Carbon foam liberates lead-acid batteries for emerging military missions
Jun 1, 2007
By Dan Jurchenko and Kurt Kelley The limitations of conventional lead-acid batteries lie in the electrodes, and a fundamental breakthrough replacing lead with carbon-graphite foam allows the true potential of this mature battery chemistry to be more fully harnessed while maintaining conventional form factors for military equipment....
Microwave/Millimeter-Wave Components
Jun 1, 2007
Micro-miniature connectors A micro-miniature connector family from Hypertronics, the HyperGrid series, targets high-reliability connections in high-density...
Location-detection chip targets ZigBee networking
Jun 1, 2007
Targeting low-power ZigBee/IEEE 802.15.4 wireless sensor networking applications, Texas Instruments has unwrapped a system-on-a-chip (SoC) solution with...
Reformed methanol fuel cell system certified for military field use
Jun 1, 2007
The U.S. Army Communications-Electronics Research, Development and Engineering Center's Army Power Division, has approved a limited safety assessment report for UltraCell's XX25 reformed methanol fuel cell system....
Hynix joins IMEC's CMOS research platform
Jun 1, 2007
Hynix Semiconductor, a memory semiconductor supplier offering dynamic random access memory chips (DRAMs) and flash memory chips, has entered into a strategic...
Military-equipment enhancements require backward compatibility
Jun 1, 2007
Mark Valentine, Technical Editor Many times when a branch of the armed forces considers a new weapons system, one of the key aspects to be evaluated is how effectively the potential addition will integrate with existing arsenal....
Implantable ultralow-power radio chip facilitates in-body communications
Jun 1, 2007
By Peter D. Bradley Targeting implantable applications like pacemakers, nerve stimulators, drug
pumps, and other such medical devices, an ultralow-power RF transceiver
chip has been developed that delivers high data rates, low power consumption
and unique wake-up circuitry. This article discusses the design of an in-body
communication system....
RF PIN diodes come in high-performance SMT packages
Jun 1, 2007
Targeting WiMAX and WLAN applications, Microsemi Corp. has announced a line of RF pin diodes in surface-mount packages with superior electrical and thermal...
Products
Jun 1, 2007
Consumer Electronics Hands-free communications system Zarlink Semiconductor's range of tools that simplify the design of hands-free communication systems...
General Dynamics selects computer for training demos
Jun 1, 2007
General Dynamics Land Systems-Amphibious Systems has selected the Quantum-3D Thermite tactical visual computer version 2.0 to support embedded training testing and demonstrations in the U.S. Marine Corps' expeditionary fighting vehicle....
MIMO WLAN test methodologies for manufacturing
Jun 1, 2007
By Dick Walvis and Sireesha Mallipeddi Four different methodologies are used for testing MIMO WLAN chipsets and products. Each methodology has its advantages and disadvantages, which are discussed in this article....
New technologies drive synthetic instrumentation
Jun 1, 2007
By Eric Starkloff and Kevin Bisking Advances in technology have enabled configurable synthetic instruments that rival dedicated test equipment in performance, while providing a greater range of capabilities for challenging test requirements, such as those for software-defined radios....
Components supplier achieves AS9100 certification
Jun 1, 2007
Gowanda Electronics, a manufacturer of high-performance electronic inductor components for RF and power applications, is registered as conforming to AS9100...
Highly efficient amplifier shows the promise of Doherty architecture
Jun 1, 2007
By Christopher Burns The Doherty amplifier architecture has come a long way in the 70 years since it was conceived and has the potential to deliver the efficiency demanded by today's base station transmitters as well as those serving future generations of wireless networks. The Doherty amplifier described in this article is one of many designed at Freescale, which has been refining the basic Doherty concept....
Jazz, Fujitsu collaborate on RFCMOS SoC solutions
Jun 1, 2007
Fujitsu Ltd., Fujitsu Microelectronics of America, and Jazz Semiconductor, a wholly-owned subsidiary of Jazz Technologies, have announced that the two...
Considerations for selecting hybrid or COTS modules for MIL-SPEC dc-dc conversion
Jun 1, 2007
By Martin Brabham Facing the pressure to reduce costs and use commercial off-the-shelf components, designers are curious to understand the pros and cons of whether a hybrid or a non-hybrid power converter is best for their application....
Communications satellites launched
Jun 1, 2007
Four satellites built for Globalstar by Space Systems/Loral were launched May 29 on a Soyuz launch vehicle from the Baikonur Cosmodrome in Kazakhstan....
Biometrics center supports defense applications
Jun 1, 2007
Lockheed Martin has opened its Biometric Experimentation and Advanced Concepts (BEACON) center in White Hall, W.V. The 6000-square-foot facility will...
Medical ICT, the next frontier for advanced wireless communications
Jun 1, 2007
Ashok Bindra, Editorial Director In Honolulu, Hawaii at the 2007 IEEE MTT-S International Microwave Symposium, the keynote talk by Professor Ryuji Kohno of Yokohama National University signaled a new direction for advanced wireless communications....
Floating display technology increases visibility, reduces side glow
Jun 1, 2007
SCHOTT's floating display technology is intended for display applications to the North American defense industry. The technology uses glass fibers to make the images on LCD and OLED displays appear as if they are on top of the faceplate covering them, making them easier to read for soldiers in the field....
Characterizing phase-locked loops with waveform scans
Jun 1, 2007
By Mike Hertz Identifying frequency stability problems within a phase-locked loop design can be greatly simplified when using an automated method. When an oscilloscope detects the period of a waveform cycle, this value can be directly inverted to compute the instantaneous frequency of the specific waveform cycle. ...
Products
Jun 1, 2007
New products from the June 2007 issue of Defense Electronics....
RF LDMOS power transistor raises efficiency bar
Jun 1, 2007
Designed to set new standards for RF performance in ISM markets, Freescale Semiconductor's RF division has further pushed the power limits of LDMOS RF...
