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In this paper, we present a millimeter wave system that combines several innovations to enable practical use of the yet unharnessed capacity of the millimeter spectrum for high speed and secure wireless connectivity. Essential to its realization is a novel ultra-wideband array that incorporates suitable balanced feeds. Also, unique bandwidth reconfiguration technique is presented via simple tuning...
Ultra-wideband (UWB) arrays are desirable for multi-functional apertures utilizing multiple beams, polarizations, and frequency bands to enable diverse communication and remote-sensing capabilities. The desired bandwidth, compactness, and scanning capability are often mutually conflicting. Here we present our current and previous work on developing arrays with 7∶1 (loss less) and 14∶1 (with R card)...
We present a dual polarized Tightly Coupled Dipole Array (TCDA), representing the first practical realization of dual polarizations using a TCDA topology. This is accomplished through a dual-offset, split unit cell with minimized inter-feed coupling. The array achieves a minimum 6.1∶1 bandwidth for VSWR<2.25, 2.5, and 3.9 for 0°, 30°, and 60° scans, respectively. To our knowledge, this implies...
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