HIGH EFFICIENCY POLARIZED ULF/VLF/RF TRANSCIEVER ANTENNA

摘要

A transmission antenna includes a closed-loop core having at least two electrically-conductive windings arranged on the closed-loop core. The windings are each electrically-actuated to generate a magnetic flux along the closed-loop core in opposing directions. The transmission antenna may generate a polarized magnetic field within a plane of the closed-loop core and provide broadband transmission of a polarized signal having a relatively flat frequency response. The transmission antenna is electrically-small, and the frequency of the polarized signal is nearly independent of the size of the closed-loop core. Multiple polarized signals may be provided, each being independently and continuously controlled through actuation of the windings. The direction of the polarized signal may also be varied. Additional windings for receiving a signal may simultaneously be employed on the closed-loop core. A method for transmitting a polarized signal with the transmission antenna is also provided.

主权项

1. A transmission antenna comprising:
a closed-loop core; a first winding having an electrically-conductive wire transversely wound around a first segment of the closed-loop core, the first winding being configured for generating a magnetic flux in a first direction along the closed-loop core when electrical current passes through the first winding; and a second winding having an electrically-conductive wire transversely wound around a second segment of the closed-loop core, the second winding being configured for generating a magnetic flux in a second direction along the closed loop core when electrical current passes through the second winding; wherein the magnetic flux in the first direction is opposite the magnetic flux in the second direction for generating a polarized magnetic field and transmitting a polarized signal.