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Inductance Hfss

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50 Threads found on Inductance Hfss
I'm new to hfss and microwave engineering. I tried to simulate a spiral inductor of 10 turns for 100nH. I used the modified wheeler equation to design the inductor. I want to find the resonance of this structure. and the inductance value. I have posted the design here.Also pls verify the simulation i done is correct
Why it should be not possible. It depends on your structure size and if you have to add some pad for your cap. you should take its properties (inductance & capacitance) into account depending on your operation frequency.
So, anyone have any idea why the inductance increase at low frequency or what should I do to make it right? Not sure if this is the reason in your data, but we often see a low frequency effect in simulated and measured inductance. It is related to skin effect, where the extra inductance from skin effect decreases (!
Hello, I'm working on antennas and I use hfss for the simulation. Now, I start to use DESIGNER for the co_simulation. I import the model hfss to DESIGNER, I connect components (capa, inductance..) and I would like to calculate EFFiciency and the gain of the new system. Can you help me please? thx :)
How can we find the frequency resonance of the inductance and its quality factor by hfss?
I want to calculate inductance of helical coils in hfss. I have two kinds of helical coils: Open end and short end as showed in the picture. In helical coils, we need to take into account stray capacitance. So Z= j(wL-1/(wC)). These coils are self-resonance, so having self-inductance and self-capacitance. So, we can not rely on (...)
Hi guys, I ran a simulation in hfss but after simulation, the inductance that I got was much higher than the supposed ~27pH from the schematic simulation. I've attached the hfss file and if anyone spots any mistake, please do let me know! Thanks! Substrate was advised to draw at 737um, air box 2211um, interlayer dielectic layers are (...)
To get resonance near 500 MHz using a 330pF capacitor, the inductor should be about 0.4nH (400pH). So, I assume your inductance calculation is wrong.
Hi, My name is Oscar and I'm working on a Capacitor - Inductor Circuit on hfss. Fisrtly, the attached file "LCcircuit.adsn" (made on ANsoft Designer 8.0.0) shows the LC Circuit. Capacitance = 10.8434 pF with Q-factor = 30 inductance = 1.3435 nH with Q-factor = 300 If you run the LinearFrequency sweep on Designer, you will si that de
Hi, I am a newbie in RFIC design. I want to design a spiral inductor on chip. Follow some instruction on internet: First, I draw it in hfss, simulate and extract the S-parameter to s2p file. After that, I use ADS to calculate the inductance: 81351 I don't know why it's wrong. The inductance look like crazy [ATTACH=CONFI
Hi all, I want to simulate the ground pad inductance,four groud vias between top layer to bottom layer .How to set the port? Thank you in advanced,
Hello Everyone, I am simulating a small inductor which has inductance of around 50 pH. The Ansoft hfss is adopted in my simulation. The outside dimension is only 30 um roughly. A guard ring (PEC) is added to around the structure to let port 1 and port 2 have same reference. The simulated inductance is around 100 pH. Actually, the guard (...)
I have designed a coil, i need to calculate the inductance value using ansoft. I have done the hand calculation, but i need to verify it with do I do this??? is there a way??? thanks
hi for solve this u should add inductance and resistance to antenna
Hi I have simulated cpw type inductor in hfss. The inductance value at lower frequency such .1GHz to .4GHz is around 80nH to 40nH but the value from 0.5GHz is around 6nH upto resonance. As per calculation i have designed the rectangular inductor for 7nH. But the results at lower f
since you have s-parameters you should be able to get the capacitance. There's a relatively simple transformation to go from s-param to Y-param and from that capacitance (or inductance). There should be a past post in this forum that describes this. Looking at your graphs I'd expect there to be a complicated frequency dependence. I usually write
Superconductor also has loss at microwave frequency, which is represented by surface resistance. From this point of view, it is the same as ideal conductor. Don't forget the surface inductance of a superconductor. This has a different frequency dependence from normal conductors (skin depth δ vs. London
hi all i need to find the quality factor and the equivalent R,L,C of a simple waveguide cavity in hfss v11. please tell me how can i do this.
