volume | PIER Journals

Abstract

A novel 12 GHz VCO designed and fabricated in a 0.18 μm SiGe BiCMOS technology is presented. Strongly magnetic coupled dual LC tanks with fixed and tunable capacitive elements are introduced to extend tuning range and improve phase noise. By hybrid using of varactor tuning, loaded transformer tuning and switched capacitor tuning, the proposed VCO achieves a wide tuning range of 4.3 GHz (36%) and output power of -9 dBm with only 4.5 mW power consumption and only 0.17 mm² chip area.

1. Xia, , Q., Z.-X. Tang, and B. Zhang, , "A Ku-band push-push dielectric resonator oscillator," Journal of Electromagnetic Waves and Applications, Vol. 24, , No. 14--15, , 1859{-1866, , 2010.

2. Li, , J.-Y., W.-J. Lin, M.-P. Houng, and L.-S. Chen, "A second harmonic suppression CMOS cross-coupled VCO using active inductor technique for WLAN system applications," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 14--15, 2077-2086, , 2010..

3. Ibrahim, , S. H., "Design and analysis considerations of 4-GHz integrated antenna with negative resistance oscillator," Progress In Electromagnetics Research B, Vol. 13, , 111-131, , 2009.
doi:10.2528/PIERB08122901

4. Shie, , C.-I., J.-C. Cheng, S.-C. Chou, and Y.-C. Chiang, "Design of CMOS quadrature VCO using on-chip trans-directional couplers," Progress In Electromagnetics Research,, Vol. 106, , 91-106, , 2010.
doi:10.2528/PIER10053002

5. Fahs, , B., W. Y. Ali-Ahmad, and P. Gamand, , "A two-stage ring oscillator in 0.13-¹m CMOS for UWB impulse radio," IEEE Trans. Micro. Theory Tech.,, Vol. 57, , 1074-1082, May 2009.
doi:10.1109/TMTT.2009.2017246

6. Li, , C., J. Lin, and , "A 1--9 GHz linear-wide-tuning-range quadrature ring oscillator in 130nm CMOS for non-contact vital sign radar application ," IEEE Microwave Wireless Compon. Lett.,, Vol. 20, No. 32--34, Jan. 2010. .

7. Osmany, , S. A., F. Herzel, J. C. Scheytt, K. Schmalz, and W. Winkler, "Integrated 22 GHz low-phase-noise VCO with digital tuning in SiGe BiCMOS technology," Electronic Lett.,, Vol. 45, , Jan. 2009.

8. Chiong, , C., H. Chang, and M. Chen, , "Wide bandwidth InGaPGaAs HBT voltage-controlled oscillators in K- and Ku-band," Proc. Global Symp. Millim. Waves, , 185-188, , Apr. 2008.
doi:10.1109/GSMM.2008.4534594

9. Pohl, , N., H. M. Eein, T. Musch, K. Aufinger, and J. Hausner, "SiGe Bipolar VCO with ultra-wide tuning range at 80 GHz centre frequency," IEEE J. Solid-state Circuits,, Vol. 44, No. 10, 2655-2662, Oct. 2009.
doi:10.1109/JSSC.2009.2026822

10. Safarian, , Z., H. Hashemi, and , "A 1.3{6 GHz triple-mode CMOS VCO using coupled inductors," Proceedings of the IEEE Custom Integrated Circuit Conference, , 69-72, Sep. 2008..

11. Stmayer, , M., J. Cabanillas, and G. M. Rebeiz, , "A low-noise transformer-based 1.7 GHz CMOS VCO," IEEE ISSCC Digest of Technical Papers, , 224-484, 2002.

12. Hajimiri, , A., T. H. Lee, and , "A general theory of phase noise in electrical oscillators," IEEE J. Solid-state Circuits, , Vol. 33, No. 2, 179-194, , Feb. 1998..
doi:10.1109/4.658619

13. Oh, , N., S. Lee, and , "11-GHz CMOS differential VCO with back-gate transformer feedback," IEEE Microwave Wireless Compon. Lett., , Vol. 15, 733-735, , Nov. 2005..

14. Park, B., S. Lee, S. Choi, and S. Hong, , "A 12-GHz fully integrated cascode CMOS LC VCO with Q-enhancement circuit," IEEE Microwave Wireless Compon. Lett.,, Vol. 18, , 133-135, , Feb. 2008.
doi:10.1109/LMWC.2007.915136

15. Kim, J., S. Jeon, S. Moon, N. Kim, and H. Shin, , "A 12-GHz GaInP/GaAs HBT VCO based on push-push output extraction from capacitive common-node," IEEE MTT-S Int. Dig., , 1705-1708, Jun. 2005..

16. Baek, , D., S. Ko, J. Kim, D. Kim, and S. Hong, "Ku-band InGaPGaAs HBT MMIC VCOs with balanced and differential topologies," IEEE Trans. Micro. Theory Tech., Vol. 52, No. 4, 1353-1359, , Apr. 2004..
doi:10.1109/TMTT.2004.825726

Dr. Shouxian Mou

Dr. Kaixue Ma

Dr. Kiat Seng Yeo

Dr. Nagarajan Mahalingam

Dr. Bharatha Kumar Thangarasu