Realization of Some Novel Transconductance Filters
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چکیده
This chapter is devoted to the realization of some novel active circuits by using transconductance amplifiers. The transconductance amplifier can be realized by the widely used device Op-Amp and specially designed operational transconductance amplifier (OTA). By using single Op-Amp in one circuit itself we can get two filter responses. The first circuit realizes first order low pass – high pass response and the second one realizes second order high pass-band pass filter response. The quality factor Q of the second filter realization is low. The low value of Q is used in systems for which damping is important such as image frequency rejection and for lower bass in audio systems. It can also be used at the first stage of a cascaded filter. All the proposed realizations have low sensitivity to parameter variations.
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