Question on X-band waveguide
Question on X-band waveguide
(OP)
All, I am trying to identify a section of waveguide. It is X-band. Looking into the waveguide from one end you can see that it tapers with what looks like steps (for lack of a better term) into a small slit about 1mm wide halfway into the waveguide. On the other side of the slit, it expands back to the full size of the x-band. There are four tuning slugs, two for each taper on each side of the slit. Does anybody have any idea what this might be? Thanks -Bill





RE: Question on X-band waveguide
RE: Question on X-band waveguide
RE: Question on X-band waveguide
On either side of the slit, there are two tuning slugs. I just tried uploading a 4.8 Mb video but got a server error.
I'll upload the video to my web site. Try going to www.electronicsrevisited.com/video.MP4
Thanks -Bill
RE: Question on X-band waveguide
I've not seen one exactly like that before, but I presume it's probably a filter (?). Being a two-port passive device rules out many more-complicated possibilities.
Since they're squeezing the RF through a smaller gap, if it's a filter, then probably high-pass (?).
Did I see a part number written on the side?
RE: Question on X-band waveguide
It might be a dielectric test fixture whereby the thickness of the inner section is 0.031" or 0.062" tall (standard dielectric thicknesses). Measurements of S11 and S21 could be used to determine dielectric constant and loss tangent of RF circuit boards at X band.
RE: Question on X-band waveguide
There are numbers on the side but I could not find anything in a search. They are 19200-10548234 Then: MFR-52476 and on the side is stamped: 32763
This was likely from a military application. I don't think it was from a test fixture, I have a lot of them !
Thanks again
- Bill
RE: Question on X-band waveguide
RE: Question on X-band waveguide
I don't think that's what you have. But I mention it just in case it is.