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New 900 MHz CMOS voltage-controlled oscillator for wireless communications

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3 Author(s)
Tchamov, N. ; Telecommun. Lab., Tampere Univ. of Technol., Finland ; Zohios, J. ; Ismail, M.

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.

Published in:

Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on  (Volume:2 )

Date of Conference:

3-6 Aug. 1997