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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sanduleanu, M.A.T. Stikvoort, E. |
| Copyright Year | 2005 |
| Description | Author affiliation: Philips Res., Eindhoven, Netherlands (Sanduleanu, M.A.T.; Stikvoort, E.) |
| Abstract | This paper presents a varactor-less, quadrature oscillator with high linearity. It is based on two identical sections comprising a differential Colpitts part and a coupling part. Tuning of the common-mode current and/or differentially changing the tail currents of the coupling and Colpitts parts can achieve the variation of the oscillation frequency. The oscillation frequency can be changed from 23 GHz to 24.4 GHz (10%) for a variation in bias current from 1 mA to 2.25 mA. The linearity in the whole tuning range is better than /spl plusmn/1.5%. The measured phase-noise @1 MHz is about -94 dBc/Hz. At a nominal supply voltage of 3.3 V/spl plusmn/10%, the supply pushing is better than 250 MHz/V. The IQ VCO has been realized in a BiCMOS process (QUBIC4) with 38 GHz f/sub T/ and 3 /spl mu/m thick top metal layer for inductors. The occupied area is 0.23 mm/sup 2/ and the power consumption is 22 mW. Possible applications for this oscillator are IQ downconverters, transceivers for mm-wave and FMCW radar sensors where the linearity of the VCO is an important design specification. |
| Sponsorship | IEEE Microwave Theory and Techniques Soc. IEEE Electron Devices Soc. IEEE Solid State Circuits Soc |
| Starting Page | 577 |
| Ending Page | 580 |
| File Size | 633277 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780389832 |
| ISSN | 15292517 |
| DOI | 10.1109/RFIC.2005.1489879 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-06-12 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Linearity Tuning Frequency Voltage-controlled oscillators Tail Thickness measurement Phase measurement Voltage BiCMOS integrated circuits Inductors |
| Content Type | Text |
| Resource Type | Article |
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