Frequency response of a Low pass Filter ?

how do i plot the frequency response graph from the pair of inductors and capacitors as shown in attached file.

Could you guys just tell me how to proceed in matlab... even an idea of which functions to be used is appreciated..

Thank you..

[garry]

hello guys,

I know the component values of inductor and capacitors(L and C).

Moreover i also know that there is a sharp dip at f= 2.5 Ghz and f=2.05 Mhz..as i am designing a m-derived filter design..

This is the frequency response graph of the circuit i'd posted in the question earlier.

[garry]

the cut-off frequency is 2 Mhz and the plot of frequency response should be from 0 to 4 Mhz.

[garry]

this filter has an infinite attenuation pole at 2.05 Mhz so there is a sharp dip in the frequency response.

Could you please help in implementing this type of filter..

any help is appreciated.

[Josh]

Hi Garry,

Did you ever find a solution to this? I believe I am having a similar situation except much lower frequencies. I have a resonance at about (120 mohm/1 MHz) and secondary for some reason at around (1000 mohm/6 MHz).