Nujira Releases New 16-Band ET RF Front-End For Global LTE Handsets
Nujira Ltd, the world leader in Envelope Tracking (ET) technology, has recently released its new “
Mobile handset developers are currently faced with a number of RF engineering challenges. They need to simultaneously support different operating modes (e.g. LTE, TD-LTE, WCDMA, HSPA and GSM) in one handset, while also supporting an increasing number of frequency bands. LTE is today deployed worldwide in 20 frequency bands from 700 MHz to 2.7 GHz, which today each require a dedicated PA and RF filter.
With this discrete design approach, up to nine variants of some popular smartphone models are required to cover all regions and operators. This results in increased design and verification effort, numerous production runs, delayed product rollouts and a complicated, costly inventory management process.
Nujira is also supplying a complete suite of MIPI RF Front End (RFFE) control scripts, ET shaping tables, and production calibration algorithms for the solution, minimizing time-to-market for platform vendors and OEMs.
Tim Haynes, CEO, Nujira added: “Nujira is the only ET vendor with the ability to support our customers with these complex, leading-edge RF reference designs. Our new reference design provides vendors with a rapid solution for single-SKU global 4G handsets which can beat today’s 3G phones on cost, size, RF performance and power consumption.
“Adding Envelope Tracking to a couple of specific LTE bands is relatively straightforward, but doesn’t by itself solve the cost, footprint and power consumption challenges the industry is facing. What the mobile industry really needs is Multi-Mode, Multi-Band reference designs that can be quickly incorporated into handsets. MMMB front ends are undoubtedly the future, and Nujira’s reference design is the first result of our close collaboration with the world’s leading PA vendors to make ET MMMB RF front ends a commercial reality.
Nujira’s new reference design is enabled by Envelope Tracking (ET) technology. Its 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. Coolteq.L devices are compatible with the industry-standard MIPI and OpenET interfaces supported on a growing number of ET-enabled 3G and 4G modem chipsets. The design supports GSM operation in 850, 900, 1800, and 1900 MHz bands, 3G operation in the 850, 900, 1800, 1900 and 2100 MHz bands, FD-LTE in the 700, 800, 850, 900, 1700, 1800, 1900, 2100 and 2600 bands, and TD-LTE in the 2300, 2600 and 2700 MHz bands.
Nujira’s mission is to dramatically improve the energy efficiency of transmitters for 3G and 4G handsets, base stations and TV broadcast applications by reducing the amount of waste energy dissipated as heat in the RF Power Amplifier circuit.
Nujira’s patented Coolteq Modulator technology dynamically controls the power supply to the circuit in line with the amplitude of the signal, enabling the creation of highly efficient RF Power Amplifiers. Today Coolteq technology powers the industry’s most energy efficient and highest performing 4G base stations and TV broadcast transmitters. Nujira is now applying the same energy efficient technology to smartphones and other portable wireless devices.
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