A High Dynamic Range Programmable CMOS Front-End Filter with a Tuning Range from 1850 to 2400 MHz

This paper presents a highly programmable front-end filter and amplifier intended to replace SAW filters and low noise amplifiers (LNA) in multi-mode direct conversion radio receivers. The filter has a 42 MHz bandwidth, is tunable from 1850 to 2400 MHz, achieves a 5.8 dB NF, –25 dBm in-band 1-dB input compression point (ICP) and 0 dBm out-of-band ICP while drawing 26 mA from a 2.5 V supply.Kâre T. Christensen received the M.Sc. and Ph.D. degrees in electrical engineering from the Technical University of Denmark in 1997 and 2002, respectively.In 1995-96 he was a visiting scholar working on switched current memory cells at the Spanish National Microelectronics Centre in Seville. In 1997 he worked on an asynchronous embedded MIPS16/MIPS32 microprocessor core for LSI Logic. In 1999-2000 he was a visiting researcher at Stanford University. During his stay he worked on fully integrated RF front-end filters in CMOS.From 1998 to 2002 he worked for Nokia Mobile Phones conducting research in the design of RF ICs for multi-band GSM terminals. He currently works for the Danish hearing aid manufacturer Oticon A/S designing micro-power RF circuits and systems in CMOS.He has lectured on several occasions at the Technical University of Denmark and other universities. He has authored or co-authored nine papers and holds three U.S. patents.Thomas H. Lee received the S.B., S.M. and Sc.D. degrees in electrical engineering, all from the Massachusetts Institute of Technology in 1983, 1985, and 1990, respectively.He joined Analog Devices in 1990 where he was primarily engaged in the design of high-speed clock recovery devices. In 1992, he joined Rambus Inc. in Mountain View, CA where he developed high-speed analog circuitry for 500 megabyte/s CMOS DRAMs.He has also contributed to the development of PLLs in the StrongARM, Alpha and AMD K6/K7/K8 microprocessors. Since 1994, he has been a Professor of Electrical Engineering at Stanford University where his research focus has been on gigahertz-speed wireline and wireless integrated circuits built in conventional silicon technologies, particularly CMOS.He has twice received the Best Paper award at the International Solid-State Circuits Conference, co-authored a Best Student Paper at ISSCC, was awarded the Best Paper prize at CICC, and is a Packard Foundation Fellowship recipient.He is an IEEE Distinguished Lecturer of both the Solid-State Circuits and Microwave Societies. He holds 35 U.S. patents and authored The Design of CMOS Radio-Frequency Integrated Circuits (now in its second edition), and Planar Microwave Engineering, both with Cambridge University Press. He is a co-author of four additional books on RF circuit design, and also cofounded Matrix Semiconductor.Erik Bruun received the M.Sc. and Ph.D. degrees in electrical engineering in 1974 and 1980, respectively, from the Technical University of Denmark. In 1980 he received the B.Com. degree from the Copenhagen Business School. In 2000 he also received the dr. techn. degree from the Technical University of Denmark.From January 1974 to September 1974 he was with Christian Rovsing A/S, working on the development of space electronics and test equipment for space electronics. From 1974 to 1980 he was with the Laboratory for Semiconductor Technology at the Technical University of Denmark, working in the fields of MNOS memory devices, IL devices, bipolar analog circuits, and custom integrated circuits. From 1980 to 1984 he was with Christian Rovsing A/S. From 1984 to 1989 he was the managing director of Danmos Microsystems ApS. Since 1989 he has been a Professor of analog electronics at the Technical University of Denmark where he has served as head of the Sector of Information Technology, Electronics, and Mathematics from 1995 to 2001. Since 2001 he has been head of ÿrstedïDTU.His current research interests are in the areas of RF integrated circuit design and integrated circuits for mobile phones.