General issues (iFilter, .syf and EM simulation environment)


I have a few general questions, ranging from corresponding EM simulation symbol creation and design of network environment. I would be really grateful if someone could take some time to respond to these in as much detail as possible.

(1) I use iMatch Wizard in iFilter to design the matching network of entry for the LNA and PA. But I noticed that I get the best correspondent for the LNA (verified by Zin measurement at the source of the device with the included matching network) when I do the correspondence for the combined impedance. However, in the case of the PA, this happens only if I design the network with the correct impedance and not its complex conjugate. Anyone know why this is the case? Or by popular practice, in which case the combined complex should be used for the corresponding network design?

(2) how can I create my own .syf file to be used as a symbol for a system I design? If I have the .syf how do I appear in my list of existing library of symbols?

(3) in the EM simulation environment, how to decide the spacing of the grid? Yet once, EMsight I cannot add ports in the structure of Employment, if the structure is not aligned with the grid. How to manage the grid alignment so that the ports are attached without worries? Also, in the EM structure is an available at the entrance x and is coordinated to a partciular shape/structure so that it will sit in the coordinates and will allow me to build the forms around him?

I apologize for the length of the questions but get these deleted will help a lot!

Thanks in advance!

1. it is the plug.  You are probably using the gamma to the research in the output in the design of LNA (so your load must be combined), but using the desired gamma (manufacturer?) load design PA

2. up to the v11, it's probably easier to just import the .syf in each project where you want to use: project > Circuit symbols > import symbol.  In v11, just help > show files/directories... > AppDataUser, create a folder named symbols and empty the file .syf in there.

3 EMSight is ideal for the subset of the problems to which it applies, but otherwise it's pretty restrictive.  The ports must be on the limit, either on the walls or up/down drivers.  The latter requires a via, which does not incorporate to turn off automatically. etc.

X and are grid sizes are defined in the enclosure.  When you draw, you can press the tab key to enter the coordinates manually.  However, I recommend that you check the mesh on the structure of your EM before you simulate to make sure that you are not shorting adjacent shapes, or decompose adjacent metal.  Download AXIEM, it blows EMSight out of the water.

Tags: NI Products

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