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Industry News

A CAD Algorithm for RF/Microwave Interconnect Modeling

This article presents a numerical technique (CAD) to model and analyse interconnects encountered in the design of high speed/high frequency analog RF/microwave circuits with mixed, lumped and distributed elements to be implemented on-chip. In this meth...
Because of the rapid growth in density and complexity of modern integrated circuit interconnects, modeling has been a requirement in circuit design and simulations. On-chip interconnects have achieved a dominant role, especially in determining the performance of RF and monolitic microwave integrated circuits (MMIC). In the last two decades,...
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A CAD-oriented Approach to Design of Load Impedance and Input Matching in Active Transmitting Antennas

This article discusses a general computer-aided design (CAD) approach to obtain the optimal fundamental load impedance and design the input matching circuits for an active integrated antenna of the transmitting type. A case study of a design for 1.6 GH...
An active integrated antenna (AIA) may be defined as a system in which an active device, usually a transistor, is closely integrated within an antenna, using a minimum of intervening circuitry. In recent years, AIAs have been considered a useful approach for improving performance and reducing size in front-end...
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De-embedding Using a Vector Network Analyzer Including Calibration and Measurement Techniques

The inclusion of adapters and test fixtures in a measurement setup is often necessary even if the consequence is less accuracy. De-embedding the device characteristics has been traditionally the most effective method of minimizing the negative effects. However, the process of de-embedding has been a laborious, expensive procedure restricted...
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The Importance of Sweep Rate in DC IV Measurements

The importance of taking due care in setting up IV measurement sweep rate is explored for the case of a GaAs MESFET and a silicon MOSFET. A numerical metric, called the normalized difference unit (NDU), is shown to be useful in determining appropriate ...
The DC IV characterization of a device is important in predicting RF operation. DC IV results predict the quiescent bias and low frequency IV characteristics for a device, while in some cases they can be corrected to represent RF characteristics at a given quiescent bias point. 1,2 In addition,...
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Transient Simulations at RF Frequencies

Harmonic balance simulation is a fast and effective means for accurately predicting the steady-state performance of RF, microwave and millimeter-wave circuits. Transient simulation is also important for predicting the time-domain behavior of many of these circuits, especially when they include oscillators, frequency dividers and mixed-signal functions. Several SPICE-based circuit...
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US Air Force Research Laboratory Exercises Option for X-band Thin Radar Aperture

Raytheon Co.’s option to proceed with its X-band thin radar aperture (XTRA) contract has been exercised, allowing the company to produce the next generation radar antenna technology for the J-UCAS (Joint Unmanned Air Combat System) that could revolutionize manned and unmanned combat systems. The AFRL (Air Force Research Laboratory)...
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Northrop Grumman Readies Commercial Aircraft Anti-missile System

Northrop Grumman Corp. announced it will install and flight test its commercial aircraft protection system on a Boeing 747 and MD-11 this year. The system, called Guardian, represents the successful transfer of proven military directional infrared countermeasures (DIRCM) technology to protect commercial aircraft from attack by ground-based, shoulder-fired missiles....
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Filtronic and RFMD Broker Strategic Supplier Relationship

Filtronic plc, a global designer and manufacturer of customised microwave electronic subsystems and components for the wireless telecommunications and defence industries, and RF Micro Devices Inc. (RFMD), have signed a supply agreement for the manufacture of high volume pHEMT GaAs products on the Filtronic 6 inch processing facility based...
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