RF Test Board

[danadak]

Hi, I am looking for some ideas, layout, for an RF test board, using vertical
SMA connectors. General ideas, for testing passives, maybe some low pole
count filter solution's, working with VNA to establish characteristics.

Layout in Eagle would be a plus.


Regards, Dana.

[tggzzz]

Make some generic 3-component and 6-component T-filters and pi-filters using 0805 SMD R,L,C. Make sure the track has 50ohm impedance (or 75ohm, I suppose).

Make a long track and see how close it is to 50ohms.

[Z80]

It depends on what frequencies you want to measure up to and what accuracy you are after.  For low frequency stuff (up to a couple of hundred MHz) you could make something like this: http://www.sdr-kits.net/Webshop/products.php?84&cPath=5.  It shouldn't take long to whip up something like that in Eagle using a vertical footprint for the SMA connectors.  You can make and characterise your own SOLT standards as described in the PDF.  For higher frequency / high accuracy though you will start to get into custom shielded enclosures
controlled impedance lots of $$$ etc.

[RadioNerd]

Must the connectors be vertical or are you also OK with edge mount SMA connectors?