A 32-GHz non-uniform distributed amplifier in 0.18-/spl mu/m CMOS

This letter presents a fully integrated distributed amplifier in a standard 0.18-/spl mu/m CMOS technology. By employing a nonuniform architecture for the synthetic transmission lines, the proposed distributed amplifier exhibits enhanced performance in terms of gain and bandwidth. Drawing a dc current of 45mA from a 2.2-V supply voltage, the fabricated circuit exhibits 9.5-dB pass-band gain with a bandwidth of 32GHz while maintaining good input and output return losses over the entire frequency band. With a compact layout technique, the chip size of the distributed amplifier including the testing pads is 940/spl times/860/spl mu/m/sup 2/.

[1]  Jean-Olivier Plouchart,et al.  A 4-91-GHz Traveling-Wave Amplifier in a Standard 0.12- m SOI CMOS Microprocessor Technology , 2004 .

[2]  Thomas Wong,et al.  Fundamentals of distributed amplification , 1993 .

[3]  R. Lefevre,et al.  DC-92 GHz ultra-broadband high gain InP HEMT amplifier with 410 GHz gain-bandwidth product , 2002 .

[4]  Kuo-Liang Deng,et al.  A 0.6-22-GHz broadband CMOS distributed amplifier , 2003, IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2003.

[5]  Huei Wang,et al.  A miniature 25-GHz 9-dB CMOS cascaded single-stage distributed amplifier , 2004, IEEE Microwave and Wireless Components Letters.

[6]  S. Yokokawa,et al.  An over 110-GHz InP HEMT flip-chip distributed baseband amplifier with inverted microstrip line structure for optical transmission systems , 2002 .

[7]  M. Rodwell,et al.  40Gb/s CMOS distributed amplifier for fiber-optic communication systems , 2004, 2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519).

[8]  Kuo-Liang Deng,et al.  A 0.5-14-GHz 10.6-dB CMOS cascode distributed amplifier , 2003, 2003 Symposium on VLSI Circuits. Digest of Technical Papers (IEEE Cat. No.03CH37408).

[9]  To-Po Wang,et al.  An 80GHz travelling-wave amplifier in a 90nm CMOS technology , 2005, ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005..

[10]  J.-O. Plouchart,et al.  A 4-91-GHz traveling-wave amplifier in a standard 0.12-/spl mu/m SOI CMOS microprocessor technology , 2004, IEEE Journal of Solid-State Circuits.

[11]  N.G. Tarr,et al.  A 27 GHz fully integrated CMOS distributed amplifier using coplanar waveguides , 2004, 2004 IEE Radio Frequency Integrated Circuits (RFIC) Systems. Digest of Papers.

[12]  F. Ellinger.  60-GHz SOI CMOS traveling-wave amplifier with NF below 3.8 dB from 0.1 to 40 GHz , 2005, IEEE Journal of Solid-State Circuits.