Setting Sheet Size of Lumped RLC in HFSS

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The size of the lumped RLC in HFSS significantly affects simulation results, particularly in terms of resistance and impedance matching. Users are seeking guidance on how to set the sheet size to minimize its impact on the simulation. It is noted that the component value is inherently dependent on the area specified, meaning the shape and size must reflect the physical component for accurate results. Adjusting the size of the lumped RLC will alter the simulation outcomes, making it crucial to define the dimensions appropriately. Ultimately, achieving accurate simulation results requires careful consideration of the lumped RLC's size and properties.
Melon
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Hi Guys
When I use lumped RLC in HFSS, I find that its size can influence the simulation result. How do I set the sheet size of lumped RLC? Make it square is better? Thanks.
 
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I do not use Ansys HFSS, but I would question the 2D? size of the Lumped RLC in wavelengths.

If you were using Lumped RLC to define a resistance, then size and the resultant resistance would change the termination and impedance matching.
 
Baluncore said:
I do not use Ansys HFSS, but I would question the 2D? size of the Lumped RLC in wavelengths.

If you were using Lumped RLC to define a resistance, then size and the resultant resistance would change the termination and impedance matching.
Yes, I set lumped RLC on 2D sheet in HFSS. And when its size changes, the result changes too. So I want to know how can I set a resistor/inductor/capacitor in HFSS without the influence of sheet size.
 
Melon said:
So I want to know how can I set a resistor/inductor/capacitor in HFSS without the influence of sheet size.
I do not believe you can. Where the lump has properties specified per unit area, the component value will be dependent on the area. You will need to define the component shape and size as the area of the physical component to be used later in manufacture, and then give it the appropriate properties to get the value required.
 

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