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World's most complex silicon phased-array chip developed at UC-San Diego
Date:10/30/2007

the transmitter chip. Our work addresses the most costly part of the phased array the 16:1 divider, phase shifters, amplitude controllers and the uniformity and isolation between channels, said Rebeiz

The chip also contains all the CMOS digital circuits necessary for complete digital control of the phased array, and was done using the commercial Jazz SBC18HX process. This is a first and greatly reduces the fabrication complexity of the phased array. The chip has been designed for use at the defense satellite communications frequency the Q-band - which goes from 40 to 50 GHz.

If you take the same design and move it to the 24 or 60 GHz range, you can use it for commercial terrestrial communications, said Rebeiz who is also a lead on a separate project, funded by Intel and a UC-Discovery Grant, to create silicon CMOS phased array chips that could be embedded into laptops and serve as high speed data transfer tools.

The Intel project is a collaboration between Rebeiz, Larry Larson and Ian Galton all electrical engineering professors at the UCSD Jacobs School of Engineering. Larson also serves as the chair of the Department of Electrical and Computer Engineering.

If you wanted to download a large movie file, a base station could find you, zoom onto you, and direct a beam to your receiver chip. This could enable data transfer of hundreds of gigabytes of information very quickly, and without connecting a cable or adhering to the alignment requirements of wireless optical data transfer, explained Rebeiz who estimated that this kind of system could be available in as little as three years.

Phased Array Background Information:

Phased arrays have been around for more than half a century. They are groups of antennas in which the relative phases of the signals that feed them are varied so that the effective radiation pattern of the array is reinforced in a particular direction and suppressed in undesired directi
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Contact: Daniel Kane
dbkane@ucsd.edu
858-534-3262
University of California - San Diego  
Source:Eurekalert

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