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ben-wpan/atrf/ecn/ecn0001.txt
Werner Almesberger 2406f674f5 More RF research for the ECNs (balun and layout)
- atrf/ecn/ecn0001.txt, atrf/ecn/ecn0002.txt: changed ECN format to
  separate title from body by two blank lines and, where a conclusions has
  been reached, put it into a section separated from body also by two blank
  lines
- atrf/ecn/ecn0003.txt: researched balun design and availability
- atrf/ecn/INDEX, atrf/ecn/ecn0004.txt: new ECN: Take into account layout
  considerations for RF
- TODO: removed item covered by ECN0002
- TODO: removed bug fixed in f32xbase commit
  79396b17772639cea615d1c87870d55f08c11850
- TODO: added reference to ECN0003
2010-08-26 15:41:14 -03:00

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Adjust balun component values
Some of the components specified in the schematics were not at hand
in my lab and were thus replaced with similar parts. Furthermore, the
LED color was changed to ease visual identification:
Component Norminal Board 1 Board 2
--------------- --------------- --------------- -------------------
LED (D1) red red red-orange
C6/C7 0.82 pF 0.7 pF 0.9 pF
L2/L3 4.3 nH 4.7 nH 4.7 nH
The resulting spectrum should be examined to determine which variant
performs better. Note that the discrete balun circuit shall be
replaced with an integrated balun later on.