Monolithic supply modulated RF power amplifier and DC-DC power converter IC

Mobile communication systems require highly efficient, linear, and integrated power amplifiers. This paper reports the results of a monolithic envelope following system implemented in a 0.18 /spl mu/m SiGe BiCMOS process technology. The monolithic envelope following system consists of a synchronous buck DC-DC converter, which is integrated with and provides the power supply for a 900 MHz power amplifier while tracking the envelope of the RF input signal.

[1]  George B. Norris,et al.  800 MHz power amplifier using envelope following technique , 1999, RAWCON 99. 1999 IEEE Radio and Wireless Conference (Cat. No.99EX292).

[2]  W. McFarland,et al.  An IC for linearizing RF power amplifiers using envelope elimination and restoration , 1998, 1998 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, ISSCC. First Edition (Cat. No.98CH36156).

[3]  Robert W. Brodersen,et al.  A low-voltage CMOS DC-DC converter for a portable battery-operated system , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[4]  P. Allen,et al.  Optimized frequency-shaping circuit topologies for LDOs , 1998 .

[5]  Seth R. Sanders,et al.  An integrated controller for a high frequency buck converter , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[6]  Krishna Shenai,et al.  DC-DC power converter for monolithic implementation , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[7]  Charles R. Sullivan,et al.  Synchronous rectification with adaptive timing control , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[8]  Dragan Maksimovic,et al.  Switched-capacitor DC-DC converters for low-power on-chip applications , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).