use 0805 or 1206
capacitors with low values (10pF or less) with white ceramic (NPO
material , low RF losses)
capacitors are glued
with "Velpon" ( a dutch brand) glue, don't use cyanoacrilate like "one
second glue"
tune for minimum smoke
and maximum power with a woodenstick, use evantually a ceramic trimming
stick for
determing the spots where a capacitor can be placed. ( fast scan
for sensitive places)
a spectrumanalyser for
this tuning is prefered above a wideband powermeter, oscilations can be
seen on a analyser
I used a HP141T with 18 GHz oplugin and a hp8620 sweeper with
8-12 ghz plugin as signalsource
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