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A Low-Power Highly Reconfigurable Analog FIR Filter With 11-Bit Charge-Domain DAC for Narrowband Receivers | IEEE Journals & Magazine | IEEE Xplore

A Low-Power Highly Reconfigurable Analog FIR Filter With 11-Bit Charge-Domain DAC for Narrowband Receivers


Abstract:

An innovative, highly reconfigurable charge-domain analog finite-impulse-response (AFIR) filter for high-channel selectivity receivers is presented. This filter demonstra...Show More

Abstract:

An innovative, highly reconfigurable charge-domain analog finite-impulse-response (AFIR) filter for high-channel selectivity receivers is presented. This filter demonstrates excellent reconfigurability to different bandwidths and desired stopband rejection and realizes the coefficients in the charge-domain with time-varying pulse widths controlling the on-time of the transconductor. The charge-domain finite impulse response (FIR) principle is derived step by step in this letter. The proposed filter, manufactured in 28-nm CMOS process, occupies a compact area of 0.05 mm 2, and its bandwidth can be reconfigured from 0.37 to 4.6 MHz. The filter can achieve −70-dB stopband rejection with a sharp transition ( -f_{-60 {\mathrm {dB}}}^{/f}-3~ {\mathrm {dB}}\,\,= 4.5) and low-power consumption of 0.356 mW.
Published in: IEEE Solid-State Circuits Letters ( Volume: 7)
Page(s): 74 - 77
Date of Publication: 01 February 2024
Electronic ISSN: 2573-9603

References

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