Project Analog - March 2008 - (Page 10)

fig. 1 ultrawidEband fills a gaP in thE bandwidth vs. distancE PlanE. fig. 2 a numbEr of standard usb dEvicEs can usE a wirElEss hub to connEct to a host. allowing easy peripheral connection without the clutter of wires. wireless usb has speed and familiarity Wireless USB personal area networking technology has advantages over other protocols, including higher speed, the strength of USB and the Certified USB brand among consumers, and the knowledge that many manufacturers have of the USB architecture (see Fig. 2). Wireless USB extends this existing and well-understood infrastructure, rather than completely uprooting it and replacing it with something new. Adapters for legacy hosts and hubs that can wirelessly connect a number of wired USB devices will be among the first implementations until the Certified Wireless USB technology is embedded. Adapters can provide a seamless upgrade path with forward and backward compatibility between wired and wireless USB devices and the WiMedia Alliance will ensure maximum industry coexistence and interoperability. Contents Viewpoint Wireless Communication Using IrDA® Wireless Design Choices Advanced Communication Solutions for Lighting Analog news access points, routers, and other networking gear, but for peripheral devices such as digital cameras, portable hard disks, scanners, digital music players, keyboards, mice, and many others, this is not a natural fit and may impose special challenges (see Fig. 1). ultra-wideband stands out Bluetooth, which was designed as an ad-hoc peer-to-peer peripheral interconnect, is better suited to peripherals and many of them use it. However, another constraint is at play. Many peripherals require data throughput rates that are higher than can be delivered by the current implementation of Bluetooth. UWB shines in this area. By using the wide frequency spectrum available, UWB-based devices are able to deliver data throughput speeds of up to 1 Gbit/s without expensive spectrum licenses. For peripheral products that require high data rates and do not need long range, UWB is an ideal choice. The Bluetooth SIG has announced plans to couple UWB technology with the existing Bluetooth protocol, with the first products expected in late 2007. The world’s first standards-based UWB-based technology will be Certified Wireless USB from the USBIF. Providing speeds of 480 Mbits/s at up to 3 m, the short range and low power of Wireless USB allows multiple high-speed wireless devices to coexist peacefully within a small physical area without interference. For example, in a typical home, wireless LAN technologies such as 802.11b/g/n can provide housewide coverage of up to 100 Mbits/s of shared throughput. Overlaid in the same area, Wireless USB can provide multiple independent nonoverlapping 480-Mbits/s clusters, Microchip analog page Interface products overview Sample center microchipDIRECT Reference designs/ app notes Technical training • 10 · ProjeCt ANALog · mAr 08 http://www.microchip.com http://www.microchip.com/analog http://www.microchip.com/analog http://www.microchip.com/interface http://www.microchip.com/interface http://sample.microchip.com/Default.aspx?testCookies=true http://www.microchipdirect.com/catalogselection.aspx?returnURL=default.aspx http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1469&filter1=function&redirects=appnotes http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1469&filter1=function&redirects=appnotes http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1423

Table of Contents Feed for the Digital Edition of Project Analog - March 2008

Project Analog - March 2008 Contents Viewpoint About Project Analog Sponsor Wireless Communication Using the IrDA® Standard Protocol Wireless Design Choices Advanced Communication Solutions for Lighting Putting 10-GbE PHY Options Into Perspective Ease Into the Flexible CANbus Network Technology and Drivers for Mobile WiMAX Analog News—Analog News from Multiple Sources Enter to Win an iPhone Contact Project Analog Sponsor Treelink Microchip Advanced Parts Selector (MAPS)

Project Analog - March 2008

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