with the given 300MHz frequency.
thank you very much for your help.:|
RF, Microwave, Antennas and Optics :: 15.01.2009 16:13 :: taglub :: Replies: 0 :: Views: 329
Hello, imado_60. Unfortunately, ADS has limited number of coplanar components, only transmission lines i think. If you want to simulate an interdigital capacitor in ADS you can only in momentum, from the EM field point of view (depends now what kind of result do you want from the simulation!!). As far as I know, i don't think any kind of microwave
Analog Circuit Design :: 06.05.2011 12:30 :: kondor_konami :: Replies: 1 :: Views: 759
I'm simulating the capacitance of a HEMT in off-state, and the capacitance values I got from Maxwell 2D (only simulated the cross-section), Sonnet, and momentum are different from each other, and Maxwell 2D's result matches the experimental value very well. I wonder if 2.5D EM simulators like Sonnet and momentum can calculate the fringing capacitan
Electromagnetic Design and Simulation :: 04.11.2009 01:21 :: alexneverhurts :: Replies: 8 :: Views: 1440
Hi, I am designing a multilayer interdigitated capacitor in a BiCMOS process with 6 metal layers. This capacitor is mainly for decoupling purpose, but some variants are also used for RF purpose in millimeter-wave range. Targeting capacitance falls in the range of 50fF to 300fF roughly.
I have made layout with cadence and extract it with Calibre
Electromagnetic Design and Simulation :: 15.02.2010 12:38 :: guoluren :: Replies: 15 :: Views: 1839
you need to transfer this design to schematic and then simulate the schematic.
Layout will not support simulations except momentum and FEM solver engines.
RF, Microwave, Antennas and Optics :: 09.04.2010 06:07 :: kspalla :: Replies: 8 :: Views: 1544
Can any one plz guide me through teh process of designing an LNA in momentum...or that if I have a schematic made ..what steps would i need to follow for the onjective acheivement i.e. LNA?
thnaku
regards.
RF, Microwave, Antennas and Optics :: 19.04.2010 21:49 :: mashhadiDRA :: Replies: 5 :: Views: 1909
Hi all,
have any one ever simulating a mim capacitor in momentum?
I understand that the mim capacitor uses some extract layers and different substrate thickness. so the substrate definition in momentum will be different in momentum for mim capacitors. Then I have problem in (...)
Electromagnetic Design and Simulation :: 23.04.2010 14:00 :: jimiblues :: Replies: 0 :: Views: 1076
Hello all,
I am working on a filter design and I use ADS momentum for simulation. Its a microstrip filter which is in a complex shape and can't be set up in ADS schematic. Now I want to add a varactor at some point to make it tunable but I don't know how to do it. So I guess I have to do this in schematic window to be able to sweep the biasing v
RF, Microwave, Antennas and Optics :: 25.06.2011 16:59 :: eee100 :: Replies: 4 :: Views: 435
You should put 10 times 1pF MiM cap parallel..
If your operating frequency is pretty high, then simulate them in momentum to check the parasitic inductances and stray capacitances..
RF, Microwave, Antennas and Optics :: 03.12.2011 06:14 :: BigBoss :: Replies: 2 :: Views: 488
Hi,
I need micro strip line matching network for 1825MHz , designed in ADS momentum. Schematic files are in attachment .
I want to match (0.5-j*0.6) ohm to 50 Ohm. I have tried many times but design does not work on prototype board. There might be some discontinuity issues which i have tried to solve using MSTEP component.
I want the matc
RF, Microwave, Antennas and Optics :: 21.12.2011 10:08 :: adnan012 :: Replies: 22 :: Views: 1174
Can anybody suggest a software to model MoM finger capacitors?
I was trying to use ADS momentum, but somebody said it was a 2.5D simulation software which I guess will ignore the horizontal EM field between metal traces and vias. However, unlike MIM capacitors, MoM capacitor utilize this horizontal field heavily. So I (...)
Electromagnetic Design and Simulation :: 29.09.2012 10:31 :: trivial :: Replies: 7 :: Views: 270
question what kind of analog design youare going to?
situation 1 up to 300MHz including linear amp I recomend MICROCAP reason is htey have alot of samples (I am using it several GHZ area but not so happy)
situation 2 GHz area design I recomend to use
ADS its fine but expensive.And when you design antennas you use momentum its very slow.
situat
ASIC Design Methodologies and Tools (Digital) :: 13.04.2002 10:00 :: ptoo30 :: Replies: 25 :: Views: 5563
I suggest for your application using momentum to simulate the
actual capacitor geometry you are using. You can import your gdsII file directly into the ADS layout to do this. If you define your silicon substrate losses correctly and also the process layers then you will get a very accurate result. I simulate complete MMICs this way with excelle
Other Design :: 21.12.2002 06:54 :: mmwave :: Replies: 11 :: Views: 2521
In terms of meshing, I think momentum is the best among the commercial 2.5D MoM codes.
You should first precompute the mesh and see if it hangs. I doubt it is a memory problem. Please upload the layout for us to learn.
