Patent ID: 9748642
Date: 2017-08-29
CPC Classifications: H01Q

Claim:
1. A loop antenna having a design frequency and a design wavelength of the design frequency, the loop antenna comprising: a planar electrically conductive ground plane; an electrically conductive partitioned loop driven element having two ends defining a feed point therebetween, the driven element having a circumference equal to about a first odd multiple of the design wavelength, disposed on a first plane parallel to, and spaced by at most about 0.01 times the design wavelength from, the ground plane, wherein width of the driven element, as measured in the first plane, varies along the circumference, such that two diametrically opposed low-impedance portions of the driven element are each wider than, and have impedances at the design frequency no greater than about one-quarter impedance of, each of two remaining high-impedance portions of the driven element; and a first dielectric material disposed between the ground plane and the driven element.