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ISSUE DATE: FEBRUARY 2012 | |
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February 2012 - In This Issue [Cover Story] VME Synthesizer Spans 1 To 20 GHz Squeezing a 2U rack mount microwave frequency synthesizer into a two-slot VME card takes design innovation and experience. — Jack Browne [News] Teledyne Consolidates Microwave Businesses In these still-uncertain economic times, it has become increasingly sensible for companies to diversify their product offerings. — [News] Kudos TRM Microwave—Has been recognized by BAE Systems’ Joint Strike Fighter team for sustained excellence in product performance and delivery. — [News] Research Vehicle Flaunts 4G Capabilities Beyond sensors used for various monitoring tasks and the microelectromechanical systems (MEMS) found in airbags, telematics applications like infotainment have been among the fastest growing in automotive markets. — [News] Bilayer Graphene Functions As Insulator Many researchers are eying graphene for its potential use in electronics applications. — [News] Market Quote 231,000 additional jobs could be created within a year, thanks to the rapid transition from 3G to 4G mobile-broadband networks. — [News] Testing Agreement Will Hasten 4G Adoption With a universal TD-LTE testing platform, the wireless industry stands poised to accelerate the development of a global fourth-generation (4G) standard. Accordingly, China Mobile and Clearwire Corp. have agreed on common test specifications and joint interoperability testing (IOT) for global-band TD-LTE devices. In doing so, they will accelerate the development of the TD-LTE device... — [News] Submit Your Nomination For The Wireless Hall Of Fame With its “Wireless Hall of Fame,” the Wireless History Foundation has recognized the groundbreaking achievements of 32 individuals since its inception in 2000. — [News] Standards Watch The “Internet of Things” promises to enable greater connectivity for use by utilities, healthcare services, intelligent transportation, and more. — [News] Get The Lowdown On 3D ICs Excitement has been building about the potential benefits of three-dimensional (3D) semiconductor technology. — [Design Features] Current Reuse Enhances UWB LNA Ultrawideband (UWB) communications offers the potential of high-speed data transfers across short distances at low power levels. — [Design Features] CMOS Yields UHF RFID Transmitter Radio-frequency identification (RFID) is a versatile wireless technology for tracking and identifying items over short distances. — [Design Features] Assemble A Compact UWB Printed Monopole Ultrawideband (UWB) communications technology offers great promise for handling impressive data rates at low transmit power levels. — [Design Features] Compensating For DGS Filter Loss Novel circuit design elements such as defected-ground-structure (DGS) resonators and electromagnetic-band-gap (EBG) structures have helped shrink the size of microstrip circuits, including filters and antennas. — [Design Features] Tiny UWB Antenna Notches Two Bands Ultrawideband (UWB) technology shows great promise for high-data-rate, short-distance communications applications. — [Design Features] Filter’s Multiple TZs Afford Flexible Tuning High filter selectivity is desirable for rejecting unwanted spurious signals and for separating multiple channels in communications systems. — [Design Features] C-Shaped Slot Serves UWB Antenna For ultrawideband (UWB) communications technologies to gain momentum worldwide, compact, high-performance antennas will be needed. — [Special Report] Comparing Microwave Semiconductor Processes Choosing a transistor for an active-circuit design, such as a low-noise or power amplifier, was once as simple as picking a proven silicon bipolar transistor. — Jack Browne [Special Report] Inside Track NF: In the ideal vision of wireless devices, products like cell phones would not even need a cord to charge their batteries. — Nancy Friedrich [Special Report] Process Technologies Secure Key Applications Microwave and RF device designers working on commercial and defense designs rely on different semiconductor processes that are based on a range of materials, including silicon carbide (SiC), gallium nitride (GaN), silicon (Si), silicon on insulator (SOI), silicon germanium (SiGe), and gallium arsenide (GaAs). — Janine Sullivan [Editorial] Is GaN Really The Future? During a lifetime in the RF/microwave industry, one gets to see a great deal of change. — Jack Browne [Feedback] Clarifying LXI Having just read the article “Test Modules Offer Measurement Versatility” (January 