Source/Type: CompoundSemi Online -- Compound Semiconductor Supply Chain News - Reported News

Nitronex and Nujira Jointly Develop High Efficiency WiMax Power Amplifier
Author: CompoundSemi News Staff

April 23, 2008... UK-based Nujira and Nitronex of Durham, North Carolina USA, are collaborating to create a power amplifier (PA) reference design for WiMax basestations Nujira revealed that it delivers over 45 percent efficiency using GaN devices and Nujura’s High Accuracy Tracking (HAT) technology. Nujira reports that in its collaboration with Nitronex, the companies were able to realize over 44dBm of linear power with 45 efficiency at a linearity of -55dBC using a 4 channel WCDMA waveform and conventional DPD (Digital Pre-Distortion) techniques. Nujira noted that the results were achieved using production ready devices from both companies. Nujira further reported that this same solution achieved 43.2dBm of linear power with 43percent efficiency under a demanding WiMAX waveform with 20MHz video bandwidth and 8.2dB PAR.

“Nitronex believes that GaN devices will most clearly establish their value when combined with advanced power amplifier techniques such as Nujira’s HAT technology,” said Chris Rauh, VP of marketing and sales at Nitronex.

Nujira VP strategy & marketing Julian Hildersley added, “Nujira HAT envelope tracking technology can greatly enhance the efficiency of power amplifiers. ... The same Power Modulator module can equally well be applied to WiMax, WCDMA or even DVB and other transmission. Our reference design work with Nitronex very effectively demonstrates how well our technology works in a real circuit.” Nujira News Release

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