We are looking forward to bringing you more quality articles in the new year. Next up, look for a series of year-end features on a specific technology or topic in the "What Every RF Engineer Should Know About x" series. The topics are based on your top searches for the year, and will include OFDM/WiMAX, oscilloscopes, Zigbee, RFID, and power amplifiers. Also new for 2009 is a planned "RF in Action" series, which will take a look at some end-use applications and drill down to the RF issues that make it all happen.

For now, here are your winners, and congratulations go out to the writers of these popular articles:

#1: Radio Architectures: Receivers, LOs, and Mixers by Christopher Bowick

#2: RFID Basics: Antenna Gain and Range by Daniel M. Dobkin

#3: Fundamentals of ISM-Band and short range device antennas, Part 1 By Matthew Loy and Iboun Sylla, Texas Instruments

#4: Mobile WiMAX PHY (RF) operation and measurement, Part 1 By Peter Cain, Agilent Technologies

#5: Improving multi-carrier PA efficiency using envelope tracking By Gerard Wimpenny, Nujira

#6: The Basics of ZigBee Testing, Part 1: Transmitters By David A. Hall, National Instruments

#7: SDR Basics Part 2: Receivers By Bruce A. Fette

#8: Sniffing GSM off the air By David A. Hall, National Instruments

#9: Software Defined Radio: What Every RF Engineer Should Know By Janine Love, RF DesignLine

#10: How to characterize surface-mount RF devices By How-Siang Yap, Cecelia Ow, and Mounir Adada, Agilent Technologies EEsof EDA division