Harvesting Energy From Nature's Motions Nov 10, 2009
"Nature doesn't work in a single frequency, so we wanted to come up with a device that would work over a broad range of frequencies," Stanton said. "By using magnets to 'tune' the bandwidth of the experimental device, we were able verify in the lab that this new non-linear approach can outperform conventional linear devices.". (Science Daily)
Digital TV the sooner the better for the country Sep 25, 2009
A multiplexer is a technique that combines all TV signals from different sources or stations and transmits it on a single-frequency channel for reception by TV viewers. In the digital mode, one frequency channel can be squeezed to take on and transmit between six to eight digital stations/programmes whereas in the analogue, one frequency channel is for one TV programme. (The Star Online, Malaysia -- Business)
New Air Force Magnetron May Help Defeat Enemy Electronics Sep 18, 2009
16, 2006) A new design for a microwave oscillator that is smaller, simpler and produces clearer signals at a single frequency than comparable devices has been invented at NIST. Application areas could include. (Feb. (Science Daily)
Active invisibility cloaks could work at many wavelengths Aug 19, 2009
work with free-air resonators that bend incoming waves of a single frequency around the object to be cloaked. Active cloaks, on the other hand, monitor the incoming waveforms composed of multiple frequencies, then produce a canceling signal that prevents the electromagnetic radiation from reaching the cloaked object. (EETimes)
A new cloaking method Aug 17, 2009
"We have shown that it is numerically possible to cloak objects of any shape that lie outside the cloaking devices, not just from single-frequency waves, but from actual pulses generated by a multi-frequency source," says Graeme Milton, senior author of the research and a distinguished professor of mathematics at the University of Utah. "It's a brand new method of cloaking," Milton adds. (EurekAlert!)
MSU included in DHS radio testing project, Gant reports Jul 19, 2009
Gant said that while most radio equipment used now only operates on a single frequency, it is not practical for everyone to have the same radios. The radios that will be tested should be able communicate with any other radio, he said. (Murray Ledger & Times, KY)
Manatees Can Probably Hear Which Directions Boats Approach From Jun 25, 2009
The team also selected two single frequency (tonal) sounds at 4kHz and 16kHz to test how the manatees responded to less complex sounds. Having trained the manatees to swim to the speaker that they thought the sound came from, the team then played the broadband sounds, of 0. (Science Daily)
Tiny Lasers Plug The 'Green Gap' May 4, 2009
We can now supply spectroscopists with diode-based single frequency, fixed frequency and tunable lasers from 375 to 3000 nanometres. Artificial stars. (Science Daily)
Microwaves 'improve fog landings' Mar 26, 2009
MLS, on the other hand, uses a single frequency in a band far removed from that of the ILS system to broadcast the azimuth and elevation (horizontal and vertical angle) data to the aircraft. The National Air Traffic Service (NATS) says that the new MLS system will guide planes down along the same flight path, so as to not interfere with ILS landings. (BBC News -- Technology)
Rundfunk-Anstalt Sdtirol enhances Digital Terrestrial TV network with Net Insight's Nimbra platform Mar 26, 2009
"The Nimbra platform enables us to easily and cost-efficiently transport multiple services in our network at the highest possible quality levels," says Johann Silbernagl at RAS. "With the new Time Transfer feature we can also implement a Single Frequency Network. SFN networks are mandatory after the analog TV switch-off which is scheduled by the Italian Authority within November 2009 for the area Trentino-Sdtirol." The Nimbra 360 was especially designed for digital terrestrial media networks... (Multichannel News)
Photonic IC startup secures $19.5 million Mar 18, 2009
With respect to transmit performance, OneChip s single-frequency DFB lasers will offer a superior performance in terms of reach and bit rate than competing Fabry-Perot (FP) lasers, OneChip said. OneChip's photonic ICs are designed for automated mounting on a silicon optical bench, without requiring active alignment, using industry-standard, automated assembly processes. (EETimes)
Fujitsu Laboratories Develops CMOS Transmitter IC for 40Gbps Optical Transmission Systems Feb 13, 2009
By focusing on the fact that clock signals in the transmitter IC use a single frequency, new high-speed technology was used in which the inductor compensates for the parasitic capacitance only in the frequency band around the signal frequency, thereby enabling low-noise, high-speed transmission of clock signals, with fewer circuit stages. 2. (JCN Network, Japan)
