Title :
A 0.35-μm CMOS Mixer for 3.1-4.8 GHz UWB MB-OFDM Receivers
Author :
Touati, Farid ; Douss, Skandar ; Loulou, Mourad
Author_Institution :
Department of Electrical and Computer Engineering, Sultan Qaboos Univ., Muscat
Abstract :
A design of active mixer intended for the "mode 1" of ultra wideband multi-band OFDM receivers is presented. It is based on a doubly-balanced Gilbert cell type in which bleeding current sources are added in order to improve linearity and gain. Using an adequate input matching network and optimized device size, it was possible to obtain a good operation of the proposed mixer all over the 3.1-4.8 GHz band with AMS 0.35 μm CMOS process parameters. The simulated results show a conversion gain of 14.0 dBm. a noise figure of 7.7 dB and an input IP3 above 0 dBm. when the power consumption is 18 mW under 3 V supply voltage.
Keywords :
CMOS integrated circuits; OFDM modulation; microwave mixers; microwave receivers; ultra wideband technology; CMOS mixer; UWB MB-OFDM receivers; bleeding current sources; doubly-balanced Gilbert cell; frequency 3.1 GHz to 4.8 GHz; gain 14.0 dB; power 18 mW; size 0.35 μm; ultra wideband multi-band OFDM receivers; voltage 3 V; CMOS process; Circuits; Energy consumption; Hemorrhaging; Impedance matching; Linearity; Noise figure; OFDM; Transceivers; Ultra wideband technology;
Conference_Titel :
Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-1377-5
Electronic_ISBN :
978-1-4244-1378-2
DOI :
10.1109/ICECS.2007.4511216
