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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....

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...

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...

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...

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....

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...

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...

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,...

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...

Cobham Defence Electronic Systems Division has been awarded with the supply of its COM-231 vehicle mounted microwave antennas to the US Army, Navy, Air Force and Marine Corps, over a five-year period. While the award is on an Indefinite Delivery Indefinite Quantity (IDIQ) basis with an initial one-year contract...