can anyone help me to design a tunalbe band pass filter with constant bandwidth which can be digitally controlled to change the center frequency? i will be thanksfull

 

can you help me in designing a tunable band pass with constant bandwidth?

 

Our policy is that each poster open a new topic for a new question. When you hijack an existing post, it can be confusing as to how and who to rely to.

This is the original thread - http://forum.allaboutcircuits.com/showthread.php?t=17531

You might state the upper and lower limits of the tuning limits, as well as filter bandwidth. What progress have you been able to make on your own?