Electromagnetic Design and Simulation :: 14.01.2003 19:20 :: loucy :: Replies: 15 :: Views: 3059
I think the current momentum can't handle that. Can you use momentum's result in the schematic mode?
RF, Microwave, Antennas and Optics :: 17.01.2003 00:04 :: loucy :: Replies: 6 :: Views: 1329
I am a new Eagle user and I have no clue on how it works. I have generated a gerber file using ADS momentum and want to import the gerber file to the Eagle. Is there any way to do that??
PCB Routing Schematic Layout software and Simulation :: 02.09.2006 01:57 :: iamprasanna :: Replies: 673 :: Views: 151753
Hi all:
One topic in which I am interested is the
comparison between EM solvers and Device solvers.
In order to model a metal on-chip, such as
an interconnect over a multilayered
SiO2 & Si structure, I limit my solution with two
choices:
1) Using EM solver (Fullwave/Quasi-TEM),
2) or using device simulator.
The problem with EM s
Electromagnetic Design and Simulation :: 28.03.2003 17:06 :: div :: Replies: 6 :: Views: 1898
Does anybody has experience importing PADS PCB file to MW simulator like momentum?
This has nothing to do with this topic, please start a new topic for this instead
PCB Routing Schematic Layout software and Simulation :: 02.12.2004 07:00 :: ME :: Replies: 132 :: Views: 29098
Well, you should remember the C=epsilon0*epsilonr*S/d formula. This is quite a good approximation for low frequency. You should simulate with planar EM simulator like momentum (ADS).
Is this cap used for decoupling? Why not use a radial stub instead then? Which stackup do you have?
RF, Microwave, Antennas and Optics :: 12.10.2004 17:36 :: radiohead :: Replies: 7 :: Views: 606
Ans18vertical connection diagram illustrates the relative position, going
vertically, of all the drawn layers. Such diagrams are especially
useful in complex processses, such as DRAM processes.
Added after 3 minutes:
Electromigration is generally considered to be the result of momentum
Analog IC Design and Layout :: 28.06.2005 09:38 :: kapils1982 :: Replies: 37 :: Views: 11932
Rautio,
Thank you for the comments. I have access to IEEE trans; will take a look at the article and benchmarks.
Ansoft's Designer has a built in planar solver, yet regardless of the solver used (zeland, momentum, etc) they all have "issues" which if known beforehand, can be worked around. The problem is having a suitable reference to wo
Electromagnetic Design and Simulation :: 30.03.2005 22:19 :: smt :: Replies: 7 :: Views: 3086
1. The IC has a 'protection' mechanism that is triggered (activated) when the current exceeds a certain level (as measured by Sense1/Sense2 and compared to Vref). What happens then is that the output switches off. It is then restarted a certain time later (determined by the chopper rate, which is set by the OSC pin). This mechanism is then repeated
Robotics and Automatics Forum :: 05.07.2005 17:34 :: Marcel Majoor :: Replies: 38 :: Views: 17363
Hi, GoaGosha:
In order for the readers of this topic to have an independent judgement, can you please describe more details about your "best setups" in momentum & IE3D for your spirals? What was the information("help") you obtained from the vendors?
It is relatively easy to "tune" the simulation settings to obtain agreement with one's measur
Electromagnetic Design and Simulation :: 06.03.2006 19:47 :: loucy :: Replies: 20 :: Views: 2621
Hi, ommumm.
I think you can use ADS's momentum or HFSS to model and simulate the two-port inductor, and get the S parameters file. So you can calculate inductor value from S parameters using the right formulas.
RF, Microwave, Antennas and Optics :: 29.11.2005 08:24 :: dopradar :: Replies: 3 :: Views: 1778
u can start with ASICTIC , but u must write the technology file for it carefully
then u have to use some EM simulator like
momentum "ADS"
IE3D of zeland , it is great and easy to use
Sonnet : never used it , ppl saying it is great
HFSS : full 3D EM simulator ,
CST : also Full 3D Simulator
note
"many ppl used momentum with great ac
RF, Microwave, Antennas and Optics :: 26.10.2006 18:22 :: khouly :: Replies: 11 :: Views: 2984
Hi, GoaGosha and Ruri,
Thanks very much for your quick reply.
GoaGosha, I agree with you with you that in HFSS we cannot do a stand alone simulation without parasitics. When I set the ground ring small, the simulated inductance is about 10% smaller than expected. And after I enlarged the ground ring, I thought the result will c
Electromagnetic Design and Simulation :: 21.03.2006 03:23 :: Ruritania :: Replies: 9 :: Views: 1434
Low frequency breakdown occurs when the capacitive part (scalar potential) of impedance matrix completely overwhelms the inductive part (vector potential) of the impedance matrix. We can split the impedance matrix into two parts: Z = Z_A + Z_Phi, where Z_A is the part of the impedance matrix due to the vector potential and Z_Phi is the part due to
Electromagnetic Design and Simulation :: 05.06.2006 20:21 :: Wiley :: Replies: 37 :: Views: 4181
koosdoos,
Do you understand how is backpropagation algorithm? It's very important that you must understand how backpropagation neural network work. You have to refer to books, as I can't explain too much here.
