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Resonant frequency chart for a filter using L's and C's

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robismyname

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Resonant frequency chart

Is there a chart that provides the resonant frequency for a filter using L's and C's at 2.4GHz?

If so can some one share the link with me. Also I probably will need help learning how to use it.
 

Resonant frequency chart

Ur question is not clear...

Do u want to know the combination of L's and C's for a filter at 2.4 G...?
 
Re: Resonant frequency chart

Are you really seriously considering a filter with discrete passive components @ 2.4 GHz? Strongly advice to use some transmission line based filter structures at those frequencies, like microstrip filters.
 

Resonant frequency chart

I just used 2.4GHz as an example, (a bad example) - you cant hide ignorance. I am just inquiring about a chart that tells you the combination of L's and C's for a filter at a specific frequency. If not 2.4Ghz then lets say 60Mhz or whatever frequency makes sense. Karote you said that discrete passives are not good for 2.4Ghz but you never explained why, I would like to know why you said what you said for learning purposes.
 

Re: Resonant frequency chart

Lumped filter at 2.4GHz can be done but is tricky. Fringe
efects of the L or C package can produce weird results,
making unuseful. The smaller lumped element package
is the 0402, no sure. This will have a completely different
value as soon is located in the board.
 
Resonant frequency chart

Lumped L's are not good for higher frequencies... Why?

The reactance of an 'L' increases with frequency... XL=L*omega
But as frequency increases, the capacitance between two turns of the inductor oil, begins to dominate the impedance, thus resulting in a decrease in effective impedance! This is due to what is called as the self-resonance of the inductor... Various models of the inductor is to be analyzed for use at high frequencies.

Also if you want to know a chart, you can generate one on MATLAB. You know the formula to compute resonant frequency. Run a loop for L=1nH to 1H, and compute corresponding Cs. Plot them to obtain a chart... Easier done than said...!!!

Regards,

Sidharth. B
 
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