The sun unleashed two major solar storms in a single week this month and more are expected to follow. The most recent X-class solar flare erupted toward Earth, sending a wave of charged particles that have amped up northern lights displays and caused a strong radio blackout for some high-frequency communications systems. Effects on communications were felt within minutes of the … [Read more...]
Terahertz Signal on Silicon Chip Could Scan for Cancer
Cornell researchers have developed a new method of generating terahertz signals on an inexpensive silicon chip, offering possible applications in wireless data transfer, medical imaging, and security scanning. Terahertz radiation has the potential to carry more bandwidth and eliminate the damaging effects of X-rays, but the expense has always made it commercially … [Read more...]
US Pushes Forward on Public-safety LTE Network
The Public Safety Communications Research Program is on an accelerated schedule to set down rules for the mobile LTE network serving police, fire departments and other public safety agencies across the U.S. The network has not previously had standards in its 80 years. PSCR's job is to find out what first responders need from the network and translate those requirements into a … [Read more...]
GaN RF Product for Cellular Infrastructure Applications
Freescale Semiconductor revealed its first RF power amplifier product built using gallium nitride technology. The company’s RF power GaN products will initially target the cellular infrastructure market, with potential future applications including avionics, radar, ISM and software-defined radio. The AFG25HW355S device a 350W HiP with smaller product form factors, low parasitic … [Read more...]
Digital Phase Shifter for RF and Microwave Applications
M/A-COM Technology Solutions Inc. is introducing the MAPS-011007 six-bit digital phase shifter for RF and microwave applications such as communications antennas and radar. The MAPS-011007 is a gallium arsenide pseudomorphic high electron mobility transistor, 1.2-to-1.4 GHz digital phase shifter with an integrated complementary metal oxide silicon driver. The device meets the … [Read more...]
New RF Power Transistors for Wireless Base Stations
NXP Semiconductors has announced the expansion of its Gen8 LDMOS RF power transistor portfolio for wireless base stations, featuring linearized efficiency, gain and wideband capability. Covering all main cellular frequency bands between 700 to 2700MHz, the latest version of the LDMOS process increases the efficiency of Doherty amplifiers by as much as three points and improves … [Read more...]
Single-Chip Transceiver Developed for Compact Radar and Telecom Equipment
Fujitsu Laboratories announced that it has successfully developed its first single-chip transceiver. The transceiver uses a GaN-HEMT duplexer with low signal loss and high-output circuit integration design technology to control signal interference between the outgoing and incoming signals. The result is a transceiver chip operating at a frequency of 10 GHz with an output of 6.3 … [Read more...]
World's Most Powerful Nanoscale Microwave Oscillators
A team of University of California, Los Angeles researchers has created the most powerful high-performance nanoscale microwave oscillators in the world, a development that could lead to cheaper, more energy-efficient mobile communication devices that deliver much better signal quality. The structures, called spin-transfer nano-oscillators, or STNOs, are composed of two … [Read more...]
Signal Booster Enhances Data Transfers from Connected Devices
Wilson Electronics has introduced a line of signal boosters engineered specifically for M2M device installations. The dual band High Power Direct Connect signal booster produces more than 4 watts of output power on 800 MHz band, as well as the maximum allowable of 2 watts on the 1900 MHz band. This makes it an ideal complement to cellular modems operating on GSM or similar … [Read more...]
FCC Petitioned to Regulate Cellphone Signal Boosters
A new update to an FCC petition calls for tighter regulations on cellphone signal boosters. Wilson Electronics, T-Mobile, and Verizon Wireless have jointly filed two standards, which propose consumer cellular signal booster protection regulations. The first is a revised version of technical specifications for consumer boosters designed to operate on multiple frequency bands in … [Read more...]
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