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This paper presents the design and implementation of a low power wide tuning range baseband filter with an accurate on-chip tuning circuit for reconfigurable multistandard wireless transceivers.The realized low pass filter(LPF) is a six-order Butterworth type by cascading three stage active-G_m-RC biquadratic cells.A modified linearization technique is used to improve the filter linearity performance at low power consumption.A new process-independent transconductor matching circuit and a new frequency tuning circuit with frequency compensation are proposed to achieve a high precision filter frequency response.The proposed LPF is realized in a 130 nm standard CMOS technology.The measured results show that the LPF exhibits a high bandwidth programmability from 0.1 to 25 MHz with a tuning frequency error less than 2.68%over the wide tuning range.The power consumption is scalable,ranging from 0.52 to 5.25 mA,from a 1.2 V power supply while achieving a 26.3 dBm in-band IIP3.
This paper presents the design and implementation of a low power wide tuning range baseband filter with an accurate on-chip tuning circuit for reconfigurable multistandard wireless transceivers. The realized low pass filter (LPF) is a six-order Butterworth type by cascading three stage active -G_m-RC biquadratic cells. A modified linearization technique is used to improve the filter linearity performance at low power consumption. A new process-independent transconductor matching circuit and a new frequency tuning circuit with frequency compensation are to achieve a high precision filter frequency the proposed LPF is realized in a 130 nm standard CMOS technology. The measured results show that the LPF exhibits a high bandwidth programmability from 0.1 to 25 MHz with a tuning frequency error less than 2.68% over the wide tuning range. The power consumption is scalable, ranging from 0.52 to 5.25 mA, from a 1.2 V power supply while achieving a 26.3 dBm in-band IIP3.