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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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General question on Packaging and circuit Board - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. If the folks at phpBB would release a version with integrated sign-in from the major social media platforms, I would resurrect the RF Cafe Forums, but until then it is probably not worth the effort. Regardless, there are still lots of great posts in the archive that ware worth looking at.

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JM
Post subject: General question on Packaging and circuit Board Posted: Fri Oct 06, 2006 4:46 pm

Lieutenant

Joined: Fri Jun 30, 2006 9:56 am
Posts: 1
Location: Blacksburg Virginia
Hello everybody,

I have an open and general question regarding material such as Roger3000, LTCC or Ceramic..
I have heard people complaning about those material at frequency above 30GHz, either for the loss, for the unstable lateral dimensions or price.
Does anyone has experience with those type of material for either packaging or circuit and could give me more details.. What problems do people usually face with those type of materials?
Is there a frequency at which there is no solution for chip on package or it is to expensive(above $100/inch^2)?? or just to much twinking required???

I hope my question is not to vague... and there is some kind of response...

Thank you
JM

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