Industry News

Hungary Gets Microwave Radio Solution with a Plus

Nokia has signed a deal with Vodafone Hungary for the supply of its FlexiHopper Plus microwave radio solution to increase the capacity of the company’s existing nationwide network. This new variant of the successful microwave family enables operators to reduce the occupied frequency spectrum by half, resulting in significant...
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€30 M Russian Contract for Siemens

Russian mobile provider, ZAO SMARTS, has commissioned Siemens Information and Communication Mobile (Siemens Mobile) to deliver telecommunications equipment worth €30 M. The order encompasses delivery, installation and start-up of GSM technology (transmission, reception and switching systems), microwave systems, and GPRS network elements for the company’s subsidiary in central and...
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The Book End

Channels, Propagation and Antennas for Mobile Communications Rodney Vaughan and Jorgen Bach Andersen The Institution of Electrical Engineers 784 pages; $145, £89 ISBN: 0-85296-084-0 This book introduces the principles, theory and applications of physical layer wireless/mobile communications where antennas, propagation and the radio channel used are interrelated. It offers...
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An IEEE 802.15.4 Compliant and ZigBee-ready 2.4 GHz RF Transceiver

With numerous lucrative applications envisaged, the ZigBee Alliance is developing a standard-based wireless network platform, optimized for wireless monitoring and control applications, ensuring interoperability between products using the same application profile. The IEEE 802.15.4 standard, ratified in May 2003, specifies the physical (PHY) and medium access control (MAC) layers,...
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A Low Cost RF Transceiver for 2.4 GHz DSSS Short-range Communication Systems

In this article, the design and experimental results of a low cost RF transceiver for short-range wireless systems are described. The transceiver is composed of a direct Gaussian frequency shift keying (GFSK) modulation transmitter and a dual conversio...
The development of short-range wireless systems has captured the industry’s imagination for several decades. 1 Many of these systems operate at the internationally available unlicensed industrial, scientific and medical (ISM) 2.4 GHz frequency band. The attraction of these systems is that they can offer low cost, small physical size...
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