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Modern Microwave Transistors - Theory, Design and Performance Frank Schwierz and Juin J. Liou Wiley Interscience 486 pages; $89.95 ISBN: 0-471-41778-5 Microwave transistors are the backbone of modern microwave systems. In recent years they have undergone an impressive evolution, where continuous research efforts have made transistors faster and more...

The fast fourier transform (FFT) approach to the method of moments (MoM) is well known for providing high accuracy, high dynamic range and robust electromagnetic (EM) analysis of planar circuits. The FFT consistently calculates the coupling between subsections to full numerical precision; no error is introduced by complex multi-dimensional...

In the telecoms and other RF component markets, today's climate means that there can no longer be a trade-off between cost and performance - the designer needs to achieve both. Temex has recognized this fact and addressed it through the evolution of two new generations of materials on which...

This is the best time to be a consumer of electronic products. Wireless mobile devices, especially cellular handsets, have more features, are smaller and have better battery life than ever before. The cellular handset manufacturing industry is continuously challenged to deliver high performance, cost-effective, small form function products to...

The basic principle of operation of a MESFET multiplier is that the device is biased for a particular conduction angle, based on the harmonic frequency to be generated. A generalized circuit schematic of a MESFET frequency multiplier is shown in Figure 1 . It can be seen that the...

One of the greatest challenges in characterizing new coaxial interfaces is to determine an accurate test configuration. When precision airlines are not available it is very difficult to obtain a true measurement of the device under test. It becomes necessary to design and implement calibration standards to eliminate the...

Realities of 3G launches are far from what operators anticipated just a few years ago, when they committed billions of dollars in 3G fees, adhering to stringent regulatory terms and conditions. According to Allied Business Intelligence (ABI), the number of 3G network launches will peak in 2004, but developed...

High frequency, voltage-controlled oscillators (VCO) are important components of modern RF systems. They are characterized by a set of parameters, which must be analyzed and optimized (for example, phase noise, frequency tuning range, tuning linearity and output power). Many studies are dedicated to the research of VCO characteristics. 1-8...

From the time a Department of Defense (DoD) program lands on the classified "secret" document known as the Master Urgency List (MUL), most orders placed to complete that program will have a priority rating. Most contractors and subcontractors who deal with these orders must therefore have a working understanding...

When the RF test system and the device-under-test (DUT) both have coaxial connectors, hooking them together to make a measurement is easy. However, as radio-frequency integrated circuits (RFIC) have shrunk in size, traditional coaxial connectors are no longer useful. With the multitude of RF component sizes and shapes found...