Title :
Fully integrated 10 GHz CMOS VCO for multi-band WLAN applications
Author :
Perraud, Laurent ; Bonnot, Jean-Louis ; Sornin, Nicolas ; Pinatel, Christophe
Author_Institution :
NewLogic Technol., Sophia Antipolis, France
Abstract :
A 10 GHz VCO, with 26% tuning range and with -96 dBc/Hz phase noise @ 100kHz offset, has been fabricated in a standard low cost 0.18/spl mu/m CMOS technology with a thick metal option. In order to optimize this VCO for integration in a dual-mode 2.4/5 GHz transceiver product, a 6 bits-trimmable LC-tank with Q ranging from 12 to 18 has been first fabricated and characterized. The use of an on-chip transformer allowed measurements of the VCO to be made in different biasing conditions. This VCO can be used adequately to fit frequency synthesizer´s requirements for the 802.11a/b/g standards.
Keywords :
CMOS integrated circuits; Q-factor; circuit optimisation; frequency synthesizers; voltage-controlled oscillators; wireless LAN; 0.18 microns; 10 GHz; 100 kHz; 2.4 GHz; 5 GHz; 6 bits; CMOS VCO; IEEE 802.11 standards; different biasing conditions; dual-mode transceiver; frequency synthesizer requirements; multiband WLAN applications; on-chip transformer; phase noise; standard low cost CMOS technology; trimmable LC-tank; CMOS technology; Fingers; Frequency conversion; Geometry; Inductors; Q factor; Semiconductor device measurement; Varactors; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257145
