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

Outline

Abstract Introduction Circuit design Simulation results and layout

considerations Conclusion References

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

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.

Figure 1. Schematic of the UWB LNA

Figure 2 . doubly band-pass filter

Figure 3. Schematic of the LNA input network

Figure 4. Simulated power gain (S21)

Figure 5. Simulated input reflection coefficient (S11)

-9.76db

Figure 6. Simulated output reflection coefficient (S22)

-9.64db

Figure 7. Simulated noise figure

3.68dB

Figure 8. Layout view

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

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.

References IEEE 802.15 WPAN High Rate Alternative PHY Task Group3a(TG3a).A

vailable: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.

Q&A

Thank you