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... |
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...
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,...
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...
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...
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...
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...
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...
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...
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....
MaxStream Inc.'s 900 MHz wireless OEM module
MaxStream Inc. announced the release of its 9XCite 900 MHz wireless OEM module. The 9XCite module has a power output of 1 mW and is pin-for-pin and software compatible with MaxStream's 100 mW 9XStream 900 MHz transceiver....
Errata
In the section of the September 2003 issue of RF Design, we ran an incorrect description of Mini-Circuits' new high and low pass filters. The correct...
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...
Products
Amplifiers WCDMA power amplifier Powerwave Technologies Inc. announced that it has begun commercial deliveries of its 1900 MHz WCDMA RF power amplifiers...
Literature
Test and measurement selection guides Agilent Technologies Inc. announced the availability of two new selection guides, the Basic Instruments 2003 Selection...
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...
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