Title :
A quadrature charge-domain filter with an extra in-band filtering for RF receivers
Author :
Huang, Ming-Feng
Author_Institution :
Inf. & Commun. Res. Labs., Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
A quadrature charge-domain filter (QCDF) is proposed. This QCDF, based on the input phases, could provide a stop-band filtering and support an in-band filtering of noise. Through the use of FIR coefficient, the alias-band rejection (ABR) and in-band suppression (IBS) could be well controlled. Measurement shows the 27.1dB ABR and 31.3dB IBS from out-of-phase signals and in-phase signals, respectively. This QCDF with 36MHz bandwidth and 7.5dBm IIP3 is fabricated on the 90nm CMOS process.
Keywords :
FIR filters; radio receivers; CMOS process; FIR coefficient; QCDF; RF receivers; alias-band rejection; frequency 36 MHz; in-band filtering; in-band suppression; quadrature charge-domain filter; size 90 nm; stop band filtering; Band pass filters; Circuit noise; Clocks; Finite impulse response filter; IIR filters; Information filtering; Information filters; Low pass filters; Radio frequency; Signal sampling; Anti-alias filer (AAF); Charge-domain filter (CDF); Quadrature Charge-domain filter (QCDF); Time-interleaving CDF (TICDF);
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6240-7
DOI :
10.1109/RFIC.2010.5477350
