Nujira samples low noise second-generation Envelope Tracking chip for smartphones

October 11, 2012 // By Paul Buckley
Envelope Tracking technology pioneer Nujira Ltd, has begun sampling the company's next generation ET IC for mobile handsets, the NCT-L1200, to lead partners.

The second product in the company’s Coolteq.L ET product family, Nujira’s NCT-L1200 has already been delivered to several key platform chipset vendors, and claims to be the only product currently available on the market that supports the maximum 20 MHz channel bandwidth of LTE.

Nujira’s Coolteq.L family of ET power modulators for handsets reduces wasted energy from PAs in mobile handsets by more than 50%, cutting heat dissipation and extending battery life. Earlier in September 2012 Nujira raised a further $12 million in its latest funding round, securing the rollout of its Coolteq.L IC technology and supporting the ramp to volume production.

“Our latest Coolteq.L chip meets stringent industry noise requirements, and continues to deliver significant technical advantages over competitive solutions. Critically Nujira’s patented ET architecture is the only configuration that supports 20 MHz bandwidths for LTE now, and is also scalable to support the future bandwidth expansions required for LTE-Advanced,” commented Tim Haynes, CEO of Nujira.

Reducing the power consumption of PAs is one of the key challenges facing 3G and 4G smartphone OEMs as demand for higher data rates continues to drive network standards. The improved spectral efficiency of the 4G LTE standard enables higher data bandwidth, but comes at the price of reduced energy efficiency in the RF PA. Further penalties come from an increase in the average RF power transmitted from the handset, and the need to support an increasing number of frequency bands in the phone to support global roaming. This not only impacts on battery life, but also on handset temperature - a growing problem for smartphone designers. Unaddressed, these issues will degrade the user experience and delay the adoption of 4G smartphones.

Nujira announced the first commercial IC in its Coolteq.L product family of ET power supply modulators for mobile handsets, the NCT-L1100, in February 2012 at Mobile World Congress.

Nujira is currently engaged with 16 major smartphone chipset suppliers to embed its