- This topic has 32 replies, 13 voices, and was last updated 8 years, 9 months ago by
FAYIQA NAQSHBANDI.
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AuthorPosts
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April 15, 2016 at 5:44 pm #36974
gaurav rajput
ParticipantDear Forum Members,
I have question and i expect the forum members to respond to it with appropriate information…
Can someone please explain On Which Factors Cut Off Frequency Of Rectangular Low Pass Filter Depends ?
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April 15, 2016 at 5:46 pm #36975
gaurav rajput
ParticipantHope to see responses soon..
Thanking in anticipation..
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April 15, 2016 at 6:18 pm #37024
Manoj Kumar
ParticipantHi all,
Well it basically depends upon the application.. In general, the cut-off frequency of any low-pass filter depends on 2 parameters: internal resistance and its capacitance.. If you consider the case of Bessel filter, the transfer function depends on two factors: insertion loss and order parameter of a normalizing constant.. Hope it helps..
Regards
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April 16, 2016 at 4:48 am #37123
jyoti raina
Spectatorhi gaurav sir..
i agree with manoj sir..the cut-off frequency of any low-pass filter depends on 2 parameters: internal resistance and its capacitance.. If you consider the case of Bessel filter, the transfer function depends on two factors: insertion loss and order parameter of a normalizing constant..
it should help you..
with regards
jyoti raina
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April 15, 2016 at 6:24 pm #37034
gaurav rajput
ParticipantHi Manoj,
Thanks for the response…
Regards
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April 19, 2016 at 3:31 am #38294
FAYIQA NAQSHBANDI
SpectatorHI GAURAV..
I agree with manoj that the cut-off frequency of any low-pass filter depends on internal resistance and its capacitance…
Regards
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April 16, 2016 at 1:47 am #37101
Manoj Kumar
ParticipantHi Gaurav,
You are welcome… Hope you got the desired information..
Regards
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April 16, 2016 at 2:03 am #37106
gaurav rajput
ParticipantHi Manoj,
Well indeed i got some idea…
Regards
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April 17, 2016 at 6:04 pm #37708
shafeen al yasin
ParticipantHi Gaurav,
I agree with manoj that cut-off frequency of any low-pass filter depends on 2 parameters: internal resistance and its capacitance.Regards
Shafeen
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April 16, 2016 at 2:42 am #37110
Manoj Kumar
ParticipantHi Gaurav,
Glad to know you got some information on the forum..
Regards
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April 16, 2016 at 4:46 am #37122
Ubaid Bhat
Participanthi all…
i really appreciate the efforts put by manoj to solve the querey…
best regards -
April 16, 2016 at 4:49 am #37124
jyoti raina
Spectatorhi all..
thanks for sharing the info..
regards
jyoti -
April 16, 2016 at 4:59 am #37130
gaurav rajput
Participanthi all,
Thanks for your responses.. Really apreciate your efforts… Thanks optiwave Forum… Cheers
Regards
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April 16, 2016 at 5:19 am #37149
jyoti raina
Spectatoryou are welcome gaurav sir..it indeed is helpful..
all the best
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April 16, 2016 at 5:01 am #37132
Manoj Kumar
ParticipantHi Gaurav,
You are welcome.. And yes thanks to optiwave forum…
Regards
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April 16, 2016 at 5:22 am #37150
deepak jha
ParticipantHi Gaurav,
I agree with manoj sir…the cut-off frequency of any low-pass filter depends on 2 parameters: internal resistance and its capacitance.. Hope you got the answer..
Regards
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April 16, 2016 at 5:37 am #37160
Remo De Suza
ParticipantHello Gaurav.
As far as your query is concerned i would like you to go through the link. I has been already discussed there. Hope it helps you to some extent.Regards
Remo De’Suza-
April 17, 2016 at 2:10 pm #37544
Domail Singh
ParticipantHi Remo
The link you have provided is very helpful. Thank you.With Regards
Domai
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April 16, 2016 at 5:39 am #37163
Remo De Suza
Participant -
April 16, 2016 at 6:08 am #37181
Ankita Sharma
ParticipantHi Remo,
Thanks for the information…
Regards
Ankita-
April 16, 2016 at 6:44 am #37192
Remo De Suza
Participanthi Ankita.
You are welcome. CheersRegards
Remo
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April 16, 2016 at 7:41 am #37206
Rajguru M. Mohan
ParticipantHi Gurav,
First i want to discuss about the cutoff frequency of filter.
A cutoff frequency, also called corner frequency, or break frequency is a boundary in a system’s frequency response at which energy flowing through the system begins to be reduced rather than passing through.
Cutoff frequency is most important parameter in case of filter.
The cutoff frequency of a low pass filter:
Cut-off frequency, Fc= 1/2Ï€RC, so in this case it depends upon resistance,R and capacitance,C.
The product of the resistance and capacitance (R×C) is the time constant (τ); it is inversely proportional to the cutoff frequency fc,
, in the case of the Chebyshev filter it is usual to define the cutoff frequency as the point after the last peak in the frequency response at which the level has fallen to the design value of the passband ripple.In this case, the filter has a passband gain of -R2/R1 and varies with it.
Hence, cutoff frequency depends upon various parametres like resistance, capacitance, order of filter, time constant and others.
Hope this will help you.
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April 16, 2016 at 7:46 am #37207
Rajguru M. Mohan
ParticipantFor more information on Factors which affect Cut Off Frequency Of Rectangular Low Pass Filter.
I think rectangular Low pass filter is ideal low pass filter or sinc filter, which removes all frequency components above a given cutoff frequency, without affecting lower frequencies, and it has linear phase response. The impulse response of this filter is a sinc function in the time domain, and its frequency response is a rectangular function.
http://www.labbookpages.co.uk/audio/firWindowing.html
http://www.rfwireless-world.com/source-code/MATLAB/FIR-Low-pass-High-pass-filter-rectangular-window-matlab-code.html
http://www.mathworks.com/matlabcentral/fileexchange/46811-two-dimensional-hi-pass-and-low-pass-rectangular-image-filter
https://www.ee.iitb.ac.in/~esgroup/es_mtech02_sem/es02_sem_rep_arojit.pdfWhen we know how to design Rectangular Low Pass Filter, we will understand the factors which affect Cut Off Frequency of it.
Regards,
Rajguru-
April 17, 2016 at 3:14 pm #37578
Domail Singh
ParticipantHi Rajguru
I agree with oyu. The links you have provided are also very apt. I hope these help gauravRegards
Domail
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April 16, 2016 at 1:45 pm #37235
nagesh kuknoor
ParticipantHello Gaurav,
I agree with Rajguru that A cutoff frequency, also called corner frequency, or break frequency is a boundary in a system’s frequency response at which energy flowing through the system begins to be reduced rather than passing through. I hope this should help you.Regards
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April 16, 2016 at 3:01 pm #37262
Remo De Suza
ParticipantHi All,
I think very valid information being shared by all. This should help Gaurav.
Regards
Remo -
April 16, 2016 at 3:36 pm #37273
Ankita Sharma
ParticipantHi Rajguru,
Thanks for the information… I really appreciate your valuable efforts and time…
Regards
Ankita -
April 16, 2016 at 4:29 pm #37308
Manoj Kumar
ParticipantHi Rajguru,
Very valuable and informative description you have provided..
Regards
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April 17, 2016 at 3:08 pm #37575
deepak jha
ParticipantHi all,
A very valuable information provided by all the members of the forum…
Regards
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April 17, 2016 at 4:02 pm #37635
Rajguru M. Mohan
ParticipantThank you Nagesh, Manoj, ankita
For your appreciation and agreement on my points and comments.
The above discussed factors on which cutoff frequency depends are important.
In addition to these there are many factors on which cut-off frequency depend.
It depends upon type and order of filter and also on whether it is analog or digital type.
Or it is designed using op-amp or simple resistance and capacitance.Regards,Rajguru
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April 17, 2016 at 4:10 pm #37640
Domail Singh
ParticipantHi Rajguru
Thank you for sharing the information. It shall be very important in this regard. Hopefully it is beneficial for all.Regards
Domail
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April 17, 2016 at 5:42 pm #37692
Rahul Tiwari
ParticipantHi Domail,
I agree with you that the information on this discussed topic shall be beneficial for all…
Regards
Rahul Tiwari -
April 17, 2016 at 5:46 pm #37694
Rahul Tiwari
ParticipantHi Rajguru,
Thanks for the links.. Your efforts are truly worth appreciating…
Regards
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