1. Design of a 3.1-10.6GHz Low-Voltage, Low-Power CMOS Low-Noise Amplifier for Ultra-wideband Receivers Microwave Conference Proceedings, 2005. APMC 2005. IEEE International 4-7 Dec. 2005 Page 所別 : 積體電路設計研究所 學號 : 95662004 學生：賴秀全

2. Outline  Abstract  Introduction  Circuit design  Simulation results and layout considerations  Conclusion  References

3. Abstract  A low-voltage, low-power ultra-wideband (UWB) low- noise amplifier (LNA) for IEEE 802.15.3a is presented. A simplified Chebyshev filter is used to achieve the input broadband matching.  The LNA is simulated based on TSMC 0.18μm mixed signal/RF process. With only 1V bias voltage, the LNA can achieve power flat gain of 10dB with input matching of -9.76dB; the minimum noise figure 3.7dB; and input third-order-intercept point (IIP3) of -1dB. The power dissipation is only 7.2mW

4. Introduction  Ultra-wideband (UWB) communication techniques have attracted great interests in both academia and industry in the past few years for applications in short- range and high-speed wireless mobile systems. UWB systems operate across a wide range of frequency between 3.1-10.6 GHz.

5. Figure 1. Schematic of the UWB LNA

6. Figure 2. doubly band-pass filter

7. Figure 3. Schematic of the LNA input network

8. Figure 4. Simulated power gain (S21)

9. Figure 5. Simulated input reflection coefficient (S11) -9.76db

10. Figure 6. Simulated output reflection coefficient (S22) -9.64db

11. Figure 7. Simulated noise figure 3.68dB

12. Figure 8. Layout view

13. Figure 9. SUMMARY OF UWB LNA PERFORMANCE AND COMPARISO WITH PREVIOUSLY PUBLISHED DESIGNS

14. Conclusion  UWB LNA has been designed in a standard TSMC 0.18- μm CMOS 1P6M technology. The design uses a three- section simplified Chebyshev filter for the input network, which can greatly reduce the circuit complexity and achieve the input.  The cascode architecture and the output-matching buffer allow us to achieve simultaneously high gain, low noise, and high linearity.

15. References  IEEE 802.15 WPAN High Rate Alternative PHY Task Group3a(TG3a).Available:http://www.ieee802.org/15/pub/TG3a.html  A. Tanaka, H. Kodama, A. Kasamatsu, "Low-noise Amplifier with Center Frequency Hoping for an MB-OFDM UWB Receiver", Joint UWBST&IWUWBS2004, No.FA-4-4, May.20,2004.  A.Bevilacqua and A. Niknejad, “An ultra-wideband CMOS LNA for 3.1 to 10.6 GHz wireless receivers,” in Int. Solid-State Circuits Conf. Tech. Dig., Feb. 2004, pp. 382-383.  A.Bevilacqua and A. Niknejad, “An ultra-wideband CMOS LNA for 3.1 to 10.6 GHz wireless receivers,” in Int. Solid-State Circuits Conf.Tech. Dig., Feb. 2004, pp. 382-383.

16. Q&A Thank you