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Industry News

Technology Does Not Matter!

These are the words that can label you as a non-believer and a heretic. For the telecom industry, thoughts like this must be exterminated before they spread like a virus. Yet, recently an example of how little technology matters surfaced. Deutsche Telekom (DT) killed its Fixed-Mobile Convergence (FMC) service....
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Industry News

• Laird Technologies , a designer and manufacturer of antenna solutions, electromagnetic interference (EMI) shielding products, telematics, signal integrity products and thermal management solutions, announced the acquisition of AeroComm for $38 M. • Spectrum Control Inc. , a designer and manufacturer of electronic control products and systems, announced that...
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An Enhanced Doherty Amplifier Design Based on the Derivative Superposition Method

An enhanced 20 W Doherty amplifier with highly optimized linearity using the derivative superposition method (DSM) is proposed. DSM is a linearization technique based on the device’s transconductance characteristics. The gain compression...
High linearity and high efficiency are important design issues in a high power amplifier for base station applications in modern wireless communications. High efficiency power amplifiers, combined with high linearity, have been very desirable. The Doherty amplifier is a technique for improving the efficiency at high output power back-off....
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Designing Modules for Concurrency in Multimedia Co-design

Module designs, and specifically handset power amplifier (PA) and front-end module (FEM) designs, are at a crossroads. Traditionally, the module has been an integration platform for discrete functional blocks enabled by considerable design margin, reasonable size and power constraints, and the luxury of predicted performance from cascaded analysis. Although...
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An Ultra-low Noise VHF OCXO

Over the past 50 years crystal oscillators have become ubiquitous wherever a stable reference is needed in RF systems. The new Pascall OCXO has been developed to address the most critical applications where ultra-low noise is required; for example, as a reference for phase noise measurement, or as the...
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A High Speed Family of Commercial Track-and-Hold Devices for

A new class of very high input analog bandwidth and high sampling rate track-and-hold amplifiers (THA) has been developed for test and measurement, automatic test equipment (ATE), digital receivers and radar systems using a commercially available indium phosphide (InP) technology. Inphi® Corp.’s GigaTrack™ family of 2 GS/s track-and-hold amplifiers...
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Design of Three-line Multi-layer Microstrip Directional Couplers at HF for High Power Applications

A practical method for designing three-line microstrip directional couplers at high frequency (HF) for high power applications is given for the first time using multi-layer dielectrics. The forward-coupling slope characteristic of the directional coupl...
It is common practice to use directional couplers in the HF range (3 to 30 MHz) for high power RF/microwave applications, such as magnetic resonance imaging (MRI), plasma generation for semiconductor processing equipment and laser drivers, in order to measure the transmitted and reflected powers accurately. Microstrip-type directional couplers...
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