News

 390 results found for News, displaying items 1 - 20

August 2010   [Components]
Shrinking Sources Aim For Lower Noise
esigners of oscillators and synthesizers need creative ways to achieve low phase noise in smaller packages in order to serve shrinking systems. To accomplish this, some manufacturers are using advanced materials and circuit techniques, as well as the latest software design tools, which can allow for extremely accurate simulations and speed time to market. Once a prototype is in hand, designers need to leverage the most robust methods and...  — Janine Love

August 2010   [People]
Microwave Legends
To those outside this industry, microwave engineers and dealmakers probably seem to be involved in some kind of dark art. They use terms and acronyms not widely understood. In addition, they not only understand electronic systems that few can comprehend, but can also imagine ways to improve them. It is this vision that marks all of the hall of famers inducted into the “Microwave Legends” over the last four years. It also is a characteristic of the...  — Nancy Friedrich

July 2010   [Communications]
Raise Awareness Of Satellite Interference
 — Robert Ames

July 2010   [Communications]
Satellite Markets Enjoy An Uptick
The term “satellite” conjures many images ranging from television service to cutting-edge military applications like the “mystery” satellites that provide surveillance over troubled areas. With so many automobile drivers equipped with Global Positioning Satellite (GPS) systems, however, satellite applications have become rather commonplace. Yet that does not mean they have lost their innovative edge. Emerging needs continue to open new markets and ...  — Nancy Friedrich

July 2010   [Components]
Channeling Power In MW Components
Handling large amounts of RF/microwave power is part science, part imagination. The science exists in the form of thermal flow equations and thermalmechanical design software programs to calculate temperature rises in a wide range of electronic materials based on input power levels, dissipative and radiative losses, and thermal conductivity, among other parameters. The imagination helps to visualize the thermal flow through a system and,...  — Jack Browne

June/July 2010 Defense Electronics Supplement   [Defense Electronics]
Lasers Mark Half Century
Fifty years ago, American physicist  Theodore Maiman, then working at Hughes Aircra Co., invented the  first laser based on ruby lasing medium.  The principle was  first described by Albert Einstein in 1917, but it wasn’t realized until 1960 when Maiman stimulated a ruby rod by means of high-energy  flashes of light. Today, Hughes is part of Raytheon Company, but the work on lasers continues, with...  — Jack Browne

June/July 2010 Defense Electronics Supplement   [Defense Electronics]
CERDEC Demonstration Shows Networking Prowess
Advanced networking technologies are critical to present and future military requirements. To show progress of two of its key network technologies, the Communications- Electronics Research, Development and Engineering Center (CERDEC), part of the US Army’s Research, Development, and Engineering Command (RDECOM), held a demonstration of its Virtual Ad hoc Network (VAN) and Tactical Information Technologies for Assured Network (TITAN) Operations ...  — Jack Browne

June 2010   [Components]
Amplifiers Cultivate Greener Base Stations
"GREEN"basestationswould have been considered a camouflage technique a decade ago. With the “greening” of engineering and the desire to conserve energy to lower costs, however, base-station designers are seeking more integrated, power-efficient, and smaller components. At the same time, mobile data traffic is predicted to double every year for the next few years. Capacity must therefore rise as power consumption decreases. Amplifiers are being...  — Nancy Friedrich

June 2010   [Defense Electronics]
RF Signals Serve Homeland Security
National defense has taken on new meaning in a terrorist- filled world. The United States Department of Homeland Security (DHS), tasked with that defense, must be alert to a wide range of threats, from biological to vehicular. RF and microwave technologies play a major part in their efforts, representing tools as well as threats. In the hands of terrorists, even the most seemingly benign RF device, such...  — Jack Browne

May 2010   [Conferences]
IMS 2010 Returns To The West Coast
The IEEE Microwaves Theory & Techniques Society (MTTS) International Microwave Symposium is the RF and microwave industry’s key technical, business, and social event. This year, IMS is being held from May 23 to 28 at the Anaheim Convention Center (Anaheim, CA). As usual, it includes a variety of conferences with outstanding technical presentations (...  — Nancy Friedrich

