4-A Chips Charge Smart-Phone Li-Ion Batteries
MD&D News Staff
Trumpeted as the first monolithic, 4-A Li-ion battery charger ICs, Summit Microelectronics’ configurable SMB349 and SMB359 operate from a 3.6-V to 16-V input range...
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High-power Ka-band TWT amplifier exploits microfabrication techniques
InnoSys Inc., a Salt Lake City, Utah-based manufacturer of RF/microwave and millimeter wave devices for wireless, broadband and communication markets,...
Temperature compensation enhances piezoelectric substrate's performance
Contemporary SAW filter performance is sensitive to temperature fluctuations because the filter is fabricated on a single piezoelectric substrate......
Minimum-length cascades of short transmission lines
Lowpass ladders of series L and shunt C elements have been used throughout the history of radio engineering as filters for limiting noise bandwidth and...
UWB technology for location-aware networking
There are many commercial and military applications that require knowledge of precise location. Applications include finding children, lost pets and luggage,...
Software defined radios present complex design challenges
Around since the late 1980s, software-defined radios (SDRs) are making the transition from advanced military and intelligence applications to satellite...
Experimental results for PCM/FM, SOQPSK, and multi-H CPM with CMA equalization
The objective of this effort is to evaluate the benefit of, namely legacy pulse code modulation/frequency modulation (PCM/FM), shaped offset quadrature...
A low-cost, two-stage, low noise amplifier for 5 GHz to 6 GHz applications using the silicon-germanium BFP640 transistor
Radio link range is a key performance parameter in cost-sensitive WLAN systems targeted for the consumer market. As transmitter output power is limited...
Adaptive transmit diversity in handsets for performance enhancement of CDMA networks
As the demand for wireless services has grown, there has been an increased usage of wireless data services, such as wireless e-mail, Web browsing and...
Why all the buzz about SOI?
The advantages of silicon on insulator (SOI) have been known for quite some time and it has been used in specialized applications for many years. It is, however, only recently that semiconductor manufacturers have realized that SOI offers solutions to many of the problems they face in the race to higher performance and lower power. At the same time, SOI does not require major changes to the well-known and well-mastered complementary metal oxide semiconductor (CMOS) process flow....
Time and Frequency
Power splitter Mini-Circuits introduces the ZX-10 series of power splitters/combiners. The product features low insertion loss of .25 dB typical and excellent...
Literature
Test and measurement selection guides Agilent Technologies Inc. announced the availability of two new selection guides, the Basic Instruments 2003 Selection...
DC to 100 GHz high-speed digital and mixed-signal integrated circuits
Despite the continued and anticipated advance of modern digital communications, instrumentation, electronics warfare, and radar systems that require high-speed...
Temperature stable PIN diode VCA and high range VCA
Numerous articles and application notes have been written on a PI configured positive intrinsic negative (PIN) diode VCA. This type of VCA is used in...
Affordable phase shifters for electronically scanned phased array antennas
Phase shifters are critical elements for electronically scanned phased array antennas, and typically represent a significant amount of the cost of producing...
Products
Amplifiers WCDMA power amplifier Powerwave Technologies Inc. announced that it has begun commercial deliveries of its 1900 MHz WCDMA RF power amplifiers...
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