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19 Threads found on edaboard.com: Rlc Boundary Hfss
hello.. im designing frequency reconfigurable patch antenna at frequencies 2.45,5.5 and 7.5GHZ in hfss using pin diodes. i have assigned lumped rlc boundary to pin diodes.but im not getting exact frequency resonance. can anyone help me how to use pin diodes is biasing also required for pin diode??
If you included a picture and described your BCs, it might be easier to double check your work. From what you described, it sounds like you are on the right track making 2D structures and assigning lumped element rlc boundary conditions. It is correct to connect the series ends of the T to the core conductors of the microstrips and the parallel por
Hi, I have a design with 2 waveports and 1 lumped rlc surface that simulates a capacitor. I have changed the rlc surface into a lumped port to have a 3x3 Z matrix, this way I can change the values of the lumped capacitor in post processing and reduce the 3x3 matrix down to a 2x2 matrix : V1 = Z11*I1 + Z12*I2 + Z13*I3; V2 = Z21*I1 + Z22*I2
I tried to make a S11 based measurement of a chip capacitor in hfss (simulated measurements) I made a 50 Ohm microstrip line of layered impedance rectangles, put a rectangular patch at the end and applied 0.55 pF capacitive boundary to it. Other side of the capacitor is shunt with another vertical rectangle with perfect conductor layered impedan
I'm not sure exactly what you're doing, but I can explain how to use a lumped rlc boundary in hfss and set its resistance to 100Ω. Regarding the current line (for a lumped rlc boundary), you just set the starting point at one end of the resistor and the end point at the other end (touching the edge of (...)
you need to right click on an object an assign boundary>impedance OR Lumped rlc OR Finite impedance. I have never used these options but I am sure you can find the best one for yourself with a quick google search.
Hi, lumped elements are designed like lumped ports in HFFS. First you have to create a face (rectangular, ...) between the two connection points of your lumped element. Then select the face and choose 'Assign boundary' -> 'Lumped rlc'. There you can choose the parameters (R, L, C). At the end you have to create the 'Current Flow Line' which gives
draw a plane and define it as rlc boundary condition
Third, there are two things you can do. 1) add an rlc boundary with the desired capacitance in series with the port and loop to cancel the loop inductance. 2) Use Designer to directly link a capacitor to the pin created by the lumped port. I think, if you use this method the S11 parameter is only valid at
I have had similar problems trying to model shunt caps as lumped elements in filter structures, though I have occasionally had success. From my understanding, the rlc boundary should have the integration line flowing From the lower potential(gnd) Towards the higher potential (trace), but I think that adjusting the width of
you can draw a two dimensional sheet. Assign it a boundary condition of rlc. then you can assign a capacitance value.
1 - For a wire, draw a cylinder, and specify a radius. You can also use a rectangular sheet. 2 - For the boundary, create a flat square at the location of your inductor. make it as small as possible, and assign boundary (Lumped rlc) 3 - make your box or radiation boundary, change the material to your medium. after that, (...)
Hi, I use Lumped rlc boundary condition but I want to know if there is any way to import a set (array) of R L and C versus frequency? I mean a s
Hi! If I simulate the RFID tag whose impendance is R-jX, and reach to match impendance, how can I set up the port whose impendance is R+jX . The way I use is setting up the port to the R and another is seeting up rlc lumped boundary. is it correct? May someone have the example as this way? thanks ruey
hi in general in hfss for design capacitances we have problem, but usually we can simulate capacitace with one boundary condition plane. you must first in where you want to have capacitance draw a squre plane, then select this plane and assigne LUMPED rlc boundary to it. you can simulate your real capacitance with R and (...)
yes, you can put it inside the computational domain (air box), I didnt see any problem. for CPW rlc termination, I suggest this structure: Regards,
Hello, You have an open circuit. The sheet named "resistor" has no boundary assigned to it. I suppose you ment it to be a Lumped rlc boundary. Double check your model by clicking the hfss menu and choosing "boundary Display (Solver View)". Itai
Hello everyone, I am designing a power divider in hfss and need to use a resistor for the same. Does the Lumped rlc boundary condition let me do something like this? I read the explanation in the tutorial and it does seem like the tutorial says that but wanted to make sure. Has anybody worked with this kind of thing before? Ananth.
Create a 2D object (such as reactangle) and set in Lumped rlc boundary condition. notice that you must define a Current line for it.