Vertical mount connector to stripline - Page 1
Forum section: electronics / rf-microwave

author: jmw
author_rank: Frequent Contributor
timestamp: April 14, 2021, 06:41:36 am
content: How do fancy compression connectors like these actually launch into stripline? Can't find any pictures of real boards, only the following illustration. Is that some kind of filled blind via? What kind of fabrication house can make boards like that?

author: ElizatronicWarfare
author_rank: Contributor
timestamp: April 14, 2021, 09:52:45 am
content: The rear face of the connector reminds me of R&S and Keysight's Ka-band "universal" (hah) adaptors that are basically a compression fit similar to 7mm. Maybe that's what's going on here? The two faces just push together and the imperfections are good enough for K-band?

author: BreakingOhmsLaw
author_rank: Frequent Contributor
timestamp: April 15, 2021, 09:13:17 am
content: These come in two flavours. Spring loaded (more expensive) and a "dumb" variant the just presses into the trace. See:

author: jmw
author_rank: Frequent Contributor
timestamp: April 15, 2021, 03:04:12 pm
content: Right, but how do you get from the surface to the stripline? I guess I could have asked about microstrip-to-stripline transitions in general - how is it done usually?

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 15, 2021, 04:21:46 pm
content: Use a via..?Idunno, if you can't find a datasheet it's a moot point anyway you're sure as hell not going to afford to buy them, if anyone even stocks them?Tim

author: jmw
author_rank: Frequent Contributor
timestamp: April 15, 2021, 04:53:41 pm
content: Well you tell yourself they're reusable so you're actually only buying onceA regular via would create a stub right? And probably one resonant at the frequencies people who buy these things would be concerned about...(edit: FWIW, they're about $20-50 for SMA ones, depending if you want the regular or spring-loaded version)

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 15, 2021, 04:57:28 pm
content: The same people can afford blind vias. You peasants have no imagination.I wouldn't be terribly concerned about stubs anyway, that flange isn't going to mate perfectly. Unless there's supposed to be a gasket in there, or the face is subtly curved or something? I didn't watch the video.Tim

author: BreakingOhmsLaw
author_rank: Frequent Contributor
timestamp: April 16, 2021, 10:37:33 pm
content: Yes, these are stupid expensive. Can't see anyone using them in anything but highest end stuff.You get get swiss-made, tightly-specced, gold plated SMAs for less than 5 bucks. I have a hard time seeing any ROI in using these.But hey, Amphenol is a respectable company, they must have done their homework and see a market for it. I like the board interconnect version of that connector. Stacking RF boards just 3mm apart opens up some serious packaging possibilities. Avionics and defence engineers probably drool over this.https://www.svmicrowave.com/sites/default/files/documents/3mm_Board_to_Board_Interconnects_FINAL.pdf

author: ElizatronicWarfare
author_rank: Contributor
timestamp: April 17, 2021, 09:56:42 am
content: Quote from: BreakingOhmsLaw on April 16, 2021, 10:37:33 pmHghh, me want. You could definitely do some incredible stuff with this.