Title :
New 900 MHz CMOS voltage-controlled oscillator for wireless communications
Author :
Tchamov, Nikolay ; Zohios, Jerasimos ; Ismail, Mohammed
Author_Institution :
Telecommun. Lab., Tampere Univ. of Technol., Finland
Abstract :
The design of a 900 MHz VCO with a series LC resonance contour implemented in a 0.5 μm CMOS technology is presented. From a 3 V supply and with tuning voltage 1.5 V, the amplitude of the output is 1.51 V and a tuning range of approximately 110 MHz is achieved. Proper operation was verified for a supply voltage above 1.2 V. The circuit can be used in various portable communication systems. The results are based on simulations with real technology parameters.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; mobile radio; voltage-controlled oscillators; 0.5 micron; 1.2 to 3 V; 900 MHz; CMOS VCO; portable communications systems; series LC resonance contour; tuning range; voltage-controlled oscillator; wireless communications; CMOS technology; Capacitance; Circuit optimization; Inductors; Radio frequency; Ring oscillators; Tuning; Voltage; Voltage-controlled oscillators; Wireless communication;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.662286
