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Industry News

New Synthesis and Simulation Software to Enhance the Design Process

How much automation are current electronic design automation (EDA) tools providing? While the RF computer aided engineering (CAE) industry has a lot to offer in the way of automated circuit and system analysis, what about automated circuit synthesis? The circuit design project that starts with one of the typical...
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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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A Thorough RF and Microwave Circuit Design Method to Streamline the RFIC Development Process

Radio-frequency (RF) circuit design has become more complicated as today’s products and technologies have evolved, while at the same time the required design cycle times have been reduced. This presents problems for designers using traditional RF and microwave design techniques, which utilize similar procedures whether done with simulation software...
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An E-/D-mode pHEMT Process for High Performance Switch and Amplifier Components Utilizing Multi-level High Density Interconnects

A robust pseudomorphic high electron mobility transistor (pHEMT) process offering enhancement- and depletion-mode GaAs/AlGaAs/InGaAs transistors possessing 0.5-μm gate lengths with a double recess layout is presented and discussed. The E-mode devi...
Mobile telecommunication devices continue to add functionality and complexity particularly in regards to the trend of integrating more wireless bands such as GSM, E-GSM, CDMA, W-CDMA, DCS and PCS. This trend has increased the complexity of the transmit/receive and diversity antenna switch components resulting in a migration away from...
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Miniature W-band Low Noise Amplifiers

Traditionally products operating at millimeter-wave (mm-wave) frequencies could only be fabricated using waveguide technology, which restricted their application to low volume scientific applications such as radiometers and plasma diagnostics. Waveguide components suffer the disadvantages of high manufacturing complexity, large volume and high cost when dimensions become small at frequencies...
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WIN and Global to Merge

Global Communication Technology Corp. (GCT), the Taiwan-based GaAs MMIC foundry service provider, will merge with one of its major competitors, WIN Semiconductors Corp. (WIN). The shareholders meetings of the two companies met separately to approve the definitive merger agreement and confirm an equity swap at a 1:1.6 ratio (1.6...
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Around the Circuit

Industry News Smiths Group announced the acquisition of TRAK Communications Inc. for $111.5 M (GBP 63m) from Veritas of New York. TRAK will form part of Smiths Interconnect, a supplier of application specific electronics for military and commercial markets. The acquisition is the fifth Smiths has announced since presenting...
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BASD Supplies Rapid Air Inflated Towers to US Army in Iraq

Bosh Aerospace Division (BASD) of Information Systems Laboratories (ISL), San Diego, CA, announced that it is supplying several variants of a DARPA-sponsored surveillance rapid air inflated tower (RAFT) to US Army forces in Iraq for evaluation. A company spokesman stated, “RAFT will provide ‘high ground in a box’ to...
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