Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: seeking millimeter wave
collaborators for NASA research prop
Posted: Sat Apr 09, 2011 2:43 pm
Joined: Wed Oct 17, 2007
Location: Oregon, USA
There is an open NASA / NIAC BAA for game changing
technologies, and there is some interest in wireless power
1) how can we increase / maximize DC
to RF conversion efficiencies (35 - 350 GHz)?
what power efficiencies might be possible in the short
term, medium term and long term.
3) About what
level of investment would be required to improve device
and chip conversion efficiencies ? Over what time frame ?
4) what technical approaches might there be ?
5) for an example of out of the box thinking: I hear that
the losses in millimeter wave MMIC chips are a
combinationbof dielectric losses and skin effect
dissipation in conductors.
In the case of the
latter, do you think there might be potential tobreduce
losses via employing superconductors (instead of
Since about 1993, the highest
temperature superconductor is a ceramic material
consisting of thallium, mercury, copper, barium, calcium
oxygen (HgBa2Ca2Cu3O8+δ) with Tc = 138 K.
There could be funding via NAIC BAA to pursue such
Charles F Radley -
Assoc Fellow AIAA
USA Telephone: +1-551-579-4686
Mobile (Sprint): +1-503-320-3529
Yahoo IM: CFRJLR