Patent ID: 9608326
Date: 2017-03-28
CPC Classifications: H01Q

Claim:
1. A structure of a circularly polarized isolated magnetic dipole antenna, comprising: a square column substrate extending along a length and having four sides thereof including a first side, a second side adjacent to the first side, a third side adjacent to the second side, and a fourth side adjacent to each of the third side and the first side; a first antenna plate having a first isolated magnetic dipole (IMD) element disposed on at least one surface thereof, the first antenna plate being attached to the square column at the first side; a second antenna plate having a second IMD element disposed on at least one surface thereof, the second antenna plate being attached to the square column at the second side; a third antenna plate having a third IMD element disposed on at least one surface thereof, the third antenna plate being attached to the square column at the third side; a fourth antenna plate having a fourth IMD element disposed on at least one surface thereof, the fourth antenna plate being attached to the square column at the fourth side; a first cover comprising a substantially planar volume configured to cover the first IMD element; a second cover comprising a substantially planar volume configured to cover the second IMD element; a third cover comprising a substantially planar volume configured to cover the third IMD element; a fourth cover comprising a substantially planar volume configured to cover the fourth IMD element; a feed network configured to supply signals to the first thru fourth IMD elements at a phase difference of ninety degrees in a clockwise or counterclockwise direction; and a cylindrical cover adapted to nest over the antenna plates attached to the substrate; wherein each of said first thru fourth IMD elements is individually tuned to one of four distinct frequencies; and wherein said first IMD element is tuned to a first frequency, and each of said second thru fourth IMD elements is tuned to a progressively increased frequency with respect to the first frequency such that frequency increases incrementally from the first IMD element to the fourth IMD element about the antenna.