A Highly Linear Wideband CMOS Low-Noise Amplifier Based on Current Amplification for Digital TV Tuner Applications

A differential wideband low-noise amplifier (LNA) based on the current amplification scheme is presented for digital TV tuners. In order to highly improve the linearity and exploit the noise cancellation, a common-gate stage with positive current feedback is integrated in parallel with a common-source stage using the current mirror amplifier. The proposed 0.18-mum CMOS LNA exhibits a power gain of 20.5 dB, an IIP3 of 2.7 dBm, an IIP2 of 43 dBm, and an average noise figure of 3.3 dB with 32.4 mW power consumption at a 1.8-V power supply and 0.12 mm2 area.

[1]  B. Nauta,et al.  Wide-band CMOS low-noise amplifier exploiting thermal noise canceling , 2004, IEEE Journal of Solid-State Circuits.

[2]  I. Mehr.  Integrated TV tuner design for multi-standard terrestrial reception , 2005, 2005 IEEE Radio Frequency integrated Circuits (RFIC) Symposium - Digest of Papers.

[3]  Ahmad Mirzaei,et al.  A 6.5 GHz wideband CMOS low noise amplifier for multi-band use , 2005, Proceedings of the IEEE 2005 Custom Integrated Circuits Conference, 2005..

[4]  Antonio Liscidini,et al.  A 0.13 /spl mu/m CMOS front-end, for DCS1800/UMTS/802.11b-g with multiband positive feedback low-noise amplifier , 2006, IEEE Journal of Solid-State Circuits.

[5]  R.W. Brodersen,et al.  Design of a Sub-mW 960-MHz UWB CMOS LNA , 2006, IEEE Journal of Solid-State Circuits.

[6]  H.C. Luong,et al.  A Wideband CMOS Variable-Gain Low-Noise Amplifier for Cable TV Tuners , 2005, 2005 IEEE Asian Solid-State Circuits Conference.

[7]  Kwyro Lee,et al.  An integrated low power highly linear 2.4-GHz CMOS receiver front-end based on current amplification and mixing , 2005, IEEE Microwave and Wireless Components Letters.

[8]  H.-R. Chuang,et al.  A 40~900MHz Broadband CMOS Differential LNA with Gain-Control for DTV RF Tuner , 2005, 2005 IEEE Asian Solid-State Circuits Conference.