I am using hfss. Do you know how to setup the port? I have the hfss12 project file attached, the ground inductance is around 0.05nH. But I am not sure if the setup is right. Can you take a look and tell me what you think? Thanks
hfss is complete overkill to simulate a short piece of wire. There are simple equations to calculate the inductance: inductance of a Straight Wire: A Calculator inductance Calculations: Round Wire over
I am a new user in hfss v.12. I would like to simulate inductive coupling between two inductance. The problem when I increased the number of turn the program gives errors. Adaptive solution setup, process hf3d error: Matrix solver exception: out of memory.. (10:22:56 mai 17, 2010) Unable to create child proc
Hi, I am doing my first hfss simulation and seem to be stuck on a few (sadly simple) things. - Is there a way of directly inputting a surface inductance? I found the 'boundary reactance' option, but I deal with superconducting resonator circuits with extremely high quality factors, which are very sensitive to such parameters. I dont mind approxi
I would recommend you use the pin width. That way your model will contain the correct current profile as it approaches the device pin. Otherwise, you will lose the proper modeling of the extra inductance as the current flows from the edges of the microstrip, around the facing edges of the microstrip line (at the substrate gap) and mates with the
1. You need the airbox, otherwise the pattern of fields around the inductor will be incorrect, and so will the results. 2/3. I don't like your whole probe/coax method. The probe and coax have inductance (and capacitance) of their own which gets mixed into the hfss results (S+Z parameters). So of course the results are wrong. BTW, there is no nee
Hi, Can anyone please help me for finding out the inductance between two parallel cylindrical Through Silicon Vias used for 3-D Integration using hfss? The condition is that the flow of current through the TSV is in opposit direction and the dielectric separating them is Silicon substrate.
i have 2 conductor evryone is surrounded by an insulator i want to find the mutual inductance between them and the reistance and self inductance how to put the port?? waveport or lumped poer?
Hi, Is there a way to obtain partial self inductances from S-parameters?.... i am modelling a single Bondwire in hfss, however the results obtained are for the loop inductance, is there anyway i can calculate the partial self inductance of the bondwire? Is there a method of breaking the loop inductance (...)
Hi, i used a lumped port in cosimulation with designer, putting a lumped element like a capacitor or inductor. If you substitute the lumped port with a lumped element (in boundary condition) in hfss the two simulations will be the same. The different is the speed: when you simulate in Designer and you change the value of the inductance or of the ca
build a box of vacuum across the 2 lines, define it as a inductance. The integration line should contact the 2 MS lines. Added after 1 minutes: The box could be just above the MS lines, and have contact with the MS lines.
Check the definitions of the "inductance" you ploted. I think you are comparing apple to orange (the hfss "inductance" is not the Sonnet or Momentum inductance).
I want to use hfss to simulate a RF-IC spiral transformer. I have succeeded in simulating a single coil spiral inductor, and get the right inductance using the following formula: L=-1/2/pi/Freq/im(Y11) Based on this, I want to use the following formula for mutual inductance: M=-1/2/pi/Freq/im(Y12) But the results seem not quite (...)
I simulate spiral inductor by hfss. inductance is normal , indudctance equation=im(Zin)/(2*pi*freq) but Q-value is negative , Q equation= Q=im(Zin)/re(Zin)
Hello Everyone, I am trying to model a 6 turn spiral inductor (rectangular) in an air box. I was wondering if anyone could have a look at it and see why I am getting no value for the structures inductance and very little resistance. Predicted Values from using other s/w / experimental: inductance at 1 MHz should be around 730 nH Resist
Hi, I have layed out an loop antenna and ran a simulation sweep. I want to know how to extract the inductance of the loop antenna. I set the frequency to be solved to 434MHz(my desired frequency). I am getting a inclined straight line for the S parameter. I know that it should dip at 434MHz for it to work properly. What exitation shou
Hi, I have an inductor and to compute the value of the inductance I use the formula L=-1/(im(Y11)*2*pi*Freq), to compute the value of the resistance is the formula R=1/(re(Y11)*2*pi*Freq) correct? Thank you Enea
Hi, I have come up with a design for a 434 MHz loop antenna (23.5mm * 21.5mm) . It is about 1.5mm wide and about 1 mm thick. I want to know how to lay this out in hfss , after laying it out will i be able to extract the parasitic resistance, inductance of the loop and also radiation resistance. Also i want a very narrow bandwidth of a
Hi, I have come up with a design for a 434 MHz loop antenna (23.5mm * 21.5mm) . I want to know if i lay this out in hfss , will i be able to extract the parasitic resistance, inductance of the loop and also radiation resistance. Also i want a very narrow bandwidth of about 4-6MHz. can u suggest me a tuning circuit for this. Thanks
Dear all, How can I de-embed the self-inductance of lumped port in hfss? Thanks.
