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November 2008 Don’t Rely Too Much On That CAE Software Personal computers, and the software within them, have changed the world. Much can be said about the “wireless revolution,” and the tremendous convenience of being able to reach anyone with a cellular telephone. But in the last several decades, it has been the PC that has had the greatest impact of any electronic device on most lives. It is the operating system and application software that defines the functionality of the PC. And in this industry,... — Jack Browne November 2008 Software Simulators Speed Design Cycle Time-to-market pressures force designers to search for an edge. For many, that edge comes in the form of computer-aidedengineering (CAE) simulation tools. Such software is available to simulate devices as well as system components. It can perform both linear and nonlinear circuit and system simulations. In addition, a host of software companies offer platforms for time-domain and electromagnetic (EM) simulation. To keep up with design advances and... — Nancy Friedrich November 2008 Perform Fast Optimization Of Tapered WG Transformers Waveguide tapers are often necessary when making a transition between two different types of waveguide transmission lines, such as singleridge waveguide and double-ridge waveguide. While three-dimensional electromagnetic (EM) analysis programs can help achieve good performance for such waveguide tapers, they also depend on a fairly close starting point in terms of the geometric dimensions for the transition. Fortunately, the author has developed a... — Zelman Harbater September 2008 FETD Simulation Depicts In-Building Radar By simulating the radar pulses directed at buildings, engineers can better understand complex scattering mechanisms. They also can provide benchmark data for evaluating imaging algorithms. Previous work on wall-imaging algorithms has been rooted in techniques like synthetic-aperture-radar (SAR) imaging, time reversal, the boundary scattering transform, and beamforming with nonlinear inverse scattering algorithms. More recently, large-scale,... — Jack Browne August 2008 New EDA Software Versions Boast Broad Enhancements Electronic-design-automation (EDA) software tools have become the voltmeter and the slide rule to the modern high-frequency engineer. But unlike those two hardware tools, software can be updated for improved performance, as is the case in recent releases from Applied Wave Research [AWR] for Version 2008 of the firm’s widely used Microwave Office design environment and Version 2008 of the Visual System Simulator (VSS) software tools. Both new software ... — Jack Browne May 2008 Software Speeds Development Of Mixed-Technology PCBs A JOINTLY DEVELOPED solution is promising to significantly improve productivity for the design of RF circuits on printed circuit boards (PCBs). This integrated solution enables PCB mixedsignal designers (RF, analog, and digital) to concurrently design a PCB using Mentor Graphics’ Expedition Enterprise or Board Station XE flows. At the same time, the design is integrated with Agilent’s Advanced Design System (ADS) electronic-design-automation (EDA) software... — Nancy Friedrich April 2008 EM Simulator Models Acoustic/Electric Designs Simulating a high-frequency device before it is built can help avoid pitfalls in its design and manufacturing. Fortunately, engineers faced with predicting the behavior of RF and microwave circuits have a wide array of electromagnetic (EM) solvers to choose from, although selecting an optimum simulation tool should require consideration of some practical guidelines. There are several classes of solvers, with each best suited to a... — Marco Farina April 2008 Large-Signal Approach Yields Low-Noise VHF/UHF Oscillators Oscillator design for veryhigh- frequency (VHF) and ultra-high-frequency (UHF) applications has been well documented in books and journals. Most early work focused on frequency stability and, to a lesser extent, on efficiency and output signal quality. But with increasing use of advanced modulation formats in communications systems, and the growing need for oscillators with... — Ulrich L. Rohde , et al. April 2008 Advanced Simulators Focus On EM Fields Electromagnetic (EM) simulation software is no longer a luxury but now an essential tool in any practical highfrequency design effort. The number of commercial programs has grown steadily over the years, providing RF/microwave designers with an unprecedented number of choices in EM simulators, including software for analysis of planar designs as well as full three-dimensional structures. Most of these EM tools link seamlessly to other... — Jack Browne March Analyze EM Parameters Of Slotted Tube Couplers This numerical method accounts for thickness effects in determining the coupling coefficient as well as the even-and odd-mode impedances for slotted tube couplers. Abdelhafid Lallam Assistant Professor of Physics University of Mascara, BP 305 Route de Mamounia 29000 Mascara, Algeria; (045) 80-41-68/69, FAX: (045) 80-41-64, e-mail: ab_lallam@yahoo.fr Nadia Benabdallah Physics Engineer ... — Yamina Bekri , et al. February CAE Firm Celebrates 20th Anniversary MARLBOROUGH, MA—This year, Flomerics (www.flomerics.com) celebrates its 20th anniversary as an independent company. According to the company’s founder, Dr. David Tatchell, this landmark is a testimony to the company’s high-integrity, people-oriented culture and its core concept of delivering engineering simulation software for use by designers and engineers rather than just full-time analysts and specialists. Flomerics ... — Nancy Friedrich January 2008 CST Acquires Flomerics' EM Business Line For software vendors, acquisitions usually offer a chance to enter new market areas and an immediate way to provide new services and products for customers. Through its acquisition of Flomerics’ (www.flomerics.com) electromagnetic (EM) simulation software business, for example, Computer Simulation Technology or CST (www.cst.com) gains considerable EM simulation capability while adding... — Nancy Friedrich December 2007 Software Tool Brings EM Technology To Forefront Jack Browne Technical Director Electromagnetic (EM) simulation software has evolved from a laboratory curiosity to a valuable modeling tool during the last decade. But many users still consider the technology as a "back-end" design tool, often applied as a way to check the results on "more trusted" S-parameter-based circuit simulators. To change that way of thinking, Applied Wave Research ... — Jack Browne December 2007 Simulating WiMAX System Performance Rapid growth of Wireless Interoperability Microwave Access (WiMAX) as a broadband wireless technology is expected due to increasing demand for convenient Internet access and highspeed data access. In order to construct wideband wireless systems such as WiMAX, however, effective modeling must be performed. In this report, wideband modeling was performed on key elements of a WiMAX system, notably the modulator, frequency upconverter, and... — Kostas Stefanou , et al. December 7, 2007 December 7, 2007 Newsletter Remembering A Master Of Time-Domain Measurements, Ethertronics' Antennas Cut Driving Risks, Readying For Wi-Fi Growth In Handsets, Agilent Unveils LTE Test Solution, Picosecond Pulse Labs Launches Pickoff Tee, Ansoft's CFO Miller Announces Retirement, Idaho Turns To Iridium For Communications — Jack Browne December 6, 2007 Ansoft's CFO Miller Announces Retirement — Jack Browne October 29, 2007 October 29, 2007 Newsletter Renewed Interest In Military Electronics, Plastic Optical Fiber Sends 40 Gb/s, Synergy Launches Optimized-Bandwidth VCOs, NoiseWave Announces Coax Noise Source, Barry Industries Partners With Modelithics, Satellites Link Firefighters In Western Australia, B & H Electronics Adds Low-Drift Amps — Jack Browne October 25, 2007 Barry Industries Partners With Modelithics — Jack Browne October 12, 2007 October 11, 2007 Newsletter Unleashing Microwaves In Munich, Avago Announces UMTS Duplexers In Munich, Mimix Broadband Unveils MMIC Amp In Munich, Agilent's $13 Million Fuels GED, Alereon UWB Platform Certified by WiMedia Alliance, AWR Adds NXP Large-Signal LDMOS Models, Report Sees Growth Of Dynamic Spectrum Access — Jack Browne October 9, 2007 Agilent's $13 Million Fuels GEDC — Jack Browne  prev. page
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