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A New Class of Improved Bandwidth Planar Ultrawideband Modular Antenna (PUMA) Arrays Scalable to mm-Waves
Antenna arrays mm-wave array Dipole Planar arrays Ultrawideband
2014/12/8
A new class of Planar Ultrawideband Modular Antenna (PUMA) arrays, termed PUMAv3, is introduced to offer improved performance and further meet demand needs for multifunctional systems. PUMAv3 extends ...
Design and Evaluation of an L-Band Current-Mode Class-D Power Amplifier Integrated Circuit
power amplifier mixer integrated circuit model efficiency
2014/12/8
Power amplifiers (PAs) convert energy from DC to high frequencies in all radio and microwave transmitter systems be they wireless base stations, handsets, radars, heaters, and so on. PAs are the domin...
Unusual Electronic State Found in New Class of Unconventional Superconductors（图）
Unusual Electronic State Unconventional Superconductors
2014/12/30
UPTON, NY—A team of scientists from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Columbia Engineering, Columbia Physics and Kyoto University has discovered an unusual form of ...
Building linear parameter varying models using adaptation, for the control of a class of nonlinear systems
Linear parameter varying (LPV) systems nonlinear systems adaptive systems self-scheduling
2010/10/12
In this paper a novel method is proposed for constructing linear parameter varying (LPV) system models through adaptation. For a class of nonlinear systems, an LPV model is built using its linear part...
Development of a Terawatt Class Sub-10 fs Laser System
High-intensity ultrafast lasers Ti:Sapphire lasers Sub-10 fs, Terawatt
2009/6/1
We have developed an amplifier chain of Ti:Sapphire laser with a spectral width of more than 200 nm, which potentially generates a terawatt sub-10 fs pulse. This laser system consists of a Ti:Sapphire...