RF & Microwave Industry News

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Coplanar waveguides are widely used in MMICs as interconnects and matching networks. Designing low loss, multifunctional and highly integrable transmission lines is a key factor in obtaining high performance from MMICs in silicon technology. 1 Nevertheless, the low resistivity of a standard silicon substrate deteriorates the performance of on-chip...

The investigation of the use of ultra-wideband (UWB) has been one of the most controversial technologies of modern times. Its applications can be seen in diverse areas such as local area networks, position location searching, advanced imaging of the human body, etc. Microwave ring resonators are the components proposed...

Integration of RF power, RF small signal, digital, DC and supervision circuits is still one of the main goals of modern radar, satellite and wireless communications technology. Today’s solutions of close-to-antenna devices use a stack approach for integration of RF filters with power splitters/combiners and multilayer printed circuit boards...

Thermal resistance is a measure of the amount by which the junction temperature rises for a given level of power dissipation in a transistor Thermal resistance is important since it determines how much power a device and package combination can safely dissipate. Thermal resistance measurements normally require the measurement...

Wireless systems-on-a-chip (SoC) have seen very high levels of integration in the last few years because the market is demanding reduced cost and low component count. Further to this trend, the integration of multiple standards has been introduced into the SoC. This integration strategy has caused superheterodyne receiver architectures...

Part I of this tutorial article 1 gave a detailed discussion and analysis of the start-up and steady-state oscillation conditions for transistor LC oscillators with emphasis on CMOS devices. Part II presents both linear and nonlinear phase noise models for the parallel feedback and negative resistance oscillators. Each approach...

Harris Corp. announced it has successfully completed multiple field demonstrations of a satellite antenna feed prototype that is capable of supporting selectable antenna polarization for orthogonal transmit and receive operations. The feed prototype achieved user data rates reaching an astounding 105 Mbps — more than 12 times the current...

Northrop Grumman, working closely with Raytheon Co., has reached three milestones in a program to modernize the B-2 stealth bomber’s radar system with an advanced, more reliable antenna. These achievements represent significant progress towards initial flight testing of the radar. Recently, the B-2 radar-modernization team passed a final design...

Raytheon Co. is helping transform US war fighting capabilities by delivering a short-range millimeter-wave directed energy non-lethal weapon to the Department of Defense’s Full Spectrum Effects Platform (FSEP) program — also known as Project Sheriff — for the Office of Force Transformation (OFT). OFT, in partnership with the US...

In order to serve the fast growing needs of the Indian market for broadband connectivity, Alcatel and the Centre for the Development of Telematics (C-DOT), the Indian Government’s telecom technology development centre, have announced a joint venture to design and develop products related to broadband wireless. In fact, the...