April 2010   [Communications]
Digital Techniques Hold Key To 4G Infrastructure
Right now, many families rely on wirelesslocal- area-networking (WLAN) access points to provide Internet capabilities for multiple computers inside their homes. In the near future, however, such devices will be replaced by cellular femtocells. These smaller base stations are expected to be widely used in homes and small businesses to provide access to fourth-generation (4G) communications services. To enable these higherdata- rate capabilities,...  — Nancy Friedrich

April 2010   [Crosstalk]
An Interview With Joseph G. Thomas, Jr.
NF: After being part of larger corporations for a long time, M/A-COM Technology Solutions is now privately held, correct? JT: That’s correct. We are now a private standalone company with our sole focus on the RF, microwave, and millimeter-wave space. Our owner, John Ocampo, is a private investor. But more importantly for us, John has been a very successful entrepreneur in this industry for his...  — Nancy Friedrich

March/April 2010 Defense Electronics Supplement   [Test & Measurement]
CERDEC, NRL Team On “No-Knob” Radio
Radio spectrum is a vanishing resource and, for that reason, engineers in the United States Army and Navy are joining forces as part of an effort to develop a next-generation cognitive radio that could benefit commercial and military users alike. The Army’s Communications- Electronics Research, Development, and Engineering Center (CERDEC), specifically the organization’s Software Defined Radio (SDR) laboratory, will work with the Naval Research Lab...  — Jack Browne

March 2010   [Components]
Digital Attenuators Master Amplitude In MW Systems
Attenuators are part of any design’s amplitude control. Digital attenuators help to simplify that control in microwave and RF systems. In a variety of markets—including commercial communications, military, and test areas—amplitude is used for modulation, detection, linearity improvement, and a number of other functions in a system. Suppliers of digital step attenuators (DSAs) help to provide the means of controlling power levels swiftly and with...  — Nancy Friedrich

March 2010   [Crosstalk]
An Interview With Dr. Lawrence Williams
NF: A lot of microwave engineers still prefer lab-based measurement techniques to simulation tools. What do you have to say to those folks? LW: Lab-based measurements have their place; simulations have their place. It’s not an either/or decision. Engineers will always perform both. Of course, I believe strongly in the value of simulation because of its flexibility and efficiency. Years ago, at...  — Nancy Friedrich

February 2010   [Communications]
Wireless Demands Focus Designers On Integration
Integration has been a key to the advancement of wireless communications, leading to smaller devices with more functionality. Although the mobile handset is at the forefront of these trends, cost savings and time to market are among the drivers pushing for higher integration in cellular infrastructure as well. As wireless integrators strive for more functions in smaller packages, the trend in ICs continues toward higher levels of analog, digital, and...  — Nancy Friedrich

February 2010   [Crosstalk]
An Interview With John Regazzi
NF: How has the test and measurement industry changed over the last 30 years? JR: When Giga-tronics was founded, the microwave test industry was much less mature than it is today. The microwave field was evolving rapidly with product advancements occurring on a regular basis. In 1980, a few milliwatts of power at 20 GHz were difficult to achieve and the best synthesizers could fetch up to $70,000...  — Nancy Friedrich

January 2010   [Test & Measurement]
Nonlinear S-Parameters And SDR Impact Test And Measurement Equipment
Test and measurement is crucial for research and development through production. As a result, test-equipment manufacturers have had to speed the evolution of their instruments to keep up with rapidly changing wireless-communications standards. They also are relying more on software—either through links to electronic-design-automation (EDA) tools or via software-designed-radio (SDR) architectures. At the same time, test equipment is increasingly being ...  — Nancy Friedrich

January 2010   [Test & Measurement]
Spectrum Analyzers Open Windows On An RF World
Spectrum analyzers have changed drastically in recent years, due largely to the use of digital components. Once predominately based on a superheterodyne receiver architecture to downconvert input signals to intermediate-frequency (IF) signals that were then filtered and processed, newer spectrum analyzers are just as likely to be called “signal analyzers” and employ sampling techniques with a high-speed analog-to-digital converter (ADC). As...  — Jack Browne

January 2010   [Computer-Aided Engineering]
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





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