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An Ultra-Wide-Band 0.4 – 10-GHz LNA in 0.18-μm CMOS

An Ultra-Wide-Band 0.4 – 10-GHz LNA in 0.18-μm CMOS. Ke-Hou Chen; Jian-Hao Lu; Bo-Jiun Chen; Shen-Iuan Liu; Circuits and Systems II: Express Briefs, IEEE Transactions on Volume 54, Issue 3, March 2007. Adviser : Zhi-Ming Lin Postgraduate : Chia-Wei Chang. Outline. Introduction

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An Ultra-Wide-Band 0.4 – 10-GHz LNA in 0.18-μm CMOS

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  1. An Ultra-Wide-Band 0.4–10-GHz LNA in 0.18-μm CMOS Ke-Hou Chen; Jian-Hao Lu; Bo-Jiun Chen; Shen-Iuan Liu; Circuits and Systems II: Express Briefs, IEEE Transactions on Volume 54, Issue 3, March 2007 Adviser : Zhi-Ming Lin Postgraduate : Chia-Wei Chang

  2. Outline • Introduction • Circuit Description • Experimental Results • Conclusion • Reference

  3. Introduction • Unlike narrow-band systems mentioned above, ultra-wide-band (UWB) systems are an emerging wireless technology capable of transmitting data over a wide frequency band for short ranges with low power and even higher data rate. • The amplifier must meet several stringent requirements, such as broad-band input matching to minimize the return loss, sufficient gain to suppress the noise of a mixer, low noise figure (NF) to enhance receiver sensitivity, low power consumption to increase battery life, and small die area to reduce the cost.

  4. Circuit Description

  5. Experimental Results Measured S-parameters.

  6. Measured NF.

  7. Microphotograph of the LNA.

  8. Conclusion • A UWB CMOS LNA has been implemented in a 0.18- μm CMOS process. • Compared with other broad-band techniques, the presented LNA takes the advantages: less design complexity, low high-frequency noise, low power dissipation, and small size.

  9. References • [1] A. Bevilacqua and A. M. Niknejad, “An ultra-wide-band CMOS lownoise amplifier for 3.1 to 10.6-GHz wireless receiver,”IEEE J. Solid-State Circuits, vol. 39, no. 12, pp. 2259–2268, Dec. 2004. • [2] R. Liu, C. Lin, K. Deng, and H.Wang, “A 0.5–14-GHz 10.6-dB CMOScascode distributed amplifier,” in Dig. Symp. VLSI Circuits, Jun. 2003,vol. 17, pp. 139–140. • [3] C. F. Liao and S. I. Liu, “A broadband noise-canceling CMOS LNA for 3.1–10.6-GHz UWB receiver,” in Proc. IEEE 2005 Custom Integr.Circuits Conf., Sep. 2005, pp. 161–164.

  10. Thank You For Your Attention

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