Can iget help how can i design four port direction coupler using a microstrip line ?

[foadsf]

I got I all my calculations and simulation graph in maicrowave office, however i have use Altium designer to lay out the designs for fabrication?. actually my experience in Use Altium designer is poor ?if one can show me how can get it the schematic and layout?
Thank you

 

[Darktrax]

Fortunately, you do not have to do huge simulations to get the basic design information on directional couplers.
Before even you use Microwave Office, look at **broken link removed**

Then in Microwave Office, look for Open->Examples, and offer the keyword "coupler".
You will find various couplers directional, even though the word "directional" may not be there.
e.g. the "Lange" type is a directional coupler.

If it is layout planar type, then there are edge-coupled microstrip lines as MWO components.

Hint: Keep in mind that making a directional design in microstrip, and including a topside dielectric layer or even a layer a with floating topside "groundplane", (a bit like sort-of stripline), can have a good effect in equalizing the odd-mode and even-mode impedances. A floating top dielectric over the coupled regions can give a better performing coupler. This is stuff I came across long ago, but take care.. you need to simulate carefully to get this right!

MWO and it's layout are devoted to EM simulation, not especially to manufacture layout. Therefore the process of setting up the drawing layers, and exporting layout information (Gerber or IGES etc) to get it made is somewhat awkward, to the point that if you have the layout dimensions, you might want enter them in a straightforward PCB layout tool like Altium, or maybe the free one "Layout Editor" from Jurgen Thies.

Have a look at --> https://www.layouteditor.net/

 

[foadsf]

thank you, however ineed know how to creat schematic a and converted to lay out in altium

 

[Darktrax]

If you managed to create a schematic in Microwave Office, and do a simulation, then you should have no problem in making a layout in Altium or any other PCB layout. Even without a schematic, you can lay copper tracks of desired width, and force spacings.

In Microwave Office, as you add to the schematic, at the same time, you can see the layout if you display it.
You can re-arrange the layout so the parts connect properly. At the very least, you need to see the shapes and dimensions of the coupler parts, even if all you want to do is get the measurements of the widths and gaps.
At a pinch, you can even do without that, and simply note the values on the schematic, to transfer to any layout tool.

In the PCB layout (Altium, whatever), if you need a schematic at all, you can use any trivial single-ended component, eg. a pin to be the ends of trivial single trace connections. 4 pins, connected with 2 wires. Move to layout, and you can make them the correct width and spacing. You need also to know enough about microstrip substrate and connection port lines to complete the item.

Honestly, you can get there without visiting Altium at all, but the nature of your question implies you would need to get some experience (learning curve) with the PCB layout tool. If you need that, then I suspect you will need similar experience in using Microwave Office first. MWO does deliver a layout. There seems little point manually re-drawing it with a different tool that you might not yet know how how to use.

 

[foadsf]

Honestly, you can get there without visiting Altium at all, but the nature of your question implies you would need to get some experience (learning curve) with the PCB layout tool. If you need that, then I suspect you will need similar experience in using Microwave Office first. MWO does deliver a layout. There seems little point manually re-drawing it with a different tool that you might not yet know how how to use.[/QUOTE]


I have to use Altium because, i have to send the lay out to my tutor to do fabrication. and after that do my measurement that i cant do my report.
how can i use same lay out that i have done in microwave office or schematic and use it in altium.

 

[Darktrax]

OK - First thing is you seem to have found sufficient in the components to make and simulate a schematic. You might have used one of the coupler structures already there.

Next - still using Microwave Office, you display the layout. Explore some tutorial examples on how to add to and edit layout. You do not have to use all the automatic features, you might just use simple 50-Ohm microstrip tracks. Do explore these enough to get used to how adding stuff or modifying the layout is automatically shown in the schematic and vice-versa.

Once you have a view of the layout, you can use Altium to make the same layout. It may be possible to save some time by exporting the layout drawing in one of the common formats - DXF or GDSII maybe. "Schematic --> Export Layout" does it. Altium may be able to import such a format, for you to use in creating a component. I do not have Altium available.

Probably things will go faster if you simply print out, make notes, whatever, of the main features of the coupler. Lengths, trace widths, spacings etc. and know what is the correct strip width for a 50 Ohm line on the substrate you choose. Then, enter the coupler layout in Altium. One way might be to create a component called "coupler", and edit its footprint, just as if you were setting out pads for a new IC. There may even be Altium coupler components already there that can be copied, renamed, and then messed with (edited?) into having the same track layout as you figured from Microwave Office.

Now, using the component, you can add connection tracks, board outline, etc, and you will be able to specify the widths, and have a groundplane and substrate thickness. You may not have to do this step at all if you included all that stuff before it got exported. Maybe submit the whole Altium file. All the above is just my approach suggestion. It is what I have to guess is possible. You may have to vary the method - depending on what you experience on the way.