Fujitsu 2007 Annual Report Download - page 33

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(4) WiMAX amplifiers with world-class power efficiency
The WiMAX*1 protocol enables the creation of next-generation wireless broadband networks that
allow users to easily send and receive large volumes of data outside or on the move. We developed new
data transmission amplifiers for WiMAX base stations and terminals. With the amplifiers for base
stations, we teamed up with KDDI Corporation, a Japanese telecommunications company, to develop
GaN HEMT for highly efficient
data transmission amplifiers highly efficient data transmission amplifiers utilizing gallium nitride (GaN) HEMT*2 technology. By
developing and adopting a HEMT crystal structure and incorporating digital pre-distortion technol-
ogy, we have roughly doubled power efficiency compared to conventional amplifiers. As a result, base
stations can be made more compact and energy efficient. With WiMAX mobile terminals, we created
compact, energy-efficient amplifiers with minimal digital signal distortion. As result, the usage time for
the mobile terminals can be increased by roughly 1.5 times, and data transmission speeds can be boosted
by approximately the same amount.
*1 Worldwide Interoperability for Microwave Access: A wireless network protocol based on the IEEE802.16 and IEEE802.16e standards. WiMAX
enables the provision of high-speed mobile connectivity services of 75mbps even when the user is traveling at speeds of up to 120km/h.
*2 High Electron Mobility Transistor: An ultra-fast field-effect transistor pioneered by Fujitsu in 1980.
Fujitsu Wins Prestigious Award at nano tech 2007
Held annually since 2002, nano tech is the world’s biggest international
nanotechnology exhibition and conference. We were honored to receive the nano
tech Award 2007, given to the best-of-show exhibitor in all categories, which rec-
ognized some of our latest R&D advances, such as quantum dot laser technology
for optical transmission systems, carbon nanotube wiring for future LSI devices,
and artificial antibodies (modified aptamers). In addition, we were praised by the
award committee for establishing QD Laser, Inc., a quantum dot laser company
that is advancing the practical application of nanotechnology.
nano tech Award 2007
Strategic Direction in Fiscal 2007
■ Develop new solutions leveraging our technology
value chain
We will pursue R&D efforts to create high-value-added solu-
tions that leverage and combine our wide array of cutting-
edge technologies in IT services, computers, networks,
electronic devices and other areas.
■ Key research themes in fiscal 2007
(1) Next-generation IT service technologies
(2) Next-generation server technologies
(3) Next-generation network technologies
(4) Technologies to create distinctive systems and devices
(new terminals, imaging, electronic paper, low power
consumption, reliability)
(5) Technologies in new fields/frontiers (nanotechnology,
robotics)
■ R&D in emerging new fields to support future businesses
• Peta-scale computing (next-generation supercomputer)
• Next-generation mobile communications technology
• Nanotechnology
• Intelligent Transport System (ITS) technology to
improve safety and security
• Humanoid robots with artificial intelligence
• IT that supports lifestyles in an aging society
• Environmentally friendly materials and solutions
■ Promoting joint research to identify new possibilities in
technology and products
We will aggressively pursue joint research with universities,
research institutes and corporations worldwide.
Annual Report 2007 31