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Industry News

Group Reaffirms Support for Rapid Adoption of EPCglobal Standard

Leading manufacturers and technology providers of data collection and radio frequency identification (RFID) have submitted an RFID protocol definition that would pave the way for rapid adoption of a standard new worldwide RFID standard known as Electronic Product Code (EPC), Ultra-high Frequency (UHF) Generation 2. Companies supporting the protocol...
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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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Characteristics of a Wide-band, High Gain, Eight-element Slot Antenna for PCS, IMT-2000 and WLL-band

The numerical simulation and experimental implementation of a T-shaped microstrip-fed printed eight-element slot antenna array are presented in this article. The proposed antenna is analyzed by the finite-difference time-domain (FDTD) method. The depen...
There is a requirement for low profile and lightweight antennas for microwave communications equipment. According to these requirements a microstrip antenna is best suited. Microstrip antennas have a conformal structure, are low cost and easy to integrate with solid-state devices, as well as low profile and lightweight. However, microstrip...
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A Review of Radiation Effects on Human Operators of Hand-held Radios

This article presents a review of biological effects of radio frequency radiation, and radiation safety and regulations. The interaction between handset antennas and biological tissues, quantified by the specific absorption rate (SAR), is explained.
There has been a dramatic increase in the worldwide use of radio frequency (RF) technologies in the last two decades, especially in personal communications. In fact, since the introduction of commercial systems in 1983, cellular telephone service has been one of the fastest growing segments of the US telecommunications...
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