Two I/Q oscillators have been realized that cover a one octave tuning range, and, when combined with a divider and a multiplexer, cover the complete TV band. The realized oscillators embody highly cost-effective key building blocks for tuning systems in consumer ICs for TV on portable platforms. The resonators consist of bond-wires, 8 bit capacitor banks and varactors. One I/Q LC oscillator is realized with integrators, and achieves a tuning range of 412-880 MHz (107% of an octave), and its phase-noise-to-carrier ratio, L(f/sub m/), varies from -101 dBc/Hz to -110 dBc/Hz at 500 kHz offset. Its power dissipation is 35 mW (at 3 V). A second I/Q oscillator is coupled with V/I converters that implement a high-pass function. Its tuning range is 417-836 MHz (102%), L(500 kHz) varies between -111 dBc/Hz and -115 dBc/Hz, with a power dissipation of 23 mW. Both oscillators are realized in an 8 GHz f/sub T//0.6 /spl mu/m BiCMOS process.
|Title of host publication||IEEE Radio Frequency Integrated Circuits Symposium 2005|
|Place of Publication||Piscataway|
|Publisher||Institute of Electrical and Electronics Engineers|
|Publication status||Published - 2005|
Tang, van der, J. D., Amiot, R., van Rumpt, H., Kasperkovitz, D., & Roermund, van, A. H. M. (2005). I/Q LC oscillators with an octave tuning range for TV on mobile platforms. In IEEE Radio Frequency Integrated Circuits Symposium 2005 (pp. 531-534). [RTU4A-3] Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/RFIC.2005.1489866