Title :
A quadrature charge-domain filter with frequency down-conversion and filtering for RF receivers
Author :
Huang, Ming-Feng ; Chen, Lai-Fu ; Chiu, Tzu-Lun
Author_Institution :
SoC Technol. Center, Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
A quadrature charge-domain filter (QCDF) for frequency down-conversion and filtering is proposed. After measurement of QCDF by a 1072-MS/s sampling rate, a stop-band attenuation and bandwidth were 53-dB and 44-MHz, respectively. For quadrature performance after down-conversion, this QCDF provided -27.67-dB EVM upon a 64-QAM signal with 54-Mb/s. This chip consumed 7.7-mA power current upon a 1.2-V supply and occupied 0.08-mm2 in 90-nm CMOS process.
Keywords :
CMOS integrated circuits; active filters; mixed analogue-digital integrated circuits; quadrature amplitude modulation; radio receivers; 64 QAM signal; CMOS process; QCDF; RF receivers; anti alias filter; bandwidth 44 MHz; bit rate 54 Mbit/s; current 7.7 mA; frequency down conversion; frequency filtering; quadrature charge domain filter; size 90 nm; voltage 1.2 V; Attenuation; Bandwidth; Capacitors; Clocks; Filtering; Finite impulse response filter; IIR filters; Radio frequency; Signal sampling; Tunable circuits and devices; Anti-alias filer (AAF); Charge-domain filter (CDF); Mixer; Quadrature CDF (QCDF); Receiver; Time-interleaving CDF (TICDF);
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135600
