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Connectors with multiple RF feethroughs

Does anyone know of a connector that'll pass multiple 8+) RF signals with specs somewhere in the ballpark of 100kHz-3GHz, isolation between signals at least 80dB or so? I'm aware of the FCT connectors

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that Mouser sells, and this is what I intend to use for "box to box" connectivity, but for PCB to PCB connectivity within a box, I was hoping to find something a little denser (FCT gives you 7 coax connectors in a DB-37 sized shell).

Samsung and friends have high speed connectors that typically have a ground plane 'down the middle' of a two row connector, but the data on their website seems squarely aimed at digital signals where a couple percent crosstalk is fine; in my case there can readily be a 0dBm signal right next to one that's -80dBm, so the ~ 20-40dB isolation between signals is far from adequate. I could insert interstitial grounds between the signal pins, although I was hoping to find something off-the-shelf that already comes with data, rather than having to sit down and sweep something like the Samtec connection on my own.

Thanks,

---Joel Kolstad

Reply to
Joel Kolstad
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Amphenol makes the Fakra SMB connectors that are available in dual configs.

That's nowhere near the density of the coax-in-a-D-sub-shell you already found.

Amphenol used to make a connector that goes on a PCB like a IDC header but the cable housing that plugged into it took high-density coaxial cables. Haven't seen this in many years.

More off the beaten track, LEMO

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makes some really high quality multi-coaxial (at least 8-way) connectors but they won't be cheap or particulary easy to source. I've seen these used on everything from high-energy physics instrumentation to medical instruments.

Tim.

Reply to
Tim Shoppa

W. L. Gore makes (or used to make) insanely small, high-performance coax (the dielectric is basically Gore-Tex). If they don't have connectors for it they should know who does.

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Reply to
Tim Wescott

Joel, you're aware that you'll never get 80dB isolation at 3GHz with flexible cable ? Even double shielded leaks more. Semi-Rigid is not everyones favourite.

Rene

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Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net
Reply to
Rene Tschaggelar

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