{"id":651813,"date":"2013-04-11T07:30:49","date_gmt":"2013-04-11T11:30:49","guid":{"rendered":"http:\/\/gigaom.com\/?p=630024"},"modified":"2013-04-11T07:30:49","modified_gmt":"2013-04-11T11:30:49","slug":"quantance-takes-in-another-12m-to-improve-4g-battery-life","status":"publish","type":"post","link":"https:\/\/mereja.media\/index\/651813","title":{"rendered":"Quantance takes in another $12M to improve 4G battery life"},"content":{"rendered":"

Phone power supply maker Quantance has raised another $12 million in funding,\u00a0 which the company plans to put to use commercializing its battery-saving envelope tracking technology<\/a>.<\/p>\n

Envelope tracking might sound like a certified mail service, but it\u2019s really a technology used to tame LTE\u2019s normally power hungry ways. LTE is unique among cellular technologies in that its power levels rise and dip dramatically throughout the course of a transmission \u2013 think of an LTE signal like the wild crescendos and quiet interludes of classical music.<\/p>\n

Envelope tracking closely matches the power fed into the radio with the power needed at given moment to transmit. The result is a highly efficient power supply that can reduce a phone\u2019s power drain by as much as 25 percent over current 4G devices. Given the miserable battery life of first generation of LTE phones<\/a>, a 25 percent improvement is nothing to scoff at, and once combined with other power-saving technologies<\/a> such as integrated handset silicon as well as improved batteries, we\u2019ll see phones that can go much longer between charges.<\/p>\n

Quantance\u2019s latest $12 million round is its Series D with all of its existing investors — TD Fund, Granite Ventures, InterWest Partners and DoCoMo Capital \u2013 chipping in. Quantance raised $30 million in its previous rounds<\/a>, going all the way back to 2006, the last of which was an $11 million investment in 2011<\/a>.<\/p>\n

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