2012), you describe LXI as being a modular instrument standard. — [Feedback] Editor's Note Thank you for clarifying this. — [Feedback] Top Product Revisited I just wanted to send you a quick note about your article, “Top Products of 2011” (December 2011). — [Feedback] Editor's Note You are correct—the frequency range we mentioned was based on the story from May (“PXI-Based VSA Scrutinizes 3.6 GHz”). — [Company News] Contracts Anritsu—The company’s ME7873L RF Conformance Test System has been selected by PCTEST Engineering Laboratory (PCTEST Lab). — [Company News] Fresh Starts Plessey Semiconductors—Has named Saelig Co. as the North American distributor for its portfolio of semiconductor products. — [People] People AR—Mike Alferman has been appointed Regional Sales Manager for the Pacific Rim. — [R&D Roundup] RFID System Does Away With Chips Radio-frequency-identification (RFID) systems have long proven their worth in business and manufacturing for tracking and managing inventory. — [R&D Roundup] Deciding Between Dielectric or Magnetic Material Antenna designers have long been faced with the challenge of miniaturizing their components. — [R&D Roundup] Low-Noise Synthesizer Generates 60 GHz High-data-rate communications at millimeter-wave frequencies, per IEEE 802.15.3c requirements, will require extremely stable, low-noise signals. — [Application Notes] Magnetic Absorbers Serve Collision-Avoidance Systems Because collision-avoidance systems (CASs) must obviously be fail-safe, they rely on microwave absorbers or “noise-suppression sheets” (NSSs) to reduce electromagnetic interference (EMI). — [Application Notes] Get Up To Speed On Dielectrics All materials on Earth can be considered dielectric materials. — [RF Primer] Probes and Fixtures Ease Microwave Testing Characterizing microwave semiconductor performance is reliant upon high-performance signal sources and analyzers, but many of those measurements would not be possible without microwave probes and test fixtures. — Jack Browne [Microwaves in Europe] Graphene May Hold The Key To Future THz Applications Researchers at the Chalmers University of Technology in Sweden (www.chalmers.se/en/) have successfully demonstrated a subharmonic field-effect-transistor (FET) mixer at microwave frequencies based on graphene substrate material. — Paul Whytock [Product Feature] Check Semiconductor Device Characteristics To characterize semiconductors requires a special class of test instruments capable of evaluating voltages and current levels under different conditions. — Jack Browne [Product Feature] Scopes Capture Signals To 60 GHz Digital sampling oscilloscopes (DSOs) are among the most invaluable test instruments in any RF/microwave design laboratory. — Jack Browne [Product Feature] Firm Offers Design And Management Aid Engineering talent must be properly managed to achieve positive results. — Jack Browne [Product Feature] Module Turns Scope Into Waveform Analyzer Low jitter is critical when making evaluations on waveforms in new communications systems. — Jack Browne [Product Feature] Materials Aid EMI Suppression Microwave absorber materials can be “design savers” when electromagnetic interference (EMI) threatens to disrupt the proper operation of an RF/microwave circuit or system. — Jack Browne [Product Feature] Dual-Band Amplifier Powers 300 To 3800 MHz Testing RF/microwave circuits and devices often requires some kind of a boost, in terms of increasing the power level of a test signal before it is detected by an analyzer. — Jack Browne [Products] Dual-Band TWTA Powers 2 To 18 GHz Model dB-4409 is a pod-mounted, dual-band traveling-wave-tube amplifier (TWTA) with 300 W CW output power. — [Products] GaAs Amp Boosts 10.0 To 13.3 GHz Model MAAP-008924 is a three-stage GaAs power amplifier (PA) with generous output power. — [Products] Highpass Filter Cleans 26.5 To 40.0 GHz Model HP-26D5G-40G-CD-292FF is a highpass filter from Planar Monolithics Industries with a passband of 26.5 to 40.0 GHz and 1-dB cutoff frequency of 26.5 GHz. — [Products] Power Divider Has 16 Outputs Mode DL 162030 is a broadband, 16-way power divider suitable for radar and satellite-communications (satcom) applications from 20 to 3000 MHz. — [Products] RF Resistor Tackles 400 W The model G400B50W5 high-reliability flanged RF resistor from Anaren is now available from Richardson RFPD. — [Products] PLL Synthesizers Extend To 6 GHz Models ADF4151 and ADF4196 are phase-lock-loop (PLL) frequency synthesizer integrated circuits (ICs) that support low-noise signal-generation applications through 6 GHz. — |
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