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hi,
there is a rule of thumb:
1mm thin wire equals 1nH inductance
should be easy to calculate admittance and
even calculate or model with this
hope this helps
mac
hi
have a look at maxim homepage they have some integrated vcos,
orat analog devices -> adf4360-x series with adf3460-1 especially-
depends on requirements, otherwise use a vco and
one of those single chip pll circuits
mac
Re: StarTrek Digital LNB
Right,
first of all, nr 6 seems to be the mixing Diode - most often a pair of two, mixing input and Lo frequency.
to generate these 3 frequencies what comes into my mind is to modify the hole LNB or use it in reverse as an up converter -
generate 450mhz, 250mhz...
Re: StarTrek Digital LNB
Hi,
don't know what you mean-
but the ic you can see in the atached photo is a 8 bit DACPOT (s9408)
the rest ist just mixer diodes, power regulator and passive stuff,
no magic about it
as for the LOs:
as far as i know, in LNBs they are running free with very high Q...
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