Qi wireless charging
Qi is a wireless charging technology used to wirelessly power electronic devices such as smartphones, tablets and wearable computing products. Qi, which is pronounced like "chee" and is taken from the Chinese word for "natural energy," was created by the Wireless Power Consortium in 2009.
The consortium itself formed in 2008 as electronics and mobile device manufacturers like Sony, Samsung, LG, Motorola and HTC partnered to create a standard that would utilize electromagnetic induction principles to power devices without the need for wires.
Qi's Competition in the Wireless Charging Market
The Wireless Power Consortium's resulting Qi standard has emerged as the frontrunner in the battle for wireless charging market share against competing technologies such as the Power Matters Alliance's PowerMat and the Alliance for Wireless Power's (A4WP) Rezence.
The Power Matters Alliance and the A4WP have since allied as of February 2014 in an agreement to share their specifications in an effort to better compete against the Qi standard.
How Qi Wireless Charging Works
The Qi wireless charging standard enables inductive electrical power transfer over a maximum distance of up to 1.6 inches. A Qi Receiver, which is a mobile device compatible with the Qi standard, is placed on a Qi Sender charging station, which transmits power to the receiving device.
Mobile smartphones and tablets in a Qi wireless system are charged via resonant inductive coupling, or loosely coupled charging, in which multiple devices can be charged at once without the need to place the device(s) in a specific spot and position. This is in contrast to tightly coupled charging, wherein a device needs to be precisely positioned on a wireless charging pad before it can be charged.
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
This chat guide lists more than 1,460 text message and online chat abbreviations to help you translate today's texting lingo. Read More »SEO Dictionary
From keyword analysis to backlinks and Google search engine algorithm updates, our search engine optimization glossary lists 85 SEO terms you need... Read More »Slideshow: History of Microsoft Operating Systems
Microsoft Windows is a family of operating systems for personal computers. In this article we look at the history of Microsoft operating... Read More »
Computer architecture provides an introduction to system design basics for most computer science students. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »Java Basics, Part 1
Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »