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In this paper, a linearity improvement technique is proposed for a low-distortion Gm-C bandpass filter operating in high IF ranges. The proposed transconductor eliminates Gm" value at the output by superposing the opposite non-linear behaviors of two differential structures in parallel. For the bandpass filter, instead of conventional biquad structure, a resonant-coupling structure is adopted...
A new linearity improvement technique is proposed to implement a low-distortion Gm-C band-pass filter working in high IF ranges. The purpose of the linearization technique is to eliminate Gm" value of the transconductor by employing a superposition method that combines two opposite non-linear behaviors of the two parallel wings designed inside the transconductor. Instead of conventional biquad...
This paper describes a wide-band sharp-rejection active-RC low pass filter (LPF) for pulse-based UWB IEEE 802.15.4a WPAN applications. Sharp rejection is attributed to the combination of different AC characteristic of three biquads in series. A simple operational amplifier (Op-amp) is adopted to ensure high frequency performance for the designed filter. The LPF is designed in 0.13 mum TSMC CMOS process...
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