RF & Microwave Industry News

SELEX GALILEO Opens EWOS Facility in UK

SELEX GALILEO has opened its new Electronic Warfare Operational Support (EWOS) facility in Lincoln, UK, dedicated to the delivery of EWOS capability and products. Located at Alpha Court, on the western outskirts of Lincoln, the 1100 m 2 facility, which includes a 200 m 2 Radio Frequency screened laboratory,...
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NEC Laboratories Europe Celebrates 10th Anniversary

NEC Laboratories Europe , the European R&D centre for network technologies, was established as Network Laboratories in Heidelberg, Germany, in April 1998 and celebrated the landmark by holding a 10th Anniversary Symposium for around 50 invited representatives in various fields from universities and companies in Europe. NEC Laboratories Europe...
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Globacom Signs Nigerian Expansion Contract

Alcatel-Lucent has signed a contract with Globacom , Nigeria’s second largest national operator, to extend the network capacity and performance of its mobile and fixed networks. The project, which is part of the operator’s IP network transformation, will enable it to extend the delivery of advanced mobile and triple...
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DMU Awarded Satellite Navigation Research

A pioneering navigation device which can tune into different satellite networks around the world is being developed by researchers at De Montfort University (DMU) Leicester, UK, in partnership with Nottingham Scientific Ltd. (NSL). NSL specializes in the commercial exploitation of Global Navigation Satellite Systems (GNSS) technology. Satellite navigation receivers...
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An Improved BSIM4 Model for 0.13 μm RF CMOS Using a Simple Lossy Substrate Extraction Method

An improved BSIM4 large-signal model for a 0.13 μm RF CMOS transistor with lossy substrate description is presented in this article. To accurately accomplish the CMOS model for microwave circuit designs, the RLC networks representing the parasitic...
In order to improve the simulation accuracy of microwave circuit designs, an accurate active device model plays an important role for circuit simulations. According to previous studies, the BSIM models can precisely predict the characteristics of deep sub-micron MOSFETs at operation frequencies below 1 GHz for digital and analog...
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Software-defined Radio Transmitters for Advanced Wireless and Satellite Communications Systems

This article reviews and discusses the critical issues in designing software-defined radio (SDR)-based transmitters for wireless and satellite applications. Digital predistortion-based linearization techniques as an enabling technology for SDR transmit...
The wireless and satellite communications communities have always been looking for power efficient radios. However, the power efficiency is greatly dominated by the efficiency of the RF power amplifier (PA) in the transmitting path. Recently, most of the communication systems being deployed or to be deployed in the near...
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Analysis and Design of a Compact Multi-band Antenna for Wireless Communications Applications

A compact multi-band and single-feed microstrip antenna is proposed for wireless communications applications at 0.9, 1.8, 1.9 and 2.4 GHz. The antenna in this article consists of a microstrip feedline, a two-step power coupler, a rectangular loop and a...
Personal wireless communications have recently gained wide popularity. Presently, the trend is to provide a wireless link to every kind of electronic device. In particular, there is a specific need for greater capacities and transmission speeds, which, together with a growing demand from users for more complicated services, require...
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Harmonic Load Pull with High Gamma Tuners

Automated load pull has become a standard tool for characterizing microwave power devices. Power devices operate in a nonlinear mode in order to achieve reasonable efficiency, so testing must be done with actual drive power and impedance matching. This...
Microwave power devices, widely used in modern wireless and communications systems, must operate in a nonlinear mode in order to operate efficiently. Nonlinear operation means that the only valid way to test them is under actual operating conditions of DC bias, RF power and impedance. Small-signal S-parameters are not...
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