These are some basic steps you can do after understanding the algorithm,
First, determine what kind of input you have. Eg core point
Digital Signal Processing :: 01.08.2006 08:24 :: leekk8 :: Replies: 52 :: Views: 8311
there are alot , and in many asspects as well
u can analyze the microstrip filter using EM simulation which is most accurate
there are "momentum , EM sight , IE3d , sonnet , HFSS
there are also filter simulation in compact model level , which is a models for TX lines
the software . MWO , ADS , Eagleware , Ansoft designer
khouly
RF, Microwave, Antennas and Optics :: 16.08.2006 11:52 :: khouly :: Replies: 10 :: Views: 1772
Hi
I think it's fundamental question
The s-parameters are exact if we have established what trans line connected to component and in what substrate component is placed
The using s-parameters measured on one substrate with one width of trl to model component behavior with another trl width produce errror due to component-trl coupling. We can not
Electromagnetic Design and Simulation :: 06.10.2006 12:17 :: Grig :: Replies: 1 :: Views: 582
Hi
1.Add ports for lumped components in your layout
2.simulate layout using momentum
3.approach 1:
make schematic based on s-parameters data component + lumped elements,
approach 2: make layout component using option from momentum menu and make schematic based on layout component + lumped elements
4.simulate schematic
Electromagnetic Design and Simulation :: 21.10.2006 12:13 :: Grig :: Replies: 2 :: Views: 1398
If you are using a commercial planar simulator, e.g. Ansoft Designer, Sonnet, momentum, you do not need to worry about using an effective dielectric constant. All of the planar simulators will account for very thin layers dielectric layers in the Green's function. Hence, you do need an effective dielectric constant, and in fact, I would discourag
Electromagnetic Design and Simulation :: 08.02.2007 20:57 :: Wiley :: Replies: 7 :: Views: 1911
Hi,I am designing a capacitor using the microstrip how can I measure my capacitance in the sumulation for momentum ADS layout design.
I have perfect matching port terminals 50 Ohm and interdigital capacitor.
thanks
RF, Microwave, Antennas and Optics :: 13.02.2007 18:02 :: electronicman :: Replies: 2 :: Views: 626
Hi~
Voltage is applied so as to make electrons move, which is so-called current. When electrons are moving, they collide with mother-atoms, which causes the momentum change. The energy obtained electrons in the electric field is transfered to mother-atoms. Simply speaking, the momentum of mother-atoms are called heat. Higher voltage will give el
Electronic Elementary Questions :: 31.03.2007 13:36 :: yjkwon57 :: Replies: 7 :: Views: 577
hello all
i am trying to make Metal insulator metal capacitor using momentum, the only little problem i am facing is how to measure its capacitance with results in S parameters, i am using reactive part of S21 to measure capacitance, Is it correct!!
secondly i need to optimize it so if S21 at 5GHz is 0.282/-117.839 how do i conver
Electromagnetic Design and Simulation :: 15.05.2007 14:22 :: wlcsp :: Replies: 4 :: Views: 1317
You must provide the substrate information and the dimensions of the inductors in ADS/ momentum. The inductor is then simulated with the associated parasitics.
RF, Microwave, Antennas and Optics :: 18.06.2007 22:18 :: psmon :: Replies: 4 :: Views: 783
When you're close to self resonance, that means that parasitic capacitance, either substrate or winding-to-winding, is causing a resonance. If the Q is high, then resonance can be very narrow band! You therefore can't tune both matching and single-ended to differential convertion over a wide-band.
Lets consider the sources of capacitance. Subst
Analog IC Design and Layout :: 26.06.2007 21:20 :: gszczesz :: Replies: 4 :: Views: 699
If you are using ADS, then why don't you use momentum for your LTCC EM simulation? I would think it would be more efficient, and it would probably have less error in the ports where you want to connect your LNA.
--Max
RF, Microwave, Antennas and Optics :: 20.06.2007 15:03 :: maxwellian :: Replies: 8 :: Views: 932
for RF PCB, use ADS & momentum for good analysis. & good Txline models availbale
RF, Microwave, Antennas and Optics :: 19.12.2007 07:59 :: ADS_RFMW :: Replies: 24 :: Views: 3120
With regards to Sonnet's planar EM simulation, i do believe that is also a 2D simulator?
Sonnet, ADS momentum, and MWO's Emsight are "3D Planar" simulators (fields and currents are modeled in all 3 dimensions, but dielectrics must be planar).
I did not really consider that because ADS momentum or MW
RF, Microwave, Antennas and Optics :: 27.12.2007 02:12 :: Joe_User :: Replies: 8 :: Views: 1378
u can use either sonnet software, which is freely available in the web. u can use ADS schematic or momentum for the same problem.
Electromagnetic Design and Simulation :: 17.02.2008 17:06 :: ayan_ns :: Replies: 9 :: Views: 1247
Hello ;
It's very urgent for all members, i need your help about this resonator::?:
1-What's the role of the gap at the endings of the CRLH TL as shown in figure?if it represents a capacitor, how can we find it's
Electromagnetic Design and Simulation :: 07.05.2008 20:43 :: MrElec :: Replies: 0 :: Views: 612
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