A Wideband CMOS RF Front-End Using AC-Coupled Current Mirrored Technique for Multiband Multistandard Mobile TV Tuners

In this paper, a wideband CMOS radio frequency (RF) front-end for various terrestrial mobile digital TV applications such as digital video broadcasting-handheld, terrestrial digital multimedia broadcasting, and integrated services digital broadcasting-terrestrial is proposed. To cover VHF III, UHF, and L bands and reduce the silicon area simultaneously, it employs three low-noise amplifiers and single-to-differential transconductors and shares the rest of the RF front-end. By applying ac-coupled current mirrored technique, the proposed RF front-end has good wideband performance, high linearity, and precise gain control. It is fabricated in 0.18 mum CMOS process and draws 15 mA~20 mA from a 1.8 V supply voltage for each band. It shows a gain of more than 29 dB, noise figure of lower than 2.5 dB, IIP2 of more than 30 dBm, IIP3 of more than -10 dBm for entire bands.

[1]  Mohamed A. Y. Abdulla,et al.  Distortion Analysis in Analog Integrated Circuits , 2002 .

[2]  Christofer Toumazou,et al.  Analogue IC design : the current-mode approach , 1993 .

[3]  Chulho Chung,et al.  High performance NPN BJTs in standard CMOS process for GSM transceiver and DVB-H tuner , 2006, IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006.

[4]  I. Nam,et al.  High-performance RF mixer and operational amplifier BiCMOS circuits using parasitic vertical bipolar transistor in CMOS technology , 2005, IEEE Journal of Solid-State Circuits.

[5]  M. Koutani,et al.  A digital terrestrial television (ISDB-T) tuner for mobile applications , 2004, 2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519).

[6]  D. Salle,et al.  A direct-conversion receiver for DVB-H , 2005, ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005..