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Industry News

Design of a 3.5 W S-band Power Amplifier Based on Small-signal S-parameter Analysis

Large-signal device S-parameters are usually used in power amplifier (PA) designs to obtain the desired output power. The large-signal characteristics of a power transistor can be accurately extracted from load-pull measurements as described in the lit...
In the design of high frequency power amplifiers, the goal is to achieve the power gain and output power at the desired frequency in order to achieve high PAE. Large-signal S-parameters of power devices are normally not provided by the manufacturer. One of the methods to characterize the device...
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A Novel Power Combining Network for Doherty Amplifiers

This article proposes a new type of power combining network for a Doherty amplifier based on the use of short transmission lines and lumped capacitors. Compared with the conventional combining network, which consists of λ/4 transmission lines, thi...
Modern mobile communication systems use band-limited linear modulation schemes, such as multi-level quadrature amplitude modulation (QAM) and quadrature phase shift keying (QPSK), which have high peak-to-average power ratio characteristics. For these systems, linear power amplifiers are needed to prevent adjacent channel interference. A power amplifier operated sufficiently below the...
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New Products

Bonding Films The CuClad 6250 and 6700 are low melting point bonding films that have been developed for lamination of stripline or other multilayer circuits fabricated from CuClad or other company PTFE-based laminates. Dielectric constants of 6250 and 6700 bonding films fall in the midrange of CuClad® and DiClad®...
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Around the Circuit

Industry News Tore N. Anderson Tore N. Anderson died suddenly on April 14, 2004. He was 83 years old. He was one of the pioneers of the microwave industry and was widely recognized for his work in waveguide structures and antennas. He held a number of patents in the...
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Catalog Update

Waveguide, Coaxial and Dual Switches This product catalog features the company’s waveguide, coaxial and dual switches. The catalog details several microwave switches and provides an outline drawing, electrical specifications, mechanical specifications and environmental specifications of each. The catalog highlights the most common devices. Other configurations are available upon request....
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Lockheed Martin Wins Joint Common Missile Program

Lockheed Martin has been selected to develop the Joint Common Missile (JCM) system, the next generation air-to-ground missile that will be carried on the US Armed Forces rotary- and fixed-wing platforms. The contract is worth approximately $5 B over the life of the program. Lockheed Martin received an initial...
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Remec Announces TOW Missile Production Upgrade Contract

Remec Inc. announced it has received an initial $8.9 M production contract from Raytheon Missile Systems for the Tube-launched, Optically-tracked, Wire-guided (TOW) missile second-generation upgrade program. This contract is a result of Raytheon’s recent demonstrated success to prove feasibility to add expanded capability to the TOW weapon system. With...
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Northrop Grumman to Upgrade Air Force Weather Radar System

Northrop Grumman Corp. will integrate a new, more capable weather radar system on US Air Force E-8C Joint Surveillance Target Attack Radar System (Joint STARS) aircraft under a recent award from the Air Force’s Electronic Systems Center. The new radar will give pilots more accurate information about weather conditions...
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Lockheed Martin Completes Milestone on Military Communication Program

Lockheed Martin announced that it has successfully completed on-schedule the critical design review phase of the Advanced Extremely High Frequency (AEHF) program and is beginning production of the next generation military communications satellite system. AEHF is the successor to the Milstar system and will provide global, highly secure, protected,...
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Microwave Atmospheric Plasma Technology is Deployed

Dana Corp. (DCN) is deploying what it claims to be a ‘revolutionary’, proprietary technology that harnesses highly efficient microwave energy to accomplish dozens of processes, including the heat treating and coating of metal and ceramic parts. The company’s Microwave Plasma Technology operates at atmospheric pressure. This is significant, as...
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