Copyright: 1996 - 2024
BSEE - KB3UON
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...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
RF design flow - 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.
Below are the old forum threads, including responses to the original posts.
|-- Amateur Radio
Gripes & Humor
-- CAE, CAD, &
Test & Measurement
Post subject: RF design flow Posted: Thu Apr 27, 2006 12:13
Joined: Tue Feb 21, 2006 2:00 pm
Hi gurus, Is there some resource on the web I can use to learn
more about the RF development flow? Basically I'm interested in knowing
more about system level analysis using excel or some kind of simulation
tools without getting too detailed into the circuit matching and layout.
Is there any future in doing this? My background is in DSP and wireless
communications simulation. Thanks.
subject: Posted: Fri Apr 28, 2006 5:17 am
Joined: Mon Jun 27, 2005 2:02 pm
The process of designing an RF system usually
starts with a concept of the system. Once you have a clear concept,
then you continue with a block diagram. Each of the building blocks
have its own RF parameters like: Gain, Noise Figure (NF), 3rd Order
Intercept Point (IP3) etc. You cascade the building blocks and assign
to each of them its respective RF parameters. Then you can use an EXCEL
sheet and calculate the cascaded or composite result for each of these
parameters like Cascaded Gain, Cascaded IP3 etc.
this can be done by EXCEL or by another RF tool like Syscalc etc. This
tools contain the Friis formulas for cascading IP3 and NF.