Maybe the inductance of your feed trace is messing up the result. It sounds like you have a good approach. Maybe try broadside coupled lines (one on bottom of substrate) instead of edge coupled. It may give a more balanced feed and the poles will be concentric around 1 axis. When you import into ADS you will need a balun or a some way of measu
hi I meet with a problem during on-wafer spiral inductor simulation: the inductance and peak-Q-frequency agrees well with the measured results, while the Q-value is almost independent of number of turns, which is a contrast to the sharp decreasing curve by measurement. could someone clue me on this? thx
When I simulate spiral inductor by hfss , I have some questions listed as below. can I get its inductance and Q value in hfss environment ? 2.which solution type should I select Driven Modal,Driven Terminal or Eigenmode ? 3.Because I am trying the 'Air structure' effect, so I want to combine two different air structure heights (...)
Hi, did you try to increase the simulation accuracy? this might help.. also when you increas the groudring which is in series with your inductor, apparently it will increase the inductance.. try to use large metal not just a thin trace as the ground ring.
Dear alll I'm just a newbie in hfss designing. I want to fnd out the characteristic of passive element using hfss (for example Y11 phase, Y11 magnitude, capacitance, inductance) I made a capacitor using LTCC process and then I simulate that using hfss. But the measured data differ from the simulation result. I (...)
Hello, I am interested in calculating the Capacitance (& perhaps inductance) values from a TDR measurement along a 2 inch stripline when rise time of driver is about 70ps. I would also like to confirm and verify these values (approximately) with an hfss stripline model simulated from DC-8GHz. If anyone run into this kind of comparison in the pas
Thanks dopradar, what are the formulas to calculate inductance from S parameter can we follow any standard method to design it. Line calculators are only for straight microstrip lines, how can one calculate the inductance of any arbitrary structure or that particular RFC inductor (you can see these in many circuits) In
Hi all, I am fairly new to EM field simulation. I am trying to simulate a 4-metal layer laminate with drilled vias - the bottom metal is GND. All my vias are shorted together. The objective is to quantify the inductance between the via top metal and the bottom GND plane. Please see the attached model in the zip file. When I define the lumped
I have designed a birdcage coil in hfss and trying to simulate it.However i can never see expected result.I cannot be sure about the connections and boundary canditions.I have some questions. 1_) Can i assign capacitance or inductance to 2D geometry. 2_)Some of my parts are detached, how can i be sure of their the material that th
Hello, I would like to perform a simulation of simple coplanar waveguide structure to obtain a basic parameters like capacitance and inductance per length. I need those results to compare with results of my FEM simulation . Is it possible to simulate those parameters in hfss or CST? I have already basic experience in those simulators. Thanks,
thanks for answering, we can use some simulate tools to caculate the is easy to simulate the microstrip,however,if the line is just single layer copper, what is the characteristic of the line?i think is not the same as a microstrip. when the length is far shorter than lamdar,it is a inductance,but i don
Hi, I wanna simmulate a planar inductor. Normally planar inductors are made of several metal layers conected together by vias. The inductance value is quite easy to estimate, but Q isn't. I wanna know if there is any sofware (Ansoft hfss, for instance) that accurately simulates the substrate leaks, so giving a good approximation of the indu

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