1. A Wideband Low Power VCO for IEEE 802.11a
Anchlia, A.; Sharma, D.; Solid-State and Integrated Circuit Technology.
ICSICT '06. 8th Page(s):
積體電路設計研究所
指導教授 : 林志明 教授
學生 : 郭峻瑋

2. Outline Abstract Introduction Circuit Design Simulation Results
Conclusion

3. Abstract the VCO is implemented in 0.25-um technology
a tuning range of 1.35GHz, from 4.93GHz to 6.28GHz
low phase noise of offset from 5.7GHz carrier

4. Introduction complementary cross-coupled structure
wide tuning range without any switching between varactors
802.11a standard has three bands in the frequency range of GHz

5. Circuit Design
Fig. 1 Schematic of the LC VCO Implemented

6. Fig. 2 CV Characteristics of Accumulation Mode Varactor

7. Fig. 3 Details of the Varactor Group Implemented

8. Fig. 4 Shifted CV Curves

9. Simulation Results
Fig. 5 VCO Tuning Curve

10. Fig. 6 Phase Noise for Center Frequency of 5.7GHz

11. Fig. 7 Phase Noise Variation with Carrier @1MHz Offset

12. Conclusion