Document Type and Number:
Japanese Patent JPH0425723
Kind Code:
B2
Abstract:
An antenna is disclosed that is especially useful for radiating and receiving non-sinusoidal electromagnetic waves. The antenna is an efficient and distortion-free radiator of electromagnetic pulses that do not use a sinusoidal carrier. The antenna's size is independent of frequency and the antenna, therefore, can be of small size relative to the wavelength of the radiated electromagnetic waves. When used for reception of electromagnetic wave energy, the antenna performs with low distortion. The basic concept underlying the invention is the modification of the Hertzian electric dipole into an antenna structure that can carry large currents without requiring a large driving voltage. Antennas for the transmission or reception of sinusoidal waves achieve that goal by employing resonant structures. The invention achieves the same result by changing the Hertzian electric dipole into a loop that forms a Hertzian magnetic dipole and preventing the undesirable magnetic dipole radiation by shields of conducting and absorbing materials.
Inventors:
HENINGU EFU HAAMASU
Application Number:
JP1180884A
Publication Date:
May 01, 1992
Filing Date:
January 25, 1984
Export Citation:
Assignee:
JIOFUIJIKARU SAABEI SHISUTEMUSU INC
International Classes:
H01Q7/00; H01Q9/02; H01Q9/26; H01Q9/28; H01Q9/40; H01Q17/00
Next Patent: LASER POWER METER