Title :
A 0.13μm CMOS Gm-C LPF for UWB receiver
Author :
Shen, Hua ; Wu, Guang Ming ; Yang, Li-wu ; Lv, Xin
Author_Institution :
Beijing Inst. of Technol., Beijing
Abstract :
A 264 MHz 6th order Gm-C Chebyshev low-pass filter based on the leapfrog structure for direct conversion UWB receiver is presented. The universal design flow and the topology of this filter are also analyzed. Tuning capacitors digitally and tuning the common-mode reference voltage continuously can calibrate the cutoff frequency to overcome the process variation and temperature dependencies. Simulated results show that the cutoff frequency can adjust from 200 MHz to 320 MHz. The attenuation at 660 MHz and 1.3 GHz are 46 dB and 75 dB respectively, and the total harmonic distortion (THD) of the filter is -39.7 dBc for 200 mVpp differential input signal at 200 MHz. The power dissipation is 11.8 mW under 1.5 V power supply.
Keywords :
CMOS integrated circuits; Chebyshev filters; UHF filters; UHF integrated circuits; harmonic distortion; low-pass filters; radio receivers; ultra wideband communication; 6th order Gm-C low-pass filter; CMOS; Chebyshev low-pass filter; UWB receiver; common-mode reference voltage; frequency 1.3 GHz; frequency 264 MHz; frequency 660 MHz; leapfrog structure; power 11.8 mW; size 0.13 micron; total harmonic distortion; tuning capacitors; voltage 1.5 V; Attenuation; Capacitors; Chebyshev approximation; Cutoff frequency; Low pass filters; Temperature dependence; Topology; Total harmonic distortion; Tuning; Voltage;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415651
