EE Seminar
TITLE: Introduction to RF front end
SPEAKER: Mr. Anand Gaurav
AFFILIATION: Freescale Semiconductors India Pvt., Ltd.
DATE & TIME: August 17, 2006 @ 4 PM
VENUE: DA-229, EE Seminar Room
ABSTRACT:
In present world of extremely competitive silicon industry,
wireless market is still growing. Cellular phones with camera,
terrestrial TV, GPS have already arrived in market. Addition of
all these at least extra cost and least extra power/area poses
major design challenge for the engineers. Global Positioning
System is a location-based navigation system consisting of 24
satellites which help you locate one's position, till sub-meters
accuracy range. Digital Television, watching television on your
cell-phone while on move, has also already become a reality. Such
RF communications implementations can be categories in two broad
category - RF frontend, receiving/transmitting the signal, mixing
with the carrier and Digital Baseband, the digital signal
processor.
RF frontend, a receiver, consists of LNA (Low Noise Amplifier)
followed by Mixer, Filter, Amplifier and then ADC and the
converted digital signal is sent to the baseband processor. For a
transmitter, the order is reversed with LNA replaced by Power
Amplifier.
Various RF communications standards at close-by carrier
frequencies, low strength of the signals, low power etc. Factors
make the field of RF design quite challenging and
interesting.
BIOGRAPHY:
Anand Gaurav is working at Freescale Semiconductors India Pvt.
Ltd as a senior design engineer in the Analog group. Prior to
joining Freescale in May, 2005, he worked with Texas Instruments
India Pvt. Ltd in Wireless RF group for 3 years. He graduated as
B.Tech, EE, IIT Kanpur in 2002. His area of work mainly involves
PLL and Oscillators. He has also experience in designs of PA,
LNA+Mixer, ADC etc. He has worked on diverse projects like
GPS, Bluetooth, DTV etc. For mobile phones.