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Meeting and Seminar Archive:

Date:  Apr 14, 2008

Title: RF Systems Design :Fundamental Theory and WiMAX Examples

Speaker: Tony Liu, Ph.D.


Abstract: The rapidly growing wireless communication market creates a high demand for radio frequency (RF) transceivers. While low-cost, low-power, and small form factors are the necessary requirements for modern RF system, achieving reliable and good quality communication links is definitely an essential design factor in wireless communications. To accomplish a successful RF transceiver design meeting all these requirements, not only circuit designers but also system engineers need to closely work together to achieve the goal.

This presentation is aimed to give an introduction of RF system design – including wireless communication overview, basic concepts in RF design, RF transceiver architecture, analog-to-digital converter, and a WiMAX RF system design example. Some fundamental RF system design questions, e.g. how much RF gain, how many dB of dynamic range, how many bits of ADC, what RF transceiver architecture we need, are illustrated in a WiMAX receiver example.



Dr. Tony Liu has been working on WiMAX broadband wireless access technology since 2004. He was a PHY architect of Rosedale 2 – Intel’s first OFDMA WiMAX chip. Previously, Dr. Liu was a department and project manager for the WLAN 802.11g project in SOC Technology Center (STC) of ITRI. He was a Senior Member of Technical Staff at Televersal Systems and Morphics Technology from 2000 to 2002, where he developed programmable baseband chip for 3GPP WCDMA subscriber and base stations. From 1998 to 2000, Dr. Liu was an R&D Systems Engineer at Globalstar in San Jose.

Dr. Tony Liu received his Ph.D. in Electrical Engineering from the University of Southern California in 1997, his M.S. in Communication Engineering from National Chiao Tung University, Taiwan in 1990, and his B.S. in Electrical Engineering from Tamkang University, Taiwan, in 1988. He has published many technical papers in the IEEE journal and international conferences.

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