Nujira will Energetically Develop 4G Handset in 2012

Published:2011/12/19 0:44:00 Author:Li xiao na From:SeekIC

Nujira is going to turn on 4G technology in the year of 2012, but the problem of efficient power should be solved. With more than 35 networks now live, 2011 was the first year of significant LTE/4G deployments around the world. This kind of phone has a fantastic speed, but the service life of battery is short.

In order to solve the problem of battery, manufacturers put bigger batteries into the phone. However, the RF power amplifier is the main element, which decides the power budget. Most current phones support just 6 or 7 bands out of the 18 in use, but operators are now specifying 14 or 15 bands as the minimum requirement for global roaming. Each frequency band current requires a dedicated PA device, so broadband Pas are the only solution, but they also suffer from low energy efficiency.

The Envelop tracking is considered to be the standard PA architecture for the next generation of handsets for it is the only power optimization technology which delivers high efficiency over the entire spectrum used for 3.5G and 4G. In order to develop specifications that facilitate wider adoption of Envelope Tracking in smartphones and other mobile devices, the MIPI Alliance formed a Subgroup in November. Nujira, Intel, Motorola, Nokia, Panasonic, Qualcomm, and Texas Instruments support this group.

Apart from the CO2 emissions, the smaller, lighter, cheaper products are also the key point of energy efficiency. The new Envelope Tracking IC of Nujira not only doubles the efficiency of 4G terminal radios but also reduces their cost. Nujira also invests more money on their products. The IC design centre is opened in Edinburgh regardless of the difficult global environment. In order to represent the most comprehensive IP portfolio in Envelope Tracking and strengthen the technology leadership, Nujira also built up portfolio to around 135 patents.

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