IDEA #4RHHEE 20A0040 COMPACT BRILLOUIN ANTENNA FOR DETECTING METAL IN FREE SPACE AREA. 20A0040.

COMPACT BRILLOUIN ANTENNA FOR DETECTING METAL IN FREE SPACE AREA [Key Words: Brilouin antenna, detection, metal, space] Free space electromagnetic (EM) wave communications are limited by absorption and scattering, causing a loss of signal strength. This loss of signal strength is a function of distance and wavelength, and typically drops off exponentially, following Beer’s law. It is well understood that antennas are critical enablers of wireless communications—common examples including radios and TV transmitters. The transmission of energy from a local oscillator through the antenna for free space transmission is determined by the length of the antenna. The ideal physical length of a dipole antenna is half the wavelength (λ) of the output EM wave (λ/2), which necessarily imposes longer-length antennas for longer EM wavelengths. This condition may also be fulfilled if a random walk is taken along ferrite particles within the antenna’s core.