A 1V Transformer-Feedback Low-Noise Amplifier for 5-GHz Wireless LAN in 0 . 18-m CMOS

A low-noise amplifier (LNA) uses low-loss monolithic transformer feedback to neutralize the gate–drain overlap capacitance of a field-effect transistor (FET). A differential implementation in 0.18m CMOS technology, designed for 5-GHz wireless local-area networks (LANs), achieves a measured power gain of 14.2 dB, noise figure (NF, 50 ) of 0.9 dB, and third-order input intercept point (IIP3) of +0.9 dBm at 5.75 GHz, while consuming 16 mW from a 1-V supply. The feedback design is benchmarked to a 5.75-GHz cascode LNA fabricated in the same technology that realizes 14.1-dB gain, 1.8-dB NF, and IIP3 of +4.2 dBm, while dissipating 21.6 mW at 1.8 V.

[1]  Robert G. Meyer,et al.  A 1-GHz BiCMOS RF front-end IC , 1994, IEEE J. Solid State Circuits.

[2]  J. R. Long,et al.  A 1.9 GHz low-voltage silicon bipolar receiver front-end for wireless personal communications systems , 1995 .

[3]  J.R. Long,et al.  RF analog and digital circuits in SiGe technology , 1996, 1996 IEEE International Solid-State Circuits Conference. Digest of TEchnical Papers, ISSCC.

[4]  T.H. Lee,et al.  A 12 mW wide dynamic range CMOS front end for a portable GPS receiver , 1997, 1997 IEEE International Solids-State Circuits Conference. Digest of Technical Papers.

[5]  Thomas H. Lee.  The Design of CMOS Radio-Frequency Integrated Circuits , 1998 .

[6]  David J. Allstot,et al.  Monolithic transformers and their application in a differential CMOS RF low-noise amplifier , 1998, IEEE J. Solid State Circuits.

[7]  T. Manku,et al.  Microwave CMOS-device physics and design , 1999, IEEE J. Solid State Circuits.

[8]  Ran-Hong Yan,et al.  5 GHz CMOS radio transceiver front-end chipset , 2000, 2000 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.00CH37056).

[9]  A. Abidi,et al.  A 2 . 4-GHz Low-IF Receiver for Wideband WLAN in 0 . 6-m CMOS — Architecture and Front-End , 2000 .

[10]  J.R. Long,et al.  Monolithic transformers for silicon RF IC design , 2000, IEEE Journal of Solid-State Circuits.

[11]  B. Razavi,et al.  A 5.2-GHz CMOS receiver with 62-dB image rejection , 2000, 2000 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.00CH37103).

[12]  H.R. Rategh,et al.  A 5-GHz CMOS wireless LAN receiver front end , 2000, IEEE Journal of Solid-State Circuits.

[13]  Paul Leroux,et al.  A 0.8 dB NF ESD-protected 9 mW CMOS LNA , 2001 .

[14]  John R. Long,et al.  Differentially driven symmetric microstrip inductors , 2002 .