Nujira raises further $12m
Cambridge-based Nujira has raised a further $12m “securing the roll-out of the company’s technology for mobiles and supporting the ramp to volume production”, said the firm.
Its technology is a switching dc-dc converter that reduces the power consumption of RF power amplifiers, including those in phones and basestations, by supplying the amplifier from a rail that tracks the envelope of the RF signal.
The challenge addressed by the firm’s intellectual property is to track agile envelopes with high crest factors.
Following discrete circuit designs for basestations, Nujira is producing its technology, dubbed Coolteq.L, in chip form for use in phones.
Its first chip, the NCT-L1100, was announced in February at Mobile World Congress, with the firm claiming that it can cut amplifier dissipation in mobile handsets by “more than 50%”.
The latest funding round included a new investor, Zurich-based SAM Private Equity, as well as existing investors Amadeus Capital Partners, Climate Change Capital, Environmental Technologies Fund, NES Partners and angel investors.
“Joining Nujira’s existing cleantech and technology investors at this pivotal time in the market adoption of envelope tracking is an exciting opportunity,” said SAM investment director Keimpe Keuning. “With all major smartphone vendors poised to adopt envelope tracking in the next few years, Nujira’s technology and patent position marks them out as the key player in this segment.”
Nujira’s patents cover not only its envelope tracking modulator, but aspects of timing alignment, linearisation with or without digital pre-distortion, and production-line calibration.
According to Nujira, it is engaged to add envelope tracking to the reference platforms of 16 phone chipset suppliers, and expects to be designed into 4G smartphones in 2013.
SAM is part of the Dutch Rabobank Group.