Communications Technology

Connectivity is a key feature of modern embedded products. There’s a wide range of communications modes that can be used, but which is the best for your design? Should you use a wireless technology such as Wi-Fi or Bluetooth and, if so, which one should that be? Or would wired communication, such as Ethernet, be the best way forward?

In this section, New Electronics reviews the latest communications technologies and brings visitors to the website information on how these technologies are being applied.

A tangled web

A web of multi source agreements threaten to engulf 10Gbit transceiver modules. By John Walko.

Let’s get physical

As the communications industry – whether wired or wireless – strives towards ever higher data rates, the role of physical layer (PHY) devices is becoming increasingly important and, in some instances, contentious. It’s not surprising that the range of technologies, architectures and design options being offered is becoming increasingly complex. With Gigabit Ethernet and 10Gbit Ethernet gaining momentum, most competition will be played out in these sectors. PHYs basically provide access to the Media Access Control (MAC) layer through a management interface. If you consider high data rate optical links, such as Gigabit Ethernet, the PHY chip is really a mux/demux combination that acts as a liaison between optics and electronics, such as the framer.

In position

Joel Avey of Trimble explains how system integrators (with or without a background of gps experience) can determine which gps solution is appropriate for their applications.

Moving in

Linux is penetrating further into the network infrastructure, aided by network processors. By Bill Weinberg.

Phone key

1, 22 Sony Ericsson W810i 2006 2 Samsung SGH-R210S 2001 3 Sagem mc930 1999 4, 26 Philips Savvy 1999 5 Hyundai HGC300E 6, 25 Nokia RinGo 1997 7 unidentified 8 Motorola cd920 1998 9, 32 Bosch GSM509 2002 10 NEC DB2000 1999 11, 39, 40 Panasonic EB-G450 1997 12 Motorola v2288 2000 13 Philips Savvy Vogue 2001 14 Sony Ericsson P910i 2004 15, 34 Nokia 3510 2002 16 Samsung SGH600 1999 17 Ericsson T18S 1999 18 Kyocera K112 2003 19 NEC TR5E1000-9A 1988 20 Philips Fizz 1996 21 Apple iPhone 2009 23 Nokia 6301 2007 24 Sony Ericsson P990i 2005 27 Siemens C10 1998 28 Nortel M800 29 Auna Gigaset DECT phone 30 Alcatel OT Pro (issued by Barclaycard, in association with Cellnet) 1998 31 Motorola c520 1998 33 Philips Genie 1999 35 Motorola Micro TAC Classic 1989 36 Motorola Executive Phone 2 1992 37 Motorola mr201 38 Motorola mr30 1995

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