Incremental Improvements Define The 2012 Mobile World Congress |
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Louis E. Frenzel, Editor in Chief
The usual players all showed up at this year’s Mobile World Congress in Barcelona with lots of improved devices, but no real game-changing breakthroughs... |
Hynix joins IMEC's CMOS research platform
Hynix Semiconductor, a memory semiconductor supplier offering dynamic random access memory chips (DRAMs) and flash memory chips, has entered into a strategic...
Considerations for selecting hybrid or COTS modules for MIL-SPEC dc-dc conversion
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....
RF PIN diodes come in high-performance SMT packages
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
Consumer Electronics Hands-free communications system Zarlink Semiconductor's range of tools that simplify the design of hands-free communication systems...
Highly efficient amplifier shows the promise of Doherty architecture
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....
Digital crystal video receiver eliminates analog log-amps
A team from the Georgia Tech Research Institute (GTRI) led by Mike Willis, principal research engineer, has been awarded U.S. patent 7,113,229 jointly...
RF defense electronics company acquires radar component vendor
Endwave, a provider of high-frequency RF modules for telecommunications networks, defense electronics and homeland security systems, has acquired ALC...
Communications satellites launched
Four satellites built for Globalstar by Space Systems/Loral were launched May 29 on a Soyuz launch vehicle from the Baikonur Cosmodrome in Kazakhstan....
New technologies drive synthetic instrumentation
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....
How to determine an effective damping factor for a third-order PLL
A clever means for calculating without using circuit simulations is presented. The advantage is that a relatively dense plot (55 points) of vs. phase margin can be produced in a matter of seconds....
Carbon foam liberates lead-acid batteries for emerging military missions
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
Micro-miniature connectors A micro-miniature connector family from Hypertronics, the HyperGrid series, targets high-reliability connections in high-density...
Jazz, Fujitsu collaborate on RFCMOS SoC solutions
Fujitsu Ltd., Fujitsu Microelectronics of America, and Jazz Semiconductor, a wholly-owned subsidiary of Jazz Technologies, have announced that the two...
Products
New products from the June 2007 issue of Defense Electronics....
Characterizing phase-locked loops with waveform scans
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. ...
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