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A simple question regarding blocking capacitors - RF Cafe Forums
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Below are the old forum threads, including responses to the original posts.
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Post subject: A simple question regarding blocking capacitors
Unread postPosted: Mon Jul 05, 2004 1:07 pm
simulation, how much value should be assigned to the blocking capacitors
on the input and output ports? Say, if I let the capacitor on the input
be 1pF, then I can get one result, but if I change it to 1nF, the result
will be another story. How to decide the proper values to use? Thanks
Tue Jul 06, 2004 9:27 am
What frequency are You using. In simulation
You can put as high capacitance as You wich. Just to achieve blocking
effect. In real life You have to take into account other thing like
resonaces, losses, parsitics and many more.
Unread postPosted: Tue Jul 06, 2004
What frequency are You using. In simulation You can
put as high capacitance as You wich. Just to achieve blocking effect.
In real life You have to take into account other thing like resonaces,
losses, parsitics and many more.
Unread postPosted: Sun Jul 11, 2004 6:35 pm
way to think about blocking capacitors is as single pole high pass filters.
You want your response to be well into the passband if at all possible.
Unread postPosted: Tue Mar 15, 2005 5:25 am
want to add that should be careful in using large capacitance values
for blocking cap, as higher capacitance values, has lower resonance
frequency, so that it might be inductance instead at frequency higher
than f resonance :wink: