Patent ID: 6469674
Filing Date: 2002-10-22
Classification: H01Q

Abstract:
An antenna element, comprising two pairs of conducting loops that are disposed approximately in a plane and that have perimeters of approximately one wavelength to two wavelengths of operation, such that:(a) each of said pairs of conducting loops has a point of reference; (b) in each of said pairs of conducting loops, the distance from said point of reference to any point x on each of said conducting loops is approximately equal to the expression r=h|cos(m&thgr;)|p wherein r is said distance from said point of reference to said point x on each of said conducting loops, h is the maximum value of r, m is a positive number greater than one, p is a non-negative number, &thgr; is the angle in said plane between an imaginary straight line from said point of reference to said point x on each of said conducting loops and an imaginary straight line that passes through said points of reference of said two pairs of conducting loops, for a first one of said conducting loops, &thgr; has values that start at approximately âˆ’&pgr;/2m radians and end at approximately &pgr;/2m radians, and for the remaining second one of said conducting loops, &thgr; has values that start at approximately (&pgr;âˆ’&pgr;/2m) radians and end at approximately (&pgr;+&pgr;/2m) radians; (c) in each of said pairs of conducting loops, a first conductor end of said first one of said conducting loops is connected to a first conductor end of said second one of said conducting loops, and the remaining second conductor ends are connected to each other, but there is no direct connection between these two pairs of conductor ends; (d) for the two inner conducting loops, h is the distance that is approximately one-half of the distance between said two points of reference, thereby connecting said two pairs of conducting loops at the proximal point of said antenna element; and (e) there is a means for connecting the associated electronic equipment effectively in series with said two inner conducting loops, approximately at said proximal point of said antenna element.