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Design of a Wideband, High Dynamic Range Downconverter Used in Smart Antenna Applications This article details the design of a wideband, high dynamic range downconverter from concept through production. The downconverter is a part of the Smart Adaptive Appliqué (SAA) used in cellular base stations to increase channel utilization...

Effects of Matching on RF Power Amplifier Efficiency and Output Power To date, one of the most important design methods for RF power amplifiers (PA) still consists of matching the large-signal input and load impedances of an active device. These large-signal impedances are supplied by the manufacturer of the...

News From Washington LLLC Receives Two Major Awards Longbow Limited Liability Company (LLLC), a Lockheed Martin/Northrop Grumman joint venture, has received two major awards from the US Army for elements of the Longbow Apache system. The first contract from the Army's Aviation and Missile Command calls for full-rate production...

International Report DE and Sextant Named RWR Supplier for Northrop Grumman Upgrade Package French electronics contractor Dassault Electronique (DE) has announced that its EWS-A radar-warning receiver (RWR) has been selected for use in Northrop Grumman's F-5 combat aircraft upgrade package. DE is teaming with fellow French contractor Sextant Avionique...

Commercial Market New FCC Filings Outline Expanded SPACEWAY System Hughes Communications Inc. has filed two new applications with the Federal Communications Commission (FCC) to enhance its SPACEWAY™ global broadband communications system by increasing overall system capacity and adding higher data rate transport services. The SPACEWAY EXP™ filing proposes high...

The Book End Open Electromagnetic Waveguides T. Rozzi and M. Mongiardo The Institute of Electrical Engineers 387 pages; $95 The dual properties of waveguide transmission and radiation in open structures are the principle features addressed in this book. Guided-wave electromagnetism and the effects of discontinuities in open, hybrid-mode, three-dimensional...

A PC-based High Frequency Electromagnetic Structure Simulator Infolytica Corp. Montreal, Quebec, Canada Three-dimensional (3-D) electromagnetic simulations of high frequency structures have been both time consuming and costly, running lengthy calculations on sophisticated workstations using expensive software. A new, inexpensive software package now allows the operator to simulate and optimize...

Spectrum Analyzers for High Frequency Point-to-point and Point-to-multipoint Networks Anrtisu Co. Richardson, TX The world of microwave radio continues to add exciting opportunities to the telecommunications market. With the advent of digital microwave technology, manufacturers now are providing point-to-multipoint systems that offer digital voice and data distribution for private...

A GPS Frequency and Time Standard Quartzlock UK Ltd. Totnes, Devon, UK The Global Positioning System (GPS) is used widely to determine location. If at least four of the system's satellites are in view (typically six or seven are in view at one time), position can be determined in...

System Design, Simulation and Analysis Software Elanix Inc. Westlake Village, CA A new comprehensive PC-based software package has been developed specifically to support all aspects of system design. SystemView" is a complete visual design environment for dynamic system design, simulation and analysis. The software suite operates under Windows® with...