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International Report Asia/Pacific Region Sets the Standards Transparency, inclusion and the needs of developing nations were among the main topics discussed by the twenty-two top executives representing the national standards bodies of the Asia/Pacific region when they convened at ASTM International for a two-day Open House. The recent event...

RF and Microwave Semiconductor Device Handbook Mike Golio, Editor-in-Chief CRC Press 311 pages; $99.95 ISBN: 0-8493-1562-X The aim of this book is to provide a single volume comprehensive reference for high frequency semiconductor devices. Written by twenty experts in their field, it is intended to be a starting point...

Lightweight 0.190" spaceflight microwave cable assemblies have been introduced that weigh 20 percent less than the company's traditional 0.190" cable assemblies. The new cables are qualified to operate up to 18 GHz over a -100° to +125°C temperature range and are designed to meet the rigorous requirements of the...

A new miniature wide band frequency synthesizer has been introduced that operates from 2.25 to 18 GHz, permits 3 ms tuning, exhibits a volume of 334.3cc (20.4 in 3 ), consumes just 22 W of DC power and provides a clean RF output spectrum with an absolute accuracy better...

Over the last several years, III-V heterojunction bipolar transistors (HBT) have become an increasingly important technology for a variety of rapidly growing markets. GaAs-based HBTs now play a major role in wireless communications. Key applications include power amplifiers for handset phones, wireless LAN and numerous other high speed analog...

There are a number of communications, radar and imaging applications spanning Ka-band through W-band (26 to 110 GHz) that require transmitter output powers in the range of a few watts to a few tens of watts. Vacuum-tube sources and amplifiers have long been available that can produce output power...

For specific applications, there is a need for materials or composite structures which can reflect and/or absorb the electromagnetic (EM) energy incident upon them in a desired or controllable fashion. Such reflective EM absorbing/reflecting materials 1-3 are useful in designing smart radar cross-section (smart RCS) surfaces and radio frequency...

ANTENNAS Everett, Carl L . "Using Guided Wavelength as a Basis for the Design of Dielectric Rod Antennas," No. 5, p. 222. Haupt, Randy "Generating a Plane Wave in the Near Field with a Planar Array Antenna," No. 9, p. 152. Jang, Yong-Woong and Ho-Sub Shin "A Wideband and...

The detonation by the United States of a nuclear warhead 30,000 feet above Johnston Atoll in July 1962 lit up the night sky above the Hawaiian Islands, 800 miles away. It also created a power surge that shut down the streetlights and phone system of Oahu as well as...

Baseband pulses are video or carrier-less pulses of very short duration. Their spectral content is concentrated primarily from zero frequency through the microwave region of the spectrum. This tutorial attempts to describe some of the vagaries of these pulses and their use in ground penetration radars and communications. Figure...