Title :
A charge sampling baseband filter using a new high linearity Gm for multimode receiver
Author :
Shah, Utkarsh ; El-Sankary, Kamal ; El-Masry, Ezz
Author_Institution :
Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada
Abstract :
This paper presents charge sampling circuit using new high linearity transconductor (Gm) cell that has third order distortion cancellation. The proposed Gm-cell has almost constant transconductance value over ±200 mV input voltage range. The charge sampling circuit has SNDR around 73 dB with ENOB of 11 bits and it consumes 4.38 mW power. Its input referred noise is 15.29 nV/¿Hz and noise figure is 24.67 dB at 81 MHz. This architecture is used to implement a programmable analog baseband filter for Bluetooth and UMTS. Simulations were carried out using the TSMC 0.18 ¿m CMOS technology with supply voltage of 1.6 V.
Keywords :
Bluetooth; CMOS integrated circuits; analogue-digital conversion; programmable filters; radio receivers; signal processing equipment; Bluetooth; CMOS technology; ENOB; SNDR; TSMC; UMTS; charge sampling baseband filter; charge sampling circuit; frequency 81 MHz; high linearity transconductor cell; input referred noise; multimode receiver; noise figure; noise figure 24.67 dB; power 4.38 mW; programmable analog baseband filter; size 0.18 mum; supply voltage; third order distortion cancellation; transconductance value; voltage 1.6 V; word length 11 bit; Baseband; CMOS technology; Circuits; Filters; Linearity; Noise figure; Sampling methods; Transconductance; Transconductors; Voltage;
Conference_Titel :
Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on
Conference_Location :
Yasmine Hammamet
Print_ISBN :
978-1-4244-5090-9
Electronic_ISBN :
978-1-4244-5091-6
DOI :
10.1109/ICECS.2009.5410967
