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Antennas installed at 18 U.S. high schools detected bursts of radio activity that can precede solar disturbances capable of ...
Mechanical antennas represent a disruptive approach to low-frequency communication by exploiting the mechanical oscillation of electric charges or magnetic dipoles to generate electromagnetic ...
The array will include thousands of dishes and up to 1 million low-frequency antennas in an effort to build the world's largest radio telescope.
A frequency-tunable tri-band metamaterial-inspired antenna is proposed. The antenna consists of patches, interdigital capacitors, and meander lines inductors, and loaded with a split ring resonator.
In conventional multiband base station antennas, the beam direction is the same for all shared frequency bands; however the electrical length of the antenna becomes shorter and the beam width becomes ...