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Widest band amplifier ever at 235 GHz opens door to ultrafast broadband

Last Updated Aug 2015
By: Michael Nystås

An exciting research collaboration between University College London, UCL, and Chalmers has resulted in the design and testing of the widest band amplifier ever reported.

The work was led by professor Herbert Zirath, head of the Microwave Electronics Laboratory at the Department of Microtechnology and Nanoscience at Chalmers, and professor Izzat Darwazeh, head of the Communications and Information Systems Group in UCL Electronic and Electrical Engineering.

The research team was delighted that the new amplifiers tested achieved results so close to design predictions; exceptionally wide broadband operation; from low GHz frequencies to frequencies exceeding 235 GHz, and provided a gain exceeding 15dB, translating to a gain bandwidth product of approximately 1.5 THz. The design team believes this amplifier is at least twice as fast (in terms of bandwidth) as the fastest amplifier reported to-date.

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