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tranmission zeros of bandpass filter

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prabu_9

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hie..
can anyone pls explain what exactly are the tranmission zeros of a bandpass filter and what role do they play in determining the filter's response ?
thank you.
 

if a filter has no zeros, i.e. all-pole filter, it is a low-pass filter

detailed infomation can be found in books on filter synthesis or network synthesis
 

In a bandpass case, TZ is used for improving near passband rejection of the filter.
 
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    FvM

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In a bandpass case, TZ is used for improving near passband rejection of the filter.
Yes, you get a steeper transition between pass- and stopband.

Transmission charactereristics with real zeros are used in filter prototypes Chebyshev type 2 and elliptic (cauer).
 

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