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The diffractive beam splitter [1] [2] (also known as multispot beam generator or array beam generator) is a single optical element that divides an input beam into multiple output beams. [3] Each output beam retains the same optical characteristics as the input beam, such as size, polarization and phase .
Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. [1] This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive interference while others experience destructive interference.
Beamforming is spatial signal processing which makes spatial beam focused on the target direction and spatial beam nulled interference signal. Smart Antennas is multiple antenna systems having one of three structures which are single-input and multiple-output (SIMO), multiple-input and single-output (MISO), and multiple-input and multiple ...
The HAARP project directs a 3.6 M W signal, in the 2.8–10 MHz region of the HF band, into the ionosphere. The signal may be pulsed or continuous. Effects of the transmission and any recovery period can be examined using associated instrumentation, including VHF and UHF radars, HF receivers, and optical cameras. According to the HAARP team ...
"This generator delivers plenty of power to run essential appliances, including the refrigerator, lights and even HVAC if necessary," one buyer wrote. "The build quality is solid, and the ...
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With Raytheon the U.S. Air Force has developed a nonlethal antipersonnel weapon system called Active Denial System (ADS) which emits a beam of millimeter radio waves with a wavelength of 3 mm (frequency of 95 GHz). [17] The weapon causes a person in the beam to feel an intense burning pain, as if their skin is going to catch fire.
The Varians went on to found Varian Associates to commercialize the technology (for example, to make small linear accelerators to generate photons for external beam radiation therapy). Their work was preceded by the description of velocity modulation by A. Arsenjewa-Heil and Oskar Heil (wife and husband) in 1935, though the Varians were ...
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