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A 4th order Chebyshev complex filter with stop band zeros at the DC point for low-IF receivers' applications using 0.18μm CMOS technology is proposed in this paper. Based on capacitor-OTA integrators, the designed ladder filter uses resistors instead of capacitors to realize the transmission zeros. The complex filter has a 0 to 48dB tunable gain (6dB per step) and over 65dB DC-offset rejection. A...
A new voltage-mode three inputs and one output universal biquadratic filter with high-input impedance employing six simple operational transconductance amplifiers (OTAs) and two grounded capacitors is presented. The proposed circuit offers the following features: realization of all the standard filter functions, that is, highpass, bandpass, lowpass, bandstop, and allpass filters; electronically tunable...
This paper presents design procedure of the low-frequency integrated low-pass filter suitable for integrated circuit fabrication. Design methodology is concentrated on the lowest power dissipation while retaining all other electrical specifications. It can be concluded that this filter should be a 5th order elliptic filter using signal flow graph method and it is easy to optimize dynamic range of...
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