Patent ID: 9444145
Filing Date: 2016-09-13
CPC Classification: H01Q,Y10T

Claim Text:
1. An antenna, comprising: a radio frequency (RF) signal feeding port located on an axis, and operative for supplying an RF signal in an operating band of frequencies; a primary antenna member operatively connected to the port, and including an electrically conductive, first antenna element extending in a radial direction away from the axis and continuing along at least one turn in a turning direction at least partly about the axis, and an electrically conductive, second antenna element extending in an opposite radial direction away from the axis and continuing along at least one turn in the turning direction at least partly about the axis, the first and second antenna elements being rotationally symmetrically arranged about the axis, and being operative for conducting the RF signal along the primary antenna member, and for transmitting and receiving electromagnetic waves with a primary slant polarization having components in both of two mutually orthogonal planes; and, a secondary antenna member juxtaposed with the primary antenna member, the secondary antenna member including an electrically conductive, third antenna element extending in the radial direction away from the axis and continuing along at least one turn in the turning direction at least partly about the axis, and an electrically conductive, fourth antenna element extending in the opposite radial direction away from the axis and continuing along at least one turn in the turning direction at least partly about the axis, the third and fourth antenna elements being rotationally symmetrically arranged about the axis, and being operative for re-radiating the electromagnetic waves propagated by the primary antenna member with a secondary slant polarization having components in both of the two mutually orthogonal planes, the primary and secondary slant polarizations being congruent, the port including a feed line and a microstrip circuit that is partly juxtaposed with the primary antenna element, the feed line including an electrically insulating component, an electrical conductor extending through the insulating component and electrically connected to one end region of the microstrip circuit, an electrically conductive sheath connected to the primary antenna element, and a shorted connection for shorting an opposite end region of the microstrip circuit to the primary antenna element.