Computer-Aided Engineering
 110 results found for Computer-Aided Engineering, displaying items 1 - 20

February 2010
Shooting Bouncing Ray Method Is At Solver’s Roots
DARMSTADT, GERMANY—CST Microwave Studio (CST MWS) now incorporates an asymptotic solver that is based on the Shooting Bouncing Ray method—an extension to physical optics. The integration of CST Microstripes into the CST Studio Suite should facilitate access to features that are particularly valuable in EMC simulations, such as compact models and Octree meshing, within the design environment. The software is capable of tackling simulations covering thousands of...  — Paul Whytock

January 2010
An Interview With Jim McGillivary
NF: Software—especially EDA software—is increasingly playing a bigger role in test and measurement. How do you see that trend growing? JM: There’s currently a disaggregation of the design process as manufacturers focus on being a system integrator and trying to build software ecosystems. For example, handset designers have sockets and they want vendors to compete for those sockets. They need a...  — Nancy Friedrich

January 2010
Upgraded CAE Software Simulates RFIC Designs
Low-cost wireless products rely on the timely design and cost-effective production of radio-frequency integrated circuits (RFICs). To help that cause, Agilent Technologies has released version 4.4 of its GoldenGate RFIC simulation, verification, and analysis software with new capabilities in RF mixed-signal simulation. This latest version of the computer-aided-engineering (CAE) software supports...  — Jack Browne

November 2009
Microwave Software Covers More Of The Design Flow
High-frequency designs once were created with the help of many different computer-aided-design (CAD) tools—many lacking interfaces between them. Over the past decade, however, it has become possible for a microwave designer to step through design, layout, fabrication, and more as part of a continuous design flow. If that flow lacks any specialty, such as three-dimensional (3D) electromagnetic (EM) simulation, it generally will offer an easy interface ...  — Nancy Friedrich

November 2009
Simulating RF Tuned Stages
Assessing post-production- tuning (PPT) elements should be part of any RF worstcase circuit analysis (WCCA). Unfortunately, PPT elements are often omitted or incorrectly incorporated into an analysis, even though including such tuning elements into a computer-aidedengineering (CAE) model is often a simple task. Correctly accounting for PPT elements depends on the ability to define the PPT procedure and to mathematically define the relationships ...  — Steven M. Sandler

November 2009
Analyze BER Performance Of Wireless FSK Systems
Modern communication systems employ digital modulation for a variety of reasons, including improved immunity to noise and channel impairments as well as enhanced security compared to analog modulation. In addition, advances in very large-scale integration (VLSI) and digital signal processing (DSP) technology have made digital modulation more cost effective than analog transmission systems. Digital transmissions accommodate digital error-control...  — Hamood Shehab Hamid , et al.

October 2009
Analyzing WiMAX Modulation Quality
Advanced wireless communications standards rely on complex modulation schemes to achieve high bandwidth efficiency. WiMAX, for example, employs the orthogonal frequency division multiplexing (OFDM) technique.1 Due to many challenges with such complex modulation formats, sophisticated simulation and verification tools and approaches are required to achieve optimum system-level performance. For example, the transmit modulation accuracy depends...  — Bill Wu

October 2009
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 2009 of the firm’s widely used Microwave Office design environment and Version 2009 of the Visual System Simulator (VSS) software tools. Both new software versions ...  — Jack Browne

October 2009
Software Uses High-Performance Computing To Tackle EM Problems
IN ITS NEWEST iteration, an engineering simulation software vows to help engineers solve complex electromagnetic (EM) field problems quickly, accurately, and efficiently. HFSS 12.0 includes domain decomposition, a highperformance- computing (HPC) enhancement that allows engineers to address problems containing hundreds of millions of unknowns. This new technology allows efficient and highly scalable parallelized simulations across multiple...  — Nancy Friedrich

May 2009
Passive Simulation Models Gain Accuracy and Scalability
 — Ashok Bindra

July 2009
Technology Integration Simplifies PCB/Cable-Harness Simulation
 — The Editors of Microwaves & RF

August 2009
Load-Pull System Aids Nonlinear Device Modeling
Transistor amplifier linearity is essential to many wireless systems. Unfortunately, linearity often comes at the expense of efficiency. However, a load-pull system from Focus Microwaves when combined with nonlinear X-parameter measurements can help achieve the best compromise between linearity and efficiency for a given bias class of power amplifier. A traditional load-pull...  — Jack Browne

July 2009
Targeting EM Simulators Study Field Patterns
Increased reliance on electromagnetic (EM) simulation by high-frequency circuit designers was apparent by the number of EM simulator booths at the recent MTT-S Exhibition in Boston, MA. With the Sonnet Software (www.sonnetusa. com) booth visible from the entranceway, and through the scattered collection of EM simulation booths on the show flow, from dedicated shops like Zeland Software to full-service suppliers like ...  — Jack Browne

May 2009
Hit Minimum SAR With EM Software
Electromagnetic (EM) energy and human health issues have long been a concern with the growing use of portable wireless devices. Because of this, many countries now require compliance with specific absorption rate (SAR) specifications for EM radiation. Fortunately, by using SAR simulation software, designers can estimate SAR performance at the initial stages of product concept and development, saving countless design iterations (and cost) in order to comply...  — Weidong Hao , et al.

May 2009
Laser-Based System Creates Fast Prototypes
Circuit design and prototyping can be a tedious series of steps, developing layout files, sending them to a fabrication house, and waiting for the return of printed-circuit boards (PCBs) for evaluation. There is a way to eliminate the delays, by using the ProtoLaser S system from LPKF Laser & Electronics for in-house fabrication of PCBs from standard layout files. Prototyping systems can bring...  — Jack Browne

April 2009
EM And Math Software Aids RF/Microwave Design
Software plays an increasingly important role in high-frequency design, especially as more functions are integrated into smaller circuits. Design engineers have a wide choice of computer-aided- engineering (CAE) software tools at their disposal, from full-featured, multi-program suites to single-function utilities. Two of the more versatile types of tools, mathematical and electromagnetic (EM) programs, help analyze a wide range of designs, from...  — Jack Browne

March 2009
Simulator Characterizes Cable Signal Propagation
 — The Editors of Microwaves & RF

March 2009
Propagation Simulator Models Airborne Coms
Communications links operating in airborne and aerospace environments must overcome the stress of high velocity and acceleration in addition to the usual challenges of interference and fading. Fortunately, the EB Propsim C8 propagation simulator from Elektrobit Corp., when equipped with the firm’s ASO tool, can create the complex signal conditions needed to emulate communications channels in...  — Jack Browne

February 2009
Tracking Advances In High-Power GaN HEMTs
Improvements in solid-state power amplifiers depend on advances in transistors. Fortunately, evolving gallium nitride (GaN) high-electron-mobility-transistor (HEMT) technology is bringing many benefits to high-frequency amplifier designers. A key advantage of GaN HEMT devices over other transistor technologies is the high power density possible from relatively small transistor cells. For example, HEMT devices from Cree are capable...  — Don Farrell , et al.

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





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