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Industry News

Catalog Update

Application Note This application note, “Preamplifiers and System Noise Figure,” is designed to assist engineers in learning how to improve the accuracy of their measurements by using a low noise amplifier in front of a spectrum analyzer to reduce the effective noise figure of RF and microwave test systems....
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New Products

10 W Power Divider This new line of 10 W power dividers is designed for antenna and test applications. The model 151-201-008 is an eight-way, 50 Ω power divider that operates in a frequency range from 800 to 2000 MHz. This unit offers 22 dB typical isolation, 1.5 dB...
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The Book End

Phased Array Antennas: Floquet Analysis, Synthesis, BFNs and Active Systems A.K. Bhattacharyya Wiley Interscience • 514 pages; $125 ISBN: 0-471-72757-1 The purpose of this book is to present in a comprehensive manner the analysis and design of phased array antennas and systems. The book includes recent analytical developments in...
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EADS Commands Control in Oman

The Ministry of Defense of the Sultanate of Oman has announced the signature of the Certificate of Final Acceptance for a contract covering the expansion and modernization of EADS' existing Joint Command, Control, Communication, Computers & Information (C4I) system, OFEQ2000. This follows on from the signing of the outline...
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The Requirements and Procedures for Testing WiMAX Equipment

The potential for WiMAX technology is driving its development at a pace aimed at effective mass deployment. This article outlines the requirements necessary for the development of specific test procedures and equipment.
WiMAX is a technology for fixed, nomadic and mobile applications that promises the delivery of broadband wireless access to the masses. For fixed and portable access applications, a delivery capacity of 40 Mbps per channel can be expected for typical cells with a radius of 3 to 10 km....
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A Triple-band Polygonal Slot Antenna for WiMAX Applications

A printed polygonal slot antenna, fed by a 50 Ω microstrip-line and with two narrow strips for three-band operation, is proposed and experimentally studied. The polygonal slot antenna was found to be broadband (1.85 to 5.83 GHz). When two narrow s...
In recent years, wireless communications have progressed very rapidly. The IEEE 802.16 Working Group has created a new standard, commonly known as WiMAX (Worldwide Interoperability for Microwave Access), for a low cost, broadband, wireless access at high speed, which is easy to deploy. 1 WiMAX technology can reach a...
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A 60 GHz Millimeter-wave CMOS RFIC-on-chip Dipole Antenna

This article presents a 60 GHz millimeter-wave RFIC-on-chip dipole antenna, fabricated with a 0.18 μm CMOS process. A planar dipole-antenna structure with an integrated microstrip via-hole balun was adopted to design this RFIC-on-chip antenna. The...
There is an increasing demand for broadband multimedia components to satisfy the ever-increasing capacity of wireless networks. In particular, for dense local communications, the 60 GHz band for wireless personal area network (WPAN) applications is of special interest for short-range communications, due to the RF attenuation of the atmospheric...
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A Low Profile Multi-band U-shaped Aperture-coupled Microstrip Antenna with a Coil

In this article, an L-shaped probe-fed, U-slot patch antenna with a coil element is studied. The L-shaped probe feed is used to enhance the impedance matching, which is necessary because of a low radiation resistance in the usable band. The coil contri...
Microstrip patches are an attractive type of antenna because of their low cost, conformability and ease of manufacture. The aperture-coupled configuration 1 also provides the advantage of isolating spurious feed radiation by using a common ground plane. The primary barrier to the implementation of these antennas in many applications,...
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Siemens Answers Emergency Call in Norway

The Norwegian Ministry of Justice and the Police has named Siemens as its turnkey contractor for the installation of a new countrywide emergency call network over the next five years and for the operation of the network for 20 years. The new network is based on Terrestrial Trunked Radio...
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