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Some methods of antenna modeling and measurement lead directly to radiation patterns and total radiated power without the intermediate, and often tedious or impractical, step of calculating self and mutual impedances. 1 Still, it is often desirable and necessary to know the input impedance for each element in the...

The introduction of three-dimensional (3D) electromagnetic (EM) Simulation launched a revolution in microwave design by allowing engineers to design, analyze and refine 3D microwave components on their computers. For the first time, designers could visualize the electromagnetic fields in their device, understand the device’s electrical behavior to an unprecedented...

Today’s test and measurement suppliers face ever-increasing pressure to deliver more cost-effective solutions to users. They strive for higher production rates while producing products with greater complexity. They are therefore being challenged to supply flexible, scalable and efficient test systems that solve these problems. Synthetic instruments that “synthesize” the...

Emerging radar cross section (RCS) measurement needs are making it increasingly necessary to take the measurement system to the target, rather than take the target to a fixed measurement site. With this in mind, QuarterBranch Technologies Inc. set out to build the first truly portable pulsed-IF RCS measurement system...

Microwave and Millimeter-wave Conversion Products MITEQ’s 515-page Microwave and Millimeter-wave Conversion Products Catalog features the company’s latest state-of-the-art mixers, image rejection mixers, modulators, multipliers and custom products. This detailed engineering reference manual features product specification sheets including typical test data, outline drawings, questions and answers, technical applications and notes....

High-power L-band Radar Amplifier The Aethercomm Model SSPA 1.2-1.4-200 is a high power, pulsed RF amplifier that is employed in military L-band radar systems and operates from 1200 to 1400 MHz. This PA was designed for L-band radars on fighter aircraft but can be employed in any system. The...

Monthly Worldwide Semiconductor Revenue The Semiconductor Industry Association (SIA) has released revenue numbers for September 2007 of $25.75 B (raw numbers not three-month moving average). The September numbers are up from $25.50 B in September of 2006 and represent 1.0% growth month-over-month versus 9.0% in August. January 2007 started...

Adaptive Radar Signal Processing Simon Haykin, Editor Wiley Interscience • 243 pages; $94.95 ISBN: 978-0-471-73582-3 This book focuses on two types of radar: Surveillance radar, the purpose of which is target detection in the presence of unwanted signals, interference and noise; and low tracking radar, which is complicated by...

Rectangular and Taper Chambers, Compact Ranges, Near Field Ranges. Reply to this Article Read all responses Win: The first five contributors are eligible to receive a complimentary copy of the textbook Electrical Engineering – A Pocket Reference from Artech House. There are a large number of different approaches to...

Published Friday, January 25, 2008 | Last Update 1.28.08 Here are your replies to the January Expert Advice column This month, Dr. Vince Rodriguez, Senior Principal Antenna Design Engineer with the Field Generation Group of ETS-Lindgren shares some thoughts on accurately testing today's high-frequency antenna patterns. Comments: A helpful...