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Analog Reference Interface for Envelope Tracking launched

Posted: 20 Sep 2013     Print Version  Bookmark and Share

Keywords:MIPI Alliance  Analog Reference Interface for Envelope Tracking  eTrak  power amplifiers 

The MIPI Alliance has announced the availability of its Analog Reference Interface for Envelope Tracking (eTrak) specification. eTrak is a multi-source vendor, independent interface that provides interoperability between multiple 3G/4G modem chipsets and Envelope Tracking Power Supplies (ETPS).

By integrating eTrak into RF modem chipsets and ETPS, the specification allows modem ICs to control the supply voltage of RF power amplifiers, which improves the efficiency of the transmitter, one of the three large power consuming elements in a mobile device.

"MIPI's eTrak specification benefits any 3G or 4G mobile device – cell phones, tablets, data cards, to name a few. We do expect the greatest benefit of envelope tracking to be in lowering power consumption and improving battery life for high data rates communications like LTE and LTE-Advanced," said Joel Huloux, Board Chairman of MIPI Alliance. "We are already seeing modem vendors and ETPS vendors incorporating the specification into their products to ensure compatibility. OEMS have also expressed excitement for eTrak as well because it gives them flexibility in selecting components for their products and platforms."

eTrak provides a full analogue interface, not just a PHY. The eTrak specification is available for members to download from the MIPI Alliance website.





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