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Discussion Groups | Comp.DSP | Frequency response of PI filter

There are 6 messages in this thread.

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Frequency response of PI filter - pinku - 2007-07-10 09:29:00

Hi,
Is there any tool which gives the frequency response of the PI filter
(where I can enter the resistance and Capacitor values).


Thanks and Regards
Praveen


Re: Frequency response of PI filter - Clay - 2007-07-10 15:31:00

On Jul 10, 9:29 am, pinku <praveenkumar...@gmail.com> wrote:
> Hi,
> Is there any tool which gives the frequency response of the PI filter
> (where I can enter the resistance and Capacitor values).
>
> Thanks and Regards
> Praveen

A great tool for this is pencil and paper. Write down the "s"
equations (these come from Laplace transforms) for the proportional
and the integral parts, sum them and then evaluate the sum at s =j*omega.


Clay


Re: Frequency response of PI filter - Jerry Avins - 2007-07-10 22:52:00

pinku wrote:
> Hi,
> Is there any tool which gives the frequency response of the PI filter
> (where I can enter the resistance and Capacitor values).

How many sections do you expect to cascade? For only 2 or 3, it's easy 
to write the loop equations as a function of s. (Don't forget source ans 
load impedances.)

Jerry
-- 
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯


Re: Frequency response of PI filter - Krishna - 2007-07-10 23:05:00

On Jul 10, 6:29 pm, pinku <praveenkumar...@gmail.com> wrote:
> Hi,
> Is there any tool which gives the frequency response of the PI filter
> (where I can enter the resistance and Capacitor values).
>
> Thanks and Regards
> Praveen

Maybe you can try RFSim 99. The download path available @
http://ctech.e-technik.uni-ulm.de/ctech/bin/view/CTech/WebSightings
http://www.practicalrf.com/RFSim99.zip

Krishna
http://dsplog.blogspot.com


Re: Frequency response of PI filter - pinku - 2007-07-11 05:51:00

On Jul 11, 8:05 am, Krishna <krishna.pil...@gmail.com> wrote:
> On Jul 10, 6:29 pm, pinku <praveenkumar...@gmail.com> wrote:
>
> > Hi,
> > Is there any tool which gives the frequency response of the PI filter
> > (where I can enter the resistance and Capacitor values).
>
> > Thanks and Regards
> > Praveen
>
> Maybe you can try RFSim 99. The download path available @http://ctech.e-technik.uni-ulm.de/ctech/bin/view/CTech/WebSightingshttp://www.practicalrf.com/RFSim99.zip
>
> Krishnahttp://dsplog.blogspot.com

Hi,
RFSim99 tools plots the S-parameters vs Frequency.
I am not able to understand which S-parameters (S11,S12,S21,S22)
corresponds to filter frequency characteristics.
S parameters reflect the transmission and reflection co-oefficient how
is its mapping to filter characteristics.

Regards
Praveen


Re: Frequency response of PI filter - pinku - 2007-07-11 09:57:00

On Jul 11, 2:51 pm, pinku <praveenkumar...@gmail.com> wrote:
> On Jul 11, 8:05 am, Krishna <krishna.pil...@gmail.com> wrote:
>
> > On Jul 10, 6:29 pm, pinku <praveenkumar...@gmail.com> wrote:
>
> > > Hi,
> > > Is there any tool which gives the frequency response of the PI filter
> > > (where I can enter the resistance and Capacitor values).
>
> > > Thanks and Regards
> > > Praveen
>
> > Maybe you can try RFSim 99. The download path available @http://ctech.e-technik.uni-ulm.de/ctech/bin/view/CTech/WebSightingsht...
>
> > Krishnahttp://dsplog.blogspot.com
>
> Hi,
> RFSim99 tools plots the S-parameters vs Frequency.
> I am not able to understand which S-parameters (S11,S12,S21,S22)
> corresponds to filter frequency characteristics.
> S parameters reflect the transmission and reflection co-oefficient how
> is its mapping to filter characteristics.
>
> Regards
> Praveen

Hi,
How balanced Pi attenuator configuration be changed to unbalanced PI
attenuator configuration?

Thanks and Regards
Praveen