Automatically tuning ultra-wideband antenna
AssigneeSkywave Antennas, Inc.
InventorRoger Owens
Life of this patent
Estimating the term…
Abstract
A method for propagating signals with an automatically-tuning antenna uses an ultra-wideband antenna formed from a coaxial cable passed through the center of a conductive tube. The center conductor of the coaxial cable is connected to an end of the conductive tube, and the shield of the coaxial cable is not electrically connected to any conductor. Two ferrite beads are disposed serially on the cable beneath the tube, spaced apart from the tube and spaced apart from one another. A centering spacer maintains the coaxial cable within the center of the tube. An electrical signal is applied to a proximal end of the coaxial tube. The antenna is automatically tuned as the frequency of the electrical signal changes, without a need to reconfigure the physical components of the antenna.
Claims19
A method for propagating signals with an automatically-tuning antenna, the method comprising:
- providing a coaxial cable extending through the center of a conductive tube, a distal end of a center conductor of the coaxial cable electrically connected to a distal end of the conductive tube, a distal end of a shield of the coaxial cable not electrically connected to any conductor, the shield terminating within the conductive tube below the distal end of the conductive tube, the arrangement of the coaxial cable with the conductive tube creating an antenna;
- arranging a first and a second ferrite bead on the coaxial cable outwardly from a proximal end of the conductive tube, outside of the conductive tube, the first and second ferrite bead disposed serially on the coaxial cable, spaced apart from one another;
- applying an electrical signal to a proximal end of the coaxial cable;
- automatically tuning the antenna as a frequency of the electrical signal changes.
A method for propagating signals with an automatically tuning ultra-wideband antenna, the method comprising:
- providing a conductive tube comprising a distal end and a proximal end;
- arranging a coaxial cable through the center of the conductive tube, the coaxial cable comprising a center conductor and a shield, a distal end of the center conductor electrically connected to the distal end of the conductive tube, a distal end of a shield of the coaxial cable not electrically connected to any conductor, the shield terminating within the conductive tube below the distal end of the conductive tube, the arrangement of the coaxial cable with the conductive tube forming an antenna;
- arranging a first and a second ferrite bead on the coaxial cable outwardly from the proximal end of the conductive tube, outside of the conductive tube, the first and second ferrite bead disposed serially on the coaxial cable, spaced apart from one another;
- applying an electrical signal to a proximal end of the coaxial cable;
- automatically tuning the antenna as a frequency of the electrical signal changes.
Dependencies are inferred from the claim text.