Title :
A 5GS/s 12.2pJ/conv. analog charge-domain FFT for a software defined radio receiver front-end in 65nm CMOS
Author :
Sadhu, Bodhisatwa ; Sturm, Martin ; Sadler, Brian M. ; Harjani, Ramesh
Author_Institution :
Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
This work describes the design of CRAFT (Charge Re-use Analog Fourier Transform): an RF front-end channelizer for software defined radios (SDR) based on a 16 point analog-domain FFT. The design relies on charge re-use to achieve 47dB average SNDR on a 5GS/s I/Q input, and consumes only 12.2pJ/conv. Due to its wide-band and low power channelization capabilities, it is expected to reduce the sample rate and dynamic range requirements for wide-band digitization in SDRs.
Keywords :
CMOS integrated circuits; fast Fourier transforms; low-power electronics; radio receivers; software radio; 16 point analog- domain FFT; CMOS process; CRAFT; RF front-end channelizer; SDR; analog charge-domain FFT; charge re-use analog Fourier transform; low power channelization capability; noise figure 47 dB; size 65 nm; software defined radio receiver front-end; wide-band channelization capability; wide-band digitization; Capacitors; Clocks; Discrete Fourier transforms; Dynamic range; Latches; Layout; Receivers; CR; FFT; SDR; cognitive radio; filter; software defined radio; switched capacitor;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2012 IEEE
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-0413-9
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2012.6242227
