Designs of CMOS Multi-Band Voltage Controlled Oscillator Using Active Inductors

Provided by: NORTH ATLANTIC UNIVERSITY UNION Topic: Hardware Date Added: Mar 2008 Format: PDF
In this paper, the authors propose a Radio Frequency (RF) CMOS multiple bands Voltage-Controlled Oscillator (VCO) using an active inductor load with a binary code band selector suitable for multi-standards wireless applications.. By employing an improved high-Q active inductor including two bits binary controlled code, the multi-band VCO operating at four different frequency bands is realized. The proposed oscillator circuit is designed in TSMC 0.18um CMOS technology. Based on the simulation results, the VCO can operate at 900MHz, 1.8GHz, 1.9GHz and 2.4GHz with phase noise of -86.92dBc/Hz, -84.49dBc/Hz, -83.77dBc/Hz and -81.17dBc/Hz respectively.

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