Title :
A balanced 1.5 GHz voltage controlled oscillator with an integrated LC resonator
Author :
Dauphinee, L. ; Copeland, M. ; Schvan, P.
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Abstract :
A monolithic voltage-controlled oscillator (VCO) is presented for low-power digital radio handsets. This circuit is fabricated in a production 0.8/spl mu/m 11GHz f/sub T/ BiCMOS process. The VCO is based on the common-collector Colpitts circuit in a balanced configuration to provide differential output for direct compatibility with prescaler and double-balanced mixer inputs. The circuit utilizes an integrated LC resonator comprised of coplanar inductors, polysilicon capacitors, and on-chip varactors. The fully-integrated inductors have an unloaded Q of approximately 5 at 2GHz.
Keywords :
BiCMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; digital radio; mobile radio; resonators; voltage-controlled oscillators; 0.8 micron; 1.5 GHz; 11 GHz; BiCMOS process; balanced configuration; common-collector Colpitts circuit; coplanar inductors; differential output; digital radio handsets; direct compatibility; double-balanced mixer inputs; integrated LC resonator; on-chip varactors; polysilicon capacitors; unloaded Q; voltage controlled oscillator; BiCMOS integrated circuits; Capacitance; Digital communication; Energy consumption; Fabrication; Inductors; Phase noise; Power generation; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 1997. Digest of Technical Papers. 43rd ISSCC., 1997 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3721-2
DOI :
10.1109/ISSCC.